blake2b.cuh File Reference

#include "blake2b.h"

Detailed Description

Blake2b CUDA hash function support.

This file is based on Dr. Markku-Juhani O. Saarinen's "somewhat smaller" BLAKE2 implemetation...

‍https://github.com/mjosaarinen/blake2_mjosref

... which was released into the Public Domain under the Creative Commons Zero v1.0 Universal license.

Copyright

This file is released into the Public Domain under the Creative Commons Zero v1.0 Universal license.

Functions
__device__ void	cu_blake2b_compress (BLAKE2B_CTX *ctx, int last)
	Blake2b compression rounds. More...
__device__ int	cu_blake2b_init (BLAKE2B_CTX *ctx, const void *key, int keylen, int outlen)
	Initialize a Blake2b context with optional key. More...
__device__ void	cu_blake2b_update (BLAKE2B_CTX *ctx, const void *in, size_t inlen)
	Add inlen bytes from in to a Blake2b context for hashing. More...
__device__ void	cu_blake2b_final (BLAKE2B_CTX *ctx, void *out)
	Finalize a Blake2b message digest. More...
__device__ int	cu_blake2b (const void *in, size_t inlen, const void *key, int keylen, void *out, int outlen)
	Convenient all-in-one Blake2b computation. More...

Function Documentation

cu_blake2b()

__device__ int cu_blake2b	(	const void *	in,
		size_t	inlen,
		const void *	key,
		int	keylen,
		void *	out,
		int	outlen
	)

Convenient all-in-one Blake2b computation.

Performs cu_blake2b_init(), cu_blake2b_update() and cu_blake2b_final(), and places the resulting hash in out.

Parameters

in	Pointer to data to hash
inlen	Length of in data, in bytes
key	Pointer to optional "key" input
keylen	Length of optional key input, in bytes
out	Pointer to location to place the message digest
outlen	Length* of desired message digest, in bytes *compatible message digest lengths are 32, 48 and 64

cu_blake2b_compress()

__device__ void cu_blake2b_compress	(	BLAKE2B_CTX *	ctx,
		int	last
	)

Blake2b compression rounds.

Parameters

ctx	Pointer to Blake2b context
last	Flag indicating the final compression

Blake2b compression Sigma. Used in compression rounds.

cu_blake2b_final()

__device__ void cu_blake2b_final	(	BLAKE2B_CTX *	ctx,
		void *	out
	)

Finalize a Blake2b message digest.

Generate the Blake2b message digest and place in out.

Parameters

ctx	Pointer to Blake2b context
out	Pointer to location to place the message digest

cu_blake2b_init()

__device__ int cu_blake2b_init	(	BLAKE2B_CTX *	ctx,
		const void *	key,
		int	keylen,
		int	outlen
	)

Initialize a Blake2b context with optional key.

To hash without a key, specify NULL and 0 for key and keylen, respectively.

Parameters

ctx	Pointer to Blake2b context
key	Pointer to optional "key" input
keylen	Length of optional key input, in bytes
outlen	Byte length of desired digest

Returns

0 on success, else if initialization fails (-1).

Note

Blake2b initialization can fail if keylen is greater than 64 or outlen is not a supported digest length. Supported lengths include: 32 (256-bits), 48 (384-bits) or 64 (512-bits).

cu_blake2b_update()

__device__ void cu_blake2b_update	(	BLAKE2B_CTX *	ctx,
		const void *	in,
		size_t	inlen
	)

Add inlen bytes from in to a Blake2b context for hashing.

Parameters

ctx	Pointer to Blake2b context
in	Pointer to data to hash
inlen	Length of in data, in bytes