python 3DES双倍长加密

Posted 2021-05-09

from Crypto.Cipher import DES3
import binascii

# 3DES加密32位ASCII字符串得到32位ASCII字符串
# 密匙长度16bytes
# 3DES密文长度于明文长度相符,所以要加密得到32位明文中间有16进制转换('1F'→→→'\x1f')
# 加密前2个ASCII字符转换成1bytes(限制了只能是0-F)
def des3(key, msg):
    cipher = DES3.new(binascii.unhexlify(key), DES3.MODE_ECB)
    ret = cipher.encrypt(binascii.unhexlify(msg))
    return ''.join(i.upper() for i in binascii.hexlify(ret))