编辑:我在OSX上的IDLE中运行了脚本,并且运行顺利,但是当我尝试在kali linux上的gedit中运行它时,仍然出现语法错误。有任何猜测吗?
这是我遇到的语法错误:
./ challenge5.py:第5行:语法错误,出现在意外令牌附近(
./ challenge5.py:defencodeRepeatingKeyXor(s,key):
这是我正在运行的完整脚本:
import binascii
def encodeRepeatingKeyXor(s, key):
return bytes([s[i] ^ key[i % len(key)] for i in range(len(s))])
x = b'''Burning 'em, if you ain't quick and nimble
I go crazy when I hear a cymbal'''
key = b'ICE'
encodedExpectedY = '0b3637272a2b2e63622c2e69692a23693a2a3c6324202d623d63343c2a26226324272765272a282b2f20430a652e2c652a3124333a653e2b2027630c692b20283165286326302e27282f'
expectedY = binascii.unhexlify(encodedExpectedY)
if __name__ == '__main__':
y = encodeRepeatingKeyXor(x, key)
encodedY = binascii.hexlify(y).decode('ascii')
print(encodedY)
print(encodedExpectedY)
if y != expectedY:
raise Exception(encodedY + ' != ' + encodedExpectedY)
任何帮助都将受到赞赏。谢谢!
编辑:我在OSX上的IDLE中运行了脚本,并且运行顺利,但是当我尝试在kali linux上的gedit中运行它时,仍然出现语法错误。有任何猜测吗?
答案 0 :(得分:0)
bytes()和b'...'不能像您期望的那样工作。这是因为它们是不可变的。如果使用字节数组重构代码,则可以正常工作:
import binascii
def encodeRepeatingKeyXor(s, key):
return bytearray([s[i] ^ key[i % len(key)] for i in range(len(s))])
x = b'''Burning 'em, if you ain't quick and nimble
I go crazy when I hear a cymbal'''
key = b'ICE'
encodedExpectedY = '0b3637272a2b2e63622c2e69692a23693a2a3c6324202d623d63343c2a26226324272765272a282b2f20430a652e2c652a3124333a653e2b2027630c692b20283165286326302e27282f'
expectedY = binascii.unhexlify(encodedExpectedY)
if __name__ == '__main__':
y = encodeRepeatingKeyXor(bytearray(x), bytearray(key))
encodedY = binascii.hexlify(y).decode('ascii')
print(encodedY)
print(encodedExpectedY)
if y != expectedY:
raise Exception(encodedY + ' != ' + encodedExpectedY)
看看this问题以供进一步阅读。