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GNU GENERAL PUBLIC LICENSE
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may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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# BLAKE2b for Ruby
BLAKE2 is a cryptographic hash function faster than MD5, SHA-1, SHA-2, and SHA-3, yet is at least as secure as the latest standard SHA-3. BLAKE2 has been adopted by many projects due to its high speed, security, and simplicity.
More info at: [https://blake2.net](https://blake2.net).
## SUMMARY
This gem is a C-extension for using BLAKE2b in Ruby. BLAKE2b (or just BLAKE2) is optimized for 64-bit platforms—including NEON-enabled ARMs—and produces digests of any size between 1 and 64 bytes.
The C code for this gem is taken from the [official reference C implementation](https://github.com/BLAKE2/BLAKE2) as of commit [ca4c89314abff54e3806b44e4a08164f8204f09a](https://github.com/BLAKE2/BLAKE2/tree/ca4c89314abff54e3806b44e4a08164f8204f09a).
## INSTALL
```
gem install blake2b
```
## USAGE
``` ruby
require 'blake2b'
# The UTF-8 String (Required) that you want to digest.
input = 'abc'
# The main application of keyed BLAKE2 is as a message authentication code (MAC)
# By default `Blake2::Key.none` is used.
key = Blake2b::Key.none
# key = Blake2::Key.from_string("foo bar baz")
# key = Blake2::Key.from_hex('DEADBEAF')
# key = Blake2::Key.from_bytes([222, 173, 190, 175])
# The output length in Bytes of the Hash, Max and Default is 32.
out_len = 32
# HEX OUTPUT
############
Blake2b.hex(input)
=> "508c5e8c327c14e2e1a72ba34eeb452f37458b209ed63a294d999b4c86675982"
Blake2b.hex(input, key)
=> "508c5e8c327c14e2e1a72ba34eeb452f37458b209ed63a294d999b4c86675982"
Blake2b.hex(input, key, out_len)
=> "508c5e8c327c14e2e1a72ba34eeb452f37458b209ed63a294d999b4c86675982"
# BYTES OUTPUT
##############
Blake2b.bytes(input)
=> [80, 140, 94, ...]
Blake2b.bytes(input, key)
=> [80, 140, 94, ...]
Blake2b.bytes(input, key, out_len)
=> [80, 140, 94, ...]
```
## DEVELOPMENT
After checking out the repo, run `bundle` to install dependencies. Then,
run `rake full` to build and test, or `rake test` to only run the tests.
To install this gem onto your local machine, run `bundle exec rake install`.
## Future
Hopefully this gem will not be required once Ruby [issue #12802](https://bugs.ruby-lang.org/issues/12802) is resolved. Blake2 will either be included natively into MRI or available through the OpenSSL library.
## License
Blake2b is based heavily on [Blake2](https://github.com/franckverrot/blake2) by Franck Verrot, Copyright 2014.
Blake2b is copyright 2018, Mauricio Gomes.
The original work (Blake2) and the modified work (Blake2b) are licensed GPL v3.0. See LICENSE.txt for details.

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require 'bundler/gem_tasks'
require 'rake/testtask'
require 'rake/extensiontask'
spec = Gem::Specification.load('blake2b.gemspec')
Rake::ExtensionTask.new('blake2b_ext', spec) do |ext|
ext.source_pattern = '*.{c,h}'
end
Rake::TestTask.new do |t|
t.libs << 'test'
t.pattern = 'test/**/*_test.rb'
t.verbose = true
t.warning = true
end
task default: :full
desc 'clean, compile, and run the full test suite'
task full: %w(clean compile test)
def gemspec
@gemspec ||= begin
file = File.expand_path('../blake2.gemspec', __FILE__)
eval(File.read(file), binding, file)
end
end
desc "Validate the gemspec"
task :gemspec do
gemspec.validate
end
desc "Build the gem"
task :gem => [:gemspec, :build] do
mkdir_p "pkg"
sh "gem build blake2.gemspec"
mv "#{gemspec.full_name}.gem", "pkg"
require 'digest/sha2'
built_gem_path = "pkg/#{gemspec.full_name}.gem"
checksum = Digest::SHA512.new.hexdigest(File.read(built_gem_path))
checksum_path = "checksums/#{gemspec.version}.sha512"
File.open(checksum_path, 'w' ) {|f| f.write(checksum) }
end

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# coding: utf-8
Gem::Specification.new do |spec|
spec.name = "blake2b"
spec.version = "0.9.0"
spec.authors = ["Franck Verrot", "Mauricio Gomes"]
spec.email = ["mauricio@edge14.com"]
spec.homepage = "https://github.com/mgomes/blake2b"
spec.license = "GPL-3.0"
spec.summary = "A cryptographic hash function faster than MD5, SHA-1, SHA-2, and SHA-3 for 64-bit systems."
spec.required_ruby_version = ">= 2.1.0"
spec.description = "A cryptographic hash function faster than MD5, SHA-1, SHA-2, and SHA-3 for 64-bit systems."
spec.files = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
spec.extensions << "ext/blake2_ext/extconf.rb"
spec.test_files = spec.files.grep(%r{^(test|spec|features)/})
spec.require_paths = ["lib"]
spec.add_development_dependency "rake-compiler", "~> 0.9"
spec.add_development_dependency "bundler" , "~> 1.5"
spec.add_development_dependency "rake" , "~> 11.1"
spec.add_development_dependency "minitest" , "~> 5.8"
spec.add_development_dependency "pry" , "~> 0.10"
end

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/*
BLAKE2 reference source code package - reference C implementations
Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
your option. The terms of these licenses can be found at:
- CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
- OpenSSL license : https://www.openssl.org/source/license.html
- Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
More information about the BLAKE2 hash function can be found at
https://blake2.net.
*/
#ifndef BLAKE2_IMPL_H
#define BLAKE2_IMPL_H
#include <stdint.h>
#include <string.h>
#if !defined(__cplusplus) && (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L)
#if defined(_MSC_VER)
#define BLAKE2_INLINE __inline
#elif defined(__GNUC__)
#define BLAKE2_INLINE __inline__
#else
#define BLAKE2_INLINE
#endif
#else
#define BLAKE2_INLINE inline
#endif
static BLAKE2_INLINE uint32_t load32( const void *src )
{
#if defined(NATIVE_LITTLE_ENDIAN)
uint32_t w;
memcpy(&w, src, sizeof w);
return w;
#else
const uint8_t *p = ( const uint8_t * )src;
return (( uint32_t )( p[0] ) << 0) |
(( uint32_t )( p[1] ) << 8) |
(( uint32_t )( p[2] ) << 16) |
(( uint32_t )( p[3] ) << 24) ;
#endif
}
static BLAKE2_INLINE uint64_t load64( const void *src )
{
#if defined(NATIVE_LITTLE_ENDIAN)
uint64_t w;
memcpy(&w, src, sizeof w);
return w;
#else
const uint8_t *p = ( const uint8_t * )src;
return (( uint64_t )( p[0] ) << 0) |
(( uint64_t )( p[1] ) << 8) |
(( uint64_t )( p[2] ) << 16) |
(( uint64_t )( p[3] ) << 24) |
(( uint64_t )( p[4] ) << 32) |
(( uint64_t )( p[5] ) << 40) |
(( uint64_t )( p[6] ) << 48) |
(( uint64_t )( p[7] ) << 56) ;
#endif
}
static BLAKE2_INLINE uint16_t load16( const void *src )
{
#if defined(NATIVE_LITTLE_ENDIAN)
uint16_t w;
memcpy(&w, src, sizeof w);
return w;
#else
const uint8_t *p = ( const uint8_t * )src;
return (( uint16_t )( p[0] ) << 0) |
(( uint16_t )( p[1] ) << 8) ;
#endif
}
static BLAKE2_INLINE void store16( void *dst, uint16_t w )
{
#if defined(NATIVE_LITTLE_ENDIAN)
memcpy(dst, &w, sizeof w);
#else
uint8_t *p = ( uint8_t * )dst;
*p++ = ( uint8_t )w; w >>= 8;
*p++ = ( uint8_t )w;
#endif
}
static BLAKE2_INLINE void store32( void *dst, uint32_t w )
{
#if defined(NATIVE_LITTLE_ENDIAN)
memcpy(dst, &w, sizeof w);
#else
uint8_t *p = ( uint8_t * )dst;
p[0] = (uint8_t)(w >> 0);
p[1] = (uint8_t)(w >> 8);
p[2] = (uint8_t)(w >> 16);
p[3] = (uint8_t)(w >> 24);
#endif
}
static BLAKE2_INLINE void store64( void *dst, uint64_t w )
{
#if defined(NATIVE_LITTLE_ENDIAN)
memcpy(dst, &w, sizeof w);
#else
uint8_t *p = ( uint8_t * )dst;
p[0] = (uint8_t)(w >> 0);
p[1] = (uint8_t)(w >> 8);
p[2] = (uint8_t)(w >> 16);
p[3] = (uint8_t)(w >> 24);
p[4] = (uint8_t)(w >> 32);
p[5] = (uint8_t)(w >> 40);
p[6] = (uint8_t)(w >> 48);
p[7] = (uint8_t)(w >> 56);
#endif
}
static BLAKE2_INLINE uint64_t load48( const void *src )
{
const uint8_t *p = ( const uint8_t * )src;
return (( uint64_t )( p[0] ) << 0) |
(( uint64_t )( p[1] ) << 8) |
(( uint64_t )( p[2] ) << 16) |
(( uint64_t )( p[3] ) << 24) |
(( uint64_t )( p[4] ) << 32) |
(( uint64_t )( p[5] ) << 40) ;
}
static BLAKE2_INLINE void store48( void *dst, uint64_t w )
{
uint8_t *p = ( uint8_t * )dst;
p[0] = (uint8_t)(w >> 0);
p[1] = (uint8_t)(w >> 8);
p[2] = (uint8_t)(w >> 16);
p[3] = (uint8_t)(w >> 24);
p[4] = (uint8_t)(w >> 32);
p[5] = (uint8_t)(w >> 40);
}
static BLAKE2_INLINE uint32_t rotr32( const uint32_t w, const unsigned c )
{
return ( w >> c ) | ( w << ( 32 - c ) );
}
static BLAKE2_INLINE uint64_t rotr64( const uint64_t w, const unsigned c )
{
return ( w >> c ) | ( w << ( 64 - c ) );
}
/* prevents compiler optimizing out memset() */
static BLAKE2_INLINE void secure_zero_memory(void *v, size_t n)
{
static void *(*const volatile memset_v)(void *, int, size_t) = &memset;
memset_v(v, 0, n);
}
#endif

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/*
BLAKE2 reference source code package - reference C implementations
Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
your option. The terms of these licenses can be found at:
- CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
- OpenSSL license : https://www.openssl.org/source/license.html
- Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
More information about the BLAKE2 hash function can be found at
https://blake2.net.
*/
#ifndef BLAKE2_H
#define BLAKE2_H
#include <stddef.h>
#include <stdint.h>
#if defined(_MSC_VER)
#define BLAKE2_PACKED(x) __pragma(pack(push, 1)) x __pragma(pack(pop))
#else
#define BLAKE2_PACKED(x) x __attribute__((packed))
#endif
#if defined(__cplusplus)
extern "C" {
#endif
enum blake2s_constant
{
BLAKE2S_BLOCKBYTES = 64,
BLAKE2S_OUTBYTES = 32,
BLAKE2S_KEYBYTES = 32,
BLAKE2S_SALTBYTES = 8,
BLAKE2S_PERSONALBYTES = 8
};
enum blake2b_constant
{
BLAKE2B_BLOCKBYTES = 128,
BLAKE2B_OUTBYTES = 64,
BLAKE2B_KEYBYTES = 64,
BLAKE2B_SALTBYTES = 16,
BLAKE2B_PERSONALBYTES = 16
};
typedef struct blake2s_state__
{
uint32_t h[8];
uint32_t t[2];
uint32_t f[2];
uint8_t buf[BLAKE2S_BLOCKBYTES];
size_t buflen;
size_t outlen;
uint8_t last_node;
} blake2s_state;
typedef struct blake2b_state__
{
uint64_t h[8];
uint64_t t[2];
uint64_t f[2];
uint8_t buf[BLAKE2B_BLOCKBYTES];
size_t buflen;
size_t outlen;
uint8_t last_node;
} blake2b_state;
typedef struct blake2sp_state__
{
blake2s_state S[8][1];
blake2s_state R[1];
uint8_t buf[8 * BLAKE2S_BLOCKBYTES];
size_t buflen;
size_t outlen;
} blake2sp_state;
typedef struct blake2bp_state__
{
blake2b_state S[4][1];
blake2b_state R[1];
uint8_t buf[4 * BLAKE2B_BLOCKBYTES];
size_t buflen;
size_t outlen;
} blake2bp_state;
BLAKE2_PACKED(struct blake2s_param__
{
uint8_t digest_length; /* 1 */
uint8_t key_length; /* 2 */
uint8_t fanout; /* 3 */
uint8_t depth; /* 4 */
uint32_t leaf_length; /* 8 */
uint32_t node_offset; /* 12 */
uint16_t xof_length; /* 14 */
uint8_t node_depth; /* 15 */
uint8_t inner_length; /* 16 */
/* uint8_t reserved[0]; */
uint8_t salt[BLAKE2S_SALTBYTES]; /* 24 */
uint8_t personal[BLAKE2S_PERSONALBYTES]; /* 32 */
});
typedef struct blake2s_param__ blake2s_param;
BLAKE2_PACKED(struct blake2b_param__
{
uint8_t digest_length; /* 1 */
uint8_t key_length; /* 2 */
uint8_t fanout; /* 3 */
uint8_t depth; /* 4 */
uint32_t leaf_length; /* 8 */
uint32_t node_offset; /* 12 */
uint32_t xof_length; /* 16 */
uint8_t node_depth; /* 17 */
uint8_t inner_length; /* 18 */
uint8_t reserved[14]; /* 32 */
uint8_t salt[BLAKE2B_SALTBYTES]; /* 48 */
uint8_t personal[BLAKE2B_PERSONALBYTES]; /* 64 */
});
typedef struct blake2b_param__ blake2b_param;
typedef struct blake2xs_state__
{
blake2s_state S[1];
blake2s_param P[1];
} blake2xs_state;
typedef struct blake2xb_state__
{
blake2b_state S[1];
blake2b_param P[1];
} blake2xb_state;
/* Padded structs result in a compile-time error */
enum {
BLAKE2_DUMMY_1 = 1/(sizeof(blake2s_param) == BLAKE2S_OUTBYTES),
BLAKE2_DUMMY_2 = 1/(sizeof(blake2b_param) == BLAKE2B_OUTBYTES)
};
/* Streaming API */
int blake2s_init( blake2s_state *S, size_t outlen );
int blake2s_init_key( blake2s_state *S, size_t outlen, const void *key, size_t keylen );
int blake2s_init_param( blake2s_state *S, const blake2s_param *P );
int blake2s_update( blake2s_state *S, const void *in, size_t inlen );
int blake2s_final( blake2s_state *S, void *out, size_t outlen );
int blake2b_init( blake2b_state *S, size_t outlen );
int blake2b_init_key( blake2b_state *S, size_t outlen, const void *key, size_t keylen );
int blake2b_init_param( blake2b_state *S, const blake2b_param *P );
int blake2b_update( blake2b_state *S, const void *in, size_t inlen );
int blake2b_final( blake2b_state *S, void *out, size_t outlen );
int blake2sp_init( blake2sp_state *S, size_t outlen );
int blake2sp_init_key( blake2sp_state *S, size_t outlen, const void *key, size_t keylen );
int blake2sp_update( blake2sp_state *S, const void *in, size_t inlen );
int blake2sp_final( blake2sp_state *S, void *out, size_t outlen );
int blake2bp_init( blake2bp_state *S, size_t outlen );
int blake2bp_init_key( blake2bp_state *S, size_t outlen, const void *key, size_t keylen );
int blake2bp_update( blake2bp_state *S, const void *in, size_t inlen );
int blake2bp_final( blake2bp_state *S, void *out, size_t outlen );
/* Variable output length API */
int blake2xs_init( blake2xs_state *S, const size_t outlen );
int blake2xs_init_key( blake2xs_state *S, const size_t outlen, const void *key, size_t keylen );
int blake2xs_update( blake2xs_state *S, const void *in, size_t inlen );
int blake2xs_final(blake2xs_state *S, void *out, size_t outlen);
int blake2xb_init( blake2xb_state *S, const size_t outlen );
int blake2xb_init_key( blake2xb_state *S, const size_t outlen, const void *key, size_t keylen );
int blake2xb_update( blake2xb_state *S, const void *in, size_t inlen );
int blake2xb_final(blake2xb_state *S, void *out, size_t outlen);
/* Simple API */
int blake2s( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
int blake2b( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
int blake2sp( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
int blake2bp( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
int blake2xs( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
int blake2xb( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
/* This is simply an alias for blake2b */
int blake2( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
#if defined(__cplusplus)
}
#endif
#endif

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/*
BLAKE2 reference source code package - reference C implementations
Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
your option. The terms of these licenses can be found at:
- CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
- OpenSSL license : https://www.openssl.org/source/license.html
- Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
More information about the BLAKE2 hash function can be found at
https://blake2.net.
*/
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include "blake2.h"
#include "blake2-impl.h"
static const uint64_t blake2b_IV[8] =
{
0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
};
static const uint8_t blake2b_sigma[12][16] =
{
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
{ 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 } ,
{ 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 } ,
{ 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 } ,
{ 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 } ,
{ 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 } ,
{ 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 } ,
{ 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 } ,
{ 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 } ,
{ 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 } ,
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
{ 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }
};
static void blake2b_set_lastnode( blake2b_state *S )
{
S->f[1] = (uint64_t)-1;
}
/* Some helper functions, not necessarily useful */
static int blake2b_is_lastblock( const blake2b_state *S )
{
return S->f[0] != 0;
}
static void blake2b_set_lastblock( blake2b_state *S )
{
if( S->last_node ) blake2b_set_lastnode( S );
S->f[0] = (uint64_t)-1;
}
static void blake2b_increment_counter( blake2b_state *S, const uint64_t inc )
{
S->t[0] += inc;
S->t[1] += ( S->t[0] < inc );
}
static void blake2b_init0( blake2b_state *S )
{
size_t i;
memset( S, 0, sizeof( blake2b_state ) );
for( i = 0; i < 8; ++i ) S->h[i] = blake2b_IV[i];
}
/* init xors IV with input parameter block */
int blake2b_init_param( blake2b_state *S, const blake2b_param *P )
{
const uint8_t *p = ( const uint8_t * )( P );
size_t i;
blake2b_init0( S );
/* IV XOR ParamBlock */
for( i = 0; i < 8; ++i )
S->h[i] ^= load64( p + sizeof( S->h[i] ) * i );
S->outlen = P->digest_length;
return 0;
}
int blake2b_init( blake2b_state *S, size_t outlen )
{
blake2b_param P[1];
if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
P->digest_length = (uint8_t)outlen;
P->key_length = 0;
P->fanout = 1;
P->depth = 1;
store32( &P->leaf_length, 0 );
store32( &P->node_offset, 0 );
store32( &P->xof_length, 0 );
P->node_depth = 0;
P->inner_length = 0;
memset( P->reserved, 0, sizeof( P->reserved ) );
memset( P->salt, 0, sizeof( P->salt ) );
memset( P->personal, 0, sizeof( P->personal ) );
return blake2b_init_param( S, P );
}
int blake2b_init_key( blake2b_state *S, size_t outlen, const void *key, size_t keylen )
{
blake2b_param P[1];
if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
if ( !key || !keylen || keylen > BLAKE2B_KEYBYTES ) return -1;
P->digest_length = (uint8_t)outlen;
P->key_length = (uint8_t)keylen;
P->fanout = 1;
P->depth = 1;
store32( &P->leaf_length, 0 );
store32( &P->node_offset, 0 );
store32( &P->xof_length, 0 );
P->node_depth = 0;
P->inner_length = 0;
memset( P->reserved, 0, sizeof( P->reserved ) );
memset( P->salt, 0, sizeof( P->salt ) );
memset( P->personal, 0, sizeof( P->personal ) );
if( blake2b_init_param( S, P ) < 0 ) return -1;
{
uint8_t block[BLAKE2B_BLOCKBYTES];
memset( block, 0, BLAKE2B_BLOCKBYTES );
memcpy( block, key, keylen );
blake2b_update( S, block, BLAKE2B_BLOCKBYTES );
secure_zero_memory( block, BLAKE2B_BLOCKBYTES ); /* Burn the key from stack */
}
return 0;
}
#define G(r,i,a,b,c,d) \
do { \
a = a + b + m[blake2b_sigma[r][2*i+0]]; \
d = rotr64(d ^ a, 32); \
c = c + d; \
b = rotr64(b ^ c, 24); \
a = a + b + m[blake2b_sigma[r][2*i+1]]; \
d = rotr64(d ^ a, 16); \
c = c + d; \
b = rotr64(b ^ c, 63); \
} while(0)
#define ROUND(r) \
do { \
G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
G(r,2,v[ 2],v[ 6],v[10],v[14]); \
G(r,3,v[ 3],v[ 7],v[11],v[15]); \
G(r,4,v[ 0],v[ 5],v[10],v[15]); \
G(r,5,v[ 1],v[ 6],v[11],v[12]); \
G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
} while(0)
static void blake2b_compress( blake2b_state *S, const uint8_t block[BLAKE2B_BLOCKBYTES] )
{
uint64_t m[16];
uint64_t v[16];
size_t i;
for( i = 0; i < 16; ++i ) {
m[i] = load64( block + i * sizeof( m[i] ) );
}
for( i = 0; i < 8; ++i ) {
v[i] = S->h[i];
}
v[ 8] = blake2b_IV[0];
v[ 9] = blake2b_IV[1];
v[10] = blake2b_IV[2];
v[11] = blake2b_IV[3];
v[12] = blake2b_IV[4] ^ S->t[0];
v[13] = blake2b_IV[5] ^ S->t[1];
v[14] = blake2b_IV[6] ^ S->f[0];
v[15] = blake2b_IV[7] ^ S->f[1];
ROUND( 0 );
ROUND( 1 );
ROUND( 2 );
ROUND( 3 );
ROUND( 4 );
ROUND( 5 );
ROUND( 6 );
ROUND( 7 );
ROUND( 8 );
ROUND( 9 );
ROUND( 10 );
ROUND( 11 );
for( i = 0; i < 8; ++i ) {
S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
}
}
#undef G
#undef ROUND
int blake2b_update( blake2b_state *S, const void *pin, size_t inlen )
{
const unsigned char * in = (const unsigned char *)pin;
if( inlen > 0 )
{
size_t left = S->buflen;
size_t fill = BLAKE2B_BLOCKBYTES - left;
if( inlen > fill )
{
S->buflen = 0;
memcpy( S->buf + left, in, fill ); /* Fill buffer */
blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
blake2b_compress( S, S->buf ); /* Compress */
in += fill; inlen -= fill;
while(inlen > BLAKE2B_BLOCKBYTES) {
blake2b_increment_counter(S, BLAKE2B_BLOCKBYTES);
blake2b_compress( S, in );
in += BLAKE2B_BLOCKBYTES;
inlen -= BLAKE2B_BLOCKBYTES;
}
}
memcpy( S->buf + S->buflen, in, inlen );
S->buflen += inlen;
}
return 0;
}
int blake2b_final( blake2b_state *S, void *out, size_t outlen )
{
uint8_t buffer[BLAKE2B_OUTBYTES] = {0};
size_t i;
if( out == NULL || outlen < S->outlen )
return -1;
if( blake2b_is_lastblock( S ) )
return -1;
blake2b_increment_counter( S, S->buflen );
blake2b_set_lastblock( S );
memset( S->buf + S->buflen, 0, BLAKE2B_BLOCKBYTES - S->buflen ); /* Padding */
blake2b_compress( S, S->buf );
for( i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
store64( buffer + sizeof( S->h[i] ) * i, S->h[i] );
memcpy( out, buffer, S->outlen );
secure_zero_memory(buffer, sizeof(buffer));
return 0;
}
/* inlen, at least, should be uint64_t. Others can be size_t. */
int blake2b( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen )
{
blake2b_state S[1];
/* Verify parameters */
if ( NULL == in && inlen > 0 ) return -1;
if ( NULL == out ) return -1;
if( NULL == key && keylen > 0 ) return -1;
if( !outlen || outlen > BLAKE2B_OUTBYTES ) return -1;
if( keylen > BLAKE2B_KEYBYTES ) return -1;
if( keylen > 0 )
{
if( blake2b_init_key( S, outlen, key, keylen ) < 0 ) return -1;
}
else
{
if( blake2b_init( S, outlen ) < 0 ) return -1;
}
blake2b_update( S, ( const uint8_t * )in, inlen );
blake2b_final( S, out, outlen );
return 0;
}
int blake2( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ) {
return blake2b(out, outlen, in, inlen, key, keylen);
}
#if defined(SUPERCOP)
int crypto_hash( unsigned char *out, unsigned char *in, unsigned long long inlen )
{
return blake2b( out, BLAKE2B_OUTBYTES, in, inlen, NULL, 0 );
}
#endif
#if defined(BLAKE2B_SELFTEST)
#include <string.h>
#include "blake2-kat.h"
int main( void )
{
uint8_t key[BLAKE2B_KEYBYTES];
uint8_t buf[BLAKE2_KAT_LENGTH];
size_t i, step;
for( i = 0; i < BLAKE2B_KEYBYTES; ++i )
key[i] = ( uint8_t )i;
for( i = 0; i < BLAKE2_KAT_LENGTH; ++i )
buf[i] = ( uint8_t )i;
/* Test simple API */
for( i = 0; i < BLAKE2_KAT_LENGTH; ++i )
{
uint8_t hash[BLAKE2B_OUTBYTES];
blake2b( hash, BLAKE2B_OUTBYTES, buf, i, key, BLAKE2B_KEYBYTES );
if( 0 != memcmp( hash, blake2b_keyed_kat[i], BLAKE2B_OUTBYTES ) )
{
goto fail;
}
}
/* Test streaming API */
for(step = 1; step < BLAKE2B_BLOCKBYTES; ++step) {
for (i = 0; i < BLAKE2_KAT_LENGTH; ++i) {
uint8_t hash[BLAKE2B_OUTBYTES];
blake2b_state S;
uint8_t * p = buf;
size_t mlen = i;
int err = 0;
if( (err = blake2b_init_key(&S, BLAKE2B_OUTBYTES, key, BLAKE2B_KEYBYTES)) < 0 ) {
goto fail;
}
while (mlen >= step) {
if ( (err = blake2b_update(&S, p, step)) < 0 ) {
goto fail;
}
mlen -= step;
p += step;
}
if ( (err = blake2b_update(&S, p, mlen)) < 0) {
goto fail;
}
if ( (err = blake2b_final(&S, hash, BLAKE2B_OUTBYTES)) < 0) {
goto fail;
}
if (0 != memcmp(hash, blake2b_keyed_kat[i], BLAKE2B_OUTBYTES)) {
goto fail;
}
}
}
puts( "ok" );
return 0;
fail:
puts("error");
return -1;
}
#endif

405
ext/blake2b_ext/blake2s-ref.c Executable file
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@ -0,0 +1,405 @@
/*
BLAKE2 reference source code package - reference C implementations
Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
your option. The terms of these licenses can be found at:
- CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
- OpenSSL license : https://www.openssl.org/source/license.html
- Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
More information about the BLAKE2 hash function can be found at
https://blake2.net.
*/
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include "blake2.h"
#include "blake2-impl.h"
static const uint32_t blake2s_IV[8] =
{
0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL,
0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL
};
static const uint8_t blake2s_sigma[10][16] =
{
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
{ 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 } ,
{ 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 } ,
{ 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 } ,
{ 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 } ,
{ 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 } ,
{ 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 } ,
{ 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 } ,
{ 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 } ,
{ 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 } ,
};
static inline int blake2s_set_lastnode( blake2s_state *S )
{
S->f[1] = -1;
return 0;
}
static inline int blake2s_clear_lastnode( blake2s_state *S )
{
S->f[1] = 0;
return 0;
}
/* Some helper functions, not necessarily useful */
static inline int blake2s_is_lastblock( const blake2s_state *S )
{
return S->f[0] != 0;
}
static inline int blake2s_set_lastblock( blake2s_state *S )
{
if( S->last_node ) blake2s_set_lastnode( S );
S->f[0] = -1;
return 0;
}
static inline int blake2s_clear_lastblock( blake2s_state *S )
{
if( S->last_node ) blake2s_clear_lastnode( S );
S->f[0] = 0;
return 0;
}
static inline int blake2s_increment_counter( blake2s_state *S, const uint32_t inc )
{
S->t[0] += inc;
S->t[1] += ( S->t[0] < inc );
return 0;
}
// Parameter-related functions
static inline int blake2s_param_set_digest_length( blake2s_param *P, const uint8_t digest_length )
{
P->digest_length = digest_length;
return 0;
}
static inline int blake2s_param_set_fanout( blake2s_param *P, const uint8_t fanout )
{
P->fanout = fanout;
return 0;
}
static inline int blake2s_param_set_max_depth( blake2s_param *P, const uint8_t depth )
{
P->depth = depth;
return 0;
}
static inline int blake2s_param_set_leaf_length( blake2s_param *P, const uint32_t leaf_length )
{
store32( &P->leaf_length, leaf_length );
return 0;
}
static inline int blake2s_param_set_node_offset( blake2s_param *P, const uint64_t node_offset )
{
store48( P->node_offset, node_offset );
return 0;
}
static inline int blake2s_param_set_node_depth( blake2s_param *P, const uint8_t node_depth )
{
P->node_depth = node_depth;
return 0;
}
static inline int blake2s_param_set_inner_length( blake2s_param *P, const uint8_t inner_length )
{
P->inner_length = inner_length;
return 0;
}
static inline int blake2s_param_set_salt( blake2s_param *P, const uint8_t salt[BLAKE2S_SALTBYTES] )
{
memcpy( P->salt, salt, BLAKE2S_SALTBYTES );
return 0;
}
static inline int blake2s_param_set_personal( blake2s_param *P, const uint8_t personal[BLAKE2S_PERSONALBYTES] )
{
memcpy( P->personal, personal, BLAKE2S_PERSONALBYTES );
return 0;
}
static inline int blake2s_init0( blake2s_state *S )
{
memset( S, 0, sizeof( blake2s_state ) );
for( int i = 0; i < 8; ++i ) S->h[i] = blake2s_IV[i];
return 0;
}
/* init2 xors IV with input parameter block */
int blake2s_init_param( blake2s_state *S, const blake2s_param *P )
{
blake2s_init0( S );
const uint32_t *p = ( const uint32_t * )( P );
/* IV XOR ParamBlock */
for( size_t i = 0; i < 8; ++i )
S->h[i] ^= load32( &p[i] );
return 0;
}
// Sequential blake2s initialization
int blake2s_init( blake2s_state *S, const uint8_t outlen )
{
blake2s_param P[1];
/* Move interval verification here? */
if ( ( !outlen ) || ( outlen > BLAKE2S_OUTBYTES ) ) return -1;
P->digest_length = outlen;
P->key_length = 0;
P->fanout = 1;
P->depth = 1;
store32( &P->leaf_length, 0 );
store48( &P->node_offset, 0 );
P->node_depth = 0;
P->inner_length = 0;
// memset(P->reserved, 0, sizeof(P->reserved) );
memset( P->salt, 0, sizeof( P->salt ) );
memset( P->personal, 0, sizeof( P->personal ) );
return blake2s_init_param( S, P );
}
int blake2s_init_key( blake2s_state *S, const uint8_t outlen, const void *key, const uint8_t keylen )
{
blake2s_param P[1];
if ( ( !outlen ) || ( outlen > BLAKE2S_OUTBYTES ) ) return -1;
if ( !key || !keylen || keylen > BLAKE2S_KEYBYTES ) return -1;
P->digest_length = outlen;
P->key_length = keylen;
P->fanout = 1;
P->depth = 1;
store32( &P->leaf_length, 0 );
store48( &P->node_offset, 0 );
P->node_depth = 0;
P->inner_length = 0;
// memset(P->reserved, 0, sizeof(P->reserved) );
memset( P->salt, 0, sizeof( P->salt ) );
memset( P->personal, 0, sizeof( P->personal ) );
if( blake2s_init_param( S, P ) < 0 ) return -1;
{
uint8_t block[BLAKE2S_BLOCKBYTES];
memset( block, 0, BLAKE2S_BLOCKBYTES );
memcpy( block, key, keylen );
blake2s_update( S, block, BLAKE2S_BLOCKBYTES );
secure_zero_memory( block, BLAKE2S_BLOCKBYTES ); /* Burn the key from stack */
}
return 0;
}
static int blake2s_compress( blake2s_state *S, const uint8_t block[BLAKE2S_BLOCKBYTES] )
{
uint32_t m[16];
uint32_t v[16];
for( size_t i = 0; i < 16; ++i )
m[i] = load32( block + i * sizeof( m[i] ) );
for( size_t i = 0; i < 8; ++i )
v[i] = S->h[i];
v[ 8] = blake2s_IV[0];
v[ 9] = blake2s_IV[1];
v[10] = blake2s_IV[2];
v[11] = blake2s_IV[3];
v[12] = S->t[0] ^ blake2s_IV[4];
v[13] = S->t[1] ^ blake2s_IV[5];
v[14] = S->f[0] ^ blake2s_IV[6];
v[15] = S->f[1] ^ blake2s_IV[7];
#define G(r,i,a,b,c,d) \
do { \
a = a + b + m[blake2s_sigma[r][2*i+0]]; \
d = rotr32(d ^ a, 16); \
c = c + d; \
b = rotr32(b ^ c, 12); \
a = a + b + m[blake2s_sigma[r][2*i+1]]; \
d = rotr32(d ^ a, 8); \
c = c + d; \
b = rotr32(b ^ c, 7); \
} while(0)
#define ROUND(r) \
do { \
G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
G(r,2,v[ 2],v[ 6],v[10],v[14]); \
G(r,3,v[ 3],v[ 7],v[11],v[15]); \
G(r,4,v[ 0],v[ 5],v[10],v[15]); \
G(r,5,v[ 1],v[ 6],v[11],v[12]); \
G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
} while(0)
ROUND( 0 );
ROUND( 1 );
ROUND( 2 );
ROUND( 3 );
ROUND( 4 );
ROUND( 5 );
ROUND( 6 );
ROUND( 7 );
ROUND( 8 );
ROUND( 9 );
for( size_t i = 0; i < 8; ++i )
S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
#undef G
#undef ROUND
return 0;
}
int blake2s_update( blake2s_state *S, const uint8_t *in, uint64_t inlen )
{
while( inlen > 0 )
{
size_t left = S->buflen;
size_t fill = 2 * BLAKE2S_BLOCKBYTES - left;
if( inlen > fill )
{
memcpy( S->buf + left, in, fill ); // Fill buffer
S->buflen += fill;
blake2s_increment_counter( S, BLAKE2S_BLOCKBYTES );
blake2s_compress( S, S->buf ); // Compress
memcpy( S->buf, S->buf + BLAKE2S_BLOCKBYTES, BLAKE2S_BLOCKBYTES ); // Shift buffer left
S->buflen -= BLAKE2S_BLOCKBYTES;
in += fill;
inlen -= fill;
}
else // inlen <= fill
{
memcpy( S->buf + left, in, inlen );
S->buflen += inlen; // Be lazy, do not compress
in += inlen;
inlen -= inlen;
}
}
return 0;
}
int blake2s_final( blake2s_state *S, uint8_t *out, uint8_t outlen )
{
uint8_t buffer[BLAKE2S_OUTBYTES] = {0};
if( out == NULL || outlen == 0 || outlen > BLAKE2S_OUTBYTES )
return -1;
if( blake2s_is_lastblock( S ) )
return -1;
if( S->buflen > BLAKE2S_BLOCKBYTES )
{
blake2s_increment_counter( S, BLAKE2S_BLOCKBYTES );
blake2s_compress( S, S->buf );
S->buflen -= BLAKE2S_BLOCKBYTES;
memcpy( S->buf, S->buf + BLAKE2S_BLOCKBYTES, S->buflen );
}
blake2s_increment_counter( S, ( uint32_t )S->buflen );
blake2s_set_lastblock( S );
memset( S->buf + S->buflen, 0, 2 * BLAKE2S_BLOCKBYTES - S->buflen ); /* Padding */
blake2s_compress( S, S->buf );
for( int i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
store32( buffer + sizeof( S->h[i] ) * i, S->h[i] );
memcpy( out, buffer, outlen );
return 0;
}
int blake2s( uint8_t *out, const void *in, const void *key, const uint8_t outlen, const uint64_t inlen, uint8_t keylen )
{
blake2s_state S[1];
/* Verify parameters */
if ( NULL == in && inlen > 0 ) return -1;
if ( NULL == out ) return -1;
if ( NULL == key && keylen > 0) return -1;
if( !outlen || outlen > BLAKE2S_OUTBYTES ) return -1;
if( keylen > BLAKE2S_KEYBYTES ) return -1;
if( keylen > 0 )
{
if( blake2s_init_key( S, outlen, key, keylen ) < 0 ) return -1;
}
else
{
if( blake2s_init( S, outlen ) < 0 ) return -1;
}
blake2s_update( S, ( const uint8_t * )in, inlen );
blake2s_final( S, out, outlen );
return 0;
}
#if defined(SUPERCOP)
int crypto_hash( unsigned char *out, unsigned char *in, unsigned long long inlen )
{
return blake2s( out, in, NULL, BLAKE2S_OUTBYTES, inlen, 0 );
}
#endif
#if defined(BLAKE2S_SELFTEST)
#include <string.h>
#include "blake2-kat.h"
int main( int argc, char **argv )
{
uint8_t key[BLAKE2S_KEYBYTES];
uint8_t buf[KAT_LENGTH];
for( size_t i = 0; i < BLAKE2S_KEYBYTES; ++i )
key[i] = ( uint8_t )i;
for( size_t i = 0; i < KAT_LENGTH; ++i )
buf[i] = ( uint8_t )i;
for( size_t i = 0; i < KAT_LENGTH; ++i )
{
uint8_t hash[BLAKE2S_OUTBYTES];
blake2s( hash, buf, key, BLAKE2S_OUTBYTES, i, BLAKE2S_KEYBYTES );
if( 0 != memcmp( hash, blake2s_keyed_kat[i], BLAKE2S_OUTBYTES ) )
{
puts( "error" );
return -1;
}
}
puts( "ok" );
return 0;
}
#endif

3
ext/blake2b_ext/extconf.rb Executable file
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@ -0,0 +1,3 @@
require 'mkmf'
$CFLAGS += ' -std=c99'
create_makefile 'blake2b_ext'

108
ext/blake2b_ext/rbext.c Executable file
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@ -0,0 +1,108 @@
#include <ruby/ruby.h>
#include <ruby/encoding.h>
#include "blake2.h"
typedef struct {
uint8_t key_length;
uint8_t *key_bytes;
uint8_t output_length;
uint8_t *output;
VALUE to_hex;
VALUE to_bytes;
} Blake2;
VALUE cBlake2;
static void blake2_free(Blake2 *blake2) {
free(blake2->key_bytes);
free(blake2->output);
rb_gc_mark(blake2->to_hex);
rb_gc_mark(blake2->to_bytes);
ruby_xfree(blake2);
}
static VALUE blake2_alloc(VALUE klass) {
Blake2 *blake2_obj = (Blake2 *)ruby_xmalloc(sizeof(Blake2));
return Data_Wrap_Struct(klass, NULL, blake2_free, blake2_obj);
}
VALUE m_blake2_initialize(VALUE self, VALUE _len, VALUE _key) {
Blake2 *blake2;
Data_Get_Struct(self, Blake2, blake2);
int i;
ID bytes_method = rb_intern("bytes");
blake2->to_hex = ID2SYM(rb_intern("to_hex"));
blake2->to_bytes = ID2SYM(rb_intern("to_bytes"));
VALUE key_bytes_ary = rb_funcall(_key, bytes_method, 0);
blake2->key_length = RARRAY_LEN(key_bytes_ary);
blake2->key_bytes = (uint8_t*)malloc(blake2->key_length * sizeof(uint8_t));
for(i = 0; i < blake2->key_length; i++) {
VALUE byte = rb_ary_entry(key_bytes_ary, i);
blake2->key_bytes[i] = NUM2INT(byte);
}
blake2->output_length = NUM2INT(_len);
blake2->output = (uint8_t*)malloc(blake2->output_length * sizeof(uint8_t));
return Qnil;
}
VALUE m_blake2_digest(VALUE self, VALUE _input, VALUE _representation) {
Blake2 *blake2;
char *input = RSTRING_PTR(_input);
int input_length = RSTRING_LEN(_input);
int i;
Data_Get_Struct(self, Blake2, blake2);
blake2b(blake2->output, input, blake2->key_bytes,
blake2->output_length, input_length, blake2->key_length);
VALUE result;
if(_representation == blake2->to_bytes) {
result = rb_ary_new2(blake2->output_length);
for(i = 0; i < blake2->output_length; i++) {
rb_ary_push(result, INT2NUM(blake2->output[i]));
}
} else if(_representation == blake2->to_hex) {
int ary_len = blake2->output_length * sizeof(char) * 2;
char *c_str = (char*)malloc(ary_len + 1);
for(i = 0; i < blake2->output_length; i++) {
sprintf(c_str + (i * 2), "%02x", blake2->output[i]);
}
c_str[ary_len] = 0;
result = rb_str_new(c_str, ary_len);
if(RSTRING_LEN(result) != ary_len) {
rb_raise(rb_eRuntimeError, "m_blake2_digest: sizes don't match. Ary: %d != %d", RSTRING_LEN(result), ary_len);
}
free(c_str);
} else {
rb_raise(rb_eArgError, "unknown representation :%"PRIsVALUE"", _representation);
}
return result;
}
void Init_blake2_ext() {
cBlake2 = rb_define_class("Blake2b", rb_cObject);
rb_define_alloc_func(cBlake2, blake2_alloc);
rb_define_private_method(cBlake2, "initialize", RUBY_METHOD_FUNC(m_blake2_initialize), 2);
rb_define_method(cBlake2, "digest", RUBY_METHOD_FUNC(m_blake2_digest), 2);
}

29
lib/blake2b.rb Executable file
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require 'blake2b_ext'
require 'blake2b/key'
class Blake2b
def self.hex(input, key = Blake2::Key.none, out_len = 32)
check_if_valid!(input, key, out_len)
Blake2b.new(out_len, key).digest(input, :to_hex)
end
def self.bytes(input, key = Blake2::Key.none, out_len = 32)
check_if_valid!(input, key, out_len)
Blake2b.new(out_len, key).digest(input, :to_bytes)
end
def self.check_if_valid!(input, key, out_len)
unless input.is_a?(String)
raise ArgumentError, 'input arg must be a String'
end
unless key.is_a?(Blake2::Key)
raise ArgumentError, 'key arg must be a Blake2b::Key'
end
unless out_len.is_a?(Integer) && out_len.between?(1, 32)
raise ArgumentError, 'out_len arg must be an Integer between 1 and 32 inclusive'
end
end
private_class_method :check_if_valid!
end

55
lib/blake2b/key.rb Executable file
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class Blake2b
# Validate and normalize an HMAC key, provided in different formats,
# into an Array of Integer Bytes.
class Key
attr_reader :bytes
def initialize(bytes)
@bytes = bytes
end
# Create a blank Key
#
# @return [Blake2b::Key] a Blake2::Key object with a `bytes` attr
def self.none
new([])
end
# Create a key from an ASCII String
#
# @param str [String] an ASCII String key
# @return [Blake2b::Key] a Blake2::Key object with a `bytes` attr
def self.from_string(str)
if str.is_a?(String) && str.ascii_only?
new(str.bytes)
else
raise ArgumentError, 'key must be an ASCII String'
end
end
# Create a key from a Hex String [a-fA-F0-9]
#
# @param str [String] a Hex String key
# @return [Blake2b::Key] a Blake2::Key object with a `bytes` attr
def self.from_hex(str)
if str.is_a?(String) && str.match(/^[a-fA-F0-9]+$/)
new([str].pack('H*').bytes)
else
raise ArgumentError, 'key must be a Hex String [a-fA-F0-9]'
end
end
# Create a key from Array of Integer (0-255) Bytes.
# This simply validates and passes through the Array.
#
# @param str [Array] an Array of Integer (0-255) Bytes
# @return [Blake2b::Key] a Blake2b::Key object with a `bytes` attr
def self.from_bytes(bytes)
if bytes.all? { |b| b.is_a?(Integer) && b.between?(0, 255) }
new(bytes)
else
raise ArgumentError, 'key must be a Byte Array of Integers (0-255)'
end
end
end
end

42
test/blake2/key_test.rb Executable file
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require 'test_helper'
class KeyTest < MiniTest::Test
def test_none
key = Blake2::Key.none
assert_equal [], key.bytes
end
def test_from_string
key = Blake2::Key.from_string('foo bar baz')
assert_equal [102, 111, 111, 32, 98, 97, 114, 32, 98, 97, 122], key.bytes
end
def test_from_string_raises_on_non_ascii_string
assert_raises(ArgumentError) { Blake2::Key.from_string('💩') }
end
def test_from_hex
key = Blake2::Key.from_hex('DEADBEAF')
assert_equal [222, 173, 190, 175], key.bytes
end
def test_from_hex_raises_on_non_hex_string
assert_raises(ArgumentError) { Blake2::Key.from_hex('DEADBEAFZZ') }
end
def test_from_bytes_hex
key = Blake2::Key.from_bytes([0xDE, 0xAD, 0xBE, 0xAF])
assert_equal [222, 173, 190, 175], key.bytes
end
def test_from_bytes_int
key = Blake2::Key.from_bytes([222, 173, 190, 175])
assert_equal [222, 173, 190, 175], key.bytes
end
def test_from_hex_raises_on_non_valid_byte_array
assert_raises(ArgumentError) { Blake2::Key.from_bytes([-1]) }
assert_raises(ArgumentError) { Blake2::Key.from_bytes([256]) }
assert_raises(ArgumentError) { Blake2::Key.from_bytes(['foo']) }
end
end

60
test/blake2b_api_test.rb Executable file
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require 'test_helper'
class Blake2bTest < MiniTest::Test
def test_hex_with_input_only
res = Blake2b.hex('abc')
assert_kind_of String, res
assert_equal '508c5e8c327c14e2e1a72ba34eeb452f37458b209ed63a294d999b4c86675982', res
end
def test_hex_with_input_and_key
res = Blake2b.hex('abc', Blake2b::Key.none)
assert_kind_of String, res
assert_equal '508c5e8c327c14e2e1a72ba34eeb452f37458b209ed63a294d999b4c86675982', res
end
def test_hex_with_input_key_and_length
res = Blake2b.hex('abc', Blake2b::Key.none, 32)
assert_kind_of String, res
assert_equal '508c5e8c327c14e2e1a72ba34eeb452f37458b209ed63a294d999b4c86675982', res
end
def test_bytes_with_input_only
res = Blake2b.bytes('abc')
assert_kind_of Array, res
assert_equal [80, 140, 94, 140, 50, 124, 20, 226, 225, 167, 43, 163, 78, 235, 69, 47, 55, 69, 139, 32, 158, 214, 58, 41, 77, 153, 155, 76, 134, 103, 89, 130], res
end
def test_bytes_with_input_and_key
res = Blake2b.bytes('abc', Blake2b::Key.none)
assert_kind_of Array, res
assert_equal [80, 140, 94, 140, 50, 124, 20, 226, 225, 167, 43, 163, 78, 235, 69, 47, 55, 69, 139, 32, 158, 214, 58, 41, 77, 153, 155, 76, 134, 103, 89, 130], res
end
def test_bytes_with_input_key_and_length
res = Blake2b.bytes('abc', Blake2b::Key.none, 32)
assert_kind_of Array, res
assert_equal [80, 140, 94, 140, 50, 124, 20, 226, 225, 167, 43, 163, 78, 235, 69, 47, 55, 69, 139, 32, 158, 214, 58, 41, 77, 153, 155, 76, 134, 103, 89, 130], res
end
def test_input_raises_on_non_string
assert_raises(ArgumentError) { Blake2b.hex(nil) }
assert_raises(ArgumentError) { Blake2b.bytes(nil) }
end
def test_key_raises_on_non_key
assert_raises(ArgumentError) { Blake2b.hex('abc', []) }
assert_raises(ArgumentError) { Blake2b.bytes('abc', []) }
end
def test_length_raises_on_invalid
assert_raises(ArgumentError) { Blake2b.hex('abc', Blake2b::Key.none, -1) }
assert_raises(ArgumentError) { Blake2b.hex('abc', Blake2b::Key.none, 0) }
assert_raises(ArgumentError) { Blake2b.hex('abc', Blake2b::Key.none, 33) }
assert_raises(ArgumentError) { Blake2b.hex('abc', Blake2b::Key.none, '32') }
assert_raises(ArgumentError) { Blake2b.bytes('abc', Blake2b::Key.none, -1) }
assert_raises(ArgumentError) { Blake2b.bytes('abc', Blake2b::Key.none, 0) }
assert_raises(ArgumentError) { Blake2b.bytes('abc', Blake2b::Key.none, 33) }
assert_raises(ArgumentError) { Blake2b.bytes('abc', Blake2b::Key.none, '32') }
end
end

25
test/blake2b_test.rb Executable file
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require 'test_helper'
class Blake2bTest < MiniTest::Test
def setup
out_len = 32
key = Blake2b::Key.from_string('foo bar baz')
@digestor = Blake2b.new(out_len, key)
@input = 'hello world'
@expected = '95670379036532875f58bf23fbcb549675b656bd639a6124a614ccd8a980b180'
end
def test_to_hex
res = @digestor.digest(@input, :to_hex)
assert_kind_of String, res
assert_equal @expected, res
end
def test_to_bytes
res = @digestor.digest(@input, :to_bytes)
assert_kind_of Array, res
assert_equal [@expected].pack('H*').bytes, res
end
end

593
test/blake2b_vector_test.rb Executable file
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# rubocop:disable MethodLength, ClassLength, WordArray, LineLength
require 'test_helper'
# These test vectors are taken from blake2s-js npm package
# https://github.com/dchest/blake2s-js/blob/master/test/test.js
#
class Blake2bVectorTest < MiniTest::Test
def setup
@golden = [
'69217a3079908094e11121d042354a7c1f55b6482ca1a51e1b250dfd1ed0eef9',
'e34d74dbaf4ff4c6abd871cc220451d2ea2648846c7757fbaac82fe51ad64bea',
'ddad9ab15dac4549ba42f49d262496bef6c0bae1dd342a8808f8ea267c6e210c',
'e8f91c6ef232a041452ab0e149070cdd7dd1769e75b3a5921be37876c45c9900',
'0cc70e00348b86ba2944d0c32038b25c55584f90df2304f55fa332af5fb01e20',
'ec1964191087a4fe9df1c795342a02ffc191a5b251764856ae5b8b5769f0c6cd',
'e1fa51618d7df4eb70cf0d5a9e906f806e9d19f7f4f01e3b621288e4120405d6',
'598001fafbe8f94ec66dc827d012cfcbba2228569f448e89ea2208c8bf769293',
'c7e887b546623635e93e0495598f1726821996c2377705b93a1f636f872bfa2d',
'c315a437dd28062a770d481967136b1b5eb88b21ee53d0329c5897126e9db02c',
'bb473deddc055fea6228f207da575347bb00404cd349d38c18026307a224cbff',
'687e1873a8277591bb33d9adf9a13912efefe557cafc39a7952623e47255f16d',
'1ac7ba754d6e2f94e0e86c46bfb262abbb74f450ef456d6b4d97aa80ce6da767',
'012c97809614816b5d9494477d4b687d15b96eb69c0e8074a8516f31224b5c98',
'91ffd26cfa4da5134c7ea262f7889c329f61f6a657225cc212f40056d986b3f4',
'd97c828d8182a72180a06a78268330673f7c4e0635947c04c02323fd45c0a52d',
'efc04cdc391c7e9119bd38668a534e65fe31036d6a62112e44ebeb11f9c57080',
'992cf5c053442a5fbc4faf583e04e50bb70d2f39fbb6a503f89e56a63e18578a',
'38640e9f21983e67b539caccae5ecf615ae2764f75a09c9c59b76483c1fbc735',
'213dd34c7efe4fb27a6b35f6b4000d1fe03281af3c723e5c9f94747a5f31cd3b',
'ec246eeeb9ced3f7ad33ed28660dd9bb0732513db4e2fa278b60cde3682a4ccd',
'ac9b61d446648c3005d7892bf3a8719f4c8181cfdcbc2b79fef10a279b911095',
'7bf8b22959e34e3a43f7079223e83a9754617d391e213dfd808e41b9bead4ce7',
'68d4b5d4fa0e302b64ccc5af792913ac4c88ec95c07ddf40694256eb88ce9f3d',
'b2c2420f05f9abe36315919336b37e4e0fa33ff7e76a492767006fdb5d935462',
'134f61bbd0bbb69aed5343904551a3e6c1aa7dcdd77e903e7023eb7c60320aa7',
'4693f9bff7d4f3986a7d176e6e06f72ad1490d805c99e25347b8de77b4db6d9b',
'853e26f741953b0fd5bdb424e8ab9e8b3750eaa8ef61e47902c91e554e9c73b9',
'f7de536361abaa0e158156cf0ea4f63a99b5e4054f8fa4c9d45f6285cad55694',
'4c230608860a99ae8d7bd5c2cc17fa52096b9a61bedb17cb7617864ad29ca7a6',
'aeb920ea87952dadb1fb759291e3388139a872865001886ed84752e93c250c2a',
'aba4ad9b480b9df3d08ca5e87b0c2440d4e4ea21224c2eb42cbae469d089b931',
'05825607d7fdf2d82ef4c3c8c2aea961ad98d60edff7d018983e21204c0d93d1',
'a742f8b6af82d8a6ca2357c5f1cf91defbd066267d75c048b352366585025962',
'2bcac89599000b42c95ae23835a713704ed79789c84fef149a874ff733f017a2',
'ac1ed07d048f105a9e5b7ab85b09a492d5baff14b8bfb0e9fd789486eea2b974',
'e48d0ecfaf497d5b27c25d99e156cb0579d440d6e31fb62473696dbf95e010e4',
'12a91fadf8b21644fd0f934f3c4a8f62ba862ffd20e8e961154c15c13884ed3d',
'7cbee96e139897dc98fbef3be81ad4d964d235cb12141fb66727e6e5df73a878',
'ebf66abb597ae572a7297cb0871e355accafad8377b8e78bf164ce2a18de4baf',
'71b933b07e4ff7818ce059d008829e453c6ff02ec0a7db393fc2d870f37a7286',
'7cf7c51331220b8d3ebaed9c29398a16d98156e2613cb088f2b0e08a1be4cf4f',
'3e41a108e0f64ad276b979e1ce068279e16f7bc7e4aa1d211e17b81161df1602',
'886502a82ab47ba8d86710aa9de3d46ea65c47af6ee8de450cceb8b11b045f50',
'c021bc5f0954fee94f46ea09487e10a84840d02f64810bc08d9e551f7d416814',
'2030516e8a5fe19ae79c336fce26382a749d3fd0ec91e537d4bd2358c12dfb22',
'556698dac8317fd36dfbdf25a79cb112d5425860605cbaf507f23bf7e9f42afe',
'2f867ba67773fdc3e92fced99a6409ad39d0b880fde8f109a81730c4451d0178',
'172ec218f119dfae98896dff29dd9876c94af87417f9ae4c7014bb4e4b96afc7',
'3f85814a18195f879aa962f95d26bd82a278f2b82320218f6b3bd6f7f667a6d9',
'1b618fbaa566b3d498c12e982c9ec52e4da85a8c54f38f34c090394f23c184c1',
'0c758fb5692ffd41a3575d0af00cc7fbf2cbe5905a58323a88ae4244f6e4c993',
'a931360cad628c7f12a6c1c4b753b0f4062aef3ce65a1ae3f19369dadf3ae23d',
'cbac7d773b1e3b3c6691d7abb7e9df045c8ba19268ded153207f5e804352ec5d',
'23a196d3802ed3c1b384019a82325840d32f71950c4580b03445e0898e14053c',
'f4495470f226c8c214be08fdfad4bc4a2a9dbea9136a210df0d4b64929e6fc14',
'e290dd270b467f34ab1c002d340fa016257ff19e5833fdbbf2cb401c3b2817de',
'9fc7b5ded3c15042b2a6582dc39be016d24a682d5e61ad1eff9c63309848f706',
'8cca67a36d17d5e6341cb592fd7bef9926c9e3aa1027ea11a7d8bd260b576e04',
'409392f560f86831da4373ee5e0074260595d7bc24183b60ed700d4583d3f6f0',
'2802165de090915546f3398cd849164a19f92adbc361adc99b0f20c8ea071054',
'ad839168d9f8a4be95ba9ef9a692f07256ae43fe6f9864e290691b0256ce50a9',
'75fdaa5038c284b86d6e8affe8b2807e467b86600e79af3689fbc06328cbf894',
'e57cb79487dd57902432b250733813bd96a84efce59f650fac26e6696aefafc3',
'56f34e8b96557e90c1f24b52d0c89d51086acf1b00f634cf1dde9233b8eaaa3e',
'1b53ee94aaf34e4b159d48de352c7f0661d0a40edff95a0b1639b4090e974472',
'05705e2a81757c14bd383ea98dda544eb10e6bc07bae435e2518dbe133525375',
'd8b2866e8a309db53e529ec32911d82f5ca16cff76216891a9676aa31aaa6c42',
'f5041c241270eb04c71ec2c95d4c38d803b1237b0f29fd4db3eb397669e88699',
'9a4ce077c349322f595e0ee79ed0da5fab66752cbfef8f87d0e9d0723c7530dd',
'657b09f3d0f52b5b8f2f97163a0edf0c04f075408a07bbeb3a4101a891990d62',
'1e3f7bd5a58fa533344aa8ed3ac122bb9e70d4ef50d004530821948f5fe6315a',
'80dccf3fd83dfd0d35aa28585922ab89d5313997673eaf905cea9c0b225c7b5f',
'8a0d0fbf6377d83bb08b514b4b1c43acc95d751714f8925645cb6bc856ca150a',
'9fa5b487738ad2844cc6348a901918f659a3b89e9c0dfeead30dd94bcf42ef8e',
'80832c4a1677f5ea2560f668e9354dd36997f03728cfa55e1b38337c0c9ef818',
'ab37ddb683137e74080d026b590b96ae9bb447722f305a5ac570ec1df9b1743c',
'3ee735a694c2559b693aa68629361e15d12265ad6a3dedf488b0b00fac9754ba',
'd6fcd23219b647e4cbd5eb2d0ad01ec8838a4b2901fc325cc3701981ca6c888b',
'0520ec2f5bf7a755dacb50c6bf233e3515434763db0139ccd9faefbb8207612d',
'aff3b75f3f581264d7661662b92f5ad37c1d32bd45ff81a4ed8adc9ef30dd989',
'd0dd650befd3ba63dc25102c627c921b9cbeb0b130686935b5c927cb7ccd5e3b',
'e1149816b10a8514fb3e2cab2c08bee9f73ce76221701246a589bbb67302d8a9',
'7da3f441de9054317e72b5dbf979da01e6bceebb8478eae6a22849d90292635c',
'1230b1fc8a7d9215edc2d4a2decbdd0a6e216c924278c91fc5d10e7d60192d94',
'5750d716b4808f751febc38806ba170bf6d5199a7816be514e3f932fbe0cb871',
'6fc59b2f10feba954aa6820b3ca987ee81d5cc1da3c63ce827301c569dfb39ce',
'c7c3fe1eebdc7b5a939326e8ddb83e8bf2b780b65678cb62f208b040abdd35e2',
'0c75c1a15cf34a314ee478f4a5ce0b8a6b36528ef7a820696c3e4246c5a15864',
'216dc12a108569a3c7cdde4aed43a6c330139dda3ccc4a108905db3861899050',
'a57be6ae6756f28b02f59dadf7e0d7d8807f10fa15ced1ad3585521a1d995a89',
'816aef875953716cd7a581f732f53dd435dab66d09c361d2d6592de17755d8a8',
'9a76893226693b6ea97e6a738f9d10fb3d0b43ae0e8b7d8123ea76ce97989c7e',
'8daedb9a271529dbb7dc3b607fe5eb2d3211770758dd3b0a3593d2d7954e2d5b',
'16dbc0aa5dd2c774f505100f733786d8a175fcbbb59c43e1fbff3e1eaf31cb4a',
'8606cb899c6aeaf51b9db0fe4924a9fd5dabc19f8826f2bc1c1d7da14d2c2c99',
'8479731aeda57bd37eadb51a507e307f3bd95e69dbca94f3bc21726066ad6dfd',
'58473a9ea82efa3f3b3d8fc83ed8863127b33ae8deae6307201edb6dde61de29',
'9a9255d53af116de8ba27ce35b4c7e15640657a0fcb888c70d95431dacd8f830',
'9eb05ffba39fd8596a45493e18d2510bf3ef065c51d6e13abe66aa57e05cfdb7',
'81dcc3a505eace3f879d8f702776770f9df50e521d1428a85daf04f9ad2150e0',
'e3e3c4aa3acbbc85332af9d564bc24165e1687f6b1adcbfae77a8f03c72ac28c',
'6746c80b4eb56aea45e64e7289bba3edbf45ecf8206481ff6302122984cd526a',
'2b628e52764d7d62c0868b212357cdd12d9149822f4e9845d918a08d1ae990c0',
'e4bfe80d58c91994613909dc4b1a12496896c004af7b5701483de45d2823d78e',
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'16b18ab314359c2b833c1c6986d48c55a9fc97cde9a3c1f10a3177140f73f738',
'8cbbdd14bc33f04cf45813e4a153a273d36adad5ce71f499eeb87fb8ac63b729',
'69c9a498db174ecaefcc5a3ac9fdedf0f813a5bec727f1e775babdec7718816e',
'b462c3be40448f1d4f80626254e535b08bc9cdcff599a768578d4b2881a8e3f0',
'553e9d9c5f360ac0b74a7d44e5a391dad4ced03e0c24183b7e8ecabdf1715a64',
'7a7c55a56fa9ae51e655e01975d8a6ff4ae9e4b486fcbe4eac044588f245ebea',
'2afdf3c82abc4867f5de111286c2b3be7d6e48657ba923cfbf101a6dfcf9db9a',
'41037d2edcdce0c49b7fb4a6aa0999ca66976c7483afe631d4eda283144f6dfc',
'c4466f8497ca2eeb4583a0b08e9d9ac74395709fda109d24f2e4462196779c5d',
'75f609338aa67d969a2ae2a2362b2da9d77c695dfd1df7224a6901db932c3364',
'68606ceb989d5488fc7cf649f3d7c272ef055da1a93faecd55fe06f6967098ca',
'44346bdeb7e052f6255048f0d9b42c425bab9c3dd24168212c3ecf1ebf34e6ae',
'8e9cf6e1f366471f2ac7d2ee9b5e6266fda71f8f2e4109f2237ed5f8813fc718',
'84bbeb8406d250951f8c1b3e86a7c010082921833dfd9555a2f909b1086eb4b8',
'ee666f3eef0f7e2a9c222958c97eaf35f51ced393d714485ab09a069340fdf88',
'c153d34a65c47b4a62c5cacf24010975d0356b2f32c8f5da530d338816ad5de6',
'9fc5450109e1b779f6c7ae79d56c27635c8dd426c5a9d54e2578db989b8c3b4e',
'd12bf3732ef4af5c22fa90356af8fc50fcb40f8f2ea5c8594737a3b3d5abdbd7',
'11030b9289bba5af65260672ab6fee88b87420acef4a1789a2073b7ec2f2a09e',
'69cb192b8444005c8c0ceb12c846860768188cda0aec27a9c8a55cdee2123632',
'db444c15597b5f1a03d1f9edd16e4a9f43a667cc275175dfa2b704e3bb1a9b83',
'3fb735061abc519dfe979e54c1ee5bfad0a9d858b3315bad34bde999efd724dd'
]
end
def test_unkeyed
(0..255).each do |i|
buf = []
j = 0
while j < i
buf << (j & 0xff)
j += 1
end
res = Blake2b.new(32, Blake2b::Key.none).digest(bytes_to_string(buf), :to_hex)
assert_kind_of String, res
assert_equal @golden[i], res
end
end
def test_keyed_with_string
key = (0..31).map { |i| i }
(0..255).each do |i|
buf = []
j = 0
while j < i
buf << (j & 0xff)
j += 1
end
res = Blake2b.new(32, Blake2b::Key.from_string(bytes_to_string(key))).digest(bytes_to_string(buf), :to_hex)
assert_kind_of String, res
assert_equal @golden_keyed[i], res
end
end
def test_keyed_with_hex
key = (0..31).map { |i| i }
key_hex = bytes_to_hex(key)
(0..255).each do |i|
buf = []
j = 0
while j < i
buf << (j & 0xff)
j += 1
end
res = Blake2b.new(32, Blake2b::Key.from_hex(key_hex)).digest(bytes_to_string(buf), :to_hex)
assert_kind_of String, res
assert_equal @golden_keyed[i], res
end
end
# utility methods
#################
def bytes_to_string(bytes)
bytes.pack('C*')
end
def bytes_to_hex(bytes)
hex = ''
bytes.each { |b| hex += sprintf('%02x', b) }
hex.downcase
end
end

9
test/performance/blake2b_gc_test.rb Executable file
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require 'test_helper'
class Blake2bGCTest < MiniTest::Test
def test_a_million_iteration
1_000_000.times do |i|
Blake2b.new(32, Blake2b::Key.none).digest('abc', :to_hex)
end
end
end

3
test/test_helper.rb Executable file
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require 'minitest/autorun'
require 'minitest/assertions'
require 'blake2b'