RndPhrase | RndPhrase : Auto-generated secure passwords | Identity Management library
kandi X-RAY | RndPhrase Summary
kandi X-RAY | RndPhrase Summary
RndPhrase - Auto-generated secure passwords.
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QUESTION
I'm newbie in cryptography.
I'm trying to implement CubeHash hashing function on pure PHP.
I've ported some JS-version (32-bit) to PHP (64-bit), but I'm not able to implement CubeHash with param b
when it is grater than 1 (block size is grater than 1 byte).
Please, help me.
run online: https://repl.it/repls/FreshWickedHashfunction
...ANSWER
Answered 2020-May-13 at 20:58I've solve my issue with multi-byte blocks.
Key features is (from official docs http://cubehash.cr.yp.to):
- CubeHash maintains a 128-byte state. It xors the first
b
-byte input block into the firstb
bytes of the state, transforms the state invertibly throughr
identical rounds. Each next block - the same procedure. - The 128-byte state is viewed as a sequence of 32 4-byte words x[00000], x[00001], x[00010], x[00011], x[00100], ..., x[11111], each of which is interpreted in little-endian form as a 32-bit integer.
So we need to:
- xor each byte of the block into each byte of the state
- swap byte endianness before xor'ing
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