classRC4:def__init__(self,key:bytes):"""初始化 RC4 类:param key: 密钥,字节类型"""self.key=keyself.s=list(range(256))# 初始化 S 数组self._ksa()# 执行密钥调度算法def_ksa(self):"""密钥调度算法 (Key Scheduling Algorithm, KSA)"""j=0key_length=len(self.key)foriinrange(256):j=...
python class RC4: def __init__(self, key): self.key = key self.S = list(range(256)) self.key_scheduling_algorithm() self.i = 0 self.j = 0 def key_scheduling_algorithm(self): j = 0 for i in range(256): j = (j + self.S[i] + ord(self.key[i % len(self.key)])) ...
下面是RC4解密算法的Python实现示例: classRC4:def__init__(self,key:bytes):self.key=key self.S=self.key_scheduling_algorithm(key)self.i=0self.j=0defkey_scheduling_algorithm(self,key:bytes):S=list(range(256))j=0key_length=len(key)foriinrange(256):j=(j+S[i]+key[i%key_length])%256...
RC4算法的解密过程和加密过程类似,只需将密钥流与密文进行异或操作即可。 二、RC4加密算法Python实现 下面是一个使用Python实现RC4算法的例程: def KSA(key): """ Key-Scheduling Algorithm (KSA) """ S = list(range(256)) j = 0 for i in range(256): j = (j + S[i] + key[i % len(key)]...
六、RC4算法的Python示例 defrc4(key,data):S=list(range(256))j=0out=[]# Key-scheduling algorithmforiinrange(256):j=(j+S[i]+key[i%len(key)])%256S[i],S[j]=S[j],S[i]# Pseudo-random generation algorithmi=j=0forcharindata:i=(i+1)%256j=(j+S[i])%256S[i],S[j]=S[j],...
Cipher import ARC4 as rc4cipher import base64 def rc4_algorithm(encrypt_or_decrypt, data, key1): if encrypt_or_decrypt == "encrypt": key = bytes(key1, encoding='utf-8') enc = rc4cipher.new(key) res = enc.encrypt(data.encode('utf-8')) res=base64.b64encode(res) res = str(...
python实现rc4加密解密,base64输出 pythonbase64 from Crypto.Cipher import ARC4 as rc4cipher import base64 def rc4_algorithm(encrypt_or_decrypt, data, key1): if encrypt_or_decrypt == "encrypt": key = bytes(key1, encoding='utf-8') enc = rc4cipher.new(key) res = enc.encrypt(dat 小小咸...
result = self.rc4Algorithm(data) returnself.keyc + base64.b64encode(result) #解密 defdecrypt(self, data): self.keyc = data[0:self.keyLen] data = base64.b64decode(data[self.keyLen:]) result = self.rc4Algorithm(data) if(result[0:10] =='0000000000'orint(result[0:10]) - int(time...
geeksforgeeks . org/implementation-of-RC4-algorithm/RC4 是一种对称流密码和变密钥长度算法。这种对称密钥算法同样用于加密和解密,这样数据流只需用生成的密钥序列异或。该算法是串行的,因为它需要基于密钥序列连续交换状态条目。该算法分两个阶段工作:关键调度算法(KSA) :...
foriinrange(256): j=(j+S[i]+key[i%key_length])%256 S[i], S[j]=S[j], S[i]# swap returnS defKSA(key): """ Key Scheduling Algorithm (KSA) """ key_length=len(key) S=list(range(256)) j=0 foriinrange(256): j=(j+S[i]+key[i%key_length])%256 ...