SHA-2 (FIPS 180-4)

1. Secure Hash Standard (FIPS 180-4)

   SHA-1 and SHA-2 family algorithm specifications.

2. Message padding and parsing

   Padding rules and block parsing for SHA-2.

3. Functions and constants

   Ch, Maj, Sigma functions and round constants.

4. Computing the message digest

   Initial hash values and compression loop.

5. Overview of the SHA-2 family

   SHA-224, SHA-256, SHA-384 and SHA-512 and their relationship.

6. Hash function applications (SP 800-107)

   Digital signatures, HMAC, KDF and truncated digests.

7. NIST hash functions project

   Approved hash functions and transition guidance.

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