一个python自定义的加密解密函数，python加密解密,一个python自定义的

一个python自定义的加密解密函数，python加密解密,一个python自定义的

一个python自定义的加密解密函数，下面的代码实现了对字符串的加密盒解密，调用简单

def encrypt(key, s):    b = bytearray(str(s).encode("gbk"))    n = len(b) # 求出 b 的字节数    c = bytearray(n*2)    j = 0    for i in range(0, n):        b1 = b[i]        b2 = b1 ^ key # b1 = b2^ key        c1 = b2 % 16        c2 = b2 // 16 # b2 = c2*16 + c1        c1 = c1 + 65        c2 = c2 + 65 # c1,c2都是0~15之间的数,加上65就变成了A-P 的字符的编码        c[j] = c1        c[j+1] = c2        j = j+2    return c.decode("gbk")def decrypt(key, s):    c = bytearray(str(s).encode("gbk"))    n = len(c) # 计算 b 的字节数    if n % 2 != 0 :        return ""    n = n // 2    b = bytearray(n)    j = 0    for i in range(0, n):        c1 = c[j]        c2 = c[j+1]        j = j+2        c1 = c1 - 65        c2 = c2 - 65        b2 = c2*16 + c1        b1 = b2^ key        b[i]= b1    try:        return b.decode("gbk")    except:        return "failed"key = 15s1 = encrypt(key, 'hello world')s2 = decrypt(key, s1)print s1,'\n',s2 # HGKGDGDGAGPCIHAGNHDGLG# hello world