5、难 举例 MD5、SHA-1BHASH 消息摘要 Message digest 对于任意给定的报文,产生固定长度的摘要信息 特性 单向 抗碰撞(弱、强) 举例 代替CRC等 很多软件发行时文件的MD5校验 MACBHash Algorithm Structure B12.0 MD5 近几年对散列算法的分析就是从MD5上获得突破的,MD5的强抗碰撞特性被
It then combines that hash again with the secret key and creates a second SHA-1 hash. Like SHA-1, the HMACSHA1 algorithm produces a 160-bit hash. ▪ MACTripleDES This algorithm uses TripleDES to encrypt the message, discarding all but the final 64 bits of the ciphertext. With keyed...
4. MAC有很多实现方式,比较通用的是基于hash算法的MAC,也就说HMAC是MAC的一个特例。 方法1:HMAC is a recipe forturning hash functions(such as MD5 or SHA256)into MACs.So HMAC-MD5 and HMAC-SHA256 are specific MAC algorithms, just like QuickSort is a specific sorting algorithm. 根据RFC-2104HMAC...
The switch typically uses a hash algorithm to learn MAC address entries. However, conflicts may occur if two or more MAC addresses produce the same hash value. In this case, the switch may fail to learn many MAC addresses and then will broadcast traffic destined for these MAC addresses. The...
SHA1 是由 NIST NSA 设计为同 DSA 一起使用的,sha 是 Secure Hash algorithm 的缩写;它对长度小于 2^64 的输入,产生长度为160bit的散列值; SHA-1 设计时基于和 MD4 相同原理,并且模仿了该算法。 SHA1是由NIST NSA设计为同DSA一起使用的,它对长度小于264的输入,产生长度为160bit的散列值,因此抗穷举(bru...
A Cryptographic Hash Algorithm is a method used to generate a fixed-size string, known as a "message digest" or "digital fingerprint," from any size plaintext. These algorithms are essential for ensuring data integrity, digital signatures, password verification, and file integrity checks in variou...
指定对消息进行身份验证时消息队列所用的哈希算法。C# 复制 public enum HashAlgorithm继承 Object ValueType Enum HashAlgorithm 字段展开表 名称值说明 Mac 32773 MAC 键控哈希算法。 Md2 32769 MD2 哈希算法。 Md4 32770 MD4 哈希算法。 Md5 32771 MD5 哈希算法。 None 0 未使用哈希算法。 Sha 32772 ...
Configuring a MAC Hash Algorithm Context The switch typically uses a hash algorithm to learn MAC address entries. However, conflicts may occur if two or more MAC addresses produce the same hash value. In this case, the switch may fail to learn many MAC addresses and then will broadcast traffi...
Cryptographic Primitives:symmetric key encryption(对称加密),public key encryption(公钥加密),message authentication code(MAC, 消息认证码),hash functions(哈希函数),digital signatures(数字签名) Basics of Quantum Cryptography:quantum key distribution,random number distribution ...
MacAlgorithmProvider 属性 方法 CreateHash CreateKey OpenAlgorithm PersistedKeyProvider SymmetricAlgorithmNames SymmetricKeyAlgorithmProvider Windows.Security.Cryptography.DataProtection Windows.Security.DataProtection Windows.Security.EnterpriseData Windows.Security.ExchangeActiveSyncProvisioning ...