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Java javax.crypto和PHP openssl_decrypt不相同

[英]Java javax.crypto and PHP openssl_decrypt is not identical

我正在將Java解密程序代碼移植到PHP。 我有3個文件:

  • crypto.data-使用AES / CBC / NoPadding(128)算法加密的數據。
  • aes.key-這是秘密密鑰。
  • initialize.vector-它是初始化向量

看到這里鏈接

我在Java中使用javax.crypto包,使用AES / CBC / NoPadding(128)算法來解密數據。 在PHP中,我使用openssl擴展

PHP版本7.1.0 PHP信息(openssl):

  • OpenSSL庫版本LibreSSL 2.4.4
  • OpenSSL標頭版本LibreSSL 2.4.4

我的代碼示例:

我的Java代碼:

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.io.*;
import java.nio.file.Files;
import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

public class Main {
    public static void main(String[] args) throws IOException, InvalidAlgorithmParameterException, InvalidKeyException, NoSuchPaddingException, NoSuchAlgorithmException, BadPaddingException, IllegalBlockSizeException {
        File AesKeyFile = new File("./Cipher2PHP/aes.key");
        File InitializationVectorFile = new File("./Cipher2PHP/initialization.vector");
        File EncryptedDataFile = new File("./Cipher2PHP/encrypted.data");
        byte[] AesKeyData = Files.readAllBytes(AesKeyFile.toPath());
        byte[] InitializationVectorData = Files.readAllBytes(InitializationVectorFile.toPath());
        byte[] EncryptedData = Files.readAllBytes(EncryptedDataFile.toPath());

        Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
        SecretKeySpec keySpec = new SecretKeySpec(AesKeyData, "AES");
        cipher.init(Cipher.DECRYPT_MODE, keySpec, new IvParameterSpec(InitializationVectorData));

        byte[] result = cipher.doFinal(EncryptedData);
        String decrypted = new String(result);

        System.out.printf("Your data: %s\n", decrypted);
    }
}

我的可移植PHP代碼

<?php
$AesKeyData = file_get_contents('./Cipher2PHP/aes.key');
$InitializationVectorData = file_get_contents('./Cipher2PHP/initialization.vector');
$EncryptedData = file_get_contents('./Cipher2PHP/encrypted.data');
$decrypted = openssl_decrypt(
    $EncryptedData,
    'AES-128-CBC',
    $AesKeyData,
    OPENSSL_NO_PADDING,
    $InitializationVectorData
);
printf("Your data: %s\n", $decrypted);

Java代碼根據需要工作。 PHP代碼不匹配。

Java代碼輸出:

Your data: My very secure data. Very secure
Process finished with exit code 0

PHP代碼輸出:

Your data: �j��2��䈤�n�h�/sEH�,/-��-�^[
Process finished with exit code 0

Base64編碼的數據:

PHP:

Base64 AES Key:                 "Kl/LF5HSL7YCRbPYNp7QssJzcVY/vx88nt9rEYJaXQo="
Base64 InitializationVector:    "QXF/8HO4te38LhhuFP9+hA=="
Base64 EncryptedData:           "eA1w+ysqsHIdaXsQRSgt9nLPDj7ILcqyZdCW3wDBcy0="
Decrypted Result:               "xmqJ0TKgx+SIpP1u/hNoyS9zRUjEAAEsLy251S2hXls="

Java的:

Base64 AES Key:                 "Kl/LF5HSL7YCRbPYNp7QssJzcVY/vx88nt9rEYJaXQo="
Base64 InitializationVector:    "QXF/8HO4te38LhhuFP9+hA=="
Base64 EncryptedData:           "eA1w+ysqsHIdaXsQRSgt9nLPDj7ILcqyZdCW3wDBcy0="
Decrypted Result:               "TXkgdmVyeSBzZWN1cmUgZGF0YS4gVmVyeSBzZWN1cmU="

控制台中的文件:

./Cipher2PHP mac$ file -I *
aes.key:               application/octet-stream; charset=binary
initialization.vector: application/octet-stream; charset=binary
encrypted.data:        application/octet-stream; charset=binary
./Cipher2PHP mac$ xxd  aes.key 
0000000: 2a5f cb17 91d2 2fb6 0245 b3d8 369e d0b2  *_..../..E..6...
0000010: c273 7156 3fbf 1f3c 9edf 6b11 825a 5d0a  .sqV?..<..k..Z].
./Cipher2PHP mac$ xxd  initialization.vector 
0000000: 4171 7ff0 73b8 b5ed fc2e 186e 14ff 7e84  Aq..s......n..~.
./Cipher2PHP mac$ xxd  encrypted.data 
0000000: 780d 70fb 2b2a b072 1d69 7b10 4528 2df6  x.p.+*.r.i{.E(-.
0000010: 72cf 0e3e c82d cab2 65d0 96df 00c1 732d  r..>.-..e.....s-
./Cipher2PHP mac$ xxd -b aes.key 
0000000: 00101010 01011111 11001011 00010111 10010001 11010010  *_....
0000006: 00101111 10110110 00000010 01000101 10110011 11011000  /..E..
000000c: 00110110 10011110 11010000 10110010 11000010 01110011  6....s
0000012: 01110001 01010110 00111111 10111111 00011111 00111100  qV?..<
0000018: 10011110 11011111 01101011 00010001 10000010 01011010  ..k..Z
000001e: 01011101 00001010                                      ].
./Cipher2PHP mac$ xxd -b initialization.vector 
0000000: 01000001 01110001 01111111 11110000 01110011 10111000  Aq..s.
0000006: 10110101 11101101 11111100 00101110 00011000 01101110  .....n
000000c: 00010100 11111111 01111110 10000100                    ..~.
./Cipher2PHP mac$ xxd -b encrypted.data 
0000000: 01111000 00001101 01110000 11111011 00101011 00101010  x.p.+*
0000006: 10110000 01110010 00011101 01101001 01111011 00010000  .r.i{.
000000c: 01000101 00101000 00101101 11110110 01110010 11001111  E(-.r.
0000012: 00001110 00111110 11001000 00101101 11001010 10110010  .>.-..
0000018: 01100101 11010000 10010110 11011111 00000000 11000001  e.....
000001e: 01110011 00101101   

在Java中,要使用的AES版本(128、192或256位)由您提供的密鑰的長度確定,該長度必須恰好是這些長度之一。

在PHP中,您可以在openssl_decryptopenssl_encrypt的method參數中明確指定要使用的AES版本,例如“ aes-128-cbc”。 然后,PHP將截斷或以零字節擴展您提供的密鑰,使其為所需的長度。

您使用的是32字節(256位)密鑰,因此您的Java代碼使用的是AES-256。 但是,您的PHP代碼指定了“ AES-128-CBC”,因此您使用的是其他版本。

要使PHP版本的行為類似於Java版本,請openssl_decrypt的調用中的方法字符串更改為'aes-256-cbc'

為了使Java版本的行為類似於PHP版本(我不希望這樣做,但是為了完整起見我將其包括在內),請復制密鑰的前16個字節,並且僅在創建SecretKeySpec對象時使用它們。

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