int PKCS12_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
ASN1_TYPE *param, const EVP_CIPHER *cipher,
const EVP_MD *md, int en_de)
{
PBEPARAM *pbe;
int saltlen, iter, ret;
unsigned char *salt;
const unsigned char *pbuf;
unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
if (cipher == NULL)
return 0;
/* Extract useful info from parameter */
if (param == NULL || param->type != V_ASN1_SEQUENCE ||
param->value.sequence == NULL) {
PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_DECODE_ERROR);
return 0;
}
pbuf = param->value.sequence->data;
if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) {
PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_DECODE_ERROR);
return 0;
}
if (!pbe->iter)
iter = 1;
else
iter = ASN1_INTEGER_get(pbe->iter);
salt = pbe->salt->data;
saltlen = pbe->salt->length;
if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_KEY_ID,
iter, EVP_CIPHER_key_length(cipher), key, md)) {
PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_KEY_GEN_ERROR);
PBEPARAM_free(pbe);
return 0;
}
if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_IV_ID,
iter, EVP_CIPHER_iv_length(cipher), iv, md)) {
PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_IV_GEN_ERROR);
PBEPARAM_free(pbe);
return 0;
}
PBEPARAM_free(pbe);
ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, en_de);
OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
return ret;
}
static int
test_pkcs12_pbe(struct tests *t)
{
void *key;
size_t pwlen = 0;
key = malloc(t->keylen);
if (t->password)
pwlen = strlen(t->password);
if (!PKCS12_key_gen(t->password, pwlen,
t->salt, t->saltsize,
t->id, t->iterations, t->keylen,
key, t->md()))
{
printf("key_gen failed\n");
return 1;
}
if (memcmp(t->key, key, t->keylen) != 0) {
printf("incorrect key\n");
free(key);
return 1;
}
free(key);
return 0;
}
/* Generate a MAC */
int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
unsigned char *mac, unsigned int *maclen)
{
const EVP_MD *md_type;
HMAC_CTX hmac;
unsigned char key[EVP_MAX_MD_SIZE], *salt;
int saltlen, iter;
int md_size = 0;
int md_type_nid;
if (!PKCS7_type_is_data(p12->authsafes)) {
PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_CONTENT_TYPE_NOT_DATA);
return 0;
}
salt = p12->mac->salt->data;
saltlen = p12->mac->salt->length;
if (!p12->mac->iter)
iter = 1;
else
iter = ASN1_INTEGER_get(p12->mac->iter);
if ((md_type = EVP_get_digestbyobj(p12->mac->dinfo->algor->algorithm))
== NULL) {
PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
return 0;
}
md_size = EVP_MD_size(md_type);
md_type_nid = EVP_MD_type(md_type);
if (md_size < 0)
return 0;
if ((md_type_nid == NID_id_GostR3411_94
|| md_type_nid == NID_id_GostR3411_2012_256
|| md_type_nid == NID_id_GostR3411_2012_512)
&& !getenv("LEGACY_GOST_PKCS12")) {
md_size = TK26_MAC_KEY_LEN;
if (!pkcs12_gen_gost_mac_key(pass, passlen, salt, saltlen, iter,
md_size, key, md_type)) {
PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
return 0;
}
} else
if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter,
md_size, key, md_type)) {
PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
return 0;
}
HMAC_CTX_init(&hmac);
if (!HMAC_Init_ex(&hmac, key, md_size, md_type, NULL)
|| !HMAC_Update(&hmac, p12->authsafes->d.data->data,
p12->authsafes->d.data->length)
|| !HMAC_Final(&hmac, mac, maclen)) {
HMAC_CTX_cleanup(&hmac);
return 0;
}
HMAC_CTX_cleanup(&hmac);
return 1;
}
/* Generate a MAC */
int
PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
unsigned char *mac, unsigned int *maclen)
{
const EVP_MD *md_type;
HMAC_CTX hmac;
unsigned char key[EVP_MAX_MD_SIZE], *salt;
int saltlen, iter;
int md_size;
if (!PKCS7_type_is_data(p12->authsafes)) {
PKCS12error(PKCS12_R_CONTENT_TYPE_NOT_DATA);
return 0;
}
salt = p12->mac->salt->data;
saltlen = p12->mac->salt->length;
if (!p12->mac->iter)
iter = 1;
else if ((iter = ASN1_INTEGER_get(p12->mac->iter)) <= 0) {
PKCS12error(PKCS12_R_DECODE_ERROR);
return 0;
}
if (!(md_type = EVP_get_digestbyobj(
p12->mac->dinfo->algor->algorithm))) {
PKCS12error(PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
return 0;
}
md_size = EVP_MD_size(md_type);
if (md_size < 0)
return 0;
if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter,
md_size, key, md_type)) {
PKCS12error(PKCS12_R_KEY_GEN_ERROR);
return 0;
}
HMAC_CTX_init(&hmac);
if (!HMAC_Init_ex(&hmac, key, md_size, md_type, NULL) ||
!HMAC_Update(&hmac, p12->authsafes->d.data->data,
p12->authsafes->d.data->length) ||
!HMAC_Final(&hmac, mac, maclen)) {
HMAC_CTX_cleanup(&hmac);
return 0;
}
HMAC_CTX_cleanup(&hmac);
return 1;
}
