OpenSSL: Fix pbkdf2_sha1() wrapper

This was supposed to use the iterations parameter from the caller
instead of the hardcoded 4096. In practice, this did not have problems
for normal uses since that 4096 value was used in all cases.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/crypto/crypto_openssl.c

@@ -693,11 +693,11 @@ int pbkdf2_sha1(const char *passphrase, const u8 *ssid, size_t ssid_len,
 #if OPENSSL_VERSION_NUMBER < 0x00908000
 	if (PKCS5_PBKDF2_HMAC_SHA1(passphrase, os_strlen(passphrase),
 				   (unsigned char *) ssid,
-				   ssid_len, 4096, buflen, buf) != 1)
+				   ssid_len, iterations, buflen, buf) != 1)
 		return -1;
 #else /* openssl < 0.9.8 */
 	if (PKCS5_PBKDF2_HMAC_SHA1(passphrase, os_strlen(passphrase), ssid,
-				   ssid_len, 4096, buflen, buf) != 1)
+				   ssid_len, iterations, buflen, buf) != 1)
 		return -1;
 #endif /* openssl < 0.9.8 */
 	return 0;