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Update documentation in tsig

This commit is contained in:
Miek Gieben 2011-03-23 19:07:06 +01:00
parent be6f2365cb
commit bbbf71363b
1 changed files with 10 additions and 8 deletions
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18
tsig.go
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@ -1,7 +1,5 @@
package dns
// Implementation of TSIG: generation and validation
// RFC 2845 and RFC 4635
import (
"io"
"os"
@ -11,15 +9,17 @@ import (
"encoding/hex"
)
// Return os.Error with real tsig errors
// Structure used in Read/Write lowlevel functions
// for TSIG generation and verification.
// Structure used in Read/Write functions to
// add or remove a TSIG on a dns message. See RFC 2845
// and RFC 4635.
type Tsig struct {
// The name of the key.
Name string
// Fudge to take into account.
Fudge uint16
// When is the TSIG created
TimeSigned uint64
// Which algorithm is used.
Algorithm string
// Tsig secret encoded in base64.
Secret string
@ -27,7 +27,7 @@ type Tsig struct {
MAC string
// Request MAC
RequestMAC string
// Only include the timers if true.
// Only include the timers in the MAC if set to true.
TimersOnly bool
}
@ -114,6 +114,8 @@ func (t *Tsig) Generate(msg []byte) ([]byte, os.Error) {
// Verify a TSIG on a message. All relevant data should
// be set in the Tsig structure.
// If the signature does not validate err contains the
// error. If the it validates...
func (t *Tsig) Verify(msg []byte) (bool, os.Error) {
rawsecret, err := packBase64([]byte(t.Secret))
if err != nil {
@ -138,7 +140,7 @@ func (t *Tsig) Verify(msg []byte) (bool, os.Error) {
return strings.ToUpper(hex.EncodeToString(h.Sum())) == strings.ToUpper(t.MAC), nil
}
// Create a wiredata buffer for the MAC calculation
// Create a wiredata buffer for the MAC calculation.
func (t *Tsig) Buffer(msg []byte) ([]byte, os.Error) {
var (
macbuf []byte