diff options
Diffstat (limited to 'openssl/crypto/evp/p_lib.c')
| -rw-r--r-- | openssl/crypto/evp/p_lib.c | 464 |
1 files changed, 464 insertions, 0 deletions
diff --git a/openssl/crypto/evp/p_lib.c b/openssl/crypto/evp/p_lib.c new file mode 100644 index 0000000..545d04f --- /dev/null +++ b/openssl/crypto/evp/p_lib.c @@ -0,0 +1,464 @@ +/* crypto/evp/p_lib.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include <stdio.h> +#include "cryptlib.h" +#include <openssl/bn.h> +#include <openssl/err.h> +#include <openssl/objects.h> +#include <openssl/evp.h> +#include <openssl/asn1_mac.h> +#include <openssl/x509.h> +#ifndef OPENSSL_NO_RSA +# include <openssl/rsa.h> +#endif +#ifndef OPENSSL_NO_DSA +# include <openssl/dsa.h> +#endif +#ifndef OPENSSL_NO_DH +# include <openssl/dh.h> +#endif + +#ifndef OPENSSL_NO_ENGINE +# include <openssl/engine.h> +#endif + +#include "asn1_locl.h" + +static void EVP_PKEY_free_it(EVP_PKEY *x); + +int EVP_PKEY_bits(EVP_PKEY *pkey) +{ + if (pkey && pkey->ameth && pkey->ameth->pkey_bits) + return pkey->ameth->pkey_bits(pkey); + return 0; +} + +int EVP_PKEY_size(EVP_PKEY *pkey) +{ + if (pkey && pkey->ameth && pkey->ameth->pkey_size) + return pkey->ameth->pkey_size(pkey); + return 0; +} + +int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode) +{ +#ifndef OPENSSL_NO_DSA + if (pkey->type == EVP_PKEY_DSA) { + int ret = pkey->save_parameters; + + if (mode >= 0) + pkey->save_parameters = mode; + return (ret); + } +#endif +#ifndef OPENSSL_NO_EC + if (pkey->type == EVP_PKEY_EC) { + int ret = pkey->save_parameters; + + if (mode >= 0) + pkey->save_parameters = mode; + return (ret); + } +#endif + return (0); +} + +int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) +{ + if (to->type != from->type) { + EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_KEY_TYPES); + goto err; + } + + if (EVP_PKEY_missing_parameters(from)) { + EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_MISSING_PARAMETERS); + goto err; + } + + if (!EVP_PKEY_missing_parameters(to)) { + if (EVP_PKEY_cmp_parameters(to, from) == 1) + return 1; + EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_PARAMETERS); + return 0; + } + + if (from->ameth && from->ameth->param_copy) + return from->ameth->param_copy(to, from); + err: + return 0; +} + +int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) +{ + if (pkey->ameth && pkey->ameth->param_missing) + return pkey->ameth->param_missing(pkey); + return 0; +} + +int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) +{ + if (a->type != b->type) + return -1; + if (a->ameth && a->ameth->param_cmp) + return a->ameth->param_cmp(a, b); + return -2; +} + +int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) +{ + if (a->type != b->type) + return -1; + + if (a->ameth) { + int ret; + /* Compare parameters if the algorithm has them */ + if (a->ameth->param_cmp) { + ret = a->ameth->param_cmp(a, b); + if (ret <= 0) + return ret; + } + + if (a->ameth->pub_cmp) + return a->ameth->pub_cmp(a, b); + } + + return -2; +} + +EVP_PKEY *EVP_PKEY_new(void) +{ + EVP_PKEY *ret; + + ret = (EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY)); + if (ret == NULL) { + EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE); + return (NULL); + } + ret->type = EVP_PKEY_NONE; + ret->save_type = EVP_PKEY_NONE; + ret->references = 1; + ret->ameth = NULL; + ret->engine = NULL; + ret->pkey.ptr = NULL; + ret->attributes = NULL; + ret->save_parameters = 1; + return (ret); +} + +/* + * Setup a public key ASN1 method and ENGINE from a NID or a string. If pkey + * is NULL just return 1 or 0 if the algorithm exists. + */ + +static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len) +{ + const EVP_PKEY_ASN1_METHOD *ameth; + ENGINE *e = NULL; + if (pkey) { + if (pkey->pkey.ptr) + EVP_PKEY_free_it(pkey); + /* + * If key type matches and a method exists then this lookup has + * succeeded once so just indicate success. + */ + if ((type == pkey->save_type) && pkey->ameth) + return 1; +#ifndef OPENSSL_NO_ENGINE + /* If we have an ENGINE release it */ + if (pkey->engine) { + ENGINE_finish(pkey->engine); + pkey->engine = NULL; + } +#endif + } + if (str) + ameth = EVP_PKEY_asn1_find_str(&e, str, len); + else + ameth = EVP_PKEY_asn1_find(&e, type); +#ifndef OPENSSL_NO_ENGINE + if (!pkey && e) + ENGINE_finish(e); +#endif + if (!ameth) { + EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM); + return 0; + } + if (pkey) { + pkey->ameth = ameth; + pkey->engine = e; + + pkey->type = pkey->ameth->pkey_id; + pkey->save_type = type; + } + return 1; +} + +int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) +{ + return pkey_set_type(pkey, type, NULL, -1); +} + +int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len) +{ + return pkey_set_type(pkey, EVP_PKEY_NONE, str, len); +} + +int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) +{ + if (pkey == NULL || !EVP_PKEY_set_type(pkey, type)) + return 0; + pkey->pkey.ptr = key; + return (key != NULL); +} + +void *EVP_PKEY_get0(EVP_PKEY *pkey) +{ + return pkey->pkey.ptr; +} + +#ifndef OPENSSL_NO_RSA +int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) +{ + int ret = EVP_PKEY_assign_RSA(pkey, key); + if (ret) + RSA_up_ref(key); + return ret; +} + +RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) +{ + if (pkey->type != EVP_PKEY_RSA) { + EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY); + return NULL; + } + RSA_up_ref(pkey->pkey.rsa); + return pkey->pkey.rsa; +} +#endif + +#ifndef OPENSSL_NO_DSA +int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) +{ + int ret = EVP_PKEY_assign_DSA(pkey, key); + if (ret) + DSA_up_ref(key); + return ret; +} + +DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) +{ + if (pkey->type != EVP_PKEY_DSA) { + EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY); + return NULL; + } + DSA_up_ref(pkey->pkey.dsa); + return pkey->pkey.dsa; +} +#endif + +#ifndef OPENSSL_NO_EC + +int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) +{ + int ret = EVP_PKEY_assign_EC_KEY(pkey, key); + if (ret) + EC_KEY_up_ref(key); + return ret; +} + +EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey) +{ + if (pkey->type != EVP_PKEY_EC) { + EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY); + return NULL; + } + EC_KEY_up_ref(pkey->pkey.ec); + return pkey->pkey.ec; +} +#endif + +#ifndef OPENSSL_NO_DH + +int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) +{ + int ret = EVP_PKEY_assign_DH(pkey, key); + if (ret) + DH_up_ref(key); + return ret; +} + +DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) +{ + if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) { + EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY); + return NULL; + } + DH_up_ref(pkey->pkey.dh); + return pkey->pkey.dh; +} +#endif + +int EVP_PKEY_type(int type) +{ + int ret; + const EVP_PKEY_ASN1_METHOD *ameth; + ENGINE *e; + ameth = EVP_PKEY_asn1_find(&e, type); + if (ameth) + ret = ameth->pkey_id; + else + ret = NID_undef; +#ifndef OPENSSL_NO_ENGINE + if (e) + ENGINE_finish(e); +#endif + return ret; +} + +int EVP_PKEY_id(const EVP_PKEY *pkey) +{ + return pkey->type; +} + +int EVP_PKEY_base_id(const EVP_PKEY *pkey) +{ + return EVP_PKEY_type(pkey->type); +} + +void EVP_PKEY_free(EVP_PKEY *x) +{ + int i; + + if (x == NULL) + return; + + i = CRYPTO_add(&x->references, -1, CRYPTO_LOCK_EVP_PKEY); +#ifdef REF_PRINT + REF_PRINT("EVP_PKEY", x); +#endif + if (i > 0) + return; +#ifdef REF_CHECK + if (i < 0) { + fprintf(stderr, "EVP_PKEY_free, bad reference count\n"); + abort(); + } +#endif + EVP_PKEY_free_it(x); + if (x->attributes) + sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free); + OPENSSL_free(x); +} + +static void EVP_PKEY_free_it(EVP_PKEY *x) +{ + if (x->ameth && x->ameth->pkey_free) { + x->ameth->pkey_free(x); + x->pkey.ptr = NULL; + } +#ifndef OPENSSL_NO_ENGINE + if (x->engine) { + ENGINE_finish(x->engine); + x->engine = NULL; + } +#endif +} + +static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent, + const char *kstr) +{ + BIO_indent(out, indent, 128); + BIO_printf(out, "%s algorithm \"%s\" unsupported\n", + kstr, OBJ_nid2ln(pkey->type)); + return 1; +} + +int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, + int indent, ASN1_PCTX *pctx) +{ + if (pkey->ameth && pkey->ameth->pub_print) + return pkey->ameth->pub_print(out, pkey, indent, pctx); + + return unsup_alg(out, pkey, indent, "Public Key"); +} + +int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, + int indent, ASN1_PCTX *pctx) +{ + if (pkey->ameth && pkey->ameth->priv_print) + return pkey->ameth->priv_print(out, pkey, indent, pctx); + + return unsup_alg(out, pkey, indent, "Private Key"); +} + +int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, + int indent, ASN1_PCTX *pctx) +{ + if (pkey->ameth && pkey->ameth->param_print) + return pkey->ameth->param_print(out, pkey, indent, pctx); + return unsup_alg(out, pkey, indent, "Parameters"); +} + +int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid) +{ + if (!pkey->ameth || !pkey->ameth->pkey_ctrl) + return -2; + return pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, + 0, pnid); +} |