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-rw-r--r--Modules/_hashopenssl.c487
-rw-r--r--Modules/md5module.c64
-rw-r--r--Modules/sha256module.c709
-rw-r--r--Modules/sha512module.c777
-rw-r--r--Modules/shamodule.c80
5 files changed, 2095 insertions, 22 deletions
diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c
new file mode 100644
index 0000000..bfa180c
--- /dev/null
+++ b/Modules/_hashopenssl.c
@@ -0,0 +1,487 @@
+/* Module that wraps all OpenSSL hash algorithms */
+
+/*
+ * Copyright (C) 2005 Gregory P. Smith (greg@electricrain.com)
+ * Licensed to PSF under a Contributor Agreement.
+ *
+ * Derived from a skeleton of shamodule.c containing work performed by:
+ *
+ * Andrew Kuchling (amk@amk.ca)
+ * Greg Stein (gstein@lyra.org)
+ *
+ */
+
+#include "Python.h"
+#include "structmember.h"
+
+/* EVP is the preferred interface to hashing in OpenSSL */
+#include <openssl/evp.h>
+
+
+typedef struct {
+ PyObject_HEAD
+ PyObject *name; /* name of this hash algorithm */
+ EVP_MD_CTX ctx; /* OpenSSL message digest context */
+} EVPobject;
+
+
+static PyTypeObject EVPtype;
+
+
+#define DEFINE_CONSTS_FOR_NEW(Name) \
+ static PyObject *CONST_ ## Name ## _name_obj; \
+ static EVP_MD_CTX CONST_new_ ## Name ## _ctx; \
+ static EVP_MD_CTX *CONST_new_ ## Name ## _ctx_p = NULL;
+
+DEFINE_CONSTS_FOR_NEW(md5);
+DEFINE_CONSTS_FOR_NEW(sha1);
+DEFINE_CONSTS_FOR_NEW(sha224);
+DEFINE_CONSTS_FOR_NEW(sha256);
+DEFINE_CONSTS_FOR_NEW(sha384);
+DEFINE_CONSTS_FOR_NEW(sha512);
+
+
+static EVPobject *
+newEVPobject(PyObject *name)
+{
+ EVPobject *retval = (EVPobject *)PyObject_New(EVPobject, &EVPtype);
+
+ /* save the name for .name to return */
+ if (retval != NULL) {
+ Py_INCREF(name);
+ retval->name = name;
+ }
+
+ return retval;
+}
+
+/* Internal methods for a hash object */
+
+static void
+EVP_dealloc(PyObject *ptr)
+{
+ EVP_MD_CTX_cleanup(&((EVPobject *)ptr)->ctx);
+ Py_XDECREF(((EVPobject *)ptr)->name);
+ PyObject_Del(ptr);
+}
+
+
+/* External methods for a hash object */
+
+PyDoc_STRVAR(EVP_copy__doc__, "Return a copy of the hash object.");
+
+static PyObject *
+EVP_copy(EVPobject *self, PyObject *args)
+{
+ EVPobject *newobj;
+
+ if (!PyArg_ParseTuple(args, ":copy"))
+ return NULL;
+
+ if ( (newobj = newEVPobject(self->name))==NULL)
+ return NULL;
+
+ EVP_MD_CTX_copy(&newobj->ctx, &self->ctx);
+ return (PyObject *)newobj;
+}
+
+PyDoc_STRVAR(EVP_digest__doc__,
+"Return the digest value as a string of binary data.");
+
+static PyObject *
+EVP_digest(EVPobject *self, PyObject *args)
+{
+ unsigned char digest[EVP_MAX_MD_SIZE];
+ EVP_MD_CTX temp_ctx;
+ PyObject *retval;
+ unsigned int digest_size;
+
+ if (!PyArg_ParseTuple(args, ":digest"))
+ return NULL;
+
+ EVP_MD_CTX_copy(&temp_ctx, &self->ctx);
+ digest_size = EVP_MD_CTX_size(&temp_ctx);
+ EVP_DigestFinal(&temp_ctx, (char *)digest, NULL);
+
+ retval = PyString_FromStringAndSize((const char *)digest, digest_size);
+ EVP_MD_CTX_cleanup(&temp_ctx);
+ return retval;
+}
+
+PyDoc_STRVAR(EVP_hexdigest__doc__,
+"Return the digest value as a string of hexadecimal digits.");
+
+static PyObject *
+EVP_hexdigest(EVPobject *self, PyObject *args)
+{
+ unsigned char digest[EVP_MAX_MD_SIZE];
+ EVP_MD_CTX temp_ctx;
+ PyObject *retval;
+ char *hex_digest;
+ unsigned int i, j, digest_size;
+
+ if (!PyArg_ParseTuple(args, ":hexdigest"))
+ return NULL;
+
+ /* Get the raw (binary) digest value */
+ EVP_MD_CTX_copy(&temp_ctx, &self->ctx);
+ digest_size = EVP_MD_CTX_size(&temp_ctx);
+ EVP_DigestFinal(&temp_ctx, digest, NULL);
+
+ EVP_MD_CTX_cleanup(&temp_ctx);
+
+ /* Create a new string */
+ /* NOTE: not thread safe! modifying an already created string object */
+ /* (not a problem because we hold the GIL by default) */
+ retval = PyString_FromStringAndSize(NULL, digest_size * 2);
+ if (!retval)
+ return NULL;
+ hex_digest = PyString_AsString(retval);
+ if (!hex_digest) {
+ Py_DECREF(retval);
+ return NULL;
+ }
+
+ /* Make hex version of the digest */
+ for(i=j=0; i<digest_size; i++) {
+ char c;
+ c = (digest[i] >> 4) & 0xf;
+ c = (c>9) ? c+'a'-10 : c + '0';
+ hex_digest[j++] = c;
+ c = (digest[i] & 0xf);
+ c = (c>9) ? c+'a'-10 : c + '0';
+ hex_digest[j++] = c;
+ }
+ return retval;
+}
+
+PyDoc_STRVAR(EVP_update__doc__,
+"Update this hash object's state with the provided string.");
+
+static PyObject *
+EVP_update(EVPobject *self, PyObject *args)
+{
+ unsigned char *cp;
+ int len;
+
+ if (!PyArg_ParseTuple(args, "s#:update", &cp, &len))
+ return NULL;
+
+ EVP_DigestUpdate(&self->ctx, cp, len);
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyMethodDef EVP_methods[] = {
+ {"update", (PyCFunction)EVP_update, METH_VARARGS, EVP_update__doc__},
+ {"digest", (PyCFunction)EVP_digest, METH_VARARGS, EVP_digest__doc__},
+ {"hexdigest", (PyCFunction)EVP_hexdigest, METH_VARARGS, EVP_hexdigest__doc__},
+ {"copy", (PyCFunction)EVP_copy, METH_VARARGS, EVP_copy__doc__},
+ {NULL, NULL} /* sentinel */
+};
+
+static PyObject *
+EVP_get_block_size(EVPobject *self, void *closure)
+{
+ return PyInt_FromLong(EVP_MD_CTX_block_size(&((EVPobject *)self)->ctx));
+}
+
+static PyObject *
+EVP_get_digest_size(EVPobject *self, void *closure)
+{
+ return PyInt_FromLong(EVP_MD_CTX_size(&((EVPobject *)self)->ctx));
+}
+
+static PyMemberDef EVP_members[] = {
+ {"name", T_OBJECT, offsetof(EVPobject, name), READONLY, PyDoc_STR("algorithm name.")},
+ {NULL} /* Sentinel */
+};
+
+static PyGetSetDef EVP_getseters[] = {
+ {"digest_size",
+ (getter)EVP_get_digest_size, NULL,
+ NULL,
+ NULL},
+ {"block_size",
+ (getter)EVP_get_block_size, NULL,
+ NULL,
+ NULL},
+ /* the old md5 and sha modules support 'digest_size' as in PEP 247.
+ * the old sha module also supported 'digestsize'. ugh. */
+ {"digestsize",
+ (getter)EVP_get_digest_size, NULL,
+ NULL,
+ NULL},
+ {NULL} /* Sentinel */
+};
+
+
+static PyObject *
+EVP_repr(PyObject *self)
+{
+ char buf[100];
+ PyOS_snprintf(buf, sizeof(buf), "<%s HASH object @ %p>",
+ PyString_AsString(((EVPobject *)self)->name), self);
+ return PyString_FromString(buf);
+}
+
+#if HASH_OBJ_CONSTRUCTOR
+static int
+EVP_tp_init(EVPobject *self, PyObject *args, PyObject *kwds)
+{
+ static char *kwlist[] = {"name", "string", NULL};
+ PyObject *name_obj = NULL;
+ char *nameStr;
+ unsigned char *cp = NULL;
+ unsigned int len;
+ const EVP_MD *digest;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|s#:HASH", kwlist,
+ &name_obj, &cp, &len)) {
+ return -1;
+ }
+
+ if (!PyArg_Parse(name_obj, "s", &nameStr)) {
+ PyErr_SetString(PyExc_TypeError, "name must be a string");
+ return -1;
+ }
+
+ digest = EVP_get_digestbyname(nameStr);
+ if (!digest) {
+ PyErr_SetString(PyExc_ValueError, "unknown hash function");
+ return -1;
+ }
+ EVP_DigestInit(&self->ctx, digest);
+
+ self->name = name_obj;
+ Py_INCREF(self->name);
+
+ if (cp && len)
+ EVP_DigestUpdate(&self->ctx, cp, len);
+
+ return 0;
+}
+#endif
+
+
+PyDoc_STRVAR(hashtype_doc,
+"A hash represents the object used to calculate a checksum of a\n\
+string of information.\n\
+\n\
+Methods:\n\
+\n\
+update() -- updates the current digest with an additional string\n\
+digest() -- return the current digest value\n\
+hexdigest() -- return the current digest as a string of hexadecimal digits\n\
+copy() -- return a copy of the current hash object\n\
+\n\
+Attributes:\n\
+\n\
+name -- the hash algorithm being used by this object\n\
+digest_size -- number of bytes in this hashes output\n");
+
+static PyTypeObject EVPtype = {
+ PyObject_HEAD_INIT(NULL)
+ 0, /*ob_size*/
+ "_hashlib.HASH", /*tp_name*/
+ sizeof(EVPobject), /*tp_basicsize*/
+ 0, /*tp_itemsize*/
+ /* methods */
+ EVP_dealloc, /*tp_dealloc*/
+ 0, /*tp_print*/
+ 0, /*tp_getattr*/
+ 0, /*tp_setattr*/
+ 0, /*tp_compare*/
+ EVP_repr, /*tp_repr*/
+ 0, /*tp_as_number*/
+ 0, /*tp_as_sequence*/
+ 0, /*tp_as_mapping*/
+ 0, /*tp_hash*/
+ 0, /*tp_call*/
+ 0, /*tp_str*/
+ 0, /*tp_getattro*/
+ 0, /*tp_setattro*/
+ 0, /*tp_as_buffer*/
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
+ hashtype_doc, /*tp_doc*/
+ 0, /*tp_traverse*/
+ 0, /*tp_clear*/
+ 0, /*tp_richcompare*/
+ 0, /*tp_weaklistoffset*/
+ 0, /*tp_iter*/
+ 0, /*tp_iternext*/
+ EVP_methods, /* tp_methods */
+ EVP_members, /* tp_members */
+ EVP_getseters, /* tp_getset */
+#if 1
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+#endif
+#if HASH_OBJ_CONSTRUCTOR
+ (initproc)EVP_tp_init, /* tp_init */
+#endif
+};
+
+static PyObject *
+EVPnew(PyObject *name_obj,
+ const EVP_MD *digest, const EVP_MD_CTX *initial_ctx,
+ const char *cp, unsigned int len)
+{
+ EVPobject *self;
+
+ if (!digest && !initial_ctx) {
+ PyErr_SetString(PyExc_ValueError, "unsupported hash type");
+ return NULL;
+ }
+
+ if ((self = newEVPobject(name_obj)) == NULL)
+ return NULL;
+
+ if (initial_ctx) {
+ EVP_MD_CTX_copy(&self->ctx, initial_ctx);
+ } else {
+ EVP_DigestInit(&self->ctx, digest);
+ }
+
+ if (cp && len)
+ EVP_DigestUpdate(&self->ctx, cp, len);
+
+ return (PyObject *)self;
+}
+
+
+/* The module-level function: new() */
+
+PyDoc_STRVAR(EVP_new__doc__,
+"Return a new hash object using the named algorithm.\n\
+An optional string argument may be provided and will be\n\
+automatically hashed.\n\
+\n\
+The MD5 and SHA1 algorithms are always supported.\n");
+
+static PyObject *
+EVP_new(PyObject *self, PyObject *args, PyObject *kwdict)
+{
+ static char *kwlist[] = {"name", "string", NULL};
+ PyObject *name_obj = NULL;
+ char *name;
+ const EVP_MD *digest;
+ unsigned char *cp = NULL;
+ unsigned int len;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwdict, "O|s#:new", kwlist,
+ &name_obj, &cp, &len)) {
+ return NULL;
+ }
+
+ if (!PyArg_Parse(name_obj, "s", &name)) {
+ PyErr_SetString(PyExc_TypeError, "name must be a string");
+ return NULL;
+ }
+
+ digest = EVP_get_digestbyname(name);
+
+ return EVPnew(name_obj, digest, NULL, cp, len);
+}
+
+/*
+ * This macro generates constructor function definitions for specific
+ * hash algorithms. These constructors are much faster than calling
+ * the generic one passing it a python string and are noticably
+ * faster than calling a python new() wrapper. Thats important for
+ * code that wants to make hashes of a bunch of small strings.
+ */
+#define GEN_CONSTRUCTOR(NAME) \
+ static PyObject * \
+ EVP_new_ ## NAME (PyObject *self, PyObject *args) \
+ { \
+ unsigned char *cp = NULL; \
+ unsigned int len; \
+ \
+ if (!PyArg_ParseTuple(args, "|s#:" #NAME , &cp, &len)) { \
+ return NULL; \
+ } \
+ \
+ return EVPnew( \
+ CONST_ ## NAME ## _name_obj, \
+ NULL, \
+ CONST_new_ ## NAME ## _ctx_p, \
+ cp, len); \
+ }
+
+/* a PyMethodDef structure for the constructor */
+#define CONSTRUCTOR_METH_DEF(NAME) \
+ {"openssl_" #NAME, (PyCFunction)EVP_new_ ## NAME, METH_VARARGS, \
+ PyDoc_STR("Returns a " #NAME \
+ " hash object; optionally initialized with a string") \
+ }
+
+/* used in the init function to setup a constructor */
+#define INIT_CONSTRUCTOR_CONSTANTS(NAME) do { \
+ CONST_ ## NAME ## _name_obj = PyString_FromString(#NAME); \
+ if (EVP_get_digestbyname(#NAME)) { \
+ CONST_new_ ## NAME ## _ctx_p = &CONST_new_ ## NAME ## _ctx; \
+ EVP_DigestInit(CONST_new_ ## NAME ## _ctx_p, EVP_get_digestbyname(#NAME)); \
+ } \
+} while (0);
+
+GEN_CONSTRUCTOR(md5)
+GEN_CONSTRUCTOR(sha1)
+GEN_CONSTRUCTOR(sha224)
+GEN_CONSTRUCTOR(sha256)
+GEN_CONSTRUCTOR(sha384)
+GEN_CONSTRUCTOR(sha512)
+
+/* List of functions exported by this module */
+
+static struct PyMethodDef EVP_functions[] = {
+ {"new", (PyCFunction)EVP_new, METH_VARARGS|METH_KEYWORDS, EVP_new__doc__},
+ CONSTRUCTOR_METH_DEF(md5),
+ CONSTRUCTOR_METH_DEF(sha1),
+ CONSTRUCTOR_METH_DEF(sha224),
+ CONSTRUCTOR_METH_DEF(sha256),
+ CONSTRUCTOR_METH_DEF(sha384),
+ CONSTRUCTOR_METH_DEF(sha512),
+ {NULL, NULL} /* Sentinel */
+};
+
+
+/* Initialize this module. */
+
+PyMODINIT_FUNC
+init_hashlib(void)
+{
+ PyObject *m;
+
+ OpenSSL_add_all_digests();
+
+ /* TODO build EVP_functions openssl_* entries dynamically based
+ * on what hashes are supported rather than listing many
+ * but having some be unsupported. Only init appropriate
+ * constants. */
+
+ EVPtype.ob_type = &PyType_Type;
+ if (PyType_Ready(&EVPtype) < 0)
+ return;
+
+ m = Py_InitModule("_hashlib", EVP_functions);
+ if (m == NULL)
+ return;
+
+#if HASH_OBJ_CONSTRUCTOR
+ Py_INCREF(&EVPtype);
+ PyModule_AddObject(m, "HASH", (PyObject *)&EVPtype);
+#endif
+
+ /* these constants are used by the convenience constructors */
+ INIT_CONSTRUCTOR_CONSTANTS(md5);
+ INIT_CONSTRUCTOR_CONSTANTS(sha1);
+ INIT_CONSTRUCTOR_CONSTANTS(sha224);
+ INIT_CONSTRUCTOR_CONSTANTS(sha256);
+ INIT_CONSTRUCTOR_CONSTANTS(sha384);
+ INIT_CONSTRUCTOR_CONSTANTS(sha512);
+}
diff --git a/Modules/md5module.c b/Modules/md5module.c
index 65b83a7..9c647c5 100644
--- a/Modules/md5module.c
+++ b/Modules/md5module.c
@@ -10,6 +10,7 @@
/* MD5 objects */
#include "Python.h"
+#include "structmember.h"
#include "md5.h"
typedef struct {
@@ -150,15 +151,46 @@ static PyMethodDef md5_methods[] = {
};
static PyObject *
-md5_getattr(md5object *self, char *name)
+md5_get_block_size(PyObject *self, void *closure)
{
- if (strcmp(name, "digest_size") == 0) {
- return PyInt_FromLong(16);
- }
+ return PyInt_FromLong(64);
+}
+
+static PyObject *
+md5_get_digest_size(PyObject *self, void *closure)
+{
+ return PyInt_FromLong(16);
+}
- return Py_FindMethod(md5_methods, (PyObject *)self, name);
+static PyObject *
+md5_get_name(PyObject *self, void *closure)
+{
+ return PyString_FromStringAndSize("MD5", 3);
}
+static PyGetSetDef md5_getseters[] = {
+ {"digest_size",
+ (getter)md5_get_digest_size, NULL,
+ NULL,
+ NULL},
+ {"block_size",
+ (getter)md5_get_block_size, NULL,
+ NULL,
+ NULL},
+ {"name",
+ (getter)md5_get_name, NULL,
+ NULL,
+ NULL},
+ /* the old md5 and sha modules support 'digest_size' as in PEP 247.
+ * the old sha module also supported 'digestsize'. ugh. */
+ {"digestsize",
+ (getter)md5_get_digest_size, NULL,
+ NULL,
+ NULL},
+ {NULL} /* Sentinel */
+};
+
+
PyDoc_STRVAR(module_doc,
"This module implements the interface to RSA's MD5 message digest\n\
algorithm (see also Internet RFC 1321). Its use is quite\n\
@@ -191,13 +223,13 @@ copy() -- return a copy of the current md5 object");
static PyTypeObject MD5type = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
- "md5.md5", /*tp_name*/
+ "_md5.md5", /*tp_name*/
sizeof(md5object), /*tp_size*/
0, /*tp_itemsize*/
/* methods */
(destructor)md5_dealloc, /*tp_dealloc*/
0, /*tp_print*/
- (getattrfunc)md5_getattr, /*tp_getattr*/
+ 0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
@@ -210,8 +242,17 @@ static PyTypeObject MD5type = {
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
- 0, /*tp_xxx4*/
+ Py_TPFLAGS_DEFAULT, /*tp_flags*/
md5type_doc, /*tp_doc*/
+ 0, /*tp_traverse*/
+ 0, /*tp_clear*/
+ 0, /*tp_richcompare*/
+ 0, /*tp_weaklistoffset*/
+ 0, /*tp_iter*/
+ 0, /*tp_iternext*/
+ md5_methods, /*tp_methods*/
+ 0, /*tp_members*/
+ md5_getseters, /*tp_getset*/
};
@@ -247,7 +288,6 @@ is made.");
static PyMethodDef md5_functions[] = {
{"new", (PyCFunction)MD5_new, METH_VARARGS, new_doc},
- {"md5", (PyCFunction)MD5_new, METH_VARARGS, new_doc}, /* Backward compatibility */
{NULL, NULL} /* Sentinel */
};
@@ -255,12 +295,14 @@ static PyMethodDef md5_functions[] = {
/* Initialize this module. */
PyMODINIT_FUNC
-initmd5(void)
+init_md5(void)
{
PyObject *m, *d;
MD5type.ob_type = &PyType_Type;
- m = Py_InitModule3("md5", md5_functions, module_doc);
+ if (PyType_Ready(&MD5type) < 0)
+ return;
+ m = Py_InitModule3("_md5", md5_functions, module_doc);
d = PyModule_GetDict(m);
PyDict_SetItemString(d, "MD5Type", (PyObject *)&MD5type);
PyModule_AddIntConstant(m, "digest_size", 16);
diff --git a/Modules/sha256module.c b/Modules/sha256module.c
new file mode 100644
index 0000000..8da36b7
--- /dev/null
+++ b/Modules/sha256module.c
@@ -0,0 +1,709 @@
+/* SHA256 module */
+
+/* This module provides an interface to NIST's SHA-256 and SHA-224 Algorithms */
+
+/* See below for information about the original code this module was
+ based upon. Additional work performed by:
+
+ Andrew Kuchling (amk@amk.ca)
+ Greg Stein (gstein@lyra.org)
+ Trevor Perrin (trevp@trevp.net)
+
+ Copyright (C) 2005 Gregory P. Smith (greg@electricrain.com)
+ Licensed to PSF under a Contributor Agreement.
+
+*/
+
+/* SHA objects */
+
+#include "Python.h"
+#include "structmember.h"
+
+
+/* Endianness testing and definitions */
+#define TestEndianness(variable) {int i=1; variable=PCT_BIG_ENDIAN;\
+ if (*((char*)&i)==1) variable=PCT_LITTLE_ENDIAN;}
+
+#define PCT_LITTLE_ENDIAN 1
+#define PCT_BIG_ENDIAN 0
+
+/* Some useful types */
+
+typedef unsigned char SHA_BYTE;
+
+#if SIZEOF_INT == 4
+typedef unsigned int SHA_INT32; /* 32-bit integer */
+#else
+/* not defined. compilation will die. */
+#endif
+
+/* The SHA block size and message digest sizes, in bytes */
+
+#define SHA_BLOCKSIZE 64
+#define SHA_DIGESTSIZE 32
+
+/* The structure for storing SHA info */
+
+typedef struct {
+ PyObject_HEAD
+ SHA_INT32 digest[8]; /* Message digest */
+ SHA_INT32 count_lo, count_hi; /* 64-bit bit count */
+ SHA_BYTE data[SHA_BLOCKSIZE]; /* SHA data buffer */
+ int Endianness;
+ int local; /* unprocessed amount in data */
+ int digestsize;
+} SHAobject;
+
+/* When run on a little-endian CPU we need to perform byte reversal on an
+ array of longwords. */
+
+static void longReverse(SHA_INT32 *buffer, int byteCount, int Endianness)
+{
+ SHA_INT32 value;
+
+ if ( Endianness == PCT_BIG_ENDIAN )
+ return;
+
+ byteCount /= sizeof(*buffer);
+ while (byteCount--) {
+ value = *buffer;
+ value = ( ( value & 0xFF00FF00L ) >> 8 ) | \
+ ( ( value & 0x00FF00FFL ) << 8 );
+ *buffer++ = ( value << 16 ) | ( value >> 16 );
+ }
+}
+
+static void SHAcopy(SHAobject *src, SHAobject *dest)
+{
+ dest->Endianness = src->Endianness;
+ dest->local = src->local;
+ dest->digestsize = src->digestsize;
+ dest->count_lo = src->count_lo;
+ dest->count_hi = src->count_hi;
+ memcpy(dest->digest, src->digest, sizeof(src->digest));
+ memcpy(dest->data, src->data, sizeof(src->data));
+}
+
+
+/* ------------------------------------------------------------------------
+ *
+ * This code for the SHA-256 algorithm was noted as public domain. The
+ * original headers are pasted below.
+ *
+ * Several changes have been made to make it more compatible with the
+ * Python environment and desired interface.
+ *
+ */
+
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * gurantee it works.
+ *
+ * Tom St Denis, tomstdenis@iahu.ca, http://libtomcrypt.org
+ */
+
+
+/* SHA256 by Tom St Denis */
+
+/* Various logical functions */
+#define ROR(x, y)\
+( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | \
+((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
+#define Ch(x,y,z) (z ^ (x & (y ^ z)))
+#define Maj(x,y,z) (((x | y) & z) | (x & y))
+#define S(x, n) ROR((x),(n))
+#define R(x, n) (((x)&0xFFFFFFFFUL)>>(n))
+#define Sigma0(x) (S(x, 2) ^ S(x, 13) ^ S(x, 22))
+#define Sigma1(x) (S(x, 6) ^ S(x, 11) ^ S(x, 25))
+#define Gamma0(x) (S(x, 7) ^ S(x, 18) ^ R(x, 3))
+#define Gamma1(x) (S(x, 17) ^ S(x, 19) ^ R(x, 10))
+
+
+static void
+sha_transform(SHAobject *sha_info)
+{
+ int i;
+ SHA_INT32 S[8], W[64], t0, t1;
+
+ memcpy(W, sha_info->data, sizeof(sha_info->data));
+ longReverse(W, (int)sizeof(sha_info->data), sha_info->Endianness);
+
+ for (i = 16; i < 64; ++i) {
+ W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
+ }
+ for (i = 0; i < 8; ++i) {
+ S[i] = sha_info->digest[i];
+ }
+
+ /* Compress */
+#define RND(a,b,c,d,e,f,g,h,i,ki) \
+ t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \
+ t1 = Sigma0(a) + Maj(a, b, c); \
+ d += t0; \
+ h = t0 + t1;
+
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],0,0x428a2f98);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],1,0x71374491);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],2,0xb5c0fbcf);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],3,0xe9b5dba5);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],4,0x3956c25b);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],5,0x59f111f1);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],6,0x923f82a4);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],7,0xab1c5ed5);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],8,0xd807aa98);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],9,0x12835b01);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],10,0x243185be);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],11,0x550c7dc3);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],12,0x72be5d74);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],13,0x80deb1fe);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],14,0x9bdc06a7);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],15,0xc19bf174);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],16,0xe49b69c1);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],17,0xefbe4786);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],18,0x0fc19dc6);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],19,0x240ca1cc);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],20,0x2de92c6f);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],21,0x4a7484aa);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],22,0x5cb0a9dc);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],23,0x76f988da);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],24,0x983e5152);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],25,0xa831c66d);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],26,0xb00327c8);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],27,0xbf597fc7);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],28,0xc6e00bf3);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],29,0xd5a79147);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],30,0x06ca6351);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],31,0x14292967);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],32,0x27b70a85);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],33,0x2e1b2138);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],34,0x4d2c6dfc);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],35,0x53380d13);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],36,0x650a7354);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],37,0x766a0abb);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],38,0x81c2c92e);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],39,0x92722c85);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],40,0xa2bfe8a1);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],41,0xa81a664b);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],42,0xc24b8b70);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],43,0xc76c51a3);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],44,0xd192e819);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],45,0xd6990624);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],46,0xf40e3585);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],47,0x106aa070);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],48,0x19a4c116);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],49,0x1e376c08);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],50,0x2748774c);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],51,0x34b0bcb5);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],52,0x391c0cb3);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],53,0x4ed8aa4a);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],54,0x5b9cca4f);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],55,0x682e6ff3);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],56,0x748f82ee);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],57,0x78a5636f);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],58,0x84c87814);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],59,0x8cc70208);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],60,0x90befffa);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],61,0xa4506ceb);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],62,0xbef9a3f7);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],63,0xc67178f2);
+
+#undef RND
+
+ /* feedback */
+ for (i = 0; i < 8; i++) {
+ sha_info->digest[i] = sha_info->digest[i] + S[i];
+ }
+
+}
+
+
+
+/* initialize the SHA digest */
+
+static void
+sha_init(SHAobject *sha_info)
+{
+ TestEndianness(sha_info->Endianness)
+ sha_info->digest[0] = 0x6A09E667L;
+ sha_info->digest[1] = 0xBB67AE85L;
+ sha_info->digest[2] = 0x3C6EF372L;
+ sha_info->digest[3] = 0xA54FF53AL;
+ sha_info->digest[4] = 0x510E527FL;
+ sha_info->digest[5] = 0x9B05688CL;
+ sha_info->digest[6] = 0x1F83D9ABL;
+ sha_info->digest[7] = 0x5BE0CD19L;
+ sha_info->count_lo = 0L;
+ sha_info->count_hi = 0L;
+ sha_info->local = 0;
+ sha_info->digestsize = 32;
+}
+
+static void
+sha224_init(SHAobject *sha_info)
+{
+ TestEndianness(sha_info->Endianness)
+ sha_info->digest[0] = 0xc1059ed8L;
+ sha_info->digest[1] = 0x367cd507L;
+ sha_info->digest[2] = 0x3070dd17L;
+ sha_info->digest[3] = 0xf70e5939L;
+ sha_info->digest[4] = 0xffc00b31L;
+ sha_info->digest[5] = 0x68581511L;
+ sha_info->digest[6] = 0x64f98fa7L;
+ sha_info->digest[7] = 0xbefa4fa4L;
+ sha_info->count_lo = 0L;
+ sha_info->count_hi = 0L;
+ sha_info->local = 0;
+ sha_info->digestsize = 28;
+}
+
+
+/* update the SHA digest */
+
+static void
+sha_update(SHAobject *sha_info, SHA_BYTE *buffer, int count)
+{
+ int i;
+ SHA_INT32 clo;
+
+ clo = sha_info->count_lo + ((SHA_INT32) count << 3);
+ if (clo < sha_info->count_lo) {
+ ++sha_info->count_hi;
+ }
+ sha_info->count_lo = clo;
+ sha_info->count_hi += (SHA_INT32) count >> 29;
+ if (sha_info->local) {
+ i = SHA_BLOCKSIZE - sha_info->local;
+ if (i > count) {
+ i = count;
+ }
+ memcpy(((SHA_BYTE *) sha_info->data) + sha_info->local, buffer, i);
+ count -= i;
+ buffer += i;
+ sha_info->local += i;
+ if (sha_info->local == SHA_BLOCKSIZE) {
+ sha_transform(sha_info);
+ }
+ else {
+ return;
+ }
+ }
+ while (count >= SHA_BLOCKSIZE) {
+ memcpy(sha_info->data, buffer, SHA_BLOCKSIZE);
+ buffer += SHA_BLOCKSIZE;
+ count -= SHA_BLOCKSIZE;
+ sha_transform(sha_info);
+ }
+ memcpy(sha_info->data, buffer, count);
+ sha_info->local = count;
+}
+
+/* finish computing the SHA digest */
+
+static void
+sha_final(unsigned char digest[SHA_DIGESTSIZE], SHAobject *sha_info)
+{
+ int count;
+ SHA_INT32 lo_bit_count, hi_bit_count;
+
+ lo_bit_count = sha_info->count_lo;
+ hi_bit_count = sha_info->count_hi;
+ count = (int) ((lo_bit_count >> 3) & 0x3f);
+ ((SHA_BYTE *) sha_info->data)[count++] = 0x80;
+ if (count > SHA_BLOCKSIZE - 8) {
+ memset(((SHA_BYTE *) sha_info->data) + count, 0,
+ SHA_BLOCKSIZE - count);
+ sha_transform(sha_info);
+ memset((SHA_BYTE *) sha_info->data, 0, SHA_BLOCKSIZE - 8);
+ }
+ else {
+ memset(((SHA_BYTE *) sha_info->data) + count, 0,
+ SHA_BLOCKSIZE - 8 - count);
+ }
+
+ /* GJS: note that we add the hi/lo in big-endian. sha_transform will
+ swap these values into host-order. */
+ sha_info->data[56] = (hi_bit_count >> 24) & 0xff;
+ sha_info->data[57] = (hi_bit_count >> 16) & 0xff;
+ sha_info->data[58] = (hi_bit_count >> 8) & 0xff;
+ sha_info->data[59] = (hi_bit_count >> 0) & 0xff;
+ sha_info->data[60] = (lo_bit_count >> 24) & 0xff;
+ sha_info->data[61] = (lo_bit_count >> 16) & 0xff;
+ sha_info->data[62] = (lo_bit_count >> 8) & 0xff;
+ sha_info->data[63] = (lo_bit_count >> 0) & 0xff;
+ sha_transform(sha_info);
+ digest[ 0] = (unsigned char) ((sha_info->digest[0] >> 24) & 0xff);
+ digest[ 1] = (unsigned char) ((sha_info->digest[0] >> 16) & 0xff);
+ digest[ 2] = (unsigned char) ((sha_info->digest[0] >> 8) & 0xff);
+ digest[ 3] = (unsigned char) ((sha_info->digest[0] ) & 0xff);
+ digest[ 4] = (unsigned char) ((sha_info->digest[1] >> 24) & 0xff);
+ digest[ 5] = (unsigned char) ((sha_info->digest[1] >> 16) & 0xff);
+ digest[ 6] = (unsigned char) ((sha_info->digest[1] >> 8) & 0xff);
+ digest[ 7] = (unsigned char) ((sha_info->digest[1] ) & 0xff);
+ digest[ 8] = (unsigned char) ((sha_info->digest[2] >> 24) & 0xff);
+ digest[ 9] = (unsigned char) ((sha_info->digest[2] >> 16) & 0xff);
+ digest[10] = (unsigned char) ((sha_info->digest[2] >> 8) & 0xff);
+ digest[11] = (unsigned char) ((sha_info->digest[2] ) & 0xff);
+ digest[12] = (unsigned char) ((sha_info->digest[3] >> 24) & 0xff);
+ digest[13] = (unsigned char) ((sha_info->digest[3] >> 16) & 0xff);
+ digest[14] = (unsigned char) ((sha_info->digest[3] >> 8) & 0xff);
+ digest[15] = (unsigned char) ((sha_info->digest[3] ) & 0xff);
+ digest[16] = (unsigned char) ((sha_info->digest[4] >> 24) & 0xff);
+ digest[17] = (unsigned char) ((sha_info->digest[4] >> 16) & 0xff);
+ digest[18] = (unsigned char) ((sha_info->digest[4] >> 8) & 0xff);
+ digest[19] = (unsigned char) ((sha_info->digest[4] ) & 0xff);
+ digest[20] = (unsigned char) ((sha_info->digest[5] >> 24) & 0xff);
+ digest[21] = (unsigned char) ((sha_info->digest[5] >> 16) & 0xff);
+ digest[22] = (unsigned char) ((sha_info->digest[5] >> 8) & 0xff);
+ digest[23] = (unsigned char) ((sha_info->digest[5] ) & 0xff);
+ digest[24] = (unsigned char) ((sha_info->digest[6] >> 24) & 0xff);
+ digest[25] = (unsigned char) ((sha_info->digest[6] >> 16) & 0xff);
+ digest[26] = (unsigned char) ((sha_info->digest[6] >> 8) & 0xff);
+ digest[27] = (unsigned char) ((sha_info->digest[6] ) & 0xff);
+ digest[28] = (unsigned char) ((sha_info->digest[7] >> 24) & 0xff);
+ digest[29] = (unsigned char) ((sha_info->digest[7] >> 16) & 0xff);
+ digest[30] = (unsigned char) ((sha_info->digest[7] >> 8) & 0xff);
+ digest[31] = (unsigned char) ((sha_info->digest[7] ) & 0xff);
+}
+
+/*
+ * End of copied SHA code.
+ *
+ * ------------------------------------------------------------------------
+ */
+
+static PyTypeObject SHA224type;
+static PyTypeObject SHA256type;
+
+
+static SHAobject *
+newSHA224object(void)
+{
+ return (SHAobject *)PyObject_New(SHAobject, &SHA224type);
+}
+
+static SHAobject *
+newSHA256object(void)
+{
+ return (SHAobject *)PyObject_New(SHAobject, &SHA256type);
+}
+
+/* Internal methods for a hash object */
+
+static void
+SHA_dealloc(PyObject *ptr)
+{
+ PyObject_Del(ptr);
+}
+
+
+/* External methods for a hash object */
+
+PyDoc_STRVAR(SHA256_copy__doc__, "Return a copy of the hash object.");
+
+static PyObject *
+SHA256_copy(SHAobject *self, PyObject *args)
+{
+ SHAobject *newobj;
+
+ if (!PyArg_ParseTuple(args, ":copy")) {
+ return NULL;
+ }
+
+ if (((PyObject*)self)->ob_type == &SHA256type) {
+ if ( (newobj = newSHA256object())==NULL)
+ return NULL;
+ } else {
+ if ( (newobj = newSHA224object())==NULL)
+ return NULL;
+ }
+
+ SHAcopy(self, newobj);
+ return (PyObject *)newobj;
+}
+
+PyDoc_STRVAR(SHA256_digest__doc__,
+"Return the digest value as a string of binary data.");
+
+static PyObject *
+SHA256_digest(SHAobject *self, PyObject *args)
+{
+ unsigned char digest[SHA_DIGESTSIZE];
+ SHAobject temp;
+
+ if (!PyArg_ParseTuple(args, ":digest"))
+ return NULL;
+
+ SHAcopy(self, &temp);
+ sha_final(digest, &temp);
+ return PyString_FromStringAndSize((const char *)digest, self->digestsize);
+}
+
+PyDoc_STRVAR(SHA256_hexdigest__doc__,
+"Return the digest value as a string of hexadecimal digits.");
+
+static PyObject *
+SHA256_hexdigest(SHAobject *self, PyObject *args)
+{
+ unsigned char digest[SHA_DIGESTSIZE];
+ SHAobject temp;
+ PyObject *retval;
+ char *hex_digest;
+ int i, j;
+
+ if (!PyArg_ParseTuple(args, ":hexdigest"))
+ return NULL;
+
+ /* Get the raw (binary) digest value */
+ SHAcopy(self, &temp);
+ sha_final(digest, &temp);
+
+ /* Create a new string */
+ retval = PyString_FromStringAndSize(NULL, self->digestsize * 2);
+ if (!retval)
+ return NULL;
+ hex_digest = PyString_AsString(retval);
+ if (!hex_digest) {
+ Py_DECREF(retval);
+ return NULL;
+ }
+
+ /* Make hex version of the digest */
+ for(i=j=0; i<self->digestsize; i++) {
+ char c;
+ c = (digest[i] >> 4) & 0xf;
+ c = (c>9) ? c+'a'-10 : c + '0';
+ hex_digest[j++] = c;
+ c = (digest[i] & 0xf);
+ c = (c>9) ? c+'a'-10 : c + '0';
+ hex_digest[j++] = c;
+ }
+ return retval;
+}
+
+PyDoc_STRVAR(SHA256_update__doc__,
+"Update this hash object's state with the provided string.");
+
+static PyObject *
+SHA256_update(SHAobject *self, PyObject *args)
+{
+ unsigned char *cp;
+ int len;
+
+ if (!PyArg_ParseTuple(args, "s#:update", &cp, &len))
+ return NULL;
+
+ sha_update(self, cp, len);
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyMethodDef SHA_methods[] = {
+ {"copy", (PyCFunction)SHA256_copy, METH_VARARGS, SHA256_copy__doc__},
+ {"digest", (PyCFunction)SHA256_digest, METH_VARARGS, SHA256_digest__doc__},
+ {"hexdigest", (PyCFunction)SHA256_hexdigest, METH_VARARGS, SHA256_hexdigest__doc__},
+ {"update", (PyCFunction)SHA256_update, METH_VARARGS, SHA256_update__doc__},
+ {NULL, NULL} /* sentinel */
+};
+
+static PyObject *
+SHA256_get_block_size(PyObject *self, void *closure)
+{
+ return PyInt_FromLong(SHA_BLOCKSIZE);
+}
+
+static PyObject *
+SHA256_get_name(PyObject *self, void *closure)
+{
+ if (((SHAobject *)self)->digestsize == 32)
+ return PyString_FromStringAndSize("SHA256", 6);
+ else
+ return PyString_FromStringAndSize("SHA224", 6);
+}
+
+static PyGetSetDef SHA_getseters[] = {
+ {"block_size",
+ (getter)SHA256_get_block_size, NULL,
+ NULL,
+ NULL},
+ {"name",
+ (getter)SHA256_get_name, NULL,
+ NULL,
+ NULL},
+ {NULL} /* Sentinel */
+};
+
+static PyMemberDef SHA_members[] = {
+ {"digest_size", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL},
+ /* the old md5 and sha modules support 'digest_size' as in PEP 247.
+ * the old sha module also supported 'digestsize'. ugh. */
+ {"digestsize", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL},
+ {NULL} /* Sentinel */
+};
+
+static PyTypeObject SHA224type = {
+ PyObject_HEAD_INIT(NULL)
+ 0, /*ob_size*/
+ "_sha256.sha224", /*tp_name*/
+ sizeof(SHAobject), /*tp_size*/
+ 0, /*tp_itemsize*/
+ /* methods */
+ SHA_dealloc, /*tp_dealloc*/
+ 0, /*tp_print*/
+ 0, /*tp_getattr*/
+ 0, /*tp_setattr*/
+ 0, /*tp_compare*/
+ 0, /*tp_repr*/
+ 0, /*tp_as_number*/
+ 0, /*tp_as_sequence*/
+ 0, /*tp_as_mapping*/
+ 0, /*tp_hash*/
+ 0, /*tp_call*/
+ 0, /*tp_str*/
+ 0, /*tp_getattro*/
+ 0, /*tp_setattro*/
+ 0, /*tp_as_buffer*/
+ Py_TPFLAGS_DEFAULT, /*tp_flags*/
+ 0, /*tp_doc*/
+ 0, /*tp_traverse*/
+ 0, /*tp_clear*/
+ 0, /*tp_richcompare*/
+ 0, /*tp_weaklistoffset*/
+ 0, /*tp_iter*/
+ 0, /*tp_iternext*/
+ SHA_methods, /* tp_methods */
+ SHA_members, /* tp_members */
+ SHA_getseters, /* tp_getset */
+};
+
+static PyTypeObject SHA256type = {
+ PyObject_HEAD_INIT(NULL)
+ 0, /*ob_size*/
+ "_sha256.sha256", /*tp_name*/
+ sizeof(SHAobject), /*tp_size*/
+ 0, /*tp_itemsize*/
+ /* methods */
+ SHA_dealloc, /*tp_dealloc*/
+ 0, /*tp_print*/
+ 0, /*tp_getattr*/
+ 0, /*tp_setattr*/
+ 0, /*tp_compare*/
+ 0, /*tp_repr*/
+ 0, /*tp_as_number*/
+ 0, /*tp_as_sequence*/
+ 0, /*tp_as_mapping*/
+ 0, /*tp_hash*/
+ 0, /*tp_call*/
+ 0, /*tp_str*/
+ 0, /*tp_getattro*/
+ 0, /*tp_setattro*/
+ 0, /*tp_as_buffer*/
+ Py_TPFLAGS_DEFAULT, /*tp_flags*/
+ 0, /*tp_doc*/
+ 0, /*tp_traverse*/
+ 0, /*tp_clear*/
+ 0, /*tp_richcompare*/
+ 0, /*tp_weaklistoffset*/
+ 0, /*tp_iter*/
+ 0, /*tp_iternext*/
+ SHA_methods, /* tp_methods */
+ SHA_members, /* tp_members */
+ SHA_getseters, /* tp_getset */
+};
+
+
+/* The single module-level function: new() */
+
+PyDoc_STRVAR(SHA256_new__doc__,
+"Return a new SHA-256 hash object; optionally initialized with a string.");
+
+static PyObject *
+SHA256_new(PyObject *self, PyObject *args, PyObject *kwdict)
+{
+ static char *kwlist[] = {"string", NULL};
+ SHAobject *new;
+ unsigned char *cp = NULL;
+ int len;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s#:new", kwlist,
+ &cp, &len)) {
+ return NULL;
+ }
+
+ if ((new = newSHA256object()) == NULL)
+ return NULL;
+
+ sha_init(new);
+
+ if (PyErr_Occurred()) {
+ Py_DECREF(new);
+ return NULL;
+ }
+ if (cp)
+ sha_update(new, cp, len);
+
+ return (PyObject *)new;
+}
+
+PyDoc_STRVAR(SHA224_new__doc__,
+"Return a new SHA-224 hash object; optionally initialized with a string.");
+
+static PyObject *
+SHA224_new(PyObject *self, PyObject *args, PyObject *kwdict)
+{
+ static char *kwlist[] = {"string", NULL};
+ SHAobject *new;
+ unsigned char *cp = NULL;
+ int len;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s#:new", kwlist,
+ &cp, &len)) {
+ return NULL;
+ }
+
+ if ((new = newSHA224object()) == NULL)
+ return NULL;
+
+ sha224_init(new);
+
+ if (PyErr_Occurred()) {
+ Py_DECREF(new);
+ return NULL;
+ }
+ if (cp)
+ sha_update(new, cp, len);
+
+ return (PyObject *)new;
+}
+
+
+/* List of functions exported by this module */
+
+static struct PyMethodDef SHA_functions[] = {
+ {"sha256", (PyCFunction)SHA256_new, METH_VARARGS|METH_KEYWORDS, SHA256_new__doc__},
+ {"sha224", (PyCFunction)SHA224_new, METH_VARARGS|METH_KEYWORDS, SHA224_new__doc__},
+ {NULL, NULL} /* Sentinel */
+};
+
+
+/* Initialize this module. */
+
+#define insint(n,v) { PyModule_AddIntConstant(m,n,v); }
+
+PyMODINIT_FUNC
+init_sha256(void)
+{
+ PyObject *m;
+
+ SHA224type.ob_type = &PyType_Type;
+ if (PyType_Ready(&SHA224type) < 0)
+ return;
+ SHA256type.ob_type = &PyType_Type;
+ if (PyType_Ready(&SHA256type) < 0)
+ return;
+ m = Py_InitModule("_sha256", SHA_functions);
+}
diff --git a/Modules/sha512module.c b/Modules/sha512module.c
new file mode 100644
index 0000000..0d97fb6
--- /dev/null
+++ b/Modules/sha512module.c
@@ -0,0 +1,777 @@
+/* SHA512 module */
+
+/* This module provides an interface to NIST's SHA-512 and SHA-384 Algorithms */
+
+/* See below for information about the original code this module was
+ based upon. Additional work performed by:
+
+ Andrew Kuchling (amk@amk.ca)
+ Greg Stein (gstein@lyra.org)
+ Trevor Perrin (trevp@trevp.net)
+
+ Copyright (C) 2005 Gregory P. Smith (greg@electricrain.com)
+ Licensed to PSF under a Contributor Agreement.
+
+*/
+
+/* SHA objects */
+
+#include "Python.h"
+#include "structmember.h"
+
+#ifdef PY_LONG_LONG /* If no PY_LONG_LONG, don't compile anything! */
+
+/* Endianness testing and definitions */
+#define TestEndianness(variable) {int i=1; variable=PCT_BIG_ENDIAN;\
+ if (*((char*)&i)==1) variable=PCT_LITTLE_ENDIAN;}
+
+#define PCT_LITTLE_ENDIAN 1
+#define PCT_BIG_ENDIAN 0
+
+/* Some useful types */
+
+typedef unsigned char SHA_BYTE;
+
+#if SIZEOF_INT == 4
+typedef unsigned int SHA_INT32; /* 32-bit integer */
+typedef unsigned PY_LONG_LONG SHA_INT64; /* 64-bit integer */
+#else
+/* not defined. compilation will die. */
+#endif
+
+/* The SHA block size and message digest sizes, in bytes */
+
+#define SHA_BLOCKSIZE 128
+#define SHA_DIGESTSIZE 64
+
+/* The structure for storing SHA info */
+
+typedef struct {
+ PyObject_HEAD
+ SHA_INT64 digest[8]; /* Message digest */
+ SHA_INT32 count_lo, count_hi; /* 64-bit bit count */
+ SHA_BYTE data[SHA_BLOCKSIZE]; /* SHA data buffer */
+ int Endianness;
+ int local; /* unprocessed amount in data */
+ int digestsize;
+} SHAobject;
+
+/* When run on a little-endian CPU we need to perform byte reversal on an
+ array of longwords. */
+
+static void longReverse(SHA_INT64 *buffer, int byteCount, int Endianness)
+{
+ SHA_INT64 value;
+
+ if ( Endianness == PCT_BIG_ENDIAN )
+ return;
+
+ byteCount /= sizeof(*buffer);
+ while (byteCount--) {
+ value = *buffer;
+
+ ((unsigned char*)buffer)[0] = (unsigned char)(value >> 56) & 0xff;
+ ((unsigned char*)buffer)[1] = (unsigned char)(value >> 48) & 0xff;
+ ((unsigned char*)buffer)[2] = (unsigned char)(value >> 40) & 0xff;
+ ((unsigned char*)buffer)[3] = (unsigned char)(value >> 32) & 0xff;
+ ((unsigned char*)buffer)[4] = (unsigned char)(value >> 24) & 0xff;
+ ((unsigned char*)buffer)[5] = (unsigned char)(value >> 16) & 0xff;
+ ((unsigned char*)buffer)[6] = (unsigned char)(value >> 8) & 0xff;
+ ((unsigned char*)buffer)[7] = (unsigned char)(value ) & 0xff;
+
+ buffer++;
+ }
+}
+
+static void SHAcopy(SHAobject *src, SHAobject *dest)
+{
+ dest->Endianness = src->Endianness;
+ dest->local = src->local;
+ dest->digestsize = src->digestsize;
+ dest->count_lo = src->count_lo;
+ dest->count_hi = src->count_hi;
+ memcpy(dest->digest, src->digest, sizeof(src->digest));
+ memcpy(dest->data, src->data, sizeof(src->data));
+}
+
+
+/* ------------------------------------------------------------------------
+ *
+ * This code for the SHA-512 algorithm was noted as public domain. The
+ * original headers are pasted below.
+ *
+ * Several changes have been made to make it more compatible with the
+ * Python environment and desired interface.
+ *
+ */
+
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * gurantee it works.
+ *
+ * Tom St Denis, tomstdenis@iahu.ca, http://libtomcrypt.org
+ */
+
+
+/* SHA512 by Tom St Denis */
+
+/* Various logical functions */
+#define ROR64(x, y) \
+ ( ((((x) & 0xFFFFFFFFFFFFFFFFULL)>>((unsigned PY_LONG_LONG)(y) & 63)) | \
+ ((x)<<((unsigned PY_LONG_LONG)(64-((y) & 63))))) & 0xFFFFFFFFFFFFFFFFULL)
+#define Ch(x,y,z) (z ^ (x & (y ^ z)))
+#define Maj(x,y,z) (((x | y) & z) | (x & y))
+#define S(x, n) ROR64((x),(n))
+#define R(x, n) (((x) & 0xFFFFFFFFFFFFFFFFULL) >> ((unsigned PY_LONG_LONG)n))
+#define Sigma0(x) (S(x, 28) ^ S(x, 34) ^ S(x, 39))
+#define Sigma1(x) (S(x, 14) ^ S(x, 18) ^ S(x, 41))
+#define Gamma0(x) (S(x, 1) ^ S(x, 8) ^ R(x, 7))
+#define Gamma1(x) (S(x, 19) ^ S(x, 61) ^ R(x, 6))
+
+
+static void
+sha512_transform(SHAobject *sha_info)
+{
+ int i;
+ SHA_INT64 S[8], W[80], t0, t1;
+
+ memcpy(W, sha_info->data, sizeof(sha_info->data));
+ longReverse(W, (int)sizeof(sha_info->data), sha_info->Endianness);
+
+ for (i = 16; i < 80; ++i) {
+ W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
+ }
+ for (i = 0; i < 8; ++i) {
+ S[i] = sha_info->digest[i];
+ }
+
+ /* Compress */
+#define RND(a,b,c,d,e,f,g,h,i,ki) \
+ t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \
+ t1 = Sigma0(a) + Maj(a, b, c); \
+ d += t0; \
+ h = t0 + t1;
+
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],0,0x428a2f98d728ae22ULL);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],1,0x7137449123ef65cdULL);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],2,0xb5c0fbcfec4d3b2fULL);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],3,0xe9b5dba58189dbbcULL);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],4,0x3956c25bf348b538ULL);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],5,0x59f111f1b605d019ULL);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],6,0x923f82a4af194f9bULL);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],7,0xab1c5ed5da6d8118ULL);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],8,0xd807aa98a3030242ULL);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],9,0x12835b0145706fbeULL);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],10,0x243185be4ee4b28cULL);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],11,0x550c7dc3d5ffb4e2ULL);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],12,0x72be5d74f27b896fULL);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],13,0x80deb1fe3b1696b1ULL);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],14,0x9bdc06a725c71235ULL);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],15,0xc19bf174cf692694ULL);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],16,0xe49b69c19ef14ad2ULL);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],17,0xefbe4786384f25e3ULL);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],18,0x0fc19dc68b8cd5b5ULL);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],19,0x240ca1cc77ac9c65ULL);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],20,0x2de92c6f592b0275ULL);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],21,0x4a7484aa6ea6e483ULL);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],22,0x5cb0a9dcbd41fbd4ULL);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],23,0x76f988da831153b5ULL);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],24,0x983e5152ee66dfabULL);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],25,0xa831c66d2db43210ULL);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],26,0xb00327c898fb213fULL);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],27,0xbf597fc7beef0ee4ULL);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],28,0xc6e00bf33da88fc2ULL);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],29,0xd5a79147930aa725ULL);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],30,0x06ca6351e003826fULL);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],31,0x142929670a0e6e70ULL);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],32,0x27b70a8546d22ffcULL);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],33,0x2e1b21385c26c926ULL);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],34,0x4d2c6dfc5ac42aedULL);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],35,0x53380d139d95b3dfULL);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],36,0x650a73548baf63deULL);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],37,0x766a0abb3c77b2a8ULL);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],38,0x81c2c92e47edaee6ULL);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],39,0x92722c851482353bULL);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],40,0xa2bfe8a14cf10364ULL);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],41,0xa81a664bbc423001ULL);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],42,0xc24b8b70d0f89791ULL);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],43,0xc76c51a30654be30ULL);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],44,0xd192e819d6ef5218ULL);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],45,0xd69906245565a910ULL);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],46,0xf40e35855771202aULL);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],47,0x106aa07032bbd1b8ULL);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],48,0x19a4c116b8d2d0c8ULL);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],49,0x1e376c085141ab53ULL);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],50,0x2748774cdf8eeb99ULL);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],51,0x34b0bcb5e19b48a8ULL);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],52,0x391c0cb3c5c95a63ULL);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],53,0x4ed8aa4ae3418acbULL);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],54,0x5b9cca4f7763e373ULL);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],55,0x682e6ff3d6b2b8a3ULL);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],56,0x748f82ee5defb2fcULL);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],57,0x78a5636f43172f60ULL);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],58,0x84c87814a1f0ab72ULL);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],59,0x8cc702081a6439ecULL);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],60,0x90befffa23631e28ULL);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],61,0xa4506cebde82bde9ULL);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],62,0xbef9a3f7b2c67915ULL);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],63,0xc67178f2e372532bULL);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],64,0xca273eceea26619cULL);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],65,0xd186b8c721c0c207ULL);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],66,0xeada7dd6cde0eb1eULL);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],67,0xf57d4f7fee6ed178ULL);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],68,0x06f067aa72176fbaULL);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],69,0x0a637dc5a2c898a6ULL);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],70,0x113f9804bef90daeULL);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],71,0x1b710b35131c471bULL);
+ RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],72,0x28db77f523047d84ULL);
+ RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],73,0x32caab7b40c72493ULL);
+ RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],74,0x3c9ebe0a15c9bebcULL);
+ RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],75,0x431d67c49c100d4cULL);
+ RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],76,0x4cc5d4becb3e42b6ULL);
+ RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],77,0x597f299cfc657e2aULL);
+ RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],78,0x5fcb6fab3ad6faecULL);
+ RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],79,0x6c44198c4a475817ULL);
+
+#undef RND
+
+ /* feedback */
+ for (i = 0; i < 8; i++) {
+ sha_info->digest[i] = sha_info->digest[i] + S[i];
+ }
+
+}
+
+
+
+/* initialize the SHA digest */
+
+static void
+sha512_init(SHAobject *sha_info)
+{
+ TestEndianness(sha_info->Endianness)
+ sha_info->digest[0] = 0x6a09e667f3bcc908ULL;
+ sha_info->digest[1] = 0xbb67ae8584caa73bULL;
+ sha_info->digest[2] = 0x3c6ef372fe94f82bULL;
+ sha_info->digest[3] = 0xa54ff53a5f1d36f1ULL;
+ sha_info->digest[4] = 0x510e527fade682d1ULL;
+ sha_info->digest[5] = 0x9b05688c2b3e6c1fULL;
+ sha_info->digest[6] = 0x1f83d9abfb41bd6bULL;
+ sha_info->digest[7] = 0x5be0cd19137e2179ULL;
+ sha_info->count_lo = 0L;
+ sha_info->count_hi = 0L;
+ sha_info->local = 0;
+ sha_info->digestsize = 64;
+}
+
+static void
+sha384_init(SHAobject *sha_info)
+{
+ TestEndianness(sha_info->Endianness)
+ sha_info->digest[0] = 0xcbbb9d5dc1059ed8ULL;
+ sha_info->digest[1] = 0x629a292a367cd507ULL;
+ sha_info->digest[2] = 0x9159015a3070dd17ULL;
+ sha_info->digest[3] = 0x152fecd8f70e5939ULL;
+ sha_info->digest[4] = 0x67332667ffc00b31ULL;
+ sha_info->digest[5] = 0x8eb44a8768581511ULL;
+ sha_info->digest[6] = 0xdb0c2e0d64f98fa7ULL;
+ sha_info->digest[7] = 0x47b5481dbefa4fa4ULL;
+ sha_info->count_lo = 0L;
+ sha_info->count_hi = 0L;
+ sha_info->local = 0;
+ sha_info->digestsize = 48;
+}
+
+
+/* update the SHA digest */
+
+static void
+sha512_update(SHAobject *sha_info, SHA_BYTE *buffer, int count)
+{
+ int i;
+ SHA_INT32 clo;
+
+ clo = sha_info->count_lo + ((SHA_INT32) count << 3);
+ if (clo < sha_info->count_lo) {
+ ++sha_info->count_hi;
+ }
+ sha_info->count_lo = clo;
+ sha_info->count_hi += (SHA_INT32) count >> 29;
+ if (sha_info->local) {
+ i = SHA_BLOCKSIZE - sha_info->local;
+ if (i > count) {
+ i = count;
+ }
+ memcpy(((SHA_BYTE *) sha_info->data) + sha_info->local, buffer, i);
+ count -= i;
+ buffer += i;
+ sha_info->local += i;
+ if (sha_info->local == SHA_BLOCKSIZE) {
+ sha512_transform(sha_info);
+ }
+ else {
+ return;
+ }
+ }
+ while (count >= SHA_BLOCKSIZE) {
+ memcpy(sha_info->data, buffer, SHA_BLOCKSIZE);
+ buffer += SHA_BLOCKSIZE;
+ count -= SHA_BLOCKSIZE;
+ sha512_transform(sha_info);
+ }
+ memcpy(sha_info->data, buffer, count);
+ sha_info->local = count;
+}
+
+/* finish computing the SHA digest */
+
+static void
+sha512_final(unsigned char digest[SHA_DIGESTSIZE], SHAobject *sha_info)
+{
+ int count;
+ SHA_INT32 lo_bit_count, hi_bit_count;
+
+ lo_bit_count = sha_info->count_lo;
+ hi_bit_count = sha_info->count_hi;
+ count = (int) ((lo_bit_count >> 3) & 0x7f);
+ ((SHA_BYTE *) sha_info->data)[count++] = 0x80;
+ if (count > SHA_BLOCKSIZE - 16) {
+ memset(((SHA_BYTE *) sha_info->data) + count, 0,
+ SHA_BLOCKSIZE - count);
+ sha512_transform(sha_info);
+ memset((SHA_BYTE *) sha_info->data, 0, SHA_BLOCKSIZE - 16);
+ }
+ else {
+ memset(((SHA_BYTE *) sha_info->data) + count, 0,
+ SHA_BLOCKSIZE - 16 - count);
+ }
+
+ /* GJS: note that we add the hi/lo in big-endian. sha512_transform will
+ swap these values into host-order. */
+ sha_info->data[112] = 0;
+ sha_info->data[113] = 0;
+ sha_info->data[114] = 0;
+ sha_info->data[115] = 0;
+ sha_info->data[116] = 0;
+ sha_info->data[117] = 0;
+ sha_info->data[118] = 0;
+ sha_info->data[119] = 0;
+ sha_info->data[120] = (hi_bit_count >> 24) & 0xff;
+ sha_info->data[121] = (hi_bit_count >> 16) & 0xff;
+ sha_info->data[122] = (hi_bit_count >> 8) & 0xff;
+ sha_info->data[123] = (hi_bit_count >> 0) & 0xff;
+ sha_info->data[124] = (lo_bit_count >> 24) & 0xff;
+ sha_info->data[125] = (lo_bit_count >> 16) & 0xff;
+ sha_info->data[126] = (lo_bit_count >> 8) & 0xff;
+ sha_info->data[127] = (lo_bit_count >> 0) & 0xff;
+ sha512_transform(sha_info);
+ digest[ 0] = (unsigned char) ((sha_info->digest[0] >> 56) & 0xff);
+ digest[ 1] = (unsigned char) ((sha_info->digest[0] >> 48) & 0xff);
+ digest[ 2] = (unsigned char) ((sha_info->digest[0] >> 40) & 0xff);
+ digest[ 3] = (unsigned char) ((sha_info->digest[0] >> 32) & 0xff);
+ digest[ 4] = (unsigned char) ((sha_info->digest[0] >> 24) & 0xff);
+ digest[ 5] = (unsigned char) ((sha_info->digest[0] >> 16) & 0xff);
+ digest[ 6] = (unsigned char) ((sha_info->digest[0] >> 8) & 0xff);
+ digest[ 7] = (unsigned char) ((sha_info->digest[0] ) & 0xff);
+ digest[ 8] = (unsigned char) ((sha_info->digest[1] >> 56) & 0xff);
+ digest[ 9] = (unsigned char) ((sha_info->digest[1] >> 48) & 0xff);
+ digest[10] = (unsigned char) ((sha_info->digest[1] >> 40) & 0xff);
+ digest[11] = (unsigned char) ((sha_info->digest[1] >> 32) & 0xff);
+ digest[12] = (unsigned char) ((sha_info->digest[1] >> 24) & 0xff);
+ digest[13] = (unsigned char) ((sha_info->digest[1] >> 16) & 0xff);
+ digest[14] = (unsigned char) ((sha_info->digest[1] >> 8) & 0xff);
+ digest[15] = (unsigned char) ((sha_info->digest[1] ) & 0xff);
+ digest[16] = (unsigned char) ((sha_info->digest[2] >> 56) & 0xff);
+ digest[17] = (unsigned char) ((sha_info->digest[2] >> 48) & 0xff);
+ digest[18] = (unsigned char) ((sha_info->digest[2] >> 40) & 0xff);
+ digest[19] = (unsigned char) ((sha_info->digest[2] >> 32) & 0xff);
+ digest[20] = (unsigned char) ((sha_info->digest[2] >> 24) & 0xff);
+ digest[21] = (unsigned char) ((sha_info->digest[2] >> 16) & 0xff);
+ digest[22] = (unsigned char) ((sha_info->digest[2] >> 8) & 0xff);
+ digest[23] = (unsigned char) ((sha_info->digest[2] ) & 0xff);
+ digest[24] = (unsigned char) ((sha_info->digest[3] >> 56) & 0xff);
+ digest[25] = (unsigned char) ((sha_info->digest[3] >> 48) & 0xff);
+ digest[26] = (unsigned char) ((sha_info->digest[3] >> 40) & 0xff);
+ digest[27] = (unsigned char) ((sha_info->digest[3] >> 32) & 0xff);
+ digest[28] = (unsigned char) ((sha_info->digest[3] >> 24) & 0xff);
+ digest[29] = (unsigned char) ((sha_info->digest[3] >> 16) & 0xff);
+ digest[30] = (unsigned char) ((sha_info->digest[3] >> 8) & 0xff);
+ digest[31] = (unsigned char) ((sha_info->digest[3] ) & 0xff);
+ digest[32] = (unsigned char) ((sha_info->digest[4] >> 56) & 0xff);
+ digest[33] = (unsigned char) ((sha_info->digest[4] >> 48) & 0xff);
+ digest[34] = (unsigned char) ((sha_info->digest[4] >> 40) & 0xff);
+ digest[35] = (unsigned char) ((sha_info->digest[4] >> 32) & 0xff);
+ digest[36] = (unsigned char) ((sha_info->digest[4] >> 24) & 0xff);
+ digest[37] = (unsigned char) ((sha_info->digest[4] >> 16) & 0xff);
+ digest[38] = (unsigned char) ((sha_info->digest[4] >> 8) & 0xff);
+ digest[39] = (unsigned char) ((sha_info->digest[4] ) & 0xff);
+ digest[40] = (unsigned char) ((sha_info->digest[5] >> 56) & 0xff);
+ digest[41] = (unsigned char) ((sha_info->digest[5] >> 48) & 0xff);
+ digest[42] = (unsigned char) ((sha_info->digest[5] >> 40) & 0xff);
+ digest[43] = (unsigned char) ((sha_info->digest[5] >> 32) & 0xff);
+ digest[44] = (unsigned char) ((sha_info->digest[5] >> 24) & 0xff);
+ digest[45] = (unsigned char) ((sha_info->digest[5] >> 16) & 0xff);
+ digest[46] = (unsigned char) ((sha_info->digest[5] >> 8) & 0xff);
+ digest[47] = (unsigned char) ((sha_info->digest[5] ) & 0xff);
+ digest[48] = (unsigned char) ((sha_info->digest[6] >> 56) & 0xff);
+ digest[49] = (unsigned char) ((sha_info->digest[6] >> 48) & 0xff);
+ digest[50] = (unsigned char) ((sha_info->digest[6] >> 40) & 0xff);
+ digest[51] = (unsigned char) ((sha_info->digest[6] >> 32) & 0xff);
+ digest[52] = (unsigned char) ((sha_info->digest[6] >> 24) & 0xff);
+ digest[53] = (unsigned char) ((sha_info->digest[6] >> 16) & 0xff);
+ digest[54] = (unsigned char) ((sha_info->digest[6] >> 8) & 0xff);
+ digest[55] = (unsigned char) ((sha_info->digest[6] ) & 0xff);
+ digest[56] = (unsigned char) ((sha_info->digest[7] >> 56) & 0xff);
+ digest[57] = (unsigned char) ((sha_info->digest[7] >> 48) & 0xff);
+ digest[58] = (unsigned char) ((sha_info->digest[7] >> 40) & 0xff);
+ digest[59] = (unsigned char) ((sha_info->digest[7] >> 32) & 0xff);
+ digest[60] = (unsigned char) ((sha_info->digest[7] >> 24) & 0xff);
+ digest[61] = (unsigned char) ((sha_info->digest[7] >> 16) & 0xff);
+ digest[62] = (unsigned char) ((sha_info->digest[7] >> 8) & 0xff);
+ digest[63] = (unsigned char) ((sha_info->digest[7] ) & 0xff);
+}
+
+/*
+ * End of copied SHA code.
+ *
+ * ------------------------------------------------------------------------
+ */
+
+static PyTypeObject SHA384type;
+static PyTypeObject SHA512type;
+
+
+static SHAobject *
+newSHA384object(void)
+{
+ return (SHAobject *)PyObject_New(SHAobject, &SHA384type);
+}
+
+static SHAobject *
+newSHA512object(void)
+{
+ return (SHAobject *)PyObject_New(SHAobject, &SHA512type);
+}
+
+/* Internal methods for a hash object */
+
+static void
+SHA512_dealloc(PyObject *ptr)
+{
+ PyObject_Del(ptr);
+}
+
+
+/* External methods for a hash object */
+
+PyDoc_STRVAR(SHA512_copy__doc__, "Return a copy of the hash object.");
+
+static PyObject *
+SHA512_copy(SHAobject *self, PyObject *args)
+{
+ SHAobject *newobj;
+
+ if (!PyArg_ParseTuple(args, ":copy")) {
+ return NULL;
+ }
+
+ if (((PyObject*)self)->ob_type == &SHA512type) {
+ if ( (newobj = newSHA512object())==NULL)
+ return NULL;
+ } else {
+ if ( (newobj = newSHA384object())==NULL)
+ return NULL;
+ }
+
+ SHAcopy(self, newobj);
+ return (PyObject *)newobj;
+}
+
+PyDoc_STRVAR(SHA512_digest__doc__,
+"Return the digest value as a string of binary data.");
+
+static PyObject *
+SHA512_digest(SHAobject *self, PyObject *args)
+{
+ unsigned char digest[SHA_DIGESTSIZE];
+ SHAobject temp;
+
+ if (!PyArg_ParseTuple(args, ":digest"))
+ return NULL;
+
+ SHAcopy(self, &temp);
+ sha512_final(digest, &temp);
+ return PyString_FromStringAndSize((const char *)digest, self->digestsize);
+}
+
+PyDoc_STRVAR(SHA512_hexdigest__doc__,
+"Return the digest value as a string of hexadecimal digits.");
+
+static PyObject *
+SHA512_hexdigest(SHAobject *self, PyObject *args)
+{
+ unsigned char digest[SHA_DIGESTSIZE];
+ SHAobject temp;
+ PyObject *retval;
+ char *hex_digest;
+ int i, j;
+
+ if (!PyArg_ParseTuple(args, ":hexdigest"))
+ return NULL;
+
+ /* Get the raw (binary) digest value */
+ SHAcopy(self, &temp);
+ sha512_final(digest, &temp);
+
+ /* Create a new string */
+ retval = PyString_FromStringAndSize(NULL, self->digestsize * 2);
+ if (!retval)
+ return NULL;
+ hex_digest = PyString_AsString(retval);
+ if (!hex_digest) {
+ Py_DECREF(retval);
+ return NULL;
+ }
+
+ /* Make hex version of the digest */
+ for(i=j=0; i<self->digestsize; i++) {
+ char c;
+ c = (digest[i] >> 4) & 0xf;
+ c = (c>9) ? c+'a'-10 : c + '0';
+ hex_digest[j++] = c;
+ c = (digest[i] & 0xf);
+ c = (c>9) ? c+'a'-10 : c + '0';
+ hex_digest[j++] = c;
+ }
+ return retval;
+}
+
+PyDoc_STRVAR(SHA512_update__doc__,
+"Update this hash object's state with the provided string.");
+
+static PyObject *
+SHA512_update(SHAobject *self, PyObject *args)
+{
+ unsigned char *cp;
+ int len;
+
+ if (!PyArg_ParseTuple(args, "s#:update", &cp, &len))
+ return NULL;
+
+ sha512_update(self, cp, len);
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyMethodDef SHA_methods[] = {
+ {"copy", (PyCFunction)SHA512_copy, METH_VARARGS, SHA512_copy__doc__},
+ {"digest", (PyCFunction)SHA512_digest, METH_VARARGS, SHA512_digest__doc__},
+ {"hexdigest", (PyCFunction)SHA512_hexdigest, METH_VARARGS, SHA512_hexdigest__doc__},
+ {"update", (PyCFunction)SHA512_update, METH_VARARGS, SHA512_update__doc__},
+ {NULL, NULL} /* sentinel */
+};
+
+static PyObject *
+SHA512_get_block_size(PyObject *self, void *closure)
+{
+ return PyInt_FromLong(SHA_BLOCKSIZE);
+}
+
+static PyObject *
+SHA512_get_name(PyObject *self, void *closure)
+{
+ if (((SHAobject *)self)->digestsize == 64)
+ return PyString_FromStringAndSize("SHA512", 6);
+ else
+ return PyString_FromStringAndSize("SHA384", 6);
+}
+
+static PyGetSetDef SHA_getseters[] = {
+ {"block_size",
+ (getter)SHA512_get_block_size, NULL,
+ NULL,
+ NULL},
+ {"name",
+ (getter)SHA512_get_name, NULL,
+ NULL,
+ NULL},
+ {NULL} /* Sentinel */
+};
+
+static PyMemberDef SHA_members[] = {
+ {"digest_size", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL},
+ /* the old md5 and sha modules support 'digest_size' as in PEP 247.
+ * the old sha module also supported 'digestsize'. ugh. */
+ {"digestsize", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL},
+ {NULL} /* Sentinel */
+};
+
+static PyTypeObject SHA384type = {
+ PyObject_HEAD_INIT(NULL)
+ 0, /*ob_size*/
+ "_sha512.sha384", /*tp_name*/
+ sizeof(SHAobject), /*tp_size*/
+ 0, /*tp_itemsize*/
+ /* methods */
+ SHA512_dealloc, /*tp_dealloc*/
+ 0, /*tp_print*/
+ 0, /*tp_getattr*/
+ 0, /*tp_setattr*/
+ 0, /*tp_compare*/
+ 0, /*tp_repr*/
+ 0, /*tp_as_number*/
+ 0, /*tp_as_sequence*/
+ 0, /*tp_as_mapping*/
+ 0, /*tp_hash*/
+ 0, /*tp_call*/
+ 0, /*tp_str*/
+ 0, /*tp_getattro*/
+ 0, /*tp_setattro*/
+ 0, /*tp_as_buffer*/
+ Py_TPFLAGS_DEFAULT, /*tp_flags*/
+ 0, /*tp_doc*/
+ 0, /*tp_traverse*/
+ 0, /*tp_clear*/
+ 0, /*tp_richcompare*/
+ 0, /*tp_weaklistoffset*/
+ 0, /*tp_iter*/
+ 0, /*tp_iternext*/
+ SHA_methods, /* tp_methods */
+ SHA_members, /* tp_members */
+ SHA_getseters, /* tp_getset */
+};
+
+static PyTypeObject SHA512type = {
+ PyObject_HEAD_INIT(NULL)
+ 0, /*ob_size*/
+ "_sha512.sha512", /*tp_name*/
+ sizeof(SHAobject), /*tp_size*/
+ 0, /*tp_itemsize*/
+ /* methods */
+ SHA512_dealloc, /*tp_dealloc*/
+ 0, /*tp_print*/
+ 0, /*tp_getattr*/
+ 0, /*tp_setattr*/
+ 0, /*tp_compare*/
+ 0, /*tp_repr*/
+ 0, /*tp_as_number*/
+ 0, /*tp_as_sequence*/
+ 0, /*tp_as_mapping*/
+ 0, /*tp_hash*/
+ 0, /*tp_call*/
+ 0, /*tp_str*/
+ 0, /*tp_getattro*/
+ 0, /*tp_setattro*/
+ 0, /*tp_as_buffer*/
+ Py_TPFLAGS_DEFAULT, /*tp_flags*/
+ 0, /*tp_doc*/
+ 0, /*tp_traverse*/
+ 0, /*tp_clear*/
+ 0, /*tp_richcompare*/
+ 0, /*tp_weaklistoffset*/
+ 0, /*tp_iter*/
+ 0, /*tp_iternext*/
+ SHA_methods, /* tp_methods */
+ SHA_members, /* tp_members */
+ SHA_getseters, /* tp_getset */
+};
+
+
+/* The single module-level function: new() */
+
+PyDoc_STRVAR(SHA512_new__doc__,
+"Return a new SHA-512 hash object; optionally initialized with a string.");
+
+static PyObject *
+SHA512_new(PyObject *self, PyObject *args, PyObject *kwdict)
+{
+ static char *kwlist[] = {"string", NULL};
+ SHAobject *new;
+ unsigned char *cp = NULL;
+ int len;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s#:new", kwlist,
+ &cp, &len)) {
+ return NULL;
+ }
+
+ if ((new = newSHA512object()) == NULL)
+ return NULL;
+
+ sha512_init(new);
+
+ if (PyErr_Occurred()) {
+ Py_DECREF(new);
+ return NULL;
+ }
+ if (cp)
+ sha512_update(new, cp, len);
+
+ return (PyObject *)new;
+}
+
+PyDoc_STRVAR(SHA384_new__doc__,
+"Return a new SHA-384 hash object; optionally initialized with a string.");
+
+static PyObject *
+SHA384_new(PyObject *self, PyObject *args, PyObject *kwdict)
+{
+ static char *kwlist[] = {"string", NULL};
+ SHAobject *new;
+ unsigned char *cp = NULL;
+ int len;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s#:new", kwlist,
+ &cp, &len)) {
+ return NULL;
+ }
+
+ if ((new = newSHA384object()) == NULL)
+ return NULL;
+
+ sha384_init(new);
+
+ if (PyErr_Occurred()) {
+ Py_DECREF(new);
+ return NULL;
+ }
+ if (cp)
+ sha512_update(new, cp, len);
+
+ return (PyObject *)new;
+}
+
+
+/* List of functions exported by this module */
+
+static struct PyMethodDef SHA_functions[] = {
+ {"sha512", (PyCFunction)SHA512_new, METH_VARARGS|METH_KEYWORDS, SHA512_new__doc__},
+ {"sha384", (PyCFunction)SHA384_new, METH_VARARGS|METH_KEYWORDS, SHA384_new__doc__},
+ {NULL, NULL} /* Sentinel */
+};
+
+
+/* Initialize this module. */
+
+#define insint(n,v) { PyModule_AddIntConstant(m,n,v); }
+
+PyMODINIT_FUNC
+init_sha512(void)
+{
+ PyObject *m;
+
+ SHA384type.ob_type = &PyType_Type;
+ if (PyType_Ready(&SHA384type) < 0)
+ return;
+ SHA512type.ob_type = &PyType_Type;
+ if (PyType_Ready(&SHA512type) < 0)
+ return;
+ m = Py_InitModule("_sha512", SHA_functions);
+}
+
+#endif
diff --git a/Modules/shamodule.c b/Modules/shamodule.c
index 1b3b76a..1de61c4 100644
--- a/Modules/shamodule.c
+++ b/Modules/shamodule.c
@@ -7,11 +7,16 @@
Andrew Kuchling (amk@amk.ca)
Greg Stein (gstein@lyra.org)
+
+ Copyright (C) 2005 Gregory P. Smith (greg@electricrain.com)
+ Licensed to PSF under a Contributor Agreement.
+
*/
/* SHA objects */
#include "Python.h"
+#include "structmember.h"
/* Endianness testing and definitions */
@@ -453,26 +458,78 @@ static PyMethodDef SHA_methods[] = {
};
static PyObject *
-SHA_getattr(PyObject *self, char *name)
+SHA_get_block_size(PyObject *self, void *closure)
{
- if (strcmp(name, "blocksize")==0)
- return PyInt_FromLong(1);
- if (strcmp(name, "digest_size")==0 || strcmp(name, "digestsize")==0)
- return PyInt_FromLong(20);
+ return PyInt_FromLong(SHA_BLOCKSIZE);
+}
- return Py_FindMethod(SHA_methods, self, name);
+static PyObject *
+SHA_get_digest_size(PyObject *self, void *closure)
+{
+ return PyInt_FromLong(SHA_DIGESTSIZE);
}
+static PyObject *
+SHA_get_name(PyObject *self, void *closure)
+{
+ return PyString_FromStringAndSize("SHA1", 4);
+}
+
+static PyGetSetDef SHA_getseters[] = {
+ {"digest_size",
+ (getter)SHA_get_digest_size, NULL,
+ NULL,
+ NULL},
+ {"block_size",
+ (getter)SHA_get_block_size, NULL,
+ NULL,
+ NULL},
+ {"name",
+ (getter)SHA_get_name, NULL,
+ NULL,
+ NULL},
+ /* the old md5 and sha modules support 'digest_size' as in PEP 247.
+ * the old sha module also supported 'digestsize'. ugh. */
+ {"digestsize",
+ (getter)SHA_get_digest_size, NULL,
+ NULL,
+ NULL},
+ {NULL} /* Sentinel */
+};
+
static PyTypeObject SHAtype = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
- "sha.SHA", /*tp_name*/
+ "_sha.sha", /*tp_name*/
sizeof(SHAobject), /*tp_size*/
0, /*tp_itemsize*/
/* methods */
SHA_dealloc, /*tp_dealloc*/
0, /*tp_print*/
- SHA_getattr, /*tp_getattr*/
+ 0, /*tp_getattr*/
+ 0, /*tp_setattr*/
+ 0, /*tp_compare*/
+ 0, /*tp_repr*/
+ 0, /*tp_as_number*/
+ 0, /*tp_as_sequence*/
+ 0, /*tp_as_mapping*/
+ 0, /*tp_hash*/
+ 0, /*tp_call*/
+ 0, /*tp_str*/
+ 0, /*tp_getattro*/
+ 0, /*tp_setattro*/
+ 0, /*tp_as_buffer*/
+ Py_TPFLAGS_DEFAULT, /*tp_flags*/
+ 0, /*tp_doc*/
+ 0, /*tp_traverse*/
+ 0, /*tp_clear*/
+ 0, /*tp_richcompare*/
+ 0, /*tp_weaklistoffset*/
+ 0, /*tp_iter*/
+ 0, /*tp_iternext*/
+ SHA_methods, /* tp_methods */
+ 0, /* tp_members */
+ SHA_getseters, /* tp_getset */
};
@@ -516,7 +573,6 @@ SHA_new(PyObject *self, PyObject *args, PyObject *kwdict)
static struct PyMethodDef SHA_functions[] = {
{"new", (PyCFunction)SHA_new, METH_VARARGS|METH_KEYWORDS, SHA_new__doc__},
- {"sha", (PyCFunction)SHA_new, METH_VARARGS|METH_KEYWORDS, SHA_new__doc__},
{NULL, NULL} /* Sentinel */
};
@@ -526,12 +582,14 @@ static struct PyMethodDef SHA_functions[] = {
#define insint(n,v) { PyModule_AddIntConstant(m,n,v); }
PyMODINIT_FUNC
-initsha(void)
+init_sha(void)
{
PyObject *m;
SHAtype.ob_type = &PyType_Type;
- m = Py_InitModule("sha", SHA_functions);
+ if (PyType_Ready(&SHAtype) < 0)
+ return;
+ m = Py_InitModule("_sha", SHA_functions);
/* Add some symbolic constants to the module */
insint("blocksize", 1); /* For future use, in case some hash
generated by cgit v0.12 at 2024-11-25 22:36:27 (GMT)