diff options
Diffstat (limited to 'openssl/crypto/pkcs12/p12_decr.c')
| -rw-r--r-- | openssl/crypto/pkcs12/p12_decr.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/openssl/crypto/pkcs12/p12_decr.c b/openssl/crypto/pkcs12/p12_decr.c new file mode 100644 index 000000000..ba77dbbe3 --- /dev/null +++ b/openssl/crypto/pkcs12/p12_decr.c @@ -0,0 +1,177 @@ +/* p12_decr.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> + +/* Define this to dump decrypted output to files called DERnnn */ +/*#define DEBUG_DECRYPT*/ + + +/* Encrypt/Decrypt a buffer based on password and algor, result in a + * OPENSSL_malloc'ed buffer + */ + +unsigned char * PKCS12_pbe_crypt(X509_ALGOR *algor, const char *pass, + int passlen, unsigned char *in, int inlen, unsigned char **data, + int *datalen, int en_de) +{ + unsigned char *out; + int outlen, i; + EVP_CIPHER_CTX ctx; + + EVP_CIPHER_CTX_init(&ctx); + /* Decrypt data */ + if (!EVP_PBE_CipherInit(algor->algorithm, pass, passlen, + algor->parameter, &ctx, en_de)) { + PKCS12err(PKCS12_F_PKCS12_PBE_CRYPT,PKCS12_R_PKCS12_ALGOR_CIPHERINIT_ERROR); + return NULL; + } + + if(!(out = OPENSSL_malloc(inlen + EVP_CIPHER_CTX_block_size(&ctx)))) { + PKCS12err(PKCS12_F_PKCS12_PBE_CRYPT,ERR_R_MALLOC_FAILURE); + goto err; + } + + EVP_CipherUpdate(&ctx, out, &i, in, inlen); + outlen = i; + if(!EVP_CipherFinal_ex(&ctx, out + i, &i)) { + OPENSSL_free(out); + out = NULL; + PKCS12err(PKCS12_F_PKCS12_PBE_CRYPT,PKCS12_R_PKCS12_CIPHERFINAL_ERROR); + goto err; + } + outlen += i; + if (datalen) *datalen = outlen; + if (data) *data = out; + err: + EVP_CIPHER_CTX_cleanup(&ctx); + return out; + +} + +/* Decrypt an OCTET STRING and decode ASN1 structure + * if zbuf set zero buffer after use. + */ + +void * PKCS12_item_decrypt_d2i(X509_ALGOR *algor, const ASN1_ITEM *it, + const char *pass, int passlen, ASN1_OCTET_STRING *oct, int zbuf) +{ + unsigned char *out; + const unsigned char *p; + void *ret; + int outlen; + + if (!PKCS12_pbe_crypt(algor, pass, passlen, oct->data, oct->length, + &out, &outlen, 0)) { + PKCS12err(PKCS12_F_PKCS12_ITEM_DECRYPT_D2I,PKCS12_R_PKCS12_PBE_CRYPT_ERROR); + return NULL; + } + p = out; +#ifdef DEBUG_DECRYPT + { + FILE *op; + + char fname[30]; + static int fnm = 1; + sprintf(fname, "DER%d", fnm++); + op = fopen(fname, "wb"); + fwrite (p, 1, outlen, op); + fclose(op); + } +#endif + ret = ASN1_item_d2i(NULL, &p, outlen, it); + if (zbuf) OPENSSL_cleanse(out, outlen); + if(!ret) PKCS12err(PKCS12_F_PKCS12_ITEM_DECRYPT_D2I,PKCS12_R_DECODE_ERROR); + OPENSSL_free(out); + return ret; +} + +/* Encode ASN1 structure and encrypt, return OCTET STRING + * if zbuf set zero encoding. + */ + +ASN1_OCTET_STRING *PKCS12_item_i2d_encrypt(X509_ALGOR *algor, const ASN1_ITEM *it, + const char *pass, int passlen, + void *obj, int zbuf) +{ + ASN1_OCTET_STRING *oct; + unsigned char *in = NULL; + int inlen; + if (!(oct = M_ASN1_OCTET_STRING_new ())) { + PKCS12err(PKCS12_F_PKCS12_ITEM_I2D_ENCRYPT,ERR_R_MALLOC_FAILURE); + return NULL; + } + inlen = ASN1_item_i2d(obj, &in, it); + if (!in) { + PKCS12err(PKCS12_F_PKCS12_ITEM_I2D_ENCRYPT,PKCS12_R_ENCODE_ERROR); + return NULL; + } + if (!PKCS12_pbe_crypt(algor, pass, passlen, in, inlen, &oct->data, + &oct->length, 1)) { + PKCS12err(PKCS12_F_PKCS12_ITEM_I2D_ENCRYPT,PKCS12_R_ENCRYPT_ERROR); + OPENSSL_free(in); + return NULL; + } + if (zbuf) OPENSSL_cleanse(in, inlen); + OPENSSL_free(in); + return oct; +} + +IMPLEMENT_PKCS12_STACK_OF(PKCS7) |