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/*
* Copyright 1999-2018 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 <openssl/evp.h>
#include <openssl/pkcs12.h>
#include <openssl/x509.h>
#include "crypto/evp.h"
#include "evp_local.h"
/* Password based encryption (PBE) functions */
/* Setup a cipher context from a PBE algorithm */
struct evp_pbe_st {
int pbe_type;
int pbe_nid;
int cipher_nid;
int md_nid;
EVP_PBE_KEYGEN *keygen;
};
static STACK_OF(EVP_PBE_CTL) *pbe_algs;
static const EVP_PBE_CTL builtin_pbe[] = {
{EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndDES_CBC,
NID_des_cbc, NID_md2, PKCS5_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndDES_CBC,
NID_des_cbc, NID_md5, PKCS5_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndRC2_CBC,
NID_rc2_64_cbc, NID_sha1, PKCS5_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_id_pbkdf2, -1, -1, PKCS5_v2_PBKDF2_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC4,
NID_rc4, NID_sha1, PKCS12_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC4,
NID_rc4_40, NID_sha1, PKCS12_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And3_Key_TripleDES_CBC,
NID_des_ede3_cbc, NID_sha1, PKCS12_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And2_Key_TripleDES_CBC,
NID_des_ede_cbc, NID_sha1, PKCS12_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC2_CBC,
NID_rc2_cbc, NID_sha1, PKCS12_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC2_CBC,
NID_rc2_40_cbc, NID_sha1, PKCS12_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbes2, -1, -1, PKCS5_v2_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndRC2_CBC,
NID_rc2_64_cbc, NID_md2, PKCS5_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndRC2_CBC,
NID_rc2_64_cbc, NID_md5, PKCS5_PBE_keyivgen},
{EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndDES_CBC,
NID_des_cbc, NID_sha1, PKCS5_PBE_keyivgen},
{EVP_PBE_TYPE_PRF, NID_hmacWithSHA1, -1, NID_sha1, 0},
{EVP_PBE_TYPE_PRF, NID_hmac_md5, -1, NID_md5, 0},
{EVP_PBE_TYPE_PRF, NID_hmac_sha1, -1, NID_sha1, 0},
{EVP_PBE_TYPE_PRF, NID_hmacWithMD5, -1, NID_md5, 0},
{EVP_PBE_TYPE_PRF, NID_hmacWithSHA224, -1, NID_sha224, 0},
{EVP_PBE_TYPE_PRF, NID_hmacWithSHA256, -1, NID_sha256, 0},
{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_PRF, NID_id_tc26_hmac_gost_3411_2012_256, -1,
NID_id_GostR3411_2012_256, 0},
{EVP_PBE_TYPE_PRF, NID_id_tc26_hmac_gost_3411_2012_512, -1,
NID_id_GostR3411_2012_512, 0},
{EVP_PBE_TYPE_PRF, NID_hmacWithSHA512_224, -1, NID_sha512_224, 0},
{EVP_PBE_TYPE_PRF, NID_hmacWithSHA512_256, -1, NID_sha512_256, 0},
{EVP_PBE_TYPE_KDF, NID_id_pbkdf2, -1, -1, PKCS5_v2_PBKDF2_keyivgen},
#ifndef OPENSSL_NO_SCRYPT
{EVP_PBE_TYPE_KDF, NID_id_scrypt, -1, -1, PKCS5_v2_scrypt_keyivgen}
#endif
};
int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de)
{
const EVP_CIPHER *cipher;
const EVP_MD *md;
int cipher_nid, md_nid;
EVP_PBE_KEYGEN *keygen;
if (!EVP_PBE_find(EVP_PBE_TYPE_OUTER, OBJ_obj2nid(pbe_obj),
&cipher_nid, &md_nid, &keygen)) {
char obj_tmp[80];
EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_PBE_ALGORITHM);
if (pbe_obj == NULL)
OPENSSL_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 == NULL)
passlen = 0;
else if (passlen == -1)
passlen = strlen(pass);
if (cipher_nid == -1)
cipher = NULL;
else {
cipher = EVP_get_cipherbynid(cipher_nid);
if (!cipher) {
EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_CIPHER);
return 0;
}
}
if (md_nid == -1)
md = NULL;
else {
md = EVP_get_digestbynid(md_nid);
if (!md) {
EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_DIGEST);
return 0;
}
}
if (!keygen(ctx, pass, passlen, param, cipher, md, en_de)) {
EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_KEYGEN_FAILURE);
return 0;
}
return 1;
}
DECLARE_OBJ_BSEARCH_CMP_FN(EVP_PBE_CTL, EVP_PBE_CTL, pbe2);
static int pbe2_cmp(const EVP_PBE_CTL *pbe1, const EVP_PBE_CTL *pbe2)
{
int ret = pbe1->pbe_type - pbe2->pbe_type;
if (ret)
return ret;
else
return pbe1->pbe_nid - pbe2->pbe_nid;
}
IMPLEMENT_OBJ_BSEARCH_CMP_FN(EVP_PBE_CTL, EVP_PBE_CTL, pbe2);
static int pbe_cmp(const EVP_PBE_CTL *const *a, const EVP_PBE_CTL *const *b)
{
int ret = (*a)->pbe_type - (*b)->pbe_type;
if (ret)
return ret;
else
return (*a)->pbe_nid - (*b)->pbe_nid;
}
/* Add a PBE algorithm */
int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid,
int md_nid, EVP_PBE_KEYGEN *keygen)
{
EVP_PBE_CTL *pbe_tmp;
if (pbe_algs == NULL) {
pbe_algs = sk_EVP_PBE_CTL_new(pbe_cmp);
if (pbe_algs == NULL)
goto err;
}
if ((pbe_tmp = OPENSSL_malloc(sizeof(*pbe_tmp))) == NULL)
goto err;
pbe_tmp->pbe_type = pbe_type;
pbe_tmp->pbe_nid = pbe_nid;
pbe_tmp->cipher_nid = cipher_nid;
pbe_tmp->md_nid = md_nid;
pbe_tmp->keygen = keygen;
if (!sk_EVP_PBE_CTL_push(pbe_algs, pbe_tmp)) {
OPENSSL_free(pbe_tmp);
goto err;
}
return 1;
err:
EVPerr(EVP_F_EVP_PBE_ALG_ADD_TYPE, ERR_R_MALLOC_FAILURE);
return 0;
}
int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
EVP_PBE_KEYGEN *keygen)
{
int cipher_nid, md_nid;
if (cipher)
cipher_nid = EVP_CIPHER_nid(cipher);
else
cipher_nid = -1;
if (md)
md_nid = EVP_MD_type(md);
else
md_nid = -1;
return EVP_PBE_alg_add_type(EVP_PBE_TYPE_OUTER, nid,
cipher_nid, md_nid, keygen);
}
int EVP_PBE_find(int type, int pbe_nid,
int *pcnid, int *pmnid, EVP_PBE_KEYGEN **pkeygen)
{
EVP_PBE_CTL *pbetmp = NULL, pbelu;
int i;
if (pbe_nid == NID_undef)
return 0;
pbelu.pbe_type = type;
pbelu.pbe_nid = pbe_nid;
if (pbe_algs != NULL) {
i = sk_EVP_PBE_CTL_find(pbe_algs, &pbelu);
pbetmp = sk_EVP_PBE_CTL_value(pbe_algs, i);
}
if (pbetmp == NULL) {
pbetmp = OBJ_bsearch_pbe2(&pbelu, builtin_pbe, OSSL_NELEM(builtin_pbe));
}
if (pbetmp == NULL)
return 0;
if (pcnid)
*pcnid = pbetmp->cipher_nid;
if (pmnid)
*pmnid = pbetmp->md_nid;
if (pkeygen)
*pkeygen = pbetmp->keygen;
return 1;
}
static void free_evp_pbe_ctl(EVP_PBE_CTL *pbe)
{
OPENSSL_free(pbe);
}
void EVP_PBE_cleanup(void)
{
sk_EVP_PBE_CTL_pop_free(pbe_algs, free_evp_pbe_ctl);
pbe_algs = NULL;
}
int EVP_PBE_get(int *ptype, int *ppbe_nid, size_t num)
{
const EVP_PBE_CTL *tpbe;
if (num >= OSSL_NELEM(builtin_pbe))
return 0;
tpbe = builtin_pbe + num;
if (ptype)
*ptype = tpbe->pbe_type;
if (ppbe_nid)
*ppbe_nid = tpbe->pbe_nid;
return 1;
}
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