我试图将java代码转换为python。尝试将pycryptodome库用于此目的。这是java代码:
try {
String data= "shouldEncryptDATA";
String bas64ed= "";
int len12 = Integer.parseInt("12");
byte[] randomparam= new byte[len12];
new SecureRandom().nextBytes(randomparam);
SecretKeySpec secretKeySpec= new SecretKeySpec("1f1f7892GKG38815".getBytes(), "AES");
Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
cipher.init(1, secretKeySpec, new GCMParameterSpec(Integer.parseInt("16") * 8, randomparam));
byte[] bytedata= cipher.doFinal(data.getBytes(StandardCharsets.UTF_8));
byte[] newbytearray= new byte[bytedata.length + len12];
System.arraycopy(randomparam, 0, newbytearray, 0, len12);
System.arraycopy(bytedata, 0, newbytearray, len12, bytedata.length);
bas64ed= Base64.getEncoder().encodeToString(newbytearray);
System.out.println("bas64ed: "+bas64ed);
System.out.println(URLEncoder.encode(bas64ed, "UTF-8"));
} catch (Exception unused_ex) {
System.out.println();
System.out.println("ERROR: " + unused_ex);
}到目前为止,我已经尝试了下面的来模仿java代码之上的代码:
import base64
from Crypto.Cipher import AES
import urllib.parse
from Crypto.Random import get_random_bytes
data= "shouldEncryptDATA"
key = b '1f1f7892GKG38815'
len12 = 12
v1 = bytearray(len12)
cipher = AES.new(key, AES.MODE_GCM, nonce=get_random_bytes(12) )
ciphertext, tag = cipher.encrypt_and_digest(data.encode("utf8"))
base64ed = ""
for x in cipher.nonce, ciphertext, tag:
base64ed += base64.b64encode(x).decode('utf-8')
urlencoded = urllib.parse.quote_plus(base64ed+"\n")
print(urlencoded )上面的python代码生成一个output,但问题是,当我将输出提供给decryption代码时,我得到了MAC check Failed。因此,我意识到我在python代码中的实现在某种程度上是个问题,因为Java代码的输出在传递到decryption代码时会工作并对数据进行解密。那么,如何正确地将Java加密代码转换为Python呢?使用Pycryptodome或任何其他合适的库。
发布于 2021-09-06 15:33:06
Python代码中的bug处于连接状态,它必须是:
base64ed = base64.b64encode(cipher.nonce + ciphertext + tag).decode('utf-8')在此修复之后,如果将两种代码的密文与相同的输入数据(特别是相同的IV)进行比较,它们是相同的。
https://stackoverflow.com/questions/69076789
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