python 异或加密字符串的实例
做个简单习题：输入明文给定秘钥，密文还原，按位异或处理。
import base64 as b64 def xor_encrypt(tips,key): ltips=len(tips) lkey=len(key) secret=[] num=0 for each in tips: if num>=lkey: num=num%lkey secret.append( chr( ord(each)^ord(key[num]) ) ) num+=1 return b64.b64encode( "".join( secret ).encode() ).decode() def xor_decrypt(secret,key): tips = b64.b64decode( secret.encode() ).decode() ltips=len(tips) lkey=len(key) secret=[] num=0 for each in tips: if num>=lkey: num=num%lkey secret.append( chr( ord(each)^ord(key[num]) ) ) num+=1 return "".join( secret ) tips= "1234567" key= "owen" secret = xor_encrypt(tips,key) print( "cipher_text:", secret ) plaintxt = xor_decrypt( secret, key ) print( "plain_text:",plaintxt )
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