如何在 Go 中实现 CryptoJS.AES.decrypt

问题内容

我使用 JavaScript 中的 CryptoJS 使用给定密钥进行“简单”AES 解密

var CryptoJS = require('crypto-js');

let encrypted = 'U2FsdGVkX19dGrnVQb3BYZ9SWtQBCt2XZDeWFBEfWoi3qnSHg26aQnADUKjTDtSgpPUDzXc59XrIBsTZp9IRg4dYy9Lo0/GjSVn8qlINhE8NJXozQvUNPJSs6nvWSiivCsh9KHGsWFEusMeTefM9V2hKRpQHnFp5VHDLPgGImjHXOQO71eO4qFoQ3ESqUdnDO94nlTjcJU8AP+GabRMjHP08OVz87uyV4SfvT7AZhAYuOPOumHbJaV5nHz2ouqBZgXR3OK07AUk6V+Faz43BT3Qd2+xGLyz8C+teekmudVhmGlnzvMK/VUs0bNDUttdVVnkz/VbXVOj++07uhDsJoMKzZQYTNLkIl9HnuXDmhKOrLSYs2EYpNrH9T/2ZP3nwqJaI7bbLBCfCpNFGNLY4jyNou4Bl5GEK6sxg0zraUCZTgvfuuvBpKWFcFhPvYf8eJGoI3dOWTRWyRnS6e4j3bg==';
let key = 'KBlgcIOrad7EYpiz9LNNTMSg98QoqSVK';

var decrypted = CryptoJS.AES.decrypt(encrypted, key);

let data = decrypted.toString(CryptoJS.enc.Utf8);

console.log(data);

我试图在 Go (Golang) 中解密该数据，但失败了。我对 AES 一无所知，这是我到目前为止的代码

package main

import (
    "crypto/aes"
    "crypto/cipher"
    "encoding/base64"
    "fmt"
)

func main() {
    encrypted := "U2FsdGVkX19dGrnVQb3BYZ9SWtQBCt2XZDeWFBEfWoi3qnSHg26aQnADUKjTDtSgpPUDzXc59XrIBsTZp9IRg4dYy9Lo0/GjSVn8qlINhE8NJXozQvUNPJSs6nvWSiivCsh9KHGsWFEusMeTefM9V2hKRpQHnFp5VHDLPgGImjHXOQO71eO4qFoQ3ESqUdnDO94nlTjcJU8AP+GabRMjHP08OVz87uyV4SfvT7AZhAYuOPOumHbJaV5nHz2ouqBZgXR3OK07AUk6V+Faz43BT3Qd2+xGLyz8C+teekmudVhmGlnzvMK/VUs0bNDUttdVVnkz/VbXVOj++07uhDsJoMKzZQYTNLkIl9HnuXDmhKOrLSYs2EYpNrH9T/2ZP3nwqJaI7bbLBCfCpNFGNLY4jyNou4Bl5GEK6sxg0zraUCZTgvfuuvBpKWFcFhPvYf8eJGoI3dOWTRWyRnS6e4j3bg=="
    key := "KBlgcIOrad7EYpiz9LNNTMSg98QoqSVK"

    e, _ := base64.StdEncoding.DecodeString(encrypted)
    k := []byte(key)

    dst, err := decryptAES(e, k)
    if err != nil {
        panic(err)
    }

    fmt.Println(string(dst))
}

func decryptAES(ciphertext []byte, key []byte) ([]byte, error) {
    block, err := aes.NewCipher(key)
    if err != nil {
        return nil, err
    }

    if len(ciphertext) < aes.BlockSize {
        return nil, fmt.Errorf("ciphertext is too short")
    }

    iv := ciphertext[:aes.BlockSize]
    ciphertext = ciphertext[aes.BlockSize:]

    stream := cipher.NewCFBDecrypter(block, iv)
    plaintext := make([]byte, len(ciphertext))
    stream.XORKeyStream(plaintext, ciphertext)

    return plaintext, nil
}

结果：�9�����ff�������������jTY:���SV�PZLDw%�z��0���&� ��j@'��_H��0+����b�8�b}�;Y���d��0�^P얿L�aC�3�2�m�� d׺�h� -׸��%Z(0��c�v�r�:�=�>}���b��n������g�lu}������&�3� .�%|M��fxdGW27z�D��J���"(�[D�+<��n�z�4:����� ��iZs��ix��G��$��.=��3J��5{"g��#z ����Z��#����@����Xs��#��ZR;����VI ������ ��w�X/�bp�r ��

快速尝试：https://goplay.tools/snippet/QooAajJ4ky0

请帮助我使用 Go 解密该数据或修复我的代码。谢谢<3

正确答案

正如@Topaco在评论中明确提到的那样，

根据CryptoJS 文档，默认模式为CBC 。所以你的密文是用CBC模式加密的。

但是在您的go代码中，您使用了CFB模式，通过使用cipher.NewCFBDecrypter(block, iv)来解密密文，这显然不是正确的模式。

您必须使用 NewCFBDecrypter /pkg.go.dev/crypto/cipher#NewCB​​CDecrypter" rel="nofollow noreferrer">NewCB​​CDecrypter

我可以使用 https://www.php.cn/link/2c6ee860dfb322d0fc5dbbf5a2aa0b39 包。

<code>package main

import (
    "fmt"
    "github.com/Luzifer/go-openssl"
)

func main() {
    data := "U2FsdGVkX19dGrnVQb3BYZ9SWtQBCt2XZDeWFBEfWoi3qnSHg26aQnADUKjTDtSgpPUDzXc59XrIBsTZp9IRg4dYy9Lo0/GjSVn8qlINhE8NJXozQvUNPJSs6nvWSiivCsh9KHGsWFEusMeTefM9V2hKRpQHnFp5VHDLPgGImjHXOQO71eO4qFoQ3ESqUdnDO94nlTjcJU8AP+GabRMjHP08OVz87uyV4SfvT7AZhAYuOPOumHbJaV5nHz2ouqBZgXR3OK07AUk6V+Faz43BT3Qd2+xGLyz8C+teekmudVhmGlnzvMK/VUs0bNDUttdVVnkz/VbXVOj++07uhDsJoMKzZQYTNLkIl9HnuXDmhKOrLSYs2EYpNrH9T/2ZP3nwqJaI7bbLBCfCpNFGNLY4jyNou4Bl5GEK6sxg0zraUCZTgvfuuvBpKWFcFhPvYf8eJGoI3dOWTRWyRnS6e4j3bg=="
    secret := "KBlgcIOrad7EYpiz9LNNTMSg98QoqSVK"

    o := openssl.New()

    dec, err := o.DecryptBytes(secret, []byte(data))
    if err != nil {
        fmt.Printf("An error occurred: %s\n", err)
    }

    fmt.Printf("Decrypted text: %s\n", string(dec))
}

</code>

输出

Decrypted text: [{"file":"https://eno.tendoloads.com/_v6/71f87b4028d27b3ba749bd2029f3248245618a740ca81a9a9863f257784436f85c939482f4d306945639b935dc612f232173cae4f207297dea8798f69741cdadcf03986938ae645355b02ac49101bd99d26dbcacac3e6ab00b678324a21474728d09a70cb4b5086fbc36943efb9f1695c522b23382b639d8f473c8ce9a528151/master.m3u8","type":"hls"}]

或者如果你想在CryptoJS中使用CFB，那么你必须明确指定模式。

var decrypted = CryptoJS.AES.decrypt(encrypted, key, {
  mode: CryptoJS.mode.CFB,
});

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