SHA-2 is a family of cryptographic hash functions designed by the NSA and published by NIST in 2001. The family includes various output lengths (224, 256, 384, and 512 bits). The SHA-2 family will eventually be replaced by the winner of NIST's hash function competition.
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Is SHA-512 bijective when hashing a single 512-bit block?
It's been said that CRC-64 is bijective for a 64-bit block.
It the corresponding statement true for SHA-2?
11
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2answers
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“SHA-256” vs “any 256 bits of SHA-512”, which is more secure?
In terms of security strength, Is there any difference in using the SHA-256 algorithm vs using any random 256 bits of the output of the SHA-512 algorithm?
Similarly, what is the security difference ...
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A simple block cipher based on the SHA-256 hash function
I've come up with this little routine for doing encryption using the SHA-2 (in this case SHA-256) hash function. As such it is a block cipher with a 256 bit (32 byte) block size and an arbitrary key ...
