Question

我正在尝试使用pycrypto创建一个简单的公钥 - 私钥加密算法：

from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import SHA256
from base64 import b64encode, b64decode

#Open a txt file in the host
f = open('to-drop-box.txt', 'rb')

#Save the contents of the file into a variable
message1 = f.read()
f.close()

data = message1

key = open("privateKey.der", "r").read()
rsakey = RSA.importKey(key)
signer = PKCS1_v1_5.new(rsakey)
digest = SHA256.new()
# It's being assumed the data is base64 encoded, so it's decoded before updating the digest

digest.update(b64decode(data))

sign = signer.sign(digest)
#return b64encode(sign) 
signature = b64encode(sign)

但是我在 digest.update（b64decode（data））行中收到以下错误：

Traceback (most recent call last):
  File "asymmetric-public-private-key-signature.py", line 33, in <module>
    digest.update(b64decode(data))
  File "/usr/lib/python2.7/base64.py", line 76, in b64decode
    raise TypeError(msg)
TypeError: Incorrect padding

有人知道如何修复错误吗？

Answer 1

to-drop-box.txt不是base64编码的。 b64decode抱怨填充（尾随=），但错误通常表示字符串中出现非法字符。

Answer 2

好的，我将行digest.update（b64decode（data））更改为digest.update（data），现在它可以工作了。

＆＃34; TypeError：填充错误＆＃34;在pycrypto-2.6.1（python 2.7.6）ubuntu14.04 LTS

2 个答案: