python - SimpleCrypt Python 错误

Question

我正在使用simplecrypt library加密文件，但是我似乎无法以 simplecrypt 可以解码的方式读取该文件。

加密代码:

from simplecrypt import encrypt, decrypt
def encrypt_file(file_name, key):
    with open(file_name, 'rb') as fo:
        plaintext = fo.read()
    enc = encrypt(plaintext, key)
    with open(file_name + ".enc", 'wb') as fo:
        fo.write(enc)

encrypt_file("test.txt", "securepass")

这工作正常并且运行没有任何错误，但是一旦我尝试解码它，我就会收到此错误(使用下面的代码)

simplecrypt.DecryptionException:要解密的数据必须是字节；您不能使用字符串，因为没有字符串编码可以接受所有可能的字符。

from simplecrypt import encrypt, decrypt
def decrypt_file(file_name, key):
    with open(file_name, 'rb') as fo:
        ciphertext = fo.read()
    dec = decrypt(ciphertext, key)
    with open(file_name[:-4], 'wb') as fo:
        fo.write(dec)
decrypt_file("test.txt.enc", "securepass")

Answer 1

啊哈...小错误:-)

根据the link中的文档您在问题中提供的 symplecrypt.encrypt 和 simplecrypt.decrypt 的参数是 ('password', text)。在您的代码中，您已经颠倒了( (text, key) )。您在第一个参数中传递要加密/解密的文本，在第二个参数中传递 key 。只要颠倒这个顺序就可以了。

工作示例:

from simplecrypt import encrypt, decrypt
def encrypt_file(file_name, key):
    with open(file_name, 'rb') as fo:
        plaintext = fo.read()
    print "Text to encrypt: %s" % plaintext
    enc = encrypt(key, plaintext)
    with open(file_name + ".enc", 'wb') as fo:
        fo.write(enc)

def decrypt_file(file_name, key):
    with open(file_name, 'rb') as fo:
        ciphertext = fo.read()
    dec = decrypt(key, ciphertext)
    print "decrypted text: %s" % dec
    with open(file_name[:-4], 'wb') as fo:
        fo.write(dec)

if __name__ == "__main__":
    encrypt_file("test.txt", "securepass")
    decrypt_file("test.txt.enc", "securepass")