diff options
Diffstat (limited to 'crypto/evp/evp_pbe.c')
| -rw-r--r-- | crypto/evp/evp_pbe.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/crypto/evp/evp_pbe.c b/crypto/evp/evp_pbe.c new file mode 100644 index 0000000000..e1ebb66357 --- /dev/null +++ b/crypto/evp/evp_pbe.c @@ -0,0 +1,176 @@ +/* p12_pbop.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 "evp.h" +#include "x509.h" +#include "cryptlib.h" + +/* Password based encryption (PBE) functions */ + +static STACK *pbe_algs; + +/* Setup a cipher context from a PBE algorithm */ + +typedef struct { +int pbe_nid; +EVP_CIPHER *cipher; +EVP_MD *md; +EVP_PBE_KEYGEN *keygen; +} EVP_PBE_CTL; + +int EVP_PBE_CipherInit (pbe_obj, pass, passlen, salt, saltlen, iter, ctx, en_de) +ASN1_OBJECT *pbe_obj; +int passlen, saltlen, iter; +unsigned char *pass, *salt; +EVP_CIPHER_CTX *ctx; +int en_de; +{ + + EVP_PBE_CTL *pbetmp, pbelu; + unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; + int i; + pbelu.pbe_nid = OBJ_obj2nid(pbe_obj); + if ((pbelu.pbe_nid != NID_undef) && pbe_algs) + i = sk_find (pbe_algs, (char *)&pbelu); + else i = -1; + + if (i == -1) { + char obj_tmp[80]; + EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_UNKNOWN_PBE_ALGORITHM); + if (!pbe_obj) strcpy (obj_tmp, "NULL"); + else i2t_ASN1_OBJECT(obj_tmp, 80, pbe_obj); + ERR_add_error_data(2, "TYPE=", obj_tmp); + return 0; + } + if (passlen == -1) passlen = strlen(pass); + pbetmp = (EVP_PBE_CTL *)sk_value (pbe_algs, i); + i = (*pbetmp->keygen)(pass, passlen, salt, saltlen, iter, + pbetmp->cipher, pbetmp->md, key, iv); + if (!i) { + EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_KEYGEN_FAILURE); + return 0; + } + EVP_CipherInit (ctx, pbetmp->cipher, key, iv, en_de); + return 1; +} + +/* Setup a PBE algorithm but take most parameters from AlgorithmIdentifier */ + +int EVP_PBE_ALGOR_CipherInit (algor, pass, passlen, ctx, en_de) +X509_ALGOR *algor; +unsigned char *pass; +int passlen; +EVP_CIPHER_CTX *ctx; +int en_de; +{ + PBEPARAM *pbe; + int saltlen, iter; + unsigned char *salt, *pbuf; + + /* Extract useful info from algor */ + pbuf = (char *) algor->parameter->value.sequence->data; + if (!(pbe = d2i_PBEPARAM (NULL, &pbuf, + algor->parameter->value.sequence->length))) { + EVPerr(EVP_F_EVP_PBE_ALGOR_CIPHERINIT,EVP_R_DECODE_ERROR); + return 0; + } + + if (!pbe->iter) iter = 1; + else iter = ASN1_INTEGER_get (pbe->iter); + salt = pbe->salt->data; + saltlen = pbe->salt->length; + + if (!(EVP_PBE_CipherInit (algor->algorithm, pass, passlen, salt, + saltlen, iter, ctx, en_de))) { + EVPerr(EVP_F_EVP_PBE_ALGOR_CIPHERINIT,EVP_R_EVP_PBE_CIPHERINIT_ERROR); + PBEPARAM_free(pbe); + return 0; + } + PBEPARAM_free(pbe); + return 1; +} + + +static int pbe_cmp (pbe1, pbe2) +EVP_PBE_CTL **pbe1, **pbe2; +{ + return ((*pbe1)->pbe_nid - (*pbe2)->pbe_nid); +} + +/* Add a PBE algorithm */ + +int EVP_PBE_alg_add (nid, cipher, md, keygen) +int nid; +EVP_CIPHER *cipher; +EVP_MD *md; +EVP_PBE_KEYGEN *keygen; +{ + EVP_PBE_CTL *pbe_tmp; + if (!pbe_algs) pbe_algs = sk_new (pbe_cmp); + if (!(pbe_tmp = (EVP_PBE_CTL*) Malloc (sizeof(EVP_PBE_CTL)))) { + EVPerr(EVP_F_EVP_PBE_ALG_ADD,ERR_R_MALLOC_FAILURE); + return 0; + } + pbe_tmp->pbe_nid = nid; + pbe_tmp->cipher = cipher; + pbe_tmp->md = md; + pbe_tmp->keygen = keygen; + sk_push (pbe_algs, (char *)pbe_tmp); + return 1; +} |