Cryptography


Cybersecurity and cryptographic hash functions


Operating systems use encryption to keep passwords secret, conceal parts of the system, and ensure that software updates are truly from the system maker.


The algorithms were first published in 2001 in the draft FIPS PUB 180-2, at which time public review and comments were accepted. In August 2002, FIPS PUB 180-2 became the new Secure Hash Standard, replacing FIPS PUB 180-1, which was released in April 1995. The updated standard included the original SHA-1 algorithm, with updated technical notation consistent with that describing the inner workings of the SHA-2 family.[4]

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