Курнат Андрей
29 lines
628 B
Go
29 lines
628 B
Go
package keyfunc
|
|
|
|
import (
|
|
"fmt"
|
|
)
|
|
|
|
const (
|
|
// ktyOct is the key type (kty) in the JWT header for oct.
|
|
ktyOct = "oct"
|
|
)
|
|
|
|
// Oct parses a jsonWebKey and turns it into a raw byte slice (octet). This includes HMAC keys.
|
|
func (j *jsonWebKey) Oct() (publicKey []byte, err error) {
|
|
if j.K == "" {
|
|
return nil, fmt.Errorf("%w: %s", ErrMissingAssets, ktyOct)
|
|
}
|
|
|
|
// Decode the octet key from Base64.
|
|
//
|
|
// According to RFC 7517, this is Base64 URL bytes.
|
|
// https://datatracker.ietf.org/doc/html/rfc7517#section-1.1
|
|
publicKey, err = base64urlTrailingPadding(j.K)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return publicKey, nil
|
|
}
|