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Basic functionality for HOTP, TOTP, and YubiKey OTP. Still need YubiKey
HMAC, serialisation, check, and scan.
This commit is contained in:
Kyle Isom
2013-12-20 17:00:01 -07:00
parent 1dec15fd11
commit 0982f47ce3
9 changed files with 386 additions and 29 deletions
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20
oath.go
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@@ -13,8 +13,8 @@ import (
const defaultSize = 6
// oath provides a baseline struct for the two OATH algorithms.
type oath struct {
// OATH provides a baseline structure for the two OATH algorithms.
type OATH struct {
key []byte
counter uint64
size int
@@ -23,27 +23,27 @@ type oath struct {
provider string
}
func (o oath) Size() int {
func (o OATH) Size() int {
return o.size
}
func (o oath) Counter() uint64 {
func (o OATH) Counter() uint64 {
return o.counter
}
func (o oath) SetCounter(counter uint64) {
func (o OATH) SetCounter(counter uint64) {
o.counter = counter
}
func (o oath) Key() []byte {
func (o OATH) Key() []byte {
return o.key[:]
}
func (o oath) Hash() func() hash.Hash {
func (o OATH) Hash() func() hash.Hash {
return o.hash
}
func (o oath) URL(t Type, label string) string {
func (o OATH) URL(t Type, label string) string {
secret := base32.StdEncoding.EncodeToString(o.key)
u := url.URL{}
v := url.Values{}
@@ -96,7 +96,7 @@ var digits = []int64{
// The top-level type should provide a counter; for example, HOTP
// will provide the counter directly while TOTP will provide the
// time-stepped counter.
func (o oath) OTP(counter uint64) string {
func (o OATH) OTP(counter uint64) string {
var ctr [8]byte
binary.BigEndian.PutUint64(ctr[:], counter)
@@ -132,7 +132,7 @@ func truncate(in []byte) int64 {
// QR generates a byte slice containing the a QR code encoded as a
// PNG with level Q error correction.
func (o oath) QR(t Type, label string) ([]byte, error) {
func (o OATH) QR(t Type, label string) ([]byte, error) {
u := o.URL(t, label)
code, err := qr.Encode(u, qr.Q)
if err != nil {