英文:
AESBase64 encryption decryption from java to golang conversation
问题
我可以帮你将以下Java代码重写为Go语言：
package main
import (
"crypto/aes"
"crypto/cipher"
"encoding/base64"
"fmt"
)
func main() {
encryptedText := "encrypted text"
secretKey := "$sgettng@&Key%"
decryptedText, err := decrypt(encryptedText, secretKey)
if err != nil {
fmt.Println("Decryption error:", err)
return
}
fmt.Println("Decrypted text:", decryptedText)
}
func decrypt(encryptedText string, secretKey string) (string, error) {
cipheredBytes, err := base64.StdEncoding.DecodeString(encryptedText)
if err != nil {
return "", err
}
key := []byte(secretKey)
block, err := aes.NewCipher(key)
if err != nil {
return "", err
}
iv := make([]byte, aes.BlockSize)
stream := cipher.NewCTR(block, iv)
decryptedBytes := make([]byte, len(cipheredBytes))
stream.XORKeyStream(decryptedBytes, cipheredBytes)
return string(decryptedBytes), nil
}
请注意，此代码仅提供了解密功能。如果您需要加密功能，请让我知道，我可以为您提供相应的代码。
英文:
I want to rewrite the following code from java to golang.
Here mostly I am looking for a function which can work same as byte[] cipheredBytes = Base64.getDecoder().decode((encryptedText));
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.GeneralSecurityException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.KeyException;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import java.util.Base64;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
public class AESBase64UsedForPartners {
private final String characterEncoding = "UTF-8";
private final String cipherTransformation = "AES/CBC/PKCS5Padding";
private final String aesEncryptionAlgorithm = "AES";
static String SecretKey = "$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));
}
}
答案1
得分: 1
你可以使用encoding/base64包来解码Base64编码的字符串：
decoded, err := base64.StdEncoding.DecodeString(s)
英文:
You can use the encoding/base64 package for decoding Base64 encoded strings:
decoded, err := base64.StdEncoding.DecodeString(s)
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