X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fasn1%2Fp5_pbev2.c;h=73ba4a3d67aaa4501e77dd14d2efc5c481c2e6b1;hp=4ea683036b17f6d264a7e8f84afe743b02a23e34;hb=0f113f3ee4d629ef9a4a30911b22b224772085e5;hpb=22b52164aaed31d6e93dbd2d397ace041360e6aa diff --git a/crypto/asn1/p5_pbev2.c b/crypto/asn1/p5_pbev2.c index 4ea683036b..73ba4a3d67 100644 --- a/crypto/asn1/p5_pbev2.c +++ b/crypto/asn1/p5_pbev2.c @@ -1,6 +1,7 @@ /* p5_pbev2.c */ -/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL - * project 1999-2004. +/* + * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project + * 1999-2004. */ /* ==================================================================== * Copyright (c) 1999 The OpenSSL Project. All rights reserved. @@ -10,7 +11,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -65,216 +66,215 @@ /* PKCS#5 v2.0 password based encryption structures */ ASN1_SEQUENCE(PBE2PARAM) = { - ASN1_SIMPLE(PBE2PARAM, keyfunc, X509_ALGOR), - ASN1_SIMPLE(PBE2PARAM, encryption, X509_ALGOR) + ASN1_SIMPLE(PBE2PARAM, keyfunc, X509_ALGOR), + ASN1_SIMPLE(PBE2PARAM, encryption, X509_ALGOR) } ASN1_SEQUENCE_END(PBE2PARAM) IMPLEMENT_ASN1_FUNCTIONS(PBE2PARAM) ASN1_SEQUENCE(PBKDF2PARAM) = { - ASN1_SIMPLE(PBKDF2PARAM, salt, ASN1_ANY), - ASN1_SIMPLE(PBKDF2PARAM, iter, ASN1_INTEGER), - ASN1_OPT(PBKDF2PARAM, keylength, ASN1_INTEGER), - ASN1_OPT(PBKDF2PARAM, prf, X509_ALGOR) + ASN1_SIMPLE(PBKDF2PARAM, salt, ASN1_ANY), + ASN1_SIMPLE(PBKDF2PARAM, iter, ASN1_INTEGER), + ASN1_OPT(PBKDF2PARAM, keylength, ASN1_INTEGER), + ASN1_OPT(PBKDF2PARAM, prf, X509_ALGOR) } ASN1_SEQUENCE_END(PBKDF2PARAM) IMPLEMENT_ASN1_FUNCTIONS(PBKDF2PARAM) -/* Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm: - * yes I know this is horrible! - * - * Extended version to allow application supplied PRF NID and IV. +/* + * Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm: yes I know + * this is horrible! Extended version to allow application supplied PRF NID + * and IV. */ X509_ALGOR *PKCS5_pbe2_set_iv(const EVP_CIPHER *cipher, int iter, - unsigned char *salt, int saltlen, - unsigned char *aiv, int prf_nid) + unsigned char *salt, int saltlen, + unsigned char *aiv, int prf_nid) { - X509_ALGOR *scheme = NULL, *kalg = NULL, *ret = NULL; - int alg_nid, keylen; - EVP_CIPHER_CTX ctx; - unsigned char iv[EVP_MAX_IV_LENGTH]; - PBE2PARAM *pbe2 = NULL; - ASN1_OBJECT *obj; - - alg_nid = EVP_CIPHER_type(cipher); - if(alg_nid == NID_undef) { - ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, - ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER); - goto err; - } - obj = OBJ_nid2obj(alg_nid); - - if(!(pbe2 = PBE2PARAM_new())) goto merr; - - /* Setup the AlgorithmIdentifier for the encryption scheme */ - scheme = pbe2->encryption; + X509_ALGOR *scheme = NULL, *kalg = NULL, *ret = NULL; + int alg_nid, keylen; + EVP_CIPHER_CTX ctx; + unsigned char iv[EVP_MAX_IV_LENGTH]; + PBE2PARAM *pbe2 = NULL; + ASN1_OBJECT *obj; + + alg_nid = EVP_CIPHER_type(cipher); + if (alg_nid == NID_undef) { + ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, + ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER); + goto err; + } + obj = OBJ_nid2obj(alg_nid); + + if (!(pbe2 = PBE2PARAM_new())) + goto merr; + + /* Setup the AlgorithmIdentifier for the encryption scheme */ + scheme = pbe2->encryption; + + scheme->algorithm = obj; + if (!(scheme->parameter = ASN1_TYPE_new())) + goto merr; + + /* Create random IV */ + if (EVP_CIPHER_iv_length(cipher)) { + if (aiv) + memcpy(iv, aiv, EVP_CIPHER_iv_length(cipher)); + else if (RAND_pseudo_bytes(iv, EVP_CIPHER_iv_length(cipher)) < 0) + goto err; + } + + EVP_CIPHER_CTX_init(&ctx); + + /* Dummy cipherinit to just setup the IV, and PRF */ + if (!EVP_CipherInit_ex(&ctx, cipher, NULL, NULL, iv, 0)) + goto err; + if (EVP_CIPHER_param_to_asn1(&ctx, scheme->parameter) < 0) { + ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, ASN1_R_ERROR_SETTING_CIPHER_PARAMS); + EVP_CIPHER_CTX_cleanup(&ctx); + goto err; + } + /* + * If prf NID unspecified see if cipher has a preference. An error is OK + * here: just means use default PRF. + */ + if ((prf_nid == -1) && + EVP_CIPHER_CTX_ctrl(&ctx, EVP_CTRL_PBE_PRF_NID, 0, &prf_nid) <= 0) { + ERR_clear_error(); + prf_nid = NID_hmacWithSHA1; + } + EVP_CIPHER_CTX_cleanup(&ctx); + + /* If its RC2 then we'd better setup the key length */ + + if (alg_nid == NID_rc2_cbc) + keylen = EVP_CIPHER_key_length(cipher); + else + keylen = -1; + + /* Setup keyfunc */ + + X509_ALGOR_free(pbe2->keyfunc); + + pbe2->keyfunc = PKCS5_pbkdf2_set(iter, salt, saltlen, prf_nid, keylen); + + if (!pbe2->keyfunc) + goto merr; + + /* Now set up top level AlgorithmIdentifier */ + + if (!(ret = X509_ALGOR_new())) + goto merr; + if (!(ret->parameter = ASN1_TYPE_new())) + goto merr; + + ret->algorithm = OBJ_nid2obj(NID_pbes2); + + /* Encode PBE2PARAM into parameter */ + + if (!ASN1_item_pack(pbe2, ASN1_ITEM_rptr(PBE2PARAM), + &ret->parameter->value.sequence)) + goto merr; + ret->parameter->type = V_ASN1_SEQUENCE; + + PBE2PARAM_free(pbe2); + pbe2 = NULL; + + return ret; + + merr: + ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, ERR_R_MALLOC_FAILURE); + + err: + PBE2PARAM_free(pbe2); + /* Note 'scheme' is freed as part of pbe2 */ + X509_ALGOR_free(kalg); + X509_ALGOR_free(ret); + + return NULL; - scheme->algorithm = obj; - if(!(scheme->parameter = ASN1_TYPE_new())) goto merr; +} - /* Create random IV */ - if (EVP_CIPHER_iv_length(cipher)) - { - if (aiv) - memcpy(iv, aiv, EVP_CIPHER_iv_length(cipher)); - else if (RAND_pseudo_bytes(iv, EVP_CIPHER_iv_length(cipher)) < 0) - goto err; - } +X509_ALGOR *PKCS5_pbe2_set(const EVP_CIPHER *cipher, int iter, + unsigned char *salt, int saltlen) +{ + return PKCS5_pbe2_set_iv(cipher, iter, salt, saltlen, NULL, -1); +} - EVP_CIPHER_CTX_init(&ctx); +X509_ALGOR *PKCS5_pbkdf2_set(int iter, unsigned char *salt, int saltlen, + int prf_nid, int keylen) +{ + X509_ALGOR *keyfunc = NULL; + PBKDF2PARAM *kdf = NULL; + ASN1_OCTET_STRING *osalt = NULL; - /* Dummy cipherinit to just setup the IV, and PRF */ - if (!EVP_CipherInit_ex(&ctx, cipher, NULL, NULL, iv, 0)) - goto err; - if(EVP_CIPHER_param_to_asn1(&ctx, scheme->parameter) < 0) { - ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, - ASN1_R_ERROR_SETTING_CIPHER_PARAMS); - EVP_CIPHER_CTX_cleanup(&ctx); - goto err; - } - /* If prf NID unspecified see if cipher has a preference. - * An error is OK here: just means use default PRF. - */ - if ((prf_nid == -1) && - EVP_CIPHER_CTX_ctrl(&ctx, EVP_CTRL_PBE_PRF_NID, 0, &prf_nid) <= 0) - { - ERR_clear_error(); - prf_nid = NID_hmacWithSHA1; - } - EVP_CIPHER_CTX_cleanup(&ctx); + if (!(kdf = PBKDF2PARAM_new())) + goto merr; + if (!(osalt = M_ASN1_OCTET_STRING_new())) + goto merr; - /* If its RC2 then we'd better setup the key length */ + kdf->salt->value.octet_string = osalt; + kdf->salt->type = V_ASN1_OCTET_STRING; - if(alg_nid == NID_rc2_cbc) - keylen = EVP_CIPHER_key_length(cipher); - else - keylen = -1; + if (!saltlen) + saltlen = PKCS5_SALT_LEN; + if (!(osalt->data = OPENSSL_malloc(saltlen))) + goto merr; - /* Setup keyfunc */ + osalt->length = saltlen; - X509_ALGOR_free(pbe2->keyfunc); + if (salt) + memcpy(osalt->data, salt, saltlen); + else if (RAND_pseudo_bytes(osalt->data, saltlen) < 0) + goto merr; - pbe2->keyfunc = PKCS5_pbkdf2_set(iter, salt, saltlen, prf_nid, keylen); + if (iter <= 0) + iter = PKCS5_DEFAULT_ITER; - if (!pbe2->keyfunc) - goto merr; + if (!ASN1_INTEGER_set(kdf->iter, iter)) + goto merr; - /* Now set up top level AlgorithmIdentifier */ + /* If have a key len set it up */ - if(!(ret = X509_ALGOR_new())) goto merr; - if(!(ret->parameter = ASN1_TYPE_new())) goto merr; + if (keylen > 0) { + if (!(kdf->keylength = M_ASN1_INTEGER_new())) + goto merr; + if (!ASN1_INTEGER_set(kdf->keylength, keylen)) + goto merr; + } - ret->algorithm = OBJ_nid2obj(NID_pbes2); + /* prf can stay NULL if we are using hmacWithSHA1 */ + if (prf_nid > 0 && prf_nid != NID_hmacWithSHA1) { + kdf->prf = X509_ALGOR_new(); + if (!kdf->prf) + goto merr; + X509_ALGOR_set0(kdf->prf, OBJ_nid2obj(prf_nid), V_ASN1_NULL, NULL); + } - /* Encode PBE2PARAM into parameter */ + /* Finally setup the keyfunc structure */ - if(!ASN1_item_pack(pbe2, ASN1_ITEM_rptr(PBE2PARAM), - &ret->parameter->value.sequence)) goto merr; - ret->parameter->type = V_ASN1_SEQUENCE; + keyfunc = X509_ALGOR_new(); + if (!keyfunc) + goto merr; - PBE2PARAM_free(pbe2); - pbe2 = NULL; + keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2); - return ret; + /* Encode PBKDF2PARAM into parameter of pbe2 */ - merr: - ASN1err(ASN1_F_PKCS5_PBE2_SET_IV,ERR_R_MALLOC_FAILURE); + if (!(keyfunc->parameter = ASN1_TYPE_new())) + goto merr; - err: - PBE2PARAM_free(pbe2); - /* Note 'scheme' is freed as part of pbe2 */ - X509_ALGOR_free(kalg); - X509_ALGOR_free(ret); + if (!ASN1_item_pack(kdf, ASN1_ITEM_rptr(PBKDF2PARAM), + &keyfunc->parameter->value.sequence)) + goto merr; + keyfunc->parameter->type = V_ASN1_SEQUENCE; - return NULL; + PBKDF2PARAM_free(kdf); + return keyfunc; + merr: + ASN1err(ASN1_F_PKCS5_PBKDF2_SET, ERR_R_MALLOC_FAILURE); + PBKDF2PARAM_free(kdf); + X509_ALGOR_free(keyfunc); + return NULL; } - -X509_ALGOR *PKCS5_pbe2_set(const EVP_CIPHER *cipher, int iter, - unsigned char *salt, int saltlen) - { - return PKCS5_pbe2_set_iv(cipher, iter, salt, saltlen, NULL, -1); - } - -X509_ALGOR *PKCS5_pbkdf2_set(int iter, unsigned char *salt, int saltlen, - int prf_nid, int keylen) - { - X509_ALGOR *keyfunc = NULL; - PBKDF2PARAM *kdf = NULL; - ASN1_OCTET_STRING *osalt = NULL; - - if(!(kdf = PBKDF2PARAM_new())) - goto merr; - if(!(osalt = M_ASN1_OCTET_STRING_new())) - goto merr; - - kdf->salt->value.octet_string = osalt; - kdf->salt->type = V_ASN1_OCTET_STRING; - - if (!saltlen) - saltlen = PKCS5_SALT_LEN; - if (!(osalt->data = OPENSSL_malloc (saltlen))) - goto merr; - - osalt->length = saltlen; - - if (salt) - memcpy (osalt->data, salt, saltlen); - else if (RAND_pseudo_bytes (osalt->data, saltlen) < 0) - goto merr; - - if(iter <= 0) - iter = PKCS5_DEFAULT_ITER; - - if(!ASN1_INTEGER_set(kdf->iter, iter)) - goto merr; - - /* If have a key len set it up */ - - if(keylen > 0) - { - if(!(kdf->keylength = M_ASN1_INTEGER_new())) - goto merr; - if(!ASN1_INTEGER_set (kdf->keylength, keylen)) - goto merr; - } - - /* prf can stay NULL if we are using hmacWithSHA1 */ - if (prf_nid > 0 && prf_nid != NID_hmacWithSHA1) - { - kdf->prf = X509_ALGOR_new(); - if (!kdf->prf) - goto merr; - X509_ALGOR_set0(kdf->prf, OBJ_nid2obj(prf_nid), - V_ASN1_NULL, NULL); - } - - /* Finally setup the keyfunc structure */ - - keyfunc = X509_ALGOR_new(); - if (!keyfunc) - goto merr; - - keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2); - - /* Encode PBKDF2PARAM into parameter of pbe2 */ - - if(!(keyfunc->parameter = ASN1_TYPE_new())) - goto merr; - - if(!ASN1_item_pack(kdf, ASN1_ITEM_rptr(PBKDF2PARAM), - &keyfunc->parameter->value.sequence)) - goto merr; - keyfunc->parameter->type = V_ASN1_SEQUENCE; - - PBKDF2PARAM_free(kdf); - return keyfunc; - - merr: - ASN1err(ASN1_F_PKCS5_PBKDF2_SET,ERR_R_MALLOC_FAILURE); - PBKDF2PARAM_free(kdf); - X509_ALGOR_free(keyfunc); - return NULL; - } -