Fix outlen for openssl function

Even though datalen can't be over int, outlen can.

Author: smalyshev

ext/openssl/openssl.c

@@ -5303,7 +5303,8 @@ PHP_FUNCTION(openssl_encrypt)
 	size_t data_len, method_len, password_len, iv_len = 0, max_iv_len;
 	const EVP_CIPHER *cipher_type;
 	EVP_CIPHER_CTX cipher_ctx;
-	int i=0, outlen, keylen;
+	int i=0, keylen;
+	size_t outlen;
 	zend_string *outbuf;
 	unsigned char *key;
 	zend_bool free_iv;
@@ -5334,7 +5335,7 @@ PHP_FUNCTION(openssl_encrypt)
 	}
 	free_iv = php_openssl_validate_iv(&iv, &iv_len, max_iv_len);
 
-	outlen = (int)data_len + EVP_CIPHER_block_size(cipher_type);
+	outlen = data_len + EVP_CIPHER_block_size(cipher_type);
 	outbuf = zend_string_alloc(outlen, 0);
 
 	EVP_EncryptInit(&cipher_ctx, cipher_type, NULL, NULL);
@@ -5386,7 +5387,8 @@ PHP_FUNCTION(openssl_decrypt)
 	size_t data_len, method_len, password_len, iv_len = 0;
 	const EVP_CIPHER *cipher_type;
 	EVP_CIPHER_CTX cipher_ctx;
-	int i, outlen, keylen;
+	int i, keylen;
+	size_t outlen;
 	zend_string *outbuf;
 	unsigned char *key;
 	zend_string *base64_str = NULL;
@@ -5410,7 +5412,7 @@ PHP_FUNCTION(openssl_decrypt)
 	}
 
 	if (!(options & OPENSSL_RAW_DATA)) {
-		base64_str = php_base64_decode((unsigned char*)data, (int)data_len);
+		base64_str = php_base64_decode((unsigned char*)data, data_len);
 		if (!base64_str) {
 			php_error_docref(NULL, E_WARNING, "Failed to base64 decode the input");
 			RETURN_FALSE;
@@ -5430,7 +5432,7 @@ PHP_FUNCTION(openssl_decrypt)
 
 	free_iv = php_openssl_validate_iv(&iv, &iv_len, EVP_CIPHER_iv_length(cipher_type));
 
-	outlen = (int)data_len + EVP_CIPHER_block_size(cipher_type);
+	outlen = data_len + EVP_CIPHER_block_size(cipher_type);
 	outbuf = zend_string_alloc(outlen, 0);
 
 	EVP_DecryptInit(&cipher_ctx, cipher_type, NULL, NULL);