hash_hmac analog for Java

Question

I need to get string's hash in Java, same as for PHP's hash_hmac.

Here's my PHP sample:

$secret_key = 'foo';
$sig_str = 'bar';
$hash = hash_hmac('md5', $sig_str, $secret_key);

And that's what I found for Java:

SecretKeySpec keySpec = new SecretKeySpec("foo".getBytes(), "HmacMD5");
Mac mac = Mac.getInstance(keySpec.getAlgorithm());
mac.init(keySpec);
String result = new BASE64Encoder().encode(mac.doFinal("bar".getBytes()));

But results are different. What am I missing?

Character encoding perhaps? ->getBytes("UTF-8") Or match to whatever PHP worked with. As is your code would be platform specific. — ficuscr, Jul 03 '14 at 15:38
possible duplicate of [java equivalent to php's hmac-SHA1](http://stackoverflow.com/questions/1609899/java-equivalent-to-phps-hmac-sha1) — uncle Lem, Jul 03 '14 at 15:43
What is the result for both cases? Maybe they are the same, php uses HEX, but on Java you encode using Base64. — Kostas Kryptos, Jul 03 '14 at 15:46

score 0 · Accepted Answer · edited May 23 '17 at 10:32

0

Found solution here: java equivalent to php's hmac-SHA1

The problem was in BASE64Encoder. Use

for (byte b : digest) {
    System.out.format("%02x", b);
}
System.out.println();

or

new BigInteger(digest).toString(16);

instead.

edited May 23 '17 at 10:32

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answered Jul 03 '14 at 15:46

uncle Lem

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hash_hmac analog for Java

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