diff options
Diffstat (limited to 'openssl/crypto/evp/evp_pbe.c')
| -rw-r--r-- | openssl/crypto/evp/evp_pbe.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/openssl/crypto/evp/evp_pbe.c b/openssl/crypto/evp/evp_pbe.c new file mode 100644 index 000000000..5e830be65 --- /dev/null +++ b/openssl/crypto/evp/evp_pbe.c @@ -0,0 +1,137 @@ +/* evp_pbe.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/evp.h> +#include <openssl/x509.h> + +/* Password based encryption (PBE) functions */ + +static STACK *pbe_algs; + +/* Setup a cipher context from a PBE algorithm */ + +typedef struct { +int pbe_nid; +const EVP_CIPHER *cipher; +const EVP_MD *md; +EVP_PBE_KEYGEN *keygen; +} EVP_PBE_CTL; + +int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen, + ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de) +{ + + EVP_PBE_CTL *pbetmp, pbelu; + int i; + pbelu.pbe_nid = OBJ_obj2nid(pbe_obj); + if (pbelu.pbe_nid != NID_undef) 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) BUF_strlcpy (obj_tmp, "NULL", sizeof obj_tmp); + else i2t_ASN1_OBJECT(obj_tmp, sizeof obj_tmp, pbe_obj); + ERR_add_error_data(2, "TYPE=", obj_tmp); + return 0; + } + if(!pass) passlen = 0; + else if (passlen == -1) passlen = strlen(pass); + pbetmp = (EVP_PBE_CTL *)sk_value (pbe_algs, i); + i = (*pbetmp->keygen)(ctx, pass, passlen, param, pbetmp->cipher, + pbetmp->md, en_de); + if (!i) { + EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_KEYGEN_FAILURE); + return 0; + } + return 1; +} + +static int pbe_cmp(const char * const *a, const char * const *b) +{ + const EVP_PBE_CTL * const *pbe1 = (const EVP_PBE_CTL * const *) a, + * const *pbe2 = (const EVP_PBE_CTL * const *)b; + return ((*pbe1)->pbe_nid - (*pbe2)->pbe_nid); +} + +/* Add a PBE algorithm */ + +int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const 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*) OPENSSL_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; +} + +void EVP_PBE_cleanup(void) +{ + sk_pop_free(pbe_algs, OPENSSL_freeFunc); + pbe_algs = NULL; +} |