android端的HmacSHA1和php端的结果不同

Question

php代码：

$secret = "mtHa5YRivVrQ/ZNtoe2oxg==";
$var3 = 11112222;
$signature  = hash_hmac('sha1', $var3, $secret, true);
$data = base64_encode($signature);
echo $data;

输出: Prpji0PmtBsmDo1grDbXMJnJUTs=

Android代码：

String data = 11112222;
String secret = mtHa5YRivVrQ/ZNtoe2oxg==
SecretKeySpec key = new SecretKeySpec((secret).getBytes("UTF-8"), "HmacSHA1");
Mac mac = Mac.getInstance("HmacSHA1");
mac.init(key);
byte[] bytes = mac.doFinal(data.getBytes("UTF-8"));
return new String(Base64.encodeToString(bytes, Base64.DEFAULT));

输出: q85cCMvVB7PX39upoT5/+9J0bWM=

我不知道wrong.please帮了我什么

Answer 1

您的密钥Base64已被编码，因此您必须首先将其解码为普通字节数组：

PHP：

$secret64 = "mtHa5YRivVrQ/ZNtoe2oxg==";
$secret = base64_decode($secret64);
$data = "11112222";
$hmac  = hash_hmac('sha1', $data, $secret, true);
$hmac64 = base64_encode($signature);
echo $hmac64;

爪哇：

String data = "11112222";
String secret64 = "mtHa5YRivVrQ/ZNtoe2oxg==";
byte[] secret = Base64.decode(secret64, Base64.DEFAULT);
SecretKeySpec key = new SecretKeySpec(secret, "HmacSHA1");
Mac mac = Mac.getInstance("HmacSHA1");
mac.init(key);
byte[] bytes = mac.doFinal(data.getBytes("UTF-8"));
return Base64.encodeToString(bytes, Base64.DEFAULT);

结果：

LdKcsVyMX0BAhugGFEr4dAlFfe8=