我已经浏览了几个使用RC4分组密码的python脚本...我在完成程序时遇到问题,以便正确输出......
程序当前要求输入“密钥”和“明文”(用密钥加密的文本)。 并输出一个编码的字符串......我想。所以如果我输入单词“Plaintext”加密我得到以下内容。但我认为这是不完整的......
[187, 243, 22, 232, 217, 64, 175, 10, 211]
我希望我的加密输出为十六进制
BB F3 16 E8 D9 40 AF 0A D3
我的节目目前还不完整,但只是想了解如何
编辑:以上内容已由Ebrahim解决。只需要解密帮助
我理解加密过程中的逻辑,但是我很难掌握解密过程,即使它非常相似。
# Global variables
state = [None] * 256
p = q = None
def setKey(key):
##RC4 Key Scheduling Algorithm
global p, q, state
state = [n for n in range(256)]
p = q = j = 0
for i in range(256):
if len(key) > 0:
j = (j + state[i] + key[i % len(key)]) % 256
else:
j = (j + state[i]) % 256
state[i], state[j] = state[j], state[i]
def byteGenerator():
##RC4 Pseudo-Random Generation Algorithm
global p, q, state
p = (p + 1) % 256
q = (q + state[p]) % 256
state[p], state[q] = state[q], state[p]
return state[(state[p] + state[q]) % 256]
def encrypt(key,inputString):
##Encrypt input string returning a byte list
setKey(string_to_list(key))
return [ord(p) ^ byteGenerator() for p in inputString]
def decrypt(inputByteList):
##Decrypt input byte list returning a string
return "".join([chr(c ^ byteGenerator()) for c in inputByteList])
def intToList(inputNumber):
##Convert a number into a byte list
inputString = "{:02x}".format(inputNumber)
return [int(inputString[i:i + 2], 16) for i in range(0, len(inputString), 2)]
def string_to_list(inputString):
##Convert a string into a byte list
return [ord(c) for c in inputString]
loop = 1
while loop == 1: #simple loop to always bring the user back to the menu
print("RC4 Encryptor/Decryptor")
print
print("Please choose an option from the below menu")
print
print("1) Encrypt")
print("2) Decrypt")
print
choice = input("Choose your option: ")
choice = int(choice)
if choice == 1:
key = raw_input("Enter Key: ")
inputstring = raw_input("enter plaintext: ")
encrypt(key, inputstring)
elif choice == 2:
key = raw_input("Enter Key: ")
ciphertext = raw_input("enter plaintext: ")
print decrypt(intToList(ciphertext))
elif choice == 3:
#returns the user to the previous menu by ending the loop and clearing the screen.
loop = 0
else:
print ("please enter a valid option") #if any NUMBER other than 1, 2 or 3 is entered.
答案 0 :(得分:1)
要将十进制输出转换为十六进制输出:
>>> arr = [187, 243, 22, 232, 217, 64, 175, 10, 211]
>>> ' '.join('%02x'%i for i in arr)
'bb f3 16 e8 d9 40 af 0a d3'
>>>
答案 1 :(得分:0)
我知道这是一个很老的问题,但这里有一些信息以防万一: