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Support for alternative KDFs.

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Don't hard code NID_id_pbkdf2 in PBES2: look it up in PBE table.
Reviewed-by: Andy Polyakov <appro@openssl.org>
This commit is contained in:
Dr. Stephen Henson 2015-02-06 12:08:45 +00:00
parent 849037169d
commit d6c5462ef8
3 changed files with 7 additions and 4 deletions
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2
crypto/evp/evp.h
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@ -1073,6 +1073,8 @@ int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
# define EVP_PBE_TYPE_OUTER 0x0
/* Is an PRF type OID */
# define EVP_PBE_TYPE_PRF 0x1
/* Is a PKCS#5 v2.0 KDF */
# define EVP_PBE_TYPE_KDF 0x2
int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid,
int md_nid, EVP_PBE_KEYGEN *keygen);

1
crypto/evp/evp_pbe.c
View File

@ -118,6 +118,7 @@ static const EVP_PBE_CTL builtin_pbe[] = {
{EVP_PBE_TYPE_PRF, NID_hmacWithSHA384, -1, NID_sha384, 0},
{EVP_PBE_TYPE_PRF, NID_hmacWithSHA512, -1, NID_sha512, 0},
{EVP_PBE_TYPE_PRF, NID_id_HMACGostR3411_94, -1, NID_id_GostR3411_94, 0},
{EVP_PBE_TYPE_KDF, NID_id_pbkdf2, -1, -1, PKCS5_v2_PBKDF2_keyivgen}
};
#ifdef TEST

8
crypto/evp/p5_crpt2.c
View File

@ -194,6 +194,7 @@ int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
int plen;
PBE2PARAM *pbe2 = NULL;
const EVP_CIPHER *cipher;
EVP_PBE_KEYGEN *kdf;
int rv = 0;
@ -211,8 +212,8 @@ int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
}
/* See if we recognise the key derivation function */
if (OBJ_obj2nid(pbe2->keyfunc->algorithm) != NID_id_pbkdf2) {
if (!EVP_PBE_find(EVP_PBE_TYPE_KDF, OBJ_obj2nid(pbe2->keyfunc->algorithm),
NULL, NULL, &kdf)) {
EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,
EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION);
goto err;
@ -236,8 +237,7 @@ int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_CIPHER_PARAMETER_ERROR);
goto err;
}
rv = PKCS5_v2_PBKDF2_keyivgen(ctx, pass, passlen,
pbe2->keyfunc->parameter, c, md, en_de);
rv = kdf(ctx, pass, passlen, pbe2->keyfunc->parameter, NULL, NULL, en_de);
err:
PBE2PARAM_free(pbe2);
return rv;