<?php
namespace Yurun\PaySDK\Lib\Encrypt;
class DSA extends Base
{
public static function signPrivate($data, $key)
{
$key = static::parseKey($key);
$key = "-----BEGIN DSA PRIVATE KEY-----\n{$key}\n-----END DSA PRIVATE KEY-----";
openssl_sign($data, $sign, $key, OPENSSL_ALGO_DSS1);
return $sign;
}
public static function signPrivateFromFile($data, $fileName)
{
$key = file_get_contents($fileName);
$res = openssl_get_privatekey($key);
if (!$res)
{
throw new \Exception('私钥文件格式错误');
}
openssl_sign($data, $sign, $res, OPENSSL_ALGO_DSS1);
openssl_free_key($res);
return $sign;
}
public static function verifyPublic($data, $key, $sign)
{
$key = static::parseKey($key);
$key = "-----BEGIN PUBLIC KEY-----\n{$key}\n-----END PUBLIC KEY-----";
return 1 === openssl_verify($data, $sign, $key, OPENSSL_ALGO_DSS1);
}
public static function verifyPublicFromFile($data, $fileName, $sign)
{
$key = file_get_contents($fileName);
$res = openssl_get_publickey($key);
if (!$res)
{
throw new \Exception('公钥文件格式错误');
}
$result = openssl_verify($data, $sign, $res, OPENSSL_ALGO_DSS1);
openssl_free_key($res);
return 1 === $result;
}
}