Shulou(Shulou.com)06/03 Report--

This article mainly explains "what is NIST and SHA algorithm". The content of the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is NIST and SHA algorithm".

SHA1

In cryptography, SHA-1 (Secure Hash Algorithm 1) is a cryptographic hash function that accepts an input and produces a hash value of 160 bits (20 bytes), called a summary of information.

Let's first take a look at the encryption flow chart of SHA1:

The above An and B, C, D, E are all state of 32bits.

F is a nonlinear function.

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