我正在尝试在Python中生成与Java模板相同的Hmac-SHA256签名。但是 Python 脚本生成的输出并不相同。我找不到我的错误。谁能帮我?
爪哇岛
public class Main {
public static void main(String[] args) {
String paramString = "teststring";
calculateSignature(hash(paramString));
}
private static byte[] hash(String paramString)
{
MessageDigest localMessageDigest = MessageDigest.getInstance("SHA-256");
localMessageDigest.update(paramString.getBytes("UTF-8"));
byte[] paramByte = localMessageDigest.digest();
System.out.println("Hash: " + DatatypeConverter.printBase64Binary(paramByte));
return paramByte;
}
public static void calculateSignature(byte[] paramArrayOfByte)
{
String Algor = "HmacSHA256";
Mac localMac = Mac.getInstance(Algor);
byte [] key = "secretkey".getBytes();
localMac.init(new SecretKeySpec(key, Algor));
paramArrayOfByte = localMac.doFinal(paramArrayOfByte);
System.out.println("Signature: " + DatatypeConverter.printBase64Binary(paramArrayOfByte));
}
}
哈希: PIcn4BmkK0RGZ6WHtgASUb7K2ruza/7YCHqSwYiC0RE=
签名: X8V4RA7qaoVGz5K2l61gAXNPuLkAI7NZ9/9d7WnblbA=
蟒
# -*- coding: utf-8 -*-
import hashlib
import base64
import hmac
secretkey = 'secretkey'
stringToSign = "teststring"
def hash(paramstring):
x = base64.b64encode(hashlib.sha256(paramstring).digest())
print('Hash: ' + x)
return x
def calculate_signature(hashvalue):
x = base64.b64encode(hmac.new(secretkey, hashvalue, hashlib.sha256).digest())
print('Signature: ' + x)
calculate_signature(hash(stringToSign))
哈希: PIcn4BmkK0RGZ6WHtgASUb7K2ruza/7YCHqSwYiC0RE=
签名: NE8RtuFsOtafWrwDdlzILMgqCDm2huJ9A3IO6iy44Jc=
问题在于在python代码中,你返回base64编码,但在java中,你只是将其打印为base64编码,但返回没有。
尝试:
private static byte[] hash(String paramString)
{
MessageDigest localMessageDigest = MessageDigest.getInstance("SHA-256");
localMessageDigest.update(paramString.getBytes("UTF-8"));
byte[] paramByte = localMessageDigest.digest();
String base64Binary = DatatypeConverter.printBase64Binary(paramByte);
System.out.println("Hash: " + base64Binary);
return base64Binary.getBytes();
}
或者修改 python 代码为:
def hash(paramstring):
x = hashlib.sha256(paramstring).digest()
return x