mirror of
https://github.com/openssl/openssl.git
synced 2024-12-21 06:09:35 +08:00
284 lines
7.9 KiB
C
284 lines
7.9 KiB
C
/*
|
|
* Copyright 1999-2024 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "internal/cryptlib.h"
|
|
#include "crypto/asn1.h"
|
|
#include "crypto/evp.h"
|
|
#include <openssl/asn1t.h>
|
|
#include <openssl/core.h>
|
|
#include <openssl/core_names.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/rand.h>
|
|
|
|
/* PKCS#5 v2.0 password based encryption structures */
|
|
|
|
ASN1_SEQUENCE(PBE2PARAM) = {
|
|
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_SEQUENCE_END(PBKDF2PARAM)
|
|
|
|
IMPLEMENT_ASN1_FUNCTIONS(PBKDF2PARAM)
|
|
|
|
ASN1_SEQUENCE(PBMAC1PARAM) = {
|
|
ASN1_SIMPLE(PBMAC1PARAM, keyDerivationFunc, X509_ALGOR),
|
|
ASN1_SIMPLE(PBMAC1PARAM, messageAuthScheme, X509_ALGOR)
|
|
} ASN1_SEQUENCE_END(PBMAC1PARAM)
|
|
|
|
IMPLEMENT_ASN1_FUNCTIONS(PBMAC1PARAM)
|
|
|
|
/*
|
|
* 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_ex(const EVP_CIPHER *cipher, int iter,
|
|
unsigned char *salt, int saltlen,
|
|
unsigned char *aiv, int prf_nid,
|
|
OSSL_LIB_CTX *libctx)
|
|
{
|
|
X509_ALGOR *scheme = NULL, *ret = NULL;
|
|
int alg_nid, keylen, ivlen;
|
|
EVP_CIPHER_CTX *ctx = NULL;
|
|
unsigned char iv[EVP_MAX_IV_LENGTH];
|
|
PBE2PARAM *pbe2 = NULL;
|
|
|
|
alg_nid = EVP_CIPHER_get_type(cipher);
|
|
if (alg_nid == NID_undef) {
|
|
ERR_raise(ERR_LIB_ASN1, ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
|
|
goto err;
|
|
}
|
|
|
|
if ((pbe2 = PBE2PARAM_new()) == NULL) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
|
|
/* Setup the AlgorithmIdentifier for the encryption scheme */
|
|
scheme = pbe2->encryption;
|
|
scheme->algorithm = OBJ_nid2obj(alg_nid);
|
|
if ((scheme->parameter = ASN1_TYPE_new()) == NULL) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
|
|
/* Create random IV */
|
|
ivlen = EVP_CIPHER_get_iv_length(cipher);
|
|
if (ivlen > 0) {
|
|
if (aiv)
|
|
memcpy(iv, aiv, ivlen);
|
|
else if (RAND_bytes_ex(libctx, iv, ivlen, 0) <= 0)
|
|
goto err;
|
|
}
|
|
|
|
ctx = EVP_CIPHER_CTX_new();
|
|
if (ctx == NULL) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_EVP_LIB);
|
|
goto err;
|
|
}
|
|
|
|
/* 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) {
|
|
ERR_raise(ERR_LIB_ASN1, ASN1_R_ERROR_SETTING_CIPHER_PARAMS);
|
|
goto err;
|
|
}
|
|
/*
|
|
* If prf NID unspecified see if cipher has a preference. An error is OK
|
|
* here: just means use default PRF.
|
|
*/
|
|
ERR_set_mark();
|
|
if ((prf_nid == -1) &&
|
|
EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_PBE_PRF_NID, 0, &prf_nid) <= 0) {
|
|
prf_nid = NID_hmacWithSHA256;
|
|
}
|
|
ERR_pop_to_mark();
|
|
EVP_CIPHER_CTX_free(ctx);
|
|
ctx = NULL;
|
|
|
|
/* If its RC2 then we'd better setup the key length */
|
|
|
|
if (alg_nid == NID_rc2_cbc)
|
|
keylen = EVP_CIPHER_get_key_length(cipher);
|
|
else
|
|
keylen = -1;
|
|
|
|
/* Setup keyfunc */
|
|
|
|
X509_ALGOR_free(pbe2->keyfunc);
|
|
|
|
pbe2->keyfunc = PKCS5_pbkdf2_set_ex(iter, salt, saltlen, prf_nid, keylen,
|
|
libctx);
|
|
|
|
if (pbe2->keyfunc == NULL) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
|
|
/* Now set up top level AlgorithmIdentifier */
|
|
|
|
if ((ret = X509_ALGOR_new()) == NULL) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_X509_LIB);
|
|
goto err;
|
|
}
|
|
|
|
ret->algorithm = OBJ_nid2obj(NID_pbes2);
|
|
|
|
/* Encode PBE2PARAM into parameter */
|
|
|
|
if (!ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(PBE2PARAM), pbe2,
|
|
&ret->parameter)) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
|
|
PBE2PARAM_free(pbe2);
|
|
pbe2 = NULL;
|
|
|
|
return ret;
|
|
|
|
err:
|
|
EVP_CIPHER_CTX_free(ctx);
|
|
PBE2PARAM_free(pbe2);
|
|
/* Note 'scheme' is freed as part of pbe2 */
|
|
X509_ALGOR_free(ret);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
X509_ALGOR *PKCS5_pbe2_set_iv(const EVP_CIPHER *cipher, int iter,
|
|
unsigned char *salt, int saltlen,
|
|
unsigned char *aiv, int prf_nid)
|
|
{
|
|
return PKCS5_pbe2_set_iv_ex(cipher, iter, salt, saltlen, aiv, prf_nid,
|
|
NULL);
|
|
}
|
|
|
|
X509_ALGOR *PKCS5_pbe2_set(const EVP_CIPHER *cipher, int iter,
|
|
unsigned char *salt, int saltlen)
|
|
{
|
|
return PKCS5_pbe2_set_iv_ex(cipher, iter, salt, saltlen, NULL, -1,
|
|
NULL);
|
|
}
|
|
|
|
|
|
X509_ALGOR *PKCS5_pbkdf2_set_ex(int iter, unsigned char *salt, int saltlen,
|
|
int prf_nid, int keylen,
|
|
OSSL_LIB_CTX *libctx)
|
|
{
|
|
X509_ALGOR *keyfunc = NULL;
|
|
PBKDF2PARAM *kdf = NULL;
|
|
ASN1_OCTET_STRING *osalt = NULL;
|
|
|
|
if ((kdf = PBKDF2PARAM_new()) == NULL) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
if ((osalt = ASN1_OCTET_STRING_new()) == NULL) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
|
|
kdf->salt->value.octet_string = osalt;
|
|
kdf->salt->type = V_ASN1_OCTET_STRING;
|
|
|
|
if (saltlen < 0) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_PASSED_INVALID_ARGUMENT);
|
|
goto err;
|
|
}
|
|
if (saltlen == 0)
|
|
saltlen = PKCS5_DEFAULT_PBE2_SALT_LEN;
|
|
if ((osalt->data = OPENSSL_malloc(saltlen)) == NULL)
|
|
goto err;
|
|
|
|
|
|
osalt->length = saltlen;
|
|
|
|
if (salt) {
|
|
memcpy(osalt->data, salt, saltlen);
|
|
} else if (RAND_bytes_ex(libctx, osalt->data, saltlen, 0) <= 0) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_RAND_LIB);
|
|
goto err;
|
|
}
|
|
|
|
if (iter <= 0)
|
|
iter = PKCS5_DEFAULT_ITER;
|
|
|
|
if (!ASN1_INTEGER_set(kdf->iter, iter)) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
|
|
/* If have a key len set it up */
|
|
|
|
if (keylen > 0) {
|
|
if ((kdf->keylength = ASN1_INTEGER_new()) == NULL) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
if (!ASN1_INTEGER_set(kdf->keylength, keylen)) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
/* prf can stay NULL if we are using hmacWithSHA1 */
|
|
if (prf_nid > 0 && prf_nid != NID_hmacWithSHA1) {
|
|
kdf->prf = ossl_X509_ALGOR_from_nid(prf_nid, V_ASN1_NULL, NULL);
|
|
if (kdf->prf == NULL) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_X509_LIB);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
/* Finally setup the keyfunc structure */
|
|
|
|
keyfunc = X509_ALGOR_new();
|
|
if (keyfunc == NULL) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_X509_LIB);
|
|
goto err;
|
|
}
|
|
|
|
keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2);
|
|
|
|
/* Encode PBKDF2PARAM into parameter of pbe2 */
|
|
|
|
if (!ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(PBKDF2PARAM), kdf,
|
|
&keyfunc->parameter)) {
|
|
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
|
|
PBKDF2PARAM_free(kdf);
|
|
return keyfunc;
|
|
|
|
err:
|
|
PBKDF2PARAM_free(kdf);
|
|
X509_ALGOR_free(keyfunc);
|
|
return NULL;
|
|
}
|
|
|
|
X509_ALGOR *PKCS5_pbkdf2_set(int iter, unsigned char *salt, int saltlen,
|
|
int prf_nid, int keylen)
|
|
{
|
|
return PKCS5_pbkdf2_set_ex(iter, salt, saltlen, prf_nid, keylen, NULL);
|
|
}
|
|
|