CryptoJS C/C++ openssl Java AES_256_ecb 加密解密互通

向右看齐 2022-11-04 05:22 269阅读 0赞

# CryptoJS #

效果

![2021030116080123.png][]

解析base64查看原始密文

![20210301161950650.png][]

# Java #

public static byte[] AES_256_ecb_encrypt(byte[] input, byte[] byteKey) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            SecretKey key = new SecretKeySpec(byteKey, "AES");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte[] encrypted = cipher.doFinal(input);
            return encrypted;
        }
    
        public static byte[] AES_256_ecb_decrypt(byte[] input, byte[] byteKey) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            SecretKey key = new SecretKeySpec(byteKey, "AES");
            cipher.init(Cipher.DECRYPT_MODE, key);
            byte[] decrypted = cipher.doFinal(input);
            return decrypted;
        }

@Test
        public void testAES_256_ecb_encrypt() throws Exception {
            String input = "123456";
            String key = "12345678901234567890123456789012";
            byte[] encrypted = CipherUtil.AES_256_ecb_encrypt(input.getBytes(), key.getBytes());
            log.debug(CipherUtil.hexDumpEncoder.encode(encrypted));
            byte[] decrypted = CipherUtil.AES_256_ecb_decrypt(encrypted, key.getBytes());
            String decyptedStr = new String(decrypted);
            log.debug(decyptedStr);
        }

效果

![20210301160913640.png][]

# C（调用openssl crypto库） #

#include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    #include <openssl/evp.h>
    #include <openssl/aes.h>
    
    void printhexDump(const char *buffer, size_t len)
    {
        if (buffer == NULL || len <= 0)
        {
            return;
        }
        printf("0x%x: (len=%d)[", buffer, len);
        for (size_t i = 0; i < len; i++)
        {
            printf("%.2X ", (unsigned char)buffer[i]);
        }
        printf("]\n");
    }
    
    int main()
    {
        unsigned char key[32] = "12345678901234567890123456789012";
        unsigned char *rawData = "123456";
        int rawDataLen = strlen(rawData);
        int encLen = 0;
        int outLen = 0;
    
        unsigned char encData[1024];
        printf("%s\n", rawData);
    
        EVP_CIPHER_CTX *ctx;
        ctx = EVP_CIPHER_CTX_new();
    
        EVP_CipherInit_ex(ctx, EVP_aes_256_ecb(), NULL, key, NULL, AES_ENCRYPT);
        EVP_CipherUpdate(ctx, encData, &outLen, rawData, rawDataLen);
        encLen = outLen;
        printf("%d\n", encLen);
        EVP_CipherFinal(ctx, encData + outLen, &outLen);
        encLen += outLen;
        printf("%d\n", encLen);
        EVP_CIPHER_CTX_free(ctx);
        printhexDump(encData, encLen);
    
        //
        int decLen = 0;
        int outlen = 0;
        unsigned char decData[1024];
        EVP_CIPHER_CTX *ctx2;
        ctx2 = EVP_CIPHER_CTX_new();
        EVP_CipherInit_ex(ctx2, EVP_aes_256_ecb(), NULL, key, NULL, AES_DECRYPT);
        EVP_CipherUpdate(ctx2, decData, &outlen, encData, encLen);
        decLen = outlen;
        EVP_CipherFinal(ctx2, decData + outlen, &outlen);
        decLen += outlen;
        EVP_CIPHER_CTX_free(ctx2);
    
        decData[decLen] = '\0';
        printf("decrypt: %s\n", decData);
        return 0;
    }

效果

![20210301161647507.png][]

# 总结 #

明文：123456

密钥（32字节256位）：12345678901234567890123456789012

经AES加密算法

CryptoJS： \{ mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7 \}

Java： Cipher.getInstance("AES/ECB/PKCS5Padding"))

C openssl：EVP\_aes\_256\_ecb()

得到相同密文十六进制：D7 86 C4 BC 0E C2 7B 22   28 A2 96 24 62 AB 4D 5B

解密得到相同明文：123456

Qt C++可直接采用C openssl库方案。

[2021030116080123.png]: /images/20221023/6f681e9f1c084a6a81587df2f9eb75f9.png
[20210301161950650.png]: /images/20221023/535d8b98678843fd926c5e52c6d2fa02.png
[20210301160913640.png]: /images/20221023/4a19cf9ac9184b1495b123c1aa95a202.png
[20210301161647507.png]: /images/20221023/9e87cb8e486c4fb4a8d4dd6f650d0d72.png