GOST R 34.11-2012 hash function with 512/256 bit digest
This is portable implementation of the GOST R 34.11-2012 hash function. The standard for this hash function developed by the Center for Information Protection and Special Communications of the Federal Security Service of the Russian Federation with participation of the Open joint-stock company "Information Technologies and Communication Systems" (InfoTeCS JSC).
The standard published as RFC 6986.
GCC, Clang or ICC compiler supporting 64-bit integers.
GNU make (or any compatible make).
Compile and install
The software is smart enough to detect the most suitable configuration
for running hardware and software platform. In almost all cases it is
sufficient to run
make on top of the source directory:
# make gcc46 -g -O2 [other compile options..]
This will configure and compile a binary program file named
The program outputs GOST R 34.11-2012 hash digest in hexadecimal format. Each file listed on the command line is processed and hash is printed for each one. Stdin is read as input when executed without arguments.
# ./gost3411-2012 -h Usage: gost3411-2012 [-25bhvqrte] [-s string] [files ...] Flags: -2 - 256-bit digest. -5 - 512-bit digest (default). -t - Testing mode to produce hash of example messages defined in standard. -b - Benchmark mode (to see how fast or slow this implementation works). -s - Print a digest of the given string. -r - Reverses the format of the output. This helps with visual diffs. -q - Quiet mode - only the digest is printed out. -e - Switch endianness when printing out resulting hash. Default: least significant first. With this options set all bytes in resulting hash are printed in reversed order, more precisely, most significant first.
By default, a compiler defined in
CC environment variable is used, falling
cc. Compile the source with specified compiler:
# make CC=clang
remake may need to be used to overwrite recently compiled
up-to date binary:
# make remake CC=icc
This will recompile sources from scratch using Intel C Compiler with
default flags. If you need to adjust these compiler flags, try to set
# make remake CC=icc CFLAGS="-O3"
The API to this implementation is quite straightforward and similar to other hash function APIs. Actually the CLI utility in this distribution just use this API as underlying engine. You may use this API to implement GOST R 34.11-2012 in your application.
This is the hash context. There should be one
for each object to be hashed.
void GOST34112012Init(GOST34112012Context *CTX, const unsigned int digest_size);
GOST34112012Context of specified hash size
digest_size) on allocated memory block pointed by
CTX. Digest size
can be either 512 or 256. Address of
CTX must be 16-byte aligned.
void GOST34112012Update(GOST34112012Context *CTX, const unsigned char *data, size_t len);
Hash some data in memory of
len bytes size. Address of
be 16-byte aligned. The best performance results are achieved when
len is multiple of 64.
Note that this call does not modify original data in memory. If
security is an issue, calling application should destroy that memory
block right after
GOST34112012Update(), by e.g.
memset() to zero.
void GOST34112012Final(GOST34112012Context *CTX, unsigned char *digest);
Finalizes hashing process and set GOST R 34.11-2012 hash in memory block
void GOST34112012Cleanup(GOST34112012Context *CTX);
The data in context including hash itself, buffer and internal
state zeroed-out. Context totally destroyed and the object can't be
used anymore. Calling application should
free() memory used by this
The following constants may be predefined somewhere in your application code in order to adjust GOST R 34.11-2012 engine behavior:
__GOST3411_LITTLE_ENDIAN__: define this constant on little-endian systems.
__GOST3411_BIG_ENDIAN__: this constant will indicate big-endian system.
If neither of constants defined the engine defaults to little-endian code.
__GOST3411_HAS_MMX__: use MMX instructions to compute digest.
__GOST3411_HAS_SSE2__: use SSE2 instruction set to speedup computation of GOST R 34.11-2012 digest.
__GOST3411_HAS_SSE41__: indicate to include SSE4.1 instructions set.
The best performance results achieved on SSE4.1 capable processors with GCC-4.8 compiler. A slightly less performance is with SSE2 capable processors. The CLI utility in this distribution tries its best to determine which of SSE to use. It falls back to portable code unless any of extensions detected.
Example of usage
#include <stdlib.h> #include <err.h> #include "gost3411-2012-core.h" ... GOST34112012Context *CTX; unsigned char digest; ... if (posix_memalign(&CTX, (size_t) 16, sizeof(GOST34112012Context))) err(EX_OSERR, NULL); GOST34112012Init(CTX, 512); ... GOST34112012Update(CTX, buffer, (size_t) bufsize); ... GOST34112012Update(CTX, buffer, (size_t) bufsize); ... /* call GOST34112012Update() for each block of data */ ... GOST34112012Final(CTX, &digest); ... /* You now have GOST R 34.11-2012 hash in 'digest' */ ... GOST34112012Cleanup(CTX); ...
- FreeBSD x86/x86_64
- Linux x86/x86_64
- Darwin x86/x86_64
- Linux powerpc
To measure performance of this implementation
SUPERCOP toolkit has been used. You
SUPERCOP environment variable to any value and then run
make configure to prepare this implementation to run on SUPERCOP.
Intel(R) Pentium(R) CPU G6950 @ 2.80GHz x86: 40 cycles per byte ( 70 MB/s) Intel(R) Pentium(R) CPU G6950 @ 2.80GHz x86_64: 36 cycles per byte ( 78 MB/s) Intel(R) Xeon(R) CPU X5650 @ 2.67GHz x86_64: 31 cycles per byte ( 84 MB/s) Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz x86_64: 28 cycles per byte (121 MB/s)
Alexey Degtyarev email@example.com