从Python 2转换到Python 3时出现python加密unicode错误
从Python 2转换到Python 3时出现python加密unicode错误
提问于 2018-07-16 01:12:48
我找到了一些代码，我想把它们合并到我的Python加密程序中。它应该对代码的同一目录中的文件进行加密，我希望它指向一个目录。但是，它是用Python 2编写的，当我修改一些代码以适应Python 3时，我得到了以下错误：
Traceback (most recent call last):
File "/home/pi/Desktop/Projects/FyleCript/Dev Files/encryption.py", line 77, in <module>
encrypt(SHA256.new(password).digest(), str(Tfiles))
File "/usr/lib/python3/dist-packages/Crypto/Hash/SHA256.py", line 88, in new
return SHA256Hash().new(data)
File "/usr/lib/python3/dist-packages/Crypto/Hash/SHA256.py", line 75, in new
return SHA256Hash(data)
File "/usr/lib/python3/dist-packages/Crypto/Hash/SHA256.py", line 72, in __init__
HashAlgo.__init__(self, hashFactory, data)
File "/usr/lib/python3/dist-packages/Crypto/Hash/hashalgo.py", line 51, in __init__
self.update(data)
File "/usr/lib/python3/dist-packages/Crypto/Hash/hashalgo.py", line 69, in update
return self._hash.update(data)
TypeError: Unicode-objects must be encoded before hashing但是代码在Python2中运行的很好，我试着在SO和Googling上寻找类似的问题，但是没有帮助。
代码：
def encrypt(key, filename):
chunksize = 64 * 1024
outFile = os.path.join(os.path.dirname(filename), "(encrypted)"+os.path.basename(filename))
filesize = str(os.path.getsize(filename)).zfill(16)
IV = ''
for i in range(16):
IV += chr(random.randint(0, 0xFF))
encryptor = AES.new(key, AES.MODE_CBC, IV)
with open(filename, "rb") as infile:
with open(outFile, "wb") as outfile:
outfile.write(filesize)
outfile.write(IV)
while True:
chunk = infile.read(chunksize)
if len(chunk) == 0:
break
elif len(chunk) % 16 !=0:
chunk += ' ' * (16 - (len(chunk) % 16))
outfile.write(encryptor.encrypt(chunk))
def decrypt(key, filename):
outFile = os.path.join(os.path.dirname(filename), os.path.basename(filename[11:]))
chunksize = 64 * 1024
with open(filename, "rb") as infile:
filesize = infile.read(16)
IV = infile.read(16)
decryptor = AES.new(key, AES.MODE_CBC, IV)
with open(outFile, "wb") as outfile:
while True:
chunk = infile.read(chunksize)
if len(chunk) == 0:
break
outfile.write(decryptor.decrypt(chunk))
outfile.truncate(int(filesize))
def allfiles():
allFiles = []
for root, subfiles, files in os.walk(os.getcwd()):
for names in files:
allFiles.append(os.path.join(root, names))
return allFiles
choice = input("Do you want to (E)ncrypt or (D)ecrypt? ")
password = input("Enter the password: ")
encFiles = allfiles()
if choice == "E" or 'e':
for Tfiles in encFiles:
if os.path.basename(Tfiles).startswith("(encrypted)"):
print("%s is already encrypted" %str(Tfiles))
pass
elif Tfiles == os.path.join(os.getcwd(), sys.argv[0]):
pass
else:
encrypt(SHA256.new(password).digest(), str(Tfiles))
print("Done encrypting %s" %str(Tfiles))
os.remove(Tfiles)
elif choice == "D" or 'd':
filename = input("Enter the filename to decrypt: ")
if not os.path.exists(filename):
print("The file does not exist")
sys.exit()
elif not filename.startswith("(encrypted)"):
print("%s is already not encrypted" %filename)
sys.exit()
else:
decrypt(SHA256.new(password).digest(), filename)
print("Done decrypting %s" %filename)
os.remove(filename)
else:
print("Please choose a valid command.")
sys.exit()有人能帮我解决这个问题吗？我使用过Python 2 to 3工具，但它仍然不起作用。
另外，你能解决目录问题吗？这不是必须的，但我想要它。
EDIT:我已经用bytes和bytearray替换了str，但它返回了相同的错误。
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-07-16 06:45:41
您的'password‘变量是一个字符串，但SHA256.new需要字节(例如，允许使用unicode )。Crypto.Hash.SHA256 documentation中列出了您需要的字节数。
解决方案是在散列之前将密码编码为字节。这几乎就是错误消息所说的(如果您知道python 3中的所有字符串都是unicode对象)：
TypeError: Unicode-objects must be encoded before hashing例如，解决方案是使用utf8进行编码：
SHA256.new(password.encode('utf8')).digest()页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51350462
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