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keccak
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Gofmt.

master
magical 2014-12-31 23:59:40 -08:00
parent e7f1f3541f
commit 7b01515ff6
2 changed files with 17 additions and 17 deletions
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16
gen.go
View File

@ -24,13 +24,13 @@ func main() {
// Rotation constants // Rotation constants
x, y := 1, 0 x, y := 1, 0
for i := 1; i < 25; i++ { for i := 1; i < 25; i++ {
rotc[x][y] = (i*(i+1)/2) % 64 rotc[x][y] = (i * (i + 1) / 2) % 64
x, y = y, (2*x+3*y)%5 x, y = y, (2*x+3*y)%5
} }
var ctx = struct { var ctx = struct {
Rotc [5][5]int Rotc [5][5]int
} { }{
rotc, rotc,
} }
err := tmpl.Execute(os.Stdout, &ctx) err := tmpl.Execute(os.Stdout, &ctx)
@ -41,14 +41,14 @@ func main() {
func count(n int) []int { func count(n int) []int {
var out = make([]int, n) var out = make([]int, n)
for i := 0; i < n; i ++ { for i := 0; i < n; i++ {
out[i] = i out[i] = i
} }
return out return out
} }
func add(a, b, m int) int { func add(a, b, m int) int {
return (a+b) % m return (a + b) % m
} }
func sub(a, b int) int { func sub(a, b int) int {
@ -56,14 +56,14 @@ func sub(a, b int) int {
} }
func mul(a, b int) int { func mul(a, b int) int {
return a*b return a * b
} }
var funcs = template.FuncMap{ var funcs = template.FuncMap{
"count": count, "count": count,
"add": add, "add": add,
"sub": sub, "sub": sub,
"mul": mul, "mul": mul,
} }
var tmpl = template.Must(template.New("keccak").Funcs(funcs).Parse(` var tmpl = template.Must(template.New("keccak").Funcs(funcs).Parse(`

18
sponge.go
View File

@ -10,18 +10,18 @@ var round = roundGo
// digest implements hash.Hash // digest implements hash.Hash
type digest struct { type digest struct {
a [5][5]uint64 // a[y][x][z] a [5][5]uint64 // a[y][x][z]
buf [200]byte buf [200]byte
dsbyte byte dsbyte byte
len int len int
size int size int
} }
func New256() hash.Hash { return &digest{size: 256/8, dsbyte: 0x06} } func New256() hash.Hash { return &digest{size: 256 / 8, dsbyte: 0x06} }
func New512() hash.Hash { return &digest{size: 512/8, dsbyte: 0x06} } func New512() hash.Hash { return &digest{size: 512 / 8, dsbyte: 0x06} }
func newKeccak256() hash.Hash { return &digest{size: 256/8, dsbyte: 0x01} } func newKeccak256() hash.Hash { return &digest{size: 256 / 8, dsbyte: 0x01} }
func newKeccak512() hash.Hash { return &digest{size: 512/8, dsbyte: 0x01} } func newKeccak512() hash.Hash { return &digest{size: 512 / 8, dsbyte: 0x01} }
func (d *digest) Size() int { return d.size } func (d *digest) Size() int { return d.size }
func (d *digest) BlockSize() int { return 200 - d.size*2 } func (d *digest) BlockSize() int { return 200 - d.size*2 }
@ -40,7 +40,7 @@ func (d *digest) Write(b []byte) (int, error) {
n := copy(d.buf[d.len:bs], b) n := copy(d.buf[d.len:bs], b)
d.len += n d.len += n
b = b[n:] b = b[n:]
if d.len == bs { if d.len == bs {
d.flush() d.flush()
} }
} }