diff options
author | Dr. Stephen Henson <steve@openssl.org> | 1999-03-28 23:17:34 +0000 |
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committer | Dr. Stephen Henson <steve@openssl.org> | 1999-03-28 23:17:34 +0000 |
commit | 8d8c7266d4de9887fb0190a0770df9dc254a16a3 (patch) | |
tree | 53266f3f48875973f3c7f96abf912c5084155a23 /crypto/pkcs12/p12_decr.c | |
parent | cfcefcbe2aff81c1735c788ca6ae26b7c16cc453 (diff) | |
download | openssl-new-8d8c7266d4de9887fb0190a0770df9dc254a16a3.tar.gz |
Yet more PKCS#12 integration: add lots of files under crypto/pkcs12 and add
them to the build environment.
Diffstat (limited to 'crypto/pkcs12/p12_decr.c')
-rw-r--r-- | crypto/pkcs12/p12_decr.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/crypto/pkcs12/p12_decr.c b/crypto/pkcs12/p12_decr.c new file mode 100644 index 0000000000..c4af4fa84b --- /dev/null +++ b/crypto/pkcs12/p12_decr.c @@ -0,0 +1,206 @@ +/* p12_decr.c */ +/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 <stdlib.h> +#include <objects.h> +#include <pkcs7.h> +#include <err.h> +#include <crypto.h> +#include <sha.h> +#include <stack.h> +#include <evp.h> +#include <string.h> +#include "hmac.h" +#include "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 + * Malloc'ed buffer + */ + +unsigned char * PKCS12_pbe_crypt (algor, pass, passlen, in, inlen, + data, datalen, en_de) +X509_ALGOR *algor; +unsigned 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; + + if(!(out = Malloc (inlen + 8))) { + PKCS12err(PKCS12_F_PKCS12_PBE_CRYPT,ERR_R_MALLOC_FAILURE); + return NULL; + } + + /* Decrypt data */ + if (!EVP_PBE_ALGOR_CipherInit (algor, pass, passlen, &ctx, en_de)) { + PKCS12err(PKCS12_F_PKCS12_PBE_CRYPT,PKCS12_R_PKCS12_ALGOR_CIPHERINIT_ERROR); + return NULL; + } + EVP_CipherUpdate (&ctx, out, &i, in, inlen); + outlen = i; + if(!EVP_CipherFinal (&ctx, out + i, &i)) { + Free (out); + PKCS12err(PKCS12_F_PKCS12_PBE_CRYPT,PKCS12_R_PKCS12_CIPHERFINAL_ERROR); + return NULL; + } + outlen += i; + if (datalen) *datalen = outlen; + if (data) *data = out; + return out; + +} + +/* Decrypt an OCTET STRING and decode ASN1 structure + * if seq & 1 'obj' is a stack of structures to be encoded + * if seq & 2 zero buffer after use + * as a sequence. + */ + +char * PKCS12_decrypt_d2i (algor, d2i, free_func, pass, passlen, oct, seq) +X509_ALGOR *algor; +char * (*d2i)(); +void (*free_func)(); +unsigned char *pass; +int passlen; +ASN1_OCTET_STRING *oct; +int seq; +{ + unsigned char *out, *p, *ret; + int outlen; + if (!PKCS12_pbe_crypt (algor, pass, passlen, oct->data, oct->length, + &out, &outlen, 0)) { + PKCS12err(PKCS12_F_PKCS12_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 + if (seq & 1) ret = (char *) d2i_ASN1_SET(NULL, &p, outlen, d2i, + free_func, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL); + else ret = d2i(NULL, &p, outlen); + if (seq & 2) memset(out, 0, outlen); + if(!ret) PKCS12err(PKCS12_F_PKCS12_DECRYPT_D2I,PKCS12_R_DECODE_ERROR); + Free (out); + return ret; +} + +/* Encode ASN1 structure and encrypt, return OCTET STRING + * if 'seq' is non-zero 'obj' is a stack of structures to be encoded + * as a sequence + */ + +ASN1_OCTET_STRING *PKCS12_i2d_encrypt (algor, i2d, pass, passlen, obj, seq) +X509_ALGOR *algor; +int (*i2d)(); +unsigned char *pass; +int passlen; +char *obj; +int seq; +{ + ASN1_OCTET_STRING *oct; + unsigned char *in, *p; + int inlen; + if (!(oct = ASN1_OCTET_STRING_new ())) { + PKCS12err(PKCS12_F_PKCS12_I2D_ENCRYPT,ERR_R_MALLOC_FAILURE); + return NULL; + } + if (seq) inlen = i2d_ASN1_SET((STACK *)obj, NULL, i2d, V_ASN1_SEQUENCE, + V_ASN1_UNIVERSAL, IS_SEQUENCE); + else inlen = i2d (obj, NULL); + if (!inlen) { + PKCS12err(PKCS12_F_PKCS12_I2D_ENCRYPT,PKCS12_R_ENCODE_ERROR); + return NULL; + } + if (!(in = Malloc (inlen))) { + PKCS12err(PKCS12_F_PKCS12_I2D_ENCRYPT,ERR_R_MALLOC_FAILURE); + return NULL; + } + p = in; + if (seq) i2d_ASN1_SET((STACK *)obj, &p, i2d, V_ASN1_SEQUENCE, + V_ASN1_UNIVERSAL, IS_SEQUENCE); + else i2d (obj, &p); + if (!PKCS12_pbe_crypt (algor, pass, passlen, in, inlen, &oct->data, + &oct->length, 1)) { + PKCS12err(PKCS12_F_PKCS12_I2D_ENCRYPT,PKCS12_R_ENCRYPT_ERROR); + Free(in); + return NULL; + } + Free (in); + return oct; +} |