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added method to get the secret out

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This commit is contained in:
Michael Robinson 2017-12-03 15:43:51 -07:00
parent 70189459df
commit 92de2f4a0e
No known key found for this signature in database
GPG Key ID: 6F638229E56CC245
1 changed files with 13 additions and 4 deletions
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17
totp.go
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@ -12,16 +12,17 @@ import (
"encoding/hex"
"errors"
"fmt"
"github.com/sec51/convert"
"github.com/sec51/convert/bigendian"
"github.com/sec51/cryptoengine"
qr "github.com/sec51/qrcode"
"hash"
"io"
"math"
"net/url"
"strconv"
"time"
"github.com/sec51/convert"
"github.com/sec51/convert/bigendian"
"github.com/sec51/cryptoengine"
qr "github.com/sec51/qrcode"
)
const (
@ -270,6 +271,14 @@ func calculateToken(counter []byte, digits int, h hash.Hash) string {
return fmt.Sprintf(fmtStr, mod)
}
// Secret returns the underlying base32 encoded secret.
// This should only be displayed the first time a user enables 2FA,
// and should be transmitted over a secure connection.
// Useful for supporting TOTP clients that don't support QR scanning.
func (otp *Totp) Secret() string {
return base32.StdEncoding.EncodeToString(otp.key)
}
// URL returns a suitable URL, such as for the Google Authenticator app
// example: otpauth://totp/Example:alice@google.com?secret=JBSWY3DPEHPK3PXP&issuer=Example
func (otp *Totp) url() (string, error) {