What are NIST and SHA algorithms
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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.
