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";...
*/ public static final String SECRET_ALGORITHM = "DES"; private static final String PUBLIC_KEY = "DHPublicKey"; private static final String PRIVATE_KEY = "DHPrivateKey"; /** * 初始化甲方密钥 * * @return * @throws Exception */ public static Map<String, Object> initKey() throws Excepti...
Here, We have successfully implemented the proposed methodology using DES (Data Encryption Standard)algorithm. The concept is enhanced by the transformation of meaningless to meaningful shares and the security is enhanced by encrypting the shares of the secret image by using DES. The tool that we ...
{privateRSACryptoServiceProvider rsa;privateRC2CryptoServiceProvider rc2;privatestringname;//Maximum key size for the RC2 algorithmconstintkeySize =128;//Person constructorpublicPerson(stringp_Name) { rsa=newRSACryptoServiceProvider(); rc2=newRC2CryptoServiceProvider(); rc2.KeySize=keySize; name=p_Na...
SHA,secure hash algorithm,安全散列算法,包括SHA-224、SHA-256、SHA-384、SHA-512 MAC,message authentication code,消息认证码算法,综合了MD和SHA算法,包括HmacMD5、HmacSHA1、HmacSHA256、HmacSHA384、HmacSHA512 1)、MD 定义 MD5是由MD2、MD3、MD4改进而来,是典型的消息摘要算法。MD5算法对输入任意长度的消息...
/* End of C code common to both versions */ /* 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 ^= wor...
SHA(Secure Hash Algorithm,安全哈希算法):SHA-1 系列安全性低,SHA2,SHA3 系列安全性较高。 国密算法:例如 SM2、SM3、SM4,其中 SM2 为非对称加密算法,SM4 为对称加密算法,SM3 为哈希算法(安全性及效率和 SHA-256 相当,但更适合国内的应用环境)。 Bcrypt(密码哈希算法):基于 Blowfish 加密算法的密码哈希算法...
51、wecan guarantee DESalgorithm safe and reliable work, must make sure to keep high attention.Modern cryptography features is algorithm can open. The key is how to protect the confidentiality of their keys, and the key is broken secret key. Howcan get hacking The security of the system, thi...
AES Algorithm AES, Advanced Encryption Standard, also known as Rijndael encryption in cryptography, is a block encryption standard adopted by the US federal government. AES block length is fixed at 128 bits, the key length can be 128, 192 or 256 bits. It including AES-ECB,AES-CBC,AES-CTR...
使用Python或C实现DES算法,以及比较DES、AES、RSA、HMAC和SHA-1算法的性能。实验室概述密码学的概念包括通过以下方式向不受信任的对等方隐藏秘密信息将消息...