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8 Commits
Author SHA1 Message Date
David Symonds 1fbbd62cfe crypto: add import comments. 
Change-Id: I33240faf1b8620d0cd600de661928d8e422ebdbc
Reviewed-on: https://go-review.googlesource.com/1235
Reviewed-by: Andrew Gerrand <adg@golang.org>
 2014-12-09 23:26:36 +00:00
Ian Lance Taylor cb7a96fa34 sha3: change range statement in test to work with Go 1.3 and earlier 
LGTM=bradfitz
R=agl, bradfitz
CC=golang-codereviews
https://golang.org/cl/157930043
 2014-10-13 14:14:22 -07:00
Eric Roshan-Eisner 9b55b542f6 go.crypto/sha3: optimize round function 
benchmark                        old ns/op     new ns/op     delta
BenchmarkPermutationFunction     1128          733           -35.02%
BenchmarkShake256_1MiB           10004381      6832715       -31.70%

benchmark                        old MB/s     new MB/s     speedup
BenchmarkPermutationFunction     177.23       272.54       1.54x
BenchmarkShake256_1MiB           104.81       153.46       1.46x

LGTM=agl
R=golang-codereviews, agl
CC=golang-codereviews
https://golang.org/cl/156770043
 2014-10-08 10:57:02 -07:00
Adam Langley 82442e0e95 go.crypto/sha3: use the go1.4 tag to register the hash functions. 
Prior to Go 1.4, crypto didn't have the consts defined for SHA-3.

LGTM=bradfitz
R=bradfitz
CC=golang-codereviews
https://golang.org/cl/133540043
 2014-09-03 16:08:25 -07:00
David Leon Gil 1b32d8b50a go.crypto/sha3: update to sync with draft FIPS-202 
1. API:

This exposes a minimal API: the SHA-3 functions implement hash.Hash. The
SHAKE functions implement a new "ShakeHash" interface that implements
io.Reader, io.Writer, and Reset().

(The previous Barrier() function has been removed.)

(Alternative proposal: Don't implement io.Reader, but instead provide a
"Digest(d []byte) error" function that performs a hash.Hash style copy.
Somewhat more minimal, but very easy to use incorrectly.)

2. Tests

Added the complete set of ShortMsgKATs from
   https://github.com/gvanas/KeccakCodePackage

3. Correctness

In sync with draft FIPS-202.

4. Documentation

A summary of the security properties of the SHA-3 and SHAKE functions is
provided in doc.go; some concrete recommendations as well.

Fixes 8563.

R=golang-codereviews, agl
CC=golang-codereviews
https://golang.org/cl/130950043
 2014-09-03 12:04:00 -07:00
Eric Roshan-Eisner d52ec73510 go.crypto/sha3: change keccakF to stateless function 
Taken from my implementation: https://bitbucket.org/ede/sha3
Performance gain from using less memory and more registers.

benchmark                       old ns/op    new ns/op    delta
BenchmarkPermutationFunction         1484         1118  -24.66%
BenchmarkBulkKeccak512             374993       295178  -21.28%
BenchmarkBulkKeccak256             215496       172335  -20.03%

benchmark                        old MB/s     new MB/s  speedup
BenchmarkPermutationFunction       134.76       178.80    1.33x
BenchmarkBulkKeccak512              43.69        55.51    1.27x
BenchmarkBulkKeccak256              76.03        95.07    1.25x

R=jcb, agl
CC=golang-dev, nigeltao
https://golang.org/cl/8088044
 2013-04-02 10:41:35 -04:00
Nigel Tao 44f6c2e4a2 go.crypto/sha3: fix typo; remove 4 million map lookups (5% of "go test" 
time); delete some comments that didn't add much and were incorrect
anyway (the test specification was tc, not t).

R=jcb
CC=agl, golang-dev
https://golang.org/cl/7665045
 2013-03-23 10:10:15 +11:00
Joseph Bonneau 0bc0bccba9 go.crypto/sha3: new package 
Added a pure Go implementation of SHA3 (Keccak) which implements the hash.Hash interface.
A test file is included with performance benchmarks and standard test vectors.

R=agl, nigeltao
CC=golang-dev
https://golang.org/cl/7760044
 2013-03-22 14:59:59 -04:00