最近遇到hmac_sha1跨语言加密的问题，只提供给了java加密文件，没提供php的，我用php hmac_sha1内置函数,得到的sig加密结果不同，欢迎高手帮忙提供相对应的php代码，提供的java类如下
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public abstract class Coder {
public static final String KEY_SHA = "SHA";
public static final String KEY_MD5 = "MD5";
public static final char hexDigits[] = { ‘0‘, ‘1‘, ‘2‘, ‘3‘, ‘4‘, ‘5‘, ‘6‘, ‘7‘, ‘8‘, ‘9‘,
‘a‘, ‘b‘, ‘c‘, ‘d‘, ‘e‘, ‘f‘ };
public static final String KEY_MAC = "HmacSHA1";
public static byte[] decryptBASE64(String key) throws Exception {
return (new BASE64Decoder()).decodeBuffer(key);
}
/**
* 初始化HMAC密钥
*/
public static String initMacKey() throws Exception {
KeyGenerator keyGenerator = KeyGenerator.getInstance(KEY_MAC);
SecretKey secretKey = keyGenerator.generateKey();
return encryptBASE64(secretKey.getEncoded());
}
/**
* HMAC加密
*/
public static byte[] encryptHMAC(byte[] data, String key) throws Exception {
SecretKey secretKey = new SecretKeySpec(decryptBASE64(key), KEY_MAC);
Mac mac = Mac.getInstance(secretKey.getAlgorithm());
mac.init(secretKey);
return mac.doFinal(data);
}
public static void main(String[] args) {
try {
String param = ‘‘;
String appkey = ‘‘;
byte[] bytes = Coder.encryptHMAC((param).getBytes("utf-8"), appkey);
String sig = new BigInteger(bytes).toString();
System.out.println("sig:" + sig);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
php我用相对应的加密即php自带函数
$sig = hash_hmac("sha1", $str, $key) php得出的sig结果总是和java不一样，求高手帮忙写一个与java加密值sig相同的代码