diff options
Diffstat (limited to 'openssl/crypto/pkcs12/p12_key.c')
| -rw-r--r-- | openssl/crypto/pkcs12/p12_key.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/openssl/crypto/pkcs12/p12_key.c b/openssl/crypto/pkcs12/p12_key.c new file mode 100644 index 000000000..9e57eee4a --- /dev/null +++ b/openssl/crypto/pkcs12/p12_key.c @@ -0,0 +1,206 @@ +/* p12_key.c */ +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL + * project 1999. + */ +/* ==================================================================== + * Copyright (c) 1999 The OpenSSL Project. All rights reserved. + * + * 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 above 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 acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED 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 OpenSSL PROJECT OR + * ITS 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. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include <stdio.h> +#include "cryptlib.h" +#include <openssl/pkcs12.h> +#include <openssl/bn.h> + +/* Uncomment out this line to get debugging info about key generation */ +/*#define DEBUG_KEYGEN*/ +#ifdef DEBUG_KEYGEN +#include <openssl/bio.h> +extern BIO *bio_err; +void h__dump (unsigned char *p, int len); +#endif + +/* PKCS12 compatible key/IV generation */ +#ifndef min +#define min(a,b) ((a) < (b) ? (a) : (b)) +#endif + +int PKCS12_key_gen_asc(const char *pass, int passlen, unsigned char *salt, + int saltlen, int id, int iter, int n, unsigned char *out, + const EVP_MD *md_type) +{ + int ret; + unsigned char *unipass; + int uniplen; + if(!pass) { + unipass = NULL; + uniplen = 0; + } else if (!asc2uni(pass, passlen, &unipass, &uniplen)) { + PKCS12err(PKCS12_F_PKCS12_KEY_GEN_ASC,ERR_R_MALLOC_FAILURE); + return 0; + } + ret = PKCS12_key_gen_uni(unipass, uniplen, salt, saltlen, + id, iter, n, out, md_type); + if(unipass) { + OPENSSL_cleanse(unipass, uniplen); /* Clear password from memory */ + OPENSSL_free(unipass); + } + return ret; +} + +int PKCS12_key_gen_uni(unsigned char *pass, int passlen, unsigned char *salt, + int saltlen, int id, int iter, int n, unsigned char *out, + const EVP_MD *md_type) +{ + unsigned char *B, *D, *I, *p, *Ai; + int Slen, Plen, Ilen, Ijlen; + int i, j, u, v; + BIGNUM *Ij, *Bpl1; /* These hold Ij and B + 1 */ + EVP_MD_CTX ctx; +#ifdef DEBUG_KEYGEN + unsigned char *tmpout = out; + int tmpn = n; +#endif + +#if 0 + if (!pass) { + PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI,ERR_R_PASSED_NULL_PARAMETER); + return 0; + } +#endif + + EVP_MD_CTX_init(&ctx); +#ifdef DEBUG_KEYGEN + fprintf(stderr, "KEYGEN DEBUG\n"); + fprintf(stderr, "ID %d, ITER %d\n", id, iter); + fprintf(stderr, "Password (length %d):\n", passlen); + h__dump(pass, passlen); + fprintf(stderr, "Salt (length %d):\n", saltlen); + h__dump(salt, saltlen); +#endif + v = EVP_MD_block_size (md_type); + u = EVP_MD_size (md_type); + D = OPENSSL_malloc (v); + Ai = OPENSSL_malloc (u); + B = OPENSSL_malloc (v + 1); + Slen = v * ((saltlen+v-1)/v); + if(passlen) Plen = v * ((passlen+v-1)/v); + else Plen = 0; + Ilen = Slen + Plen; + I = OPENSSL_malloc (Ilen); + Ij = BN_new(); + Bpl1 = BN_new(); + if (!D || !Ai || !B || !I || !Ij || !Bpl1) { + PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI,ERR_R_MALLOC_FAILURE); + return 0; + } + for (i = 0; i < v; i++) D[i] = id; + p = I; + for (i = 0; i < Slen; i++) *p++ = salt[i % saltlen]; + for (i = 0; i < Plen; i++) *p++ = pass[i % passlen]; + for (;;) { + EVP_DigestInit_ex(&ctx, md_type, NULL); + EVP_DigestUpdate(&ctx, D, v); + EVP_DigestUpdate(&ctx, I, Ilen); + EVP_DigestFinal_ex(&ctx, Ai, NULL); + for (j = 1; j < iter; j++) { + EVP_DigestInit_ex(&ctx, md_type, NULL); + EVP_DigestUpdate(&ctx, Ai, u); + EVP_DigestFinal_ex(&ctx, Ai, NULL); + } + memcpy (out, Ai, min (n, u)); + if (u >= n) { + OPENSSL_free (Ai); + OPENSSL_free (B); + OPENSSL_free (D); + OPENSSL_free (I); + BN_free (Ij); + BN_free (Bpl1); + EVP_MD_CTX_cleanup(&ctx); +#ifdef DEBUG_KEYGEN + fprintf(stderr, "Output KEY (length %d)\n", tmpn); + h__dump(tmpout, tmpn); +#endif + return 1; + } + n -= u; + out += u; + for (j = 0; j < v; j++) B[j] = Ai[j % u]; + /* Work out B + 1 first then can use B as tmp space */ + BN_bin2bn (B, v, Bpl1); + BN_add_word (Bpl1, 1); + for (j = 0; j < Ilen ; j+=v) { + BN_bin2bn (I + j, v, Ij); + BN_add (Ij, Ij, Bpl1); + BN_bn2bin (Ij, B); + Ijlen = BN_num_bytes (Ij); + /* If more than 2^(v*8) - 1 cut off MSB */ + if (Ijlen > v) { + BN_bn2bin (Ij, B); + memcpy (I + j, B + 1, v); +#ifndef PKCS12_BROKEN_KEYGEN + /* If less than v bytes pad with zeroes */ + } else if (Ijlen < v) { + memset(I + j, 0, v - Ijlen); + BN_bn2bin(Ij, I + j + v - Ijlen); +#endif + } else BN_bn2bin (Ij, I + j); + } + } +} +#ifdef DEBUG_KEYGEN +void h__dump (unsigned char *p, int len) +{ + for (; len --; p++) fprintf(stderr, "%02X", *p); + fprintf(stderr, "\n"); +} +#endif |