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- This program is about taking a sentence and somehow concealing it within a body of text and then subsequently being able to retrieve it. I.e. if you were to send someone the file, it would just look like the book and you d not notice that it containe
asn1berder
- ASN.1/BER/DER 编码子集入门指南。PKI证书交换时常用,有助于密码系统开发。PDF文件-Encoding a subset ASN.1/BER/DER Getting Started Guide. The exchange of PKI certificates often used to help the development of cryptography. PDF document
jj
- CORNACCHIA Algorithm * * GOAL: given d and p prime, find (x,y) such that x^2 + y^2 = d * p * * in this implementation, d = 1. This code does not accept d <> 1 !!! * see "A Course in Computational Algebraic Number Theory" by Henri
Cryptage
- Dans cette nouvelle version avec interface graphique, l utilisateur a la possibilit?de (d?crypter des messages et des fichiers tout en gardant l extension du fichier source (bref, c est lui qui choi
bmrsa11
- RSA加密时间攻击是侧信道攻击中的一种重要方法,它利用密码算法执行时间所反映出的密钥信息,对密码系统进行攻击,攻击的主要对象是RSA密码体制。-RSA,encryption of RSA, it has a lot of codes about how to generate d,e,n.Then it offers plaintext to verify this model.After encryption, it decryption the ciphertext.
des
- D这是一个DES加密算法,基于C++ 开发环境-this is a DES solver
speedhack_185
- its a speed hack d-its a speed hack dll
456
- RSA算法的C语言实现 1.密钥的产生 (1)选两个安全的大素数p和q。 (2)计算n=p×q,φ(n)=(p-1)(q-1),其中φ(n)是n的欧拉函数值。 (3)选一整数e,满足1<e<φ(n),且gcd(φ(n),e)=1。 (4)计算d,满足de≡1 modφ(n),即d是e在模φ(n)下的乘法逆元,因e与φ(n)互素,由模运算可知,它的乘法逆元一定存在。 (5)以{e,n}为公开钥,{d,n}为秘密钥。 2.加密 加密时首先将明文M比特串分组
There-are-three-types-of-cryptography-techniques.
- Caesar cipher is a simple substitution cipher where each letter in the plain text is replaced with a letter a fixed number of places down the aplhabet. EXAMPLE If the number of places to shift is 3, the letter A would be converted to ltter D. Usi
数字签名实验
- DSA签名程序和DSA验证程序。 签名程序流程: a. 读入字符串(从屏幕或文本文件中),字符串内容应包含自己的学号或姓名; b. 计算该字符串的SHA-1值; c. 生成DSA密钥对(利用dsa_make_key); d. 利用dsa_export函数导出所生成的DSA密钥对的公钥,并保存到文件中(dsa_key.pub),供验证程序使用; e. 对第2步产生的SHA-1值进行签名,保存签名到文件中(signature.txt)(DSA signatures and DSA val