Message digest functions also calledhash functions, are used to produce digital summaries of information called message digests. Message digests (also calledhashes) are commonly 128 bits to 160 bits in length and provide a digital identifier for each digital file or document. Message digest functio...
The hash functions dealt with in this chapter are DES-like Message Digest Computation (DMDC) (1994), MD5 Message-Digest Algorithm (1992), and Secure Hash Algorithm (SHA-1) (1995). The keyed-hashed Message Authentication Code (HMAC) is a key-dependent one-way hash function which provides ...
The output always has the same length, so this can be taken into account when processing or storing the message digest. Also, the output is much shorter than the input, so that processing and storing can be done much quicker. The most common cryptographic hash function is MD5. MD5 was ...
消息摘要算法MD5 (Message Digest)是一种常用的Hash函数。MD5算法以一个任意长数据块作为输入,其输出为一个___ bit 的消息摘要。 A.
A message digest is a fixed size numeric representation of the contents of a message. The message digest is computed by a hash function and can be encrypted, forming a digital signature.
Message digests, message authentication codes, and digital signatures are all based on a notion of "hashing." Hashing is one of those 50-cent words that simply means convert. An important property of the one-way hash function is that it must be collision-free. The strength of a one-way ...
消息摘要算法MD5(Message Digest)是一种常用的Hash函数。MD5算法以一个任意长的数据块作为输入,其输出为一个___比特的消息摘要。 A. 128 B. 160 C. 256 D. 512 相关知识点: 试题来源: 解析 A 正确答案:A 解析:MD5以512位分组来处理输入的信息,且每一分组又被划分为16个32位子分组,经过了一系列的处理...
A message digest is an encrypted, abbreviated version of a message generated through a hash function. It serves as a unique identifier for the message and enhances security by making it computationally infeasible to decrypt or duplicate the original message. ...
单项选择题消息摘要算法MD5(Message Digest)是一种常用的Hash函数。MD5算法以一个任意长的数据块作为输入,其输出为一个___比特的消息摘要。 A.128B.160C.256D.512 点击查看答案&解析 延伸阅读你可能感兴趣的试题 1.单项选择题X.509数字证书中的签名字段是指___。 A.用户对自己证书的签名B.用户对发送报文的...
MD5(Message Digest Algorithm 5)是一种哈希函数,用于生成128位(16字节)的哈希值。其设计目的是为了提供数据完整性验证和消息认证。MD5算法将任意长度的输入数据转换为固定长度的128位哈希值,且输出的哈希值在理想情况下是唯一的。 MD5算法的流程和步骤