java相当于php的hmac-SHA1

发布于 2024-08-08 13:49:52 字数 683 浏览 8 评论 0原文

我正在寻找与此 php 调用等效的 java:

hash_hmac('sha1', "test", "secret")

我尝试了这个,使用 java.crypto.Mac,但两者不一致:

String mykey = "secret";
String test = "test";
try {
    Mac mac = Mac.getInstance("HmacSHA1");
    SecretKeySpec secret = new SecretKeySpec(mykey.getBytes(),"HmacSHA1");
    mac.init(secret);
    byte[] digest = mac.doFinal(test.getBytes());
    String enc = new String(digest);
    System.out.println(enc);  
} catch (Exception e) {
    System.out.println(e.getMessage());
}

key = "secret" 和 test = "test" 的输​​出似乎不匹配。

I'm looking for a java equivalent to this php call:

hash_hmac('sha1', "test", "secret")

I tried this, using java.crypto.Mac, but the two do not agree:

String mykey = "secret";
String test = "test";
try {
    Mac mac = Mac.getInstance("HmacSHA1");
    SecretKeySpec secret = new SecretKeySpec(mykey.getBytes(),"HmacSHA1");
    mac.init(secret);
    byte[] digest = mac.doFinal(test.getBytes());
    String enc = new String(digest);
    System.out.println(enc);  
} catch (Exception e) {
    System.out.println(e.getMessage());
}

The outputs with key = "secret" and test = "test" do not seem to match.

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评论(7

葮薆情 2024-08-15 13:49:52

事实上他们确实同意。
正如 Hans Doggen 已经指出的那样,PHP 使用十六进制表示法输出消息摘要,除非您将原始输出参数设置为 true。
如果您想在 Java 中使用相同的表示法,您可以使用类似的方法

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

来相应地格式化输出。

In fact they do agree.
As Hans Doggen already noted PHP outputs the message digest using hexadecimal notation unless you set the raw output parameter to true.
If you want to use the same notation in Java you can use something like

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

to format the output accordingly.

感性 2024-08-15 13:49:52

你可以在 Java 中尝试一下:

private static String computeSignature(String baseString, String keyString) throws GeneralSecurityException, UnsupportedEncodingException {

    SecretKey secretKey = null;

    byte[] keyBytes = keyString.getBytes();
    secretKey = new SecretKeySpec(keyBytes, "HmacSHA1");

    Mac mac = Mac.getInstance("HmacSHA1");

    mac.init(secretKey);

    byte[] text = baseString.getBytes();

    return new String(Base64.encodeBase64(mac.doFinal(text))).trim();
}

You can try this in Java:

private static String computeSignature(String baseString, String keyString) throws GeneralSecurityException, UnsupportedEncodingException {

    SecretKey secretKey = null;

    byte[] keyBytes = keyString.getBytes();
    secretKey = new SecretKeySpec(keyBytes, "HmacSHA1");

    Mac mac = Mac.getInstance("HmacSHA1");

    mac.init(secretKey);

    byte[] text = baseString.getBytes();

    return new String(Base64.encodeBase64(mac.doFinal(text))).trim();
}
水晶透心 2024-08-15 13:49:52

这是我的实现:

        String hmac = "";

    Mac mac = Mac.getInstance("HmacSHA1");
    SecretKeySpec secret = new SecretKeySpec(llave.getBytes(), "HmacSHA1");
    mac.init(secret);
    byte[] digest = mac.doFinal(cadena.getBytes());
    BigInteger hash = new BigInteger(1, digest);
    hmac = hash.toString(16);

    if (hmac.length() % 2 != 0) {
        hmac = "0" + hmac;
    }

    return hmac;

This is my implementation :

        String hmac = "";

    Mac mac = Mac.getInstance("HmacSHA1");
    SecretKeySpec secret = new SecretKeySpec(llave.getBytes(), "HmacSHA1");
    mac.init(secret);
    byte[] digest = mac.doFinal(cadena.getBytes());
    BigInteger hash = new BigInteger(1, digest);
    hmac = hash.toString(16);

    if (hmac.length() % 2 != 0) {
        hmac = "0" + hmac;
    }

    return hmac;
各空 2024-08-15 13:49:52

在我看来,PHP 对 Java 生成的字节使用十六进制表示法 (1a = 26) - 但我没有检查整个表达式。

如果通过页面上的方法运行字节数组,会发生什么情况?

Seems to me that PHP uses HEX notation for the bytes that Java produces (1a = 26) - but I didn't check the whole expression.

What happens if you run the byte array through the method on this page?

记忆で 2024-08-15 13:49:52

我的 HmacMD5 实现 - 只需将算法更改为 HmacSHA1:

SecretKeySpec keySpec = new SecretKeySpec("secretkey".getBytes(), "HmacMD5");
Mac mac = Mac.getInstance("HmacMD5");
mac.init(keySpec);
byte[] hashBytes = mac.doFinal("text2crypt".getBytes());
return Hex.encodeHexString(hashBytes);

My implementation for HmacMD5 - just change algorithm to HmacSHA1:

SecretKeySpec keySpec = new SecretKeySpec("secretkey".getBytes(), "HmacMD5");
Mac mac = Mac.getInstance("HmacMD5");
mac.init(keySpec);
byte[] hashBytes = mac.doFinal("text2crypt".getBytes());
return Hex.encodeHexString(hashBytes);
彩虹直至黑白 2024-08-15 13:49:52

这样我就可以得到与 php 中使用 hash_hmac 得到的完全相同的字符串

String result;

try {
        String data = "mydata";
        String key = "myKey";
        // Get an hmac_sha1 key from the raw key bytes
        byte[] keyBytes = key.getBytes();
        SecretKeySpec signingKey = new SecretKeySpec(keyBytes, "HmacSHA1");

        // Get an hmac_sha1 Mac instance and initialize with the signing key
        Mac mac = Mac.getInstance("HmacSHA1");
        mac.init(signingKey);

        // Compute the hmac on input data bytes
        byte[] rawHmac = mac.doFinal(data.getBytes());

        // Convert raw bytes to Hex
        byte[] hexBytes = new Hex().encode(rawHmac);

        //  Covert array of Hex bytes to a String
        result = new String(hexBytes, "ISO-8859-1");
        out.println("MAC : " + result);
}
catch (Exception e) {

}

This way I could get the exact same string as I was getting with hash_hmac in php

String result;

try {
        String data = "mydata";
        String key = "myKey";
        // Get an hmac_sha1 key from the raw key bytes
        byte[] keyBytes = key.getBytes();
        SecretKeySpec signingKey = new SecretKeySpec(keyBytes, "HmacSHA1");

        // Get an hmac_sha1 Mac instance and initialize with the signing key
        Mac mac = Mac.getInstance("HmacSHA1");
        mac.init(signingKey);

        // Compute the hmac on input data bytes
        byte[] rawHmac = mac.doFinal(data.getBytes());

        // Convert raw bytes to Hex
        byte[] hexBytes = new Hex().encode(rawHmac);

        //  Covert array of Hex bytes to a String
        result = new String(hexBytes, "ISO-8859-1");
        out.println("MAC : " + result);
}
catch (Exception e) {

}
少女情怀诗 2024-08-15 13:49:52

还没有测试过,但是试试这个:

        BigInteger hash = new BigInteger(1, digest);
        String enc = hash.toString(16);
        if ((enc.length() % 2) != 0) {
            enc = "0" + enc;
        }

这是我的方法的快照,它使java的md5和sha1与php匹配。

Haven't tested it, but try this:

        BigInteger hash = new BigInteger(1, digest);
        String enc = hash.toString(16);
        if ((enc.length() % 2) != 0) {
            enc = "0" + enc;
        }

This is snapshot from my method that makes java's md5 and sha1 match php.

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