{3DES加密解密的工具类 } */ public class DESUtils { private static final Logger logger = LoggerFactory.getLogger...(DESUtils.class); //定义加密算法,有DES、DESede(即3DES)、Blowfish private static final String ALGORITHM...".indexOf(c); } /** * 解密函数 * @param src 密文的字节数组 * @...
DES is the representative of the symmetric key cryptography. This paper describes DES algorithm using C language. Key words: DES;key; initial permutation; inverse permutation 随着计算机网络不断渗透到各个领域,密码学的应用也随之扩大。而DES是国际上商用保密通信和计算机通信的最常用的加密算法[1]。本文...
这里有两个加密、解密方法: 一种是带密钥的加密;一种是动态加密,就是不需要密钥,密钥被动态生成并且保存在密文中,解密时先解密密钥,在解密密文。 usingSystem;usingSystem.Security.Cryptography;usingSystem.Text;namespaceCommon.CryptHelper {publicclassAESCrypt {publicconststringRET_ERROR ="x07x07x07x07x07...
Cryptography - Diffie-Hellman Algorithm Data Integrity in Cryptography Data Integrity in Cryptography Message Authentication Cryptography Digital signatures Public Key Infrastructure Hashing MD5 (Message Digest Algorithm 5) SHA-1 (Secure Hash Algorithm 1) SHA-256 (Secure Hash Algorithm 256-bit) SHA-512 ...
(privateKey), contentData, algorithm)); } private static byte[] Transform(AsymmetricKeyParameter key, byte[] contentData, string algorithm, bool forEncryption) { var c = CipherUtilities.GetCipher(algorithm); c.Init(forEncryption, new ParametersWithRandom(key)); return c.DoFinal(contentData); ...
[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")] public static System.Security.Cryptography.TripleDES? Cr...
数据加密算法DES 数据加密算法(Data Encryption Algorithm,DEA)的数据加密标准(Data Encryption Standard,DES)是规范的描述,它出自 IBM 的研究工作,并在 1997 年被美国政府正式采纳。它很可能是使用最广泛的秘钥系统,特别是在保护金融数据的安全中,最初开发的 DES 是嵌入硬 件中的。通常,自动... ...
ECC(Elliptical Curve Cryptography)椭圆曲线加密算法是以椭圆曲线理论为基础实现的,通过椭圆曲线方程式的性质产生密钥,而不是采用传统的方法利用大质数的积来产生。在创建密钥时更快、更小。 示例 import java.security.AlgorithmParameterGenerator; import java.security.AlgorithmParameters; import java.security.Key; impor...
/* C code only in portable version */ // Richard Outerbridge's initial permutation algorithm /* inline void IPERM(word32 &left, word32 &right) { word32 work; work = ((left >> 4) ^ right) & 0x0f0f0f0f; right ^= work; left ^= work << 4; work = ((left >>...
[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]publicstaticSystem.Security.Cryptography.DES? Create(string...