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util/sha256x: rename Hash as Block512 (#5351)

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Rename Hash as Block512 to indicate that this is a general-purpose
hash.Hash for any algorithm that operates on 512-bit block sizes.

While we rename the package as hashx in this commit,
a subsequent commit will move the sha256x package to hashx.
This is done separately to avoid confusing git.

Signed-off-by: Joe Tsai <joetsai@digital-static.net>
This commit is contained in:
Joe Tsai
2022-08-16 09:49:48 -07:00
committed by GitHub
parent 44d62b65d0
commit f061d20c9d
4 changed files with 106 additions and 72 deletions
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util/sha256x/sha256_test.go
+12 -11
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@@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package sha256x
package hashx
import (
"crypto/sha256"
@@ -12,6 +12,7 @@ import (
"testing"
qt "github.com/frankban/quicktest"
"tailscale.com/util/must"
)
// naiveHash is an obviously correct implementation of Hash.
@@ -74,7 +75,7 @@ func hashSuite(h hasher) {
func Test(t *testing.T) {
c := qt.New(t)
h1 := New()
h1 := must.Get(New512(sha256.New()))
h2 := newNaive()
hashSuite(h1)
hashSuite(h2)
@@ -84,44 +85,44 @@ func Test(t *testing.T) {
func TestAllocations(t *testing.T) {
c := qt.New(t)
c.Run("Sum", func(c *qt.C) {
h := New()
h := must.Get(New512(sha256.New()))
c.Assert(testing.AllocsPerRun(100, func() {
var a [sha256.Size]byte
h.Sum(a[:0])
}), qt.Equals, 0.0)
})
c.Run("HashUint8", func(c *qt.C) {
h := New()
h := must.Get(New512(sha256.New()))
c.Assert(testing.AllocsPerRun(100, func() {
h.HashUint8(0x01)
}), qt.Equals, 0.0)
})
c.Run("HashUint16", func(c *qt.C) {
h := New()
h := must.Get(New512(sha256.New()))
c.Assert(testing.AllocsPerRun(100, func() {
h.HashUint16(0x0123)
}), qt.Equals, 0.0)
})
c.Run("HashUint32", func(c *qt.C) {
h := New()
h := must.Get(New512(sha256.New()))
c.Assert(testing.AllocsPerRun(100, func() {
h.HashUint32(0x01234567)
}), qt.Equals, 0.0)
})
c.Run("HashUint64", func(c *qt.C) {
h := New()
h := must.Get(New512(sha256.New()))
c.Assert(testing.AllocsPerRun(100, func() {
h.HashUint64(0x0123456789abcdef)
}), qt.Equals, 0.0)
})
c.Run("HashBytes", func(c *qt.C) {
h := New()
h := must.Get(New512(sha256.New()))
c.Assert(testing.AllocsPerRun(100, func() {
h.HashBytes(bytes)
}), qt.Equals, 0.0)
})
c.Run("HashString", func(c *qt.C) {
h := New()
h := must.Get(New512(sha256.New()))
c.Assert(testing.AllocsPerRun(100, func() {
h.HashString("abcdefghijklmnopqrstuvwxyz")
}), qt.Equals, 0.0)
@@ -158,7 +159,7 @@ func Fuzz(f *testing.F) {
r1 := rand.New(rand.NewSource(seed))
r2 := rand.New(rand.NewSource(seed))
h1 := New()
h1 := must.Get(New512(sha256.New()))
h2 := newNaive()
execute(h1, r1)
@@ -185,7 +186,7 @@ func Benchmark(b *testing.B) {
var sum [sha256.Size]byte
b.Run("Hash", func(b *testing.B) {
b.ReportAllocs()
h := New()
h := must.Get(New512(sha256.New()))
for i := 0; i < b.N; i++ {
h.Reset()
hashSuite(h)