InitKeyCode=IP(text)# 产生子密钥 集合 subkeylist=createSubkey(key)# 获得Ln 和 Rn Ln=InitKeyCode[0:32]Rn=InitKeyCode[32:]# 如果是解密的过程 把子密钥数字逆过来 就变成解密过程了if(flag=="-1"):subkeylist=subkeylist[::-1]forsubkeyinsubkey
密钥选项3:等同于DES,只有56个密钥位。这个选项提供了与DES的兼容性,因为第1和第2次DES操作相互抵消了。该选项不再为国家标准科技协会(NIST)所建议,亦不为ISO/IEC 18033-3所支持。 MD5算法: 英文名:Message Digest Algorithm V5。 中文名:消息摘要算法第五版。 算法的输入:任何长度的字节流。 算法的输出:16...
#This is a pure python implementation of the DES encryption algorithm.#It's pure python to avoid portability issues, since most DES#implementations are programmed in C (for performance reasons).# #Triple DES class is also implemented, utilising the DES base. Triple DES#is either DES-EDE3 wit...
#This is a pure python implementation of the DES encryption algorithm.#It's pure python to avoid portability issues, since most DES#implementations are programmed in C (for performance reasons).# #Triple DES class is also implemented, utilising the DES base. Triple DES#is either DES-EDE3 wit...
priKey = RSA.importKey(private_keyBytes)# priKey = RSA.importKey(privateKey)signer = PKCS1_v1_5.new(priKey,)# SIGNATURE_ALGORITHM = "MD5withRSA"hash_obj = MD5.new(data.encode('utf-8'))# SIGNATURE_ALGORITHM = "SHA1withRSA"# hash_obj = SHA1.new(data.encode('utf-8'))# SIGNATU...
#This is a pure python implementation of the DES encryption algorithm.#It's pure python to avoid portability issues, since most DES#implementations are programmed in C (for performance reasons).# #Triple DES class is also implemented, utilising the DES base. Triple DES#is either DES-EDE3 wit...
### Author: Todd Whiteman# Date: 16th March, 2009# Verion: 2.0.0# License: Public Domain - free to do as you wish# Homepage: http://twhiteman.netfirms.com/des.html## This is a pure python implementation of the DES encryption algorithm.# It's pure python to avoid portability issues...
# This is a pure python implementation of the DES encryption algorithm.# It's pure python to avoid portability issues, since most DES # implementations are programmed in C (for performance reasons).# # Triple DES class is also implemented, utilising the DES base. Triple DES # is either DES...
This chapter provides tutorial examples and notes about DES algorithm implementation in the JDK JCE package. Topics include JCE classes related to DES; testing tutorial programs for DES encryption and decryption; PKCS5Padding schema to pad cleartext as 8
3DES(或称为TripleDES)是三重数据加密算法(TDEA,Triple Data Encryption Algorithm)块密码的通称。它相当于是对每个数据块应用三次DES加密算法。由于...过程为:C=Ek3(Dk2(Ek1(M))) 3DES解密过程为:M=Dk1(EK2(Dk3©)) 贴代码!!!加密算法:解密算法: 结果 是不是很简单 Java密码学(3)——对称加密算法...