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java - 从java到golang对话的AESBase64加密解密

问题描述

我想将以下代码从 java 重写为 golang。在这里，我主要是在寻找一个可以与byte[] cipheredBytes = Base64.getDecoder().decode((encryptedText));

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.GeneralSecurityException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.KeyException;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import java.util.Base64;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class AESBase64UsedForPartners {
    private final String characterEncoding = "UTF-8";
    private final String cipherTransformation = "AES/CBC/PKCS5Padding";
    private final String aesEncryptionAlgorithm = "AES";
    static String SecretKey = "$sgettng@&Key%";
public String encrypt(String plainText) throws UnsupportedEncodingException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
    byte[] plainTextbytes = plainText.getBytes(characterEncoding);
    byte[] keyBytes = getKeyBytes(SecretKey);
    byte[] str = Base64.getEncoder().encode(encrypt(plainTextbytes, keyBytes, keyBytes));
    return new String(str);
}

public byte[] encrypt(byte[] plainText, byte[] key, byte[] initialVector) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
    Cipher cipher = Cipher.getInstance(cipherTransformation);
    SecretKeySpec secretKeySpec = new SecretKeySpec(key, aesEncryptionAlgorithm);
    IvParameterSpec ivParameterSpec = new IvParameterSpec(initialVector);
    cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivParameterSpec);
    plainText = cipher.doFinal(plainText);
    return plainText;
}

public String decrypt(String encryptedText) throws KeyException, GeneralSecurityException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException, IOException {
    byte[] cipheredBytes = Base64.getDecoder().decode((encryptedText));
    byte[] keyBytes = getKeyBytes(SecretKey);
    return new String(decrypt(cipheredBytes, keyBytes, keyBytes), characterEncoding);
}

public byte[] decrypt(byte[] cipherText, byte[] key, byte[] initialVector) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
    Cipher cipher = Cipher.getInstance(cipherTransformation);
    SecretKeySpec secretKeySpecy = new SecretKeySpec(key, aesEncryptionAlgorithm);
    IvParameterSpec ivParameterSpec = new IvParameterSpec(initialVector);
    cipher.init(Cipher.DECRYPT_MODE, secretKeySpecy, ivParameterSpec);
    cipherText = cipher.doFinal(cipherText);
    return cipherText;
}


private byte[] getKeyBytes(String key) throws UnsupportedEncodingException {
    byte[] keyBytes = new byte[16];
    byte[] parameterKeyBytes = key.getBytes(characterEncoding);
    System.arraycopy(parameterKeyBytes, 0, keyBytes, 0, Math.min(parameterKeyBytes.length, keyBytes.length));
    return keyBytes;
}

public static void main(String a[]) throws GeneralSecurityException, IOException {
    String str = new AESBase64UsedForPartners().encrypt("Text");
    System.out.println("Encrypted---->" + str);
    System.out.println(new AESBase64UsedForPartners().decrypt(str));
}

}

标签： javagoencryptionbase64aes

解决方案

您可以使用encoding/base64包来解码 Base64 编码的字符串：

decoded, err := base64.StdEncoding.DecodeString(s)

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