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我正在尝试在Golang中实现HOTP(rfc-4226),我正在努力生成有效的HOTP.我可以在java中生成它但由于某种原因我在Golang中的实现是不同的.以下是样本:

public static String constructOTP(final Long counter, final String key)
        throws NoSuchAlgorithmException, DecoderException, InvalidKeyException {
    final Mac mac = Mac.getInstance("HmacSHA512");

    final byte[] binaryKey = Hex.decodeHex(key.toCharArray());

    mac.init(new SecretKeySpec(binaryKey, "HmacSHA512"));
    final byte[] b = ByteBuffer.allocate(8).putLong(counter).array();
    byte[] computedOtp = mac.doFinal(b);

    return new String(Hex.encodeHex(computedOtp));
}

在Go:

func getOTP(counter uint64, key string) string {
    str, err := hex.DecodeString(key)
    if err != nil {
        panic(err)
    }
    h := hmac.New(sha512.New, str)
    bs := make([]byte, 8)
    binary.BigEndian.PutUint64(bs, counter)
    h.Write(bs)
    return base64.StdEncoding.EncodeToString(h.Sum(nil))
}

我认为问题在于Java行:ByteBuffer.allocate(8).putLong(counter).array();生成与Go行不同的字节数组:binary.BigEndian.PutUint64(bs, counter). …