HMAC-SHA256签名计算算法

发布于 2024-11-30 08:46:50 字数 1015 浏览 5 评论 0原文

我正在尝试使用 HMAC-SHA256 算法创建签名,这是我的代码。 我使用的是 US ASCII 编码。

final Charset asciiCs = Charset.forName("US-ASCII");
final Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
final SecretKeySpec secret_key = new javax.crypto.spec.SecretKeySpec(asciiCs.encode("key").array(), "HmacSHA256");
sha256_HMAC.init(secret_key);
final byte[] mac_data = sha256_HMAC.doFinal(asciiCs.encode("The quick brown fox jumps over the lazy dog").array());
String result = "";
for (final byte element : mac_data)
{
    result += Integer.toString((element & 0xff) + 0x100, 16).substring(1);
}
System.out.println("Result:[" + result + "]");

我从上面的代码得到的结果是:

f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8

这与 wiki 中显示的结果相同,

HMAC_SHA256("key", "The quick brown fox jumps over the lazy dog") = 0x f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8

除了 0x

如果我做的一切正确或者我可以改进我的代码,我正在寻找想法/评论。

I am trying to create a signature using the HMAC-SHA256 algorithm and this is my code.
I am using US ASCII encoding.

final Charset asciiCs = Charset.forName("US-ASCII");
final Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
final SecretKeySpec secret_key = new javax.crypto.spec.SecretKeySpec(asciiCs.encode("key").array(), "HmacSHA256");
sha256_HMAC.init(secret_key);
final byte[] mac_data = sha256_HMAC.doFinal(asciiCs.encode("The quick brown fox jumps over the lazy dog").array());
String result = "";
for (final byte element : mac_data)
{
    result += Integer.toString((element & 0xff) + 0x100, 16).substring(1);
}
System.out.println("Result:[" + result + "]");

The result that I am getting from the above code is:

f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8

This is same as to that of shown in the wiki

HMAC_SHA256("key", "The quick brown fox jumps over the lazy dog") = 0x f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8

except for the 0x.

I am looking for ideas/comments if I am doing everything right or may be I can improve my code.

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评论(9

没企图 2024-12-07 08:46:50

这是我的解决方案:

public static String encode(String key, String data) throws Exception {
  Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
  SecretKeySpec secret_key = new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA256");
  sha256_HMAC.init(secret_key);

  return Hex.encodeHexString(sha256_HMAC.doFinal(data.getBytes("UTF-8")));
}

public static void main(String [] args) throws Exception {
  System.out.println(encode("key", "The quick brown fox jumps over the lazy dog"));
}

或者您可以返回以 Base64 编码的哈希值:

Base64.encodeBase64String(sha256_HMAC.doFinal(data.getBytes("UTF-8")));

十六进制输出符合预期:

f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8

Here is my solution:

public static String encode(String key, String data) throws Exception {
  Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
  SecretKeySpec secret_key = new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA256");
  sha256_HMAC.init(secret_key);

  return Hex.encodeHexString(sha256_HMAC.doFinal(data.getBytes("UTF-8")));
}

public static void main(String [] args) throws Exception {
  System.out.println(encode("key", "The quick brown fox jumps over the lazy dog"));
}

Or you can return the hash encoded in Base64:

Base64.encodeBase64String(sha256_HMAC.doFinal(data.getBytes("UTF-8")));

The output in hex is as expected:

f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8
穿透光 2024-12-07 08:46:50

0x 只是表示它后面的字符代表一个十六进制字符串。

0x1A == 1Ah == 26 == 1A

所以0x只是为了明确输出的格式,无需担心。

The 0x just denotes that the characters after it represent a hex string.

0x1A == 1Ah == 26 == 1A

So the 0x is just to clarify what format the output is in, no need to worry about it.

一个人的旅程 2024-12-07 08:46:50

如果您使用的是 Guava,其最新版本现在允许您使用

 Hashing.hmacSha256()

使用此功能的一个示例:

String hash = Hashing.hmacSha256("mykey".getBytes(StandardCharsets.UTF_8)).hashString("my_message", StandardCharsets.UTF_8).toString()

此处有更多文档:https://guava.dev/releases/23.0/api/docs/com/google/common/hash/Hashing.html#hmacSha256-byte:A-

If you're using Guava, its latest release now lets you use

 Hashing.hmacSha256()

One example of using this:

String hash = Hashing.hmacSha256("mykey".getBytes(StandardCharsets.UTF_8)).hashString("my_message", StandardCharsets.UTF_8).toString()

Further documentation here: https://guava.dev/releases/23.0/api/docs/com/google/common/hash/Hashing.html#hmacSha256-byte:A-

旧城空念 2024-12-07 08:46:50

您在那里得到的答案是正确的。上面代码中的一件小事是,您需要先 init(key) ,然后才能调用 doFinal()

    final Charset charSet = Charset.forName("US-ASCII");
    final Mac sha256_HMAC = Mac.getInstance("HmacSHA256");

    final SecretKeySpec secret_key = new javax.crypto.spec.SecretKeySpec(charSet.encode("key").array(), "HmacSHA256");
    try {
        sha256_HMAC.init(secret_key);
    } catch (InvalidKeyException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    ...

The answer that you got there is correct. One minor thing in the code above, you need to init(key) before you can call doFinal()

    final Charset charSet = Charset.forName("US-ASCII");
    final Mac sha256_HMAC = Mac.getInstance("HmacSHA256");

    final SecretKeySpec secret_key = new javax.crypto.spec.SecretKeySpec(charSet.encode("key").array(), "HmacSHA256");
    try {
        sha256_HMAC.init(secret_key);
    } catch (InvalidKeyException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    ...
尛丟丟 2024-12-07 08:46:50

这对我来说工作正常,

我添加了依赖

compile 'commons-codec:commons-codec:1.9'

项参考: http://mvnrepository。 com/artifact/commons-codec/commons-codec/1.9

我的函数

public String encode(String key, String data) {
    try {

        Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
        SecretKeySpec secret_key = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "HmacSHA256");
        sha256_HMAC.init(secret_key);

        return Hex.encodeHexString(sha256_HMAC.doFinal(data.getBytes(StandardCharsets.UTF_8)));

    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    
    return null;
}

This is working fine for me

I have add dependency

compile 'commons-codec:commons-codec:1.9'

ref: http://mvnrepository.com/artifact/commons-codec/commons-codec/1.9

my function

public String encode(String key, String data) {
    try {

        Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
        SecretKeySpec secret_key = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "HmacSHA256");
        sha256_HMAC.init(secret_key);

        return Hex.encodeHexString(sha256_HMAC.doFinal(data.getBytes(StandardCharsets.UTF_8)));

    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    
    return null;
}
一笑百媚生 2024-12-07 08:46:50

试试这个

抱歉迟到了,我已经尝试了上述所有答案,但没有一个给我正确的价值,在做了很多研发之后发现了一个简单的方法,可以给我准确的价值。

  1. 在您的类中声明此方法

    private String hmacSha(String KEY, String VALUE, String SHA_TYPE) {
    尝试 {
        SecretKeySpec签名Key = new SecretKeySpec(KEY.getBytes("UTF-8"), SHA_TYPE);
        Mac mac = Mac.getInstance(SHA_TYPE);
        mac.init(签名密钥);
        byte[] rawHmac = mac.doFinal(VALUE.getBytes("UTF-8"));
        byte[] hexArray = {(字节)'0', (字节)'1', (字节)'2', (字节)'3', (字节)'4', (字节)'5', (字节) )'6',(字节)'7',(字节)'8',(字节)'9',(字节)'a',(字节)'b',(字节)'c',(字节) 'd',(字节)'e', (字节)'f'};
        byte[] hexChars = 新字节[rawHmac.length * 2];
        for ( int j = 0; j < rawHmac.length; j++ ) {
            int v = rawHmac[j] & 0xFF;
            hexChars[j * 2] = hexArray[v>>>> 4];
            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
        }
        返回新字符串(hexChars);
    }
    捕获(异常前){
        抛出新的 RuntimeException(ex);
    }
    

    }

  2. 像这样使用

    Log.e("TAG", "onCreate: "+hmacSha("key","text","HmacSHA256"));
    

Verification

1.Android studio 输出
Android studio 输出
2. 在线 HMAC 生成器输出(在线生成器请访问此处
输入图像描述这里

Try this

Sorry for being late, I have tried all above answers but none of them is giving me correct value, After doing the lot of R&D I have found a simple way that gives me exact value.

  1. Declare this method in your class

    private String hmacSha(String KEY, String VALUE, String SHA_TYPE) {
    try {
        SecretKeySpec signingKey = new SecretKeySpec(KEY.getBytes("UTF-8"), SHA_TYPE);
        Mac mac = Mac.getInstance(SHA_TYPE);
        mac.init(signingKey);
        byte[] rawHmac = mac.doFinal(VALUE.getBytes("UTF-8"));
        byte[] hexArray = {(byte)'0', (byte)'1', (byte)'2', (byte)'3', (byte)'4', (byte)'5', (byte)'6', (byte)'7', (byte)'8', (byte)'9', (byte)'a', (byte)'b', (byte)'c', (byte)'d', (byte)'e', (byte)'f'};
        byte[] hexChars = new byte[rawHmac.length * 2];
        for ( int j = 0; j < rawHmac.length; j++ ) {
            int v = rawHmac[j] & 0xFF;
            hexChars[j * 2] = hexArray[v >>> 4];
            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
        }
        return new String(hexChars);
    }
    catch (Exception ex) {
        throw new RuntimeException(ex);
    }
    

    }

  2. Use this like

    Log.e("TAG", "onCreate: "+hmacSha("key","text","HmacSHA256"));
    

Verification

1.Android studio output
Android studio output
2. Online HMAC generator Output(Visit here for Online Genrator)
enter image description here

怕倦 2024-12-07 08:46:50

用于生成编码 (HMAC-x) 签名的 Java 简单代码。 (尝试使用 Java-8 和 Eclipse)

import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

import com.sun.org.apache.xml.internal.security.utils.Base64;

/**
 * Encryption class to show how to generate encoded(HMAC-x) signatures.
 * 
 */
public class Encryption {

    public static void main(String args[]) {

        String message = "This is my message.";
        String key = "your_key";
        String algorithm = "HmacMD5";  // OPTIONS= HmacSHA512, HmacSHA256, HmacSHA1, HmacMD5

        try {

            // 1. Get an algorithm instance.
            Mac sha256_hmac = Mac.getInstance(algorithm);

            // 2. Create secret key.
            SecretKeySpec secret_key = new SecretKeySpec(key.getBytes("UTF-8"), algorithm);

            // 3. Assign secret key algorithm.
            sha256_hmac.init(secret_key);

            // 4. Generate Base64 encoded cipher string.
            String hash = Base64.encode(sha256_hmac.doFinal(message.getBytes("UTF-8")));

            // You can use any other encoding format to get hash text in that encoding.
            System.out.println(hash);

            /**
             * Here are the outputs for given algorithms:-
             * 
             * HmacMD5 = hpytHW6XebJ/hNyJeX/A2w==
             * HmacSHA1 = CZbtauhnzKs+UkBmdC1ssoEqdOw=
             * HmacSHA256 =gCZJBUrp45o+Z5REzMwyJrdbRj8Rvfoy33ULZ1bySXM=
             * HmacSHA512 = OAqi5yEbt2lkwDuFlO6/4UU6XmU2JEDuZn6+1pY4xLAq/JJGSNfSy1if499coG1K2Nqz/yyAMKPIx9C91uLj+w==
             */

        } catch (NoSuchAlgorithmException e) {

            e.printStackTrace();

        } catch (UnsupportedEncodingException e) {

            e.printStackTrace();

        } catch (InvalidKeyException e) {

            e.printStackTrace();

        }

    }

}

注意:您可以使用任何其他算法,并可以尝试生成 HmacMD5HmacSHA1HmacSHA256HmacSHA512签名。

Java simple code to generate encoded(HMAC-x) signatures. (Tried using Java-8 and Eclipse)

import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

import com.sun.org.apache.xml.internal.security.utils.Base64;

/**
 * Encryption class to show how to generate encoded(HMAC-x) signatures.
 * 
 */
public class Encryption {

    public static void main(String args[]) {

        String message = "This is my message.";
        String key = "your_key";
        String algorithm = "HmacMD5";  // OPTIONS= HmacSHA512, HmacSHA256, HmacSHA1, HmacMD5

        try {

            // 1. Get an algorithm instance.
            Mac sha256_hmac = Mac.getInstance(algorithm);

            // 2. Create secret key.
            SecretKeySpec secret_key = new SecretKeySpec(key.getBytes("UTF-8"), algorithm);

            // 3. Assign secret key algorithm.
            sha256_hmac.init(secret_key);

            // 4. Generate Base64 encoded cipher string.
            String hash = Base64.encode(sha256_hmac.doFinal(message.getBytes("UTF-8")));

            // You can use any other encoding format to get hash text in that encoding.
            System.out.println(hash);

            /**
             * Here are the outputs for given algorithms:-
             * 
             * HmacMD5 = hpytHW6XebJ/hNyJeX/A2w==
             * HmacSHA1 = CZbtauhnzKs+UkBmdC1ssoEqdOw=
             * HmacSHA256 =gCZJBUrp45o+Z5REzMwyJrdbRj8Rvfoy33ULZ1bySXM=
             * HmacSHA512 = OAqi5yEbt2lkwDuFlO6/4UU6XmU2JEDuZn6+1pY4xLAq/JJGSNfSy1if499coG1K2Nqz/yyAMKPIx9C91uLj+w==
             */

        } catch (NoSuchAlgorithmException e) {

            e.printStackTrace();

        } catch (UnsupportedEncodingException e) {

            e.printStackTrace();

        } catch (InvalidKeyException e) {

            e.printStackTrace();

        }

    }

}

NOTE: You can use any other Algorithms and can try generating HmacMD5, HmacSHA1, HmacSHA256, HmacSHA512 signatures.

最笨的告白 2024-12-07 08:46:50

如果您有机会在这里找到如何计算 HMAC-SHA256 的解决方案,但您会遇到如下异常:

java.lang.NoSuchMethodError:没有静态方法
编码HexString([B)Ljava/lang/String;在课堂上
Lorg/apache/commons/编解码器/二进制/十六进制;或其超类
(“org.apache.commons.codec.binary.Hex”的声明出现在
/system/framework/org.apache.http.legacy.boot.jar)

然后使用:

public static String encode(String key, String data) {
    try {
        Mac hmac = Mac.getInstance("HmacSHA256");
        SecretKeySpec secret_key = new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA256");
        hmac.init(secret_key);
        return new String(Hex.encodeHex(hmac.doFinal(data.getBytes("UTF-8"))));
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

If but any chance you found a solution how to calculate HMAC-SHA256 here, but you're getting an exception like this one:

java.lang.NoSuchMethodError: No static method
encodeHexString([B)Ljava/lang/String; in class
Lorg/apache/commons/codec/binary/Hex; or its super classes
(declaration of 'org.apache.commons.codec.binary.Hex' appears in
/system/framework/org.apache.http.legacy.boot.jar)

Then use:

public static String encode(String key, String data) {
    try {
        Mac hmac = Mac.getInstance("HmacSHA256");
        SecretKeySpec secret_key = new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA256");
        hmac.init(secret_key);
        return new String(Hex.encodeHex(hmac.doFinal(data.getBytes("UTF-8"))));
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}
你列表最软的妹 2024-12-07 08:46:50

这是我的解决方案:

public String HMAC_SHA256(String secret, String message)
{
    String hash="";
    try{
        Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
        SecretKeySpec secret_key = new SecretKeySpec(secret.getBytes(), "HmacSHA256");
        sha256_HMAC.init(secret_key);

        hash = Base64.encodeToString(sha256_HMAC.doFinal(message.getBytes()), Base64.DEFAULT);
    }catch (Exception e)
    {

    }
    return hash.trim();
}

Here is my solution:

public String HMAC_SHA256(String secret, String message)
{
    String hash="";
    try{
        Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
        SecretKeySpec secret_key = new SecretKeySpec(secret.getBytes(), "HmacSHA256");
        sha256_HMAC.init(secret_key);

        hash = Base64.encodeToString(sha256_HMAC.doFinal(message.getBytes()), Base64.DEFAULT);
    }catch (Exception e)
    {

    }
    return hash.trim();
}
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