#include <stdio.h>
#include <stdlib.h>
+#include "cryptlib.h"
#include <openssl/x509.h>
#include <openssl/evp.h>
-#include "cryptlib.h"
/* PKCS#5 v1.5 compatible PBE functions: see PKCS#5 v2.0 for more info.
*/
void PKCS5_PBE_add(void)
{
-#ifndef NO_DES
+#ifndef OPENSSL_NO_DES
+# ifndef OPENSSL_NO_MD5
EVP_PBE_alg_add(NID_pbeWithMD5AndDES_CBC, EVP_des_cbc(), EVP_md5(),
PKCS5_PBE_keyivgen);
+# endif
+# ifndef OPENSSL_NO_MD2
EVP_PBE_alg_add(NID_pbeWithMD2AndDES_CBC, EVP_des_cbc(), EVP_md2(),
PKCS5_PBE_keyivgen);
+# endif
+# ifndef OPENSSL_NO_SHA
EVP_PBE_alg_add(NID_pbeWithSHA1AndDES_CBC, EVP_des_cbc(), EVP_sha1(),
PKCS5_PBE_keyivgen);
+# endif
#endif
-#ifndef NO_RC2
+#ifndef OPENSSL_NO_RC2
+# ifndef OPENSSL_NO_MD5
EVP_PBE_alg_add(NID_pbeWithMD5AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md5(),
PKCS5_PBE_keyivgen);
+# endif
+# ifndef OPENSSL_NO_MD2
EVP_PBE_alg_add(NID_pbeWithMD2AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md2(),
PKCS5_PBE_keyivgen);
+# endif
+# ifndef OPENSSL_NO_SHA
EVP_PBE_alg_add(NID_pbeWithSHA1AndRC2_CBC, EVP_rc2_64_cbc(), EVP_sha1(),
PKCS5_PBE_keyivgen);
+# endif
+#endif
+#ifndef OPENSSL_NO_HMAC
+EVP_PBE_alg_add(NID_pbes2, NULL, NULL, PKCS5_v2_PBE_keyivgen);
#endif
}
-int PKCS5_PBE_keyivgen(const char *pass, int passlen, unsigned char *salt,
- int saltlen, int iter, EVP_CIPHER *cipher, EVP_MD *md,
- unsigned char *key, unsigned char *iv)
+int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen,
+ ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md,
+ int en_de)
{
EVP_MD_CTX ctx;
unsigned char md_tmp[EVP_MAX_MD_SIZE];
+ unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
int i;
- EVP_DigestInit (&ctx, md);
- EVP_DigestUpdate (&ctx, pass, passlen);
- EVP_DigestUpdate (&ctx, salt, saltlen);
- EVP_DigestFinal (&ctx, md_tmp, NULL);
+ PBEPARAM *pbe;
+ int saltlen, iter;
+ unsigned char *salt;
+ const unsigned char *pbuf;
+
+ /* Extract useful info from parameter */
+ pbuf = param->value.sequence->data;
+ if (!param || (param->type != V_ASN1_SEQUENCE) ||
+ !(pbe = d2i_PBEPARAM (NULL, &pbuf, param->value.sequence->length))) {
+ EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_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(!pass) passlen = 0;
+ else if(passlen == -1) passlen = strlen(pass);
+
+ EVP_MD_CTX_init(&ctx);
+ EVP_DigestInit_ex(&ctx, md, NULL);
+ EVP_DigestUpdate(&ctx, pass, passlen);
+ EVP_DigestUpdate(&ctx, salt, saltlen);
+ PBEPARAM_free(pbe);
+ EVP_DigestFinal_ex(&ctx, md_tmp, NULL);
for (i = 1; i < iter; i++) {
- EVP_DigestInit(&ctx, md);
+ EVP_DigestInit_ex(&ctx, md, NULL);
EVP_DigestUpdate(&ctx, md_tmp, EVP_MD_size(md));
- EVP_DigestFinal (&ctx, md_tmp, NULL);
+ EVP_DigestFinal_ex (&ctx, md_tmp, NULL);
}
- memcpy (key, md_tmp, EVP_CIPHER_key_length(cipher));
- memcpy (iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)),
+ EVP_MD_CTX_cleanup(&ctx);
+ OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= (int)sizeof(md_tmp));
+ memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher));
+ OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16);
+ memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)),
EVP_CIPHER_iv_length(cipher));
+ EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de);
+ OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE);
+ OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
+ OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
return 1;
}