diff options
Diffstat (limited to 'openssl/apps/enc.c')
-rw-r--r-- | openssl/apps/enc.c | 713 |
1 files changed, 713 insertions, 0 deletions
diff --git a/openssl/apps/enc.c b/openssl/apps/enc.c new file mode 100644 index 0000000..8c8f1ef --- /dev/null +++ b/openssl/apps/enc.c @@ -0,0 +1,713 @@ +/* apps/enc.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 <stdlib.h> +#include <string.h> +#include "apps.h" +#include <openssl/bio.h> +#include <openssl/err.h> +#include <openssl/evp.h> +#include <openssl/objects.h> +#include <openssl/x509.h> +#include <openssl/rand.h> +#include <openssl/pem.h> +#ifndef OPENSSL_NO_COMP +# include <openssl/comp.h> +#endif +#include <ctype.h> + +int set_hex(char *in, unsigned char *out, int size); +#undef SIZE +#undef BSIZE +#undef PROG + +#define SIZE (512) +#define BSIZE (8*1024) +#define PROG enc_main + +static void show_ciphers(const OBJ_NAME *name, void *bio_) +{ + BIO *bio = bio_; + static int n; + + if (!islower((unsigned char)*name->name)) + return; + + BIO_printf(bio, "-%-25s", name->name); + if (++n == 3) { + BIO_printf(bio, "\n"); + n = 0; + } else + BIO_printf(bio, " "); +} + +int MAIN(int, char **); + +int MAIN(int argc, char **argv) +{ + static const char magic[] = "Salted__"; + char mbuf[sizeof magic - 1]; + char *strbuf = NULL; + unsigned char *buff = NULL, *bufsize = NULL; + int bsize = BSIZE, verbose = 0; + int ret = 1, inl; + int nopad = 0; + unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; + unsigned char salt[PKCS5_SALT_LEN]; + char *str = NULL, *passarg = NULL, *pass = NULL; + char *hkey = NULL, *hiv = NULL, *hsalt = NULL; + char *md = NULL; + int enc = 1, printkey = 0, i, base64 = 0; +#ifdef ZLIB + int do_zlib = 0; + BIO *bzl = NULL; +#endif + int debug = 0, olb64 = 0, nosalt = 0; + const EVP_CIPHER *cipher = NULL, *c; + EVP_CIPHER_CTX *ctx = NULL; + char *inf = NULL, *outf = NULL; + BIO *in = NULL, *out = NULL, *b64 = NULL, *benc = NULL, *rbio = + NULL, *wbio = NULL; +#define PROG_NAME_SIZE 39 + char pname[PROG_NAME_SIZE + 1]; + char *engine = NULL; + ENGINE *e = NULL; + const EVP_MD *dgst = NULL; + int non_fips_allow = 0; + + apps_startup(); + + if (bio_err == NULL) + if ((bio_err = BIO_new(BIO_s_file())) != NULL) + BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); + + if (!load_config(bio_err, NULL)) + goto end; + + /* first check the program name */ + program_name(argv[0], pname, sizeof pname); + if (strcmp(pname, "base64") == 0) + base64 = 1; +#ifdef ZLIB + if (strcmp(pname, "zlib") == 0) + do_zlib = 1; +#endif + + cipher = EVP_get_cipherbyname(pname); +#ifdef ZLIB + if (!do_zlib && !base64 && (cipher == NULL) + && (strcmp(pname, "enc") != 0)) +#else + if (!base64 && (cipher == NULL) && (strcmp(pname, "enc") != 0)) +#endif + { + BIO_printf(bio_err, "%s is an unknown cipher\n", pname); + goto bad; + } + + argc--; + argv++; + while (argc >= 1) { + if (strcmp(*argv, "-e") == 0) + enc = 1; + else if (strcmp(*argv, "-in") == 0) { + if (--argc < 1) + goto bad; + inf = *(++argv); + } else if (strcmp(*argv, "-out") == 0) { + if (--argc < 1) + goto bad; + outf = *(++argv); + } else if (strcmp(*argv, "-pass") == 0) { + if (--argc < 1) + goto bad; + passarg = *(++argv); + } +#ifndef OPENSSL_NO_ENGINE + else if (strcmp(*argv, "-engine") == 0) { + if (--argc < 1) + goto bad; + engine = *(++argv); + } +#endif + else if (strcmp(*argv, "-d") == 0) + enc = 0; + else if (strcmp(*argv, "-p") == 0) + printkey = 1; + else if (strcmp(*argv, "-v") == 0) + verbose = 1; + else if (strcmp(*argv, "-nopad") == 0) + nopad = 1; + else if (strcmp(*argv, "-salt") == 0) + nosalt = 0; + else if (strcmp(*argv, "-nosalt") == 0) + nosalt = 1; + else if (strcmp(*argv, "-debug") == 0) + debug = 1; + else if (strcmp(*argv, "-P") == 0) + printkey = 2; + else if (strcmp(*argv, "-A") == 0) + olb64 = 1; + else if (strcmp(*argv, "-a") == 0) + base64 = 1; + else if (strcmp(*argv, "-base64") == 0) + base64 = 1; +#ifdef ZLIB + else if (strcmp(*argv, "-z") == 0) + do_zlib = 1; +#endif + else if (strcmp(*argv, "-bufsize") == 0) { + if (--argc < 1) + goto bad; + bufsize = (unsigned char *)*(++argv); + } else if (strcmp(*argv, "-k") == 0) { + if (--argc < 1) + goto bad; + str = *(++argv); + } else if (strcmp(*argv, "-kfile") == 0) { + static char buf[128]; + FILE *infile; + char *file; + + if (--argc < 1) + goto bad; + file = *(++argv); + infile = fopen(file, "r"); + if (infile == NULL) { + BIO_printf(bio_err, "unable to read key from '%s'\n", file); + goto bad; + } + buf[0] = '\0'; + if (!fgets(buf, sizeof buf, infile)) { + BIO_printf(bio_err, "unable to read key from '%s'\n", file); + goto bad; + } + fclose(infile); + i = strlen(buf); + if ((i > 0) && ((buf[i - 1] == '\n') || (buf[i - 1] == '\r'))) + buf[--i] = '\0'; + if ((i > 0) && ((buf[i - 1] == '\n') || (buf[i - 1] == '\r'))) + buf[--i] = '\0'; + if (i < 1) { + BIO_printf(bio_err, "zero length password\n"); + goto bad; + } + str = buf; + } else if (strcmp(*argv, "-K") == 0) { + if (--argc < 1) + goto bad; + hkey = *(++argv); + } else if (strcmp(*argv, "-S") == 0) { + if (--argc < 1) + goto bad; + hsalt = *(++argv); + } else if (strcmp(*argv, "-iv") == 0) { + if (--argc < 1) + goto bad; + hiv = *(++argv); + } else if (strcmp(*argv, "-md") == 0) { + if (--argc < 1) + goto bad; + md = *(++argv); + } else if (strcmp(*argv, "-non-fips-allow") == 0) + non_fips_allow = 1; + else if ((argv[0][0] == '-') && + ((c = EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) { + cipher = c; + } else if (strcmp(*argv, "-none") == 0) + cipher = NULL; + else { + BIO_printf(bio_err, "unknown option '%s'\n", *argv); + bad: + BIO_printf(bio_err, "options are\n"); + BIO_printf(bio_err, "%-14s input file\n", "-in <file>"); + BIO_printf(bio_err, "%-14s output file\n", "-out <file>"); + BIO_printf(bio_err, "%-14s pass phrase source\n", "-pass <arg>"); + BIO_printf(bio_err, "%-14s encrypt\n", "-e"); + BIO_printf(bio_err, "%-14s decrypt\n", "-d"); + BIO_printf(bio_err, + "%-14s base64 encode/decode, depending on encryption flag\n", + "-a/-base64"); + BIO_printf(bio_err, "%-14s passphrase is the next argument\n", + "-k"); + BIO_printf(bio_err, + "%-14s passphrase is the first line of the file argument\n", + "-kfile"); + BIO_printf(bio_err, + "%-14s the next argument is the md to use to create a key\n", + "-md"); + BIO_printf(bio_err, + "%-14s from a passphrase. One of md2, md5, sha or sha1\n", + ""); + BIO_printf(bio_err, "%-14s salt in hex is the next argument\n", + "-S"); + BIO_printf(bio_err, "%-14s key/iv in hex is the next argument\n", + "-K/-iv"); + BIO_printf(bio_err, "%-14s print the iv/key (then exit if -P)\n", + "-[pP]"); + BIO_printf(bio_err, "%-14s buffer size\n", "-bufsize <n>"); + BIO_printf(bio_err, "%-14s disable standard block padding\n", + "-nopad"); +#ifndef OPENSSL_NO_ENGINE + BIO_printf(bio_err, + "%-14s use engine e, possibly a hardware device.\n", + "-engine e"); +#endif + + BIO_printf(bio_err, "Cipher Types\n"); + OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, + show_ciphers, bio_err); + BIO_printf(bio_err, "\n"); + + goto end; + } + argc--; + argv++; + } + + e = setup_engine(bio_err, engine, 0); + + if (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) { + BIO_printf(bio_err, + "AEAD ciphers not supported by the enc utility\n"); + goto end; + } + + if (cipher && (EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE)) { + BIO_printf(bio_err, + "Ciphers in XTS mode are not supported by the enc utility\n"); + goto end; + } + + if (md && (dgst = EVP_get_digestbyname(md)) == NULL) { + BIO_printf(bio_err, "%s is an unsupported message digest type\n", md); + goto end; + } + + if (dgst == NULL) { + dgst = EVP_md5(); + } + + if (bufsize != NULL) { + unsigned long n; + + for (n = 0; *bufsize; bufsize++) { + i = *bufsize; + if ((i <= '9') && (i >= '0')) + n = n * 10 + i - '0'; + else if (i == 'k') { + n *= 1024; + bufsize++; + break; + } + } + if (*bufsize != '\0') { + BIO_printf(bio_err, "invalid 'bufsize' specified.\n"); + goto end; + } + + /* It must be large enough for a base64 encoded line */ + if (base64 && n < 80) + n = 80; + + bsize = (int)n; + if (verbose) + BIO_printf(bio_err, "bufsize=%d\n", bsize); + } + + strbuf = OPENSSL_malloc(SIZE); + buff = (unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize)); + if ((buff == NULL) || (strbuf == NULL)) { + BIO_printf(bio_err, "OPENSSL_malloc failure %ld\n", + (long)EVP_ENCODE_LENGTH(bsize)); + goto end; + } + + in = BIO_new(BIO_s_file()); + out = BIO_new(BIO_s_file()); + if ((in == NULL) || (out == NULL)) { + ERR_print_errors(bio_err); + goto end; + } + if (debug) { + BIO_set_callback(in, BIO_debug_callback); + BIO_set_callback(out, BIO_debug_callback); + BIO_set_callback_arg(in, (char *)bio_err); + BIO_set_callback_arg(out, (char *)bio_err); + } + + if (inf == NULL) { +#ifndef OPENSSL_NO_SETVBUF_IONBF + if (bufsize != NULL) + setvbuf(stdin, (char *)NULL, _IONBF, 0); +#endif /* ndef OPENSSL_NO_SETVBUF_IONBF */ + BIO_set_fp(in, stdin, BIO_NOCLOSE); + } else { + if (BIO_read_filename(in, inf) <= 0) { + perror(inf); + goto end; + } + } + + if (!str && passarg) { + if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) { + BIO_printf(bio_err, "Error getting password\n"); + goto end; + } + str = pass; + } + + if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) { + for (;;) { + char buf[200]; + + BIO_snprintf(buf, sizeof buf, "enter %s %s password:", + OBJ_nid2ln(EVP_CIPHER_nid(cipher)), + (enc) ? "encryption" : "decryption"); + strbuf[0] = '\0'; + i = EVP_read_pw_string((char *)strbuf, SIZE, buf, enc); + if (i == 0) { + if (strbuf[0] == '\0') { + ret = 1; + goto end; + } + str = strbuf; + break; + } + if (i < 0) { + BIO_printf(bio_err, "bad password read\n"); + goto end; + } + } + } + + if (outf == NULL) { + BIO_set_fp(out, stdout, BIO_NOCLOSE); +#ifndef OPENSSL_NO_SETVBUF_IONBF + if (bufsize != NULL) + setvbuf(stdout, (char *)NULL, _IONBF, 0); +#endif /* ndef OPENSSL_NO_SETVBUF_IONBF */ +#ifdef OPENSSL_SYS_VMS + { + BIO *tmpbio = BIO_new(BIO_f_linebuffer()); + out = BIO_push(tmpbio, out); + } +#endif + } else { + if (BIO_write_filename(out, outf) <= 0) { + perror(outf); + goto end; + } + } + + rbio = in; + wbio = out; + +#ifdef ZLIB + + if (do_zlib) { + if ((bzl = BIO_new(BIO_f_zlib())) == NULL) + goto end; + if (enc) + wbio = BIO_push(bzl, wbio); + else + rbio = BIO_push(bzl, rbio); + } +#endif + + if (base64) { + if ((b64 = BIO_new(BIO_f_base64())) == NULL) + goto end; + if (debug) { + BIO_set_callback(b64, BIO_debug_callback); + BIO_set_callback_arg(b64, (char *)bio_err); + } + if (olb64) + BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL); + if (enc) + wbio = BIO_push(b64, wbio); + else + rbio = BIO_push(b64, rbio); + } + + if (cipher != NULL) { + /* + * Note that str is NULL if a key was passed on the command line, so + * we get no salt in that case. Is this a bug? + */ + if (str != NULL) { + /* + * Salt handling: if encrypting generate a salt and write to + * output BIO. If decrypting read salt from input BIO. + */ + unsigned char *sptr; + if (nosalt) + sptr = NULL; + else { + if (enc) { + if (hsalt) { + if (!set_hex(hsalt, salt, sizeof salt)) { + BIO_printf(bio_err, "invalid hex salt value\n"); + goto end; + } + } else if (RAND_bytes(salt, sizeof salt) <= 0) + goto end; + /* + * If -P option then don't bother writing + */ + if ((printkey != 2) + && (BIO_write(wbio, magic, + sizeof magic - 1) != sizeof magic - 1 + || BIO_write(wbio, + (char *)salt, + sizeof salt) != sizeof salt)) { + BIO_printf(bio_err, "error writing output file\n"); + goto end; + } + } else if (BIO_read(rbio, mbuf, sizeof mbuf) != sizeof mbuf + || BIO_read(rbio, + (unsigned char *)salt, + sizeof salt) != sizeof salt) { + BIO_printf(bio_err, "error reading input file\n"); + goto end; + } else if (memcmp(mbuf, magic, sizeof magic - 1)) { + BIO_printf(bio_err, "bad magic number\n"); + goto end; + } + + sptr = salt; + } + + EVP_BytesToKey(cipher, dgst, sptr, + (unsigned char *)str, strlen(str), 1, key, iv); + /* + * zero the complete buffer or the string passed from the command + * line bug picked up by Larry J. Hughes Jr. <hughes@indiana.edu> + */ + if (str == strbuf) + OPENSSL_cleanse(str, SIZE); + else + OPENSSL_cleanse(str, strlen(str)); + } + if (hiv != NULL) { + int siz = EVP_CIPHER_iv_length(cipher); + if (siz == 0) { + BIO_printf(bio_err, "warning: iv not use by this cipher\n"); + } else if (!set_hex(hiv, iv, sizeof iv)) { + BIO_printf(bio_err, "invalid hex iv value\n"); + goto end; + } + } + if ((hiv == NULL) && (str == NULL) + && EVP_CIPHER_iv_length(cipher) != 0) { + /* + * No IV was explicitly set and no IV was generated during + * EVP_BytesToKey. Hence the IV is undefined, making correct + * decryption impossible. + */ + BIO_printf(bio_err, "iv undefined\n"); + goto end; + } + if ((hkey != NULL) && !set_hex(hkey, key, EVP_CIPHER_key_length(cipher))) { + BIO_printf(bio_err, "invalid hex key value\n"); + goto end; + } + + if ((benc = BIO_new(BIO_f_cipher())) == NULL) + goto end; + + /* + * Since we may be changing parameters work on the encryption context + * rather than calling BIO_set_cipher(). + */ + + BIO_get_cipher_ctx(benc, &ctx); + + if (non_fips_allow) + EVP_CIPHER_CTX_set_flags(ctx, EVP_CIPH_FLAG_NON_FIPS_ALLOW); + + if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) { + BIO_printf(bio_err, "Error setting cipher %s\n", + EVP_CIPHER_name(cipher)); + ERR_print_errors(bio_err); + goto end; + } + + if (nopad) + EVP_CIPHER_CTX_set_padding(ctx, 0); + + if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) { + BIO_printf(bio_err, "Error setting cipher %s\n", + EVP_CIPHER_name(cipher)); + ERR_print_errors(bio_err); + goto end; + } + + if (debug) { + BIO_set_callback(benc, BIO_debug_callback); + BIO_set_callback_arg(benc, (char *)bio_err); + } + + if (printkey) { + if (!nosalt) { + printf("salt="); + for (i = 0; i < (int)sizeof(salt); i++) + printf("%02X", salt[i]); + printf("\n"); + } + if (cipher->key_len > 0) { + printf("key="); + for (i = 0; i < cipher->key_len; i++) + printf("%02X", key[i]); + printf("\n"); + } + if (cipher->iv_len > 0) { + printf("iv ="); + for (i = 0; i < cipher->iv_len; i++) + printf("%02X", iv[i]); + printf("\n"); + } + if (printkey == 2) { + ret = 0; + goto end; + } + } + } + + /* Only encrypt/decrypt as we write the file */ + if (benc != NULL) + wbio = BIO_push(benc, wbio); + + for (;;) { + inl = BIO_read(rbio, (char *)buff, bsize); + if (inl <= 0) + break; + if (BIO_write(wbio, (char *)buff, inl) != inl) { + BIO_printf(bio_err, "error writing output file\n"); + goto end; + } + } + if (!BIO_flush(wbio)) { + BIO_printf(bio_err, "bad decrypt\n"); + goto end; + } + + ret = 0; + if (verbose) { + BIO_printf(bio_err, "bytes read :%8ld\n", BIO_number_read(in)); + BIO_printf(bio_err, "bytes written:%8ld\n", BIO_number_written(out)); + } + end: + ERR_print_errors(bio_err); + if (strbuf != NULL) + OPENSSL_free(strbuf); + if (buff != NULL) + OPENSSL_free(buff); + if (in != NULL) + BIO_free(in); + if (out != NULL) + BIO_free_all(out); + if (benc != NULL) + BIO_free(benc); + if (b64 != NULL) + BIO_free(b64); +#ifdef ZLIB + if (bzl != NULL) + BIO_free(bzl); +#endif + release_engine(e); + if (pass) + OPENSSL_free(pass); + apps_shutdown(); + OPENSSL_EXIT(ret); +} + +int set_hex(char *in, unsigned char *out, int size) +{ + int i, n; + unsigned char j; + + n = strlen(in); + if (n > (size * 2)) { + BIO_printf(bio_err, "hex string is too long\n"); + return (0); + } + memset(out, 0, size); + for (i = 0; i < n; i++) { + j = (unsigned char)*in; + *(in++) = '\0'; + if (j == 0) + break; + if ((j >= '0') && (j <= '9')) + j -= '0'; + else if ((j >= 'A') && (j <= 'F')) + j = j - 'A' + 10; + else if ((j >= 'a') && (j <= 'f')) + j = j - 'a' + 10; + else { + BIO_printf(bio_err, "non-hex digit\n"); + return (0); + } + if (i & 1) + out[i / 2] |= j; + else + out[i / 2] = (j << 4); + } + return (1); +} |