[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/jcmturner/gokrb5/v8/types/Authenticator.go b/vendor/github.com/jcmturner/gokrb5/v8/types/Authenticator.go
new file mode 100644
index 0000000..1fdba78
--- /dev/null
+++ b/vendor/github.com/jcmturner/gokrb5/v8/types/Authenticator.go
@@ -0,0 +1,81 @@
+// Package types provides Kerberos 5 data types.
+package types
+
+import (
+ "crypto/rand"
+ "fmt"
+ "math"
+ "math/big"
+ "time"
+
+ "github.com/jcmturner/gofork/encoding/asn1"
+ "github.com/jcmturner/gokrb5/v8/asn1tools"
+ "github.com/jcmturner/gokrb5/v8/iana"
+ "github.com/jcmturner/gokrb5/v8/iana/asnAppTag"
+)
+
+// Authenticator - A record containing information that can be shown to have been recently generated using the session
+// key known only by the client and server.
+// https://tools.ietf.org/html/rfc4120#section-5.5.1
+type Authenticator struct {
+ AVNO int `asn1:"explicit,tag:0"`
+ CRealm string `asn1:"generalstring,explicit,tag:1"`
+ CName PrincipalName `asn1:"explicit,tag:2"`
+ Cksum Checksum `asn1:"explicit,optional,tag:3"`
+ Cusec int `asn1:"explicit,tag:4"`
+ CTime time.Time `asn1:"generalized,explicit,tag:5"`
+ SubKey EncryptionKey `asn1:"explicit,optional,tag:6"`
+ SeqNumber int64 `asn1:"explicit,optional,tag:7"`
+ AuthorizationData AuthorizationData `asn1:"explicit,optional,tag:8"`
+}
+
+// NewAuthenticator creates a new Authenticator.
+func NewAuthenticator(realm string, cname PrincipalName) (Authenticator, error) {
+ seq, err := rand.Int(rand.Reader, big.NewInt(math.MaxUint32))
+ if err != nil {
+ return Authenticator{}, err
+ }
+ t := time.Now().UTC()
+ return Authenticator{
+ AVNO: iana.PVNO,
+ CRealm: realm,
+ CName: cname,
+ Cksum: Checksum{},
+ Cusec: int((t.UnixNano() / int64(time.Microsecond)) - (t.Unix() * 1e6)),
+ CTime: t,
+ SeqNumber: seq.Int64(),
+ }, nil
+}
+
+// GenerateSeqNumberAndSubKey sets the Authenticator's sequence number and subkey.
+func (a *Authenticator) GenerateSeqNumberAndSubKey(keyType int32, keySize int) error {
+ seq, err := rand.Int(rand.Reader, big.NewInt(math.MaxUint32))
+ if err != nil {
+ return err
+ }
+ a.SeqNumber = seq.Int64()
+ //Generate subkey value
+ sk := make([]byte, keySize, keySize)
+ rand.Read(sk)
+ a.SubKey = EncryptionKey{
+ KeyType: keyType,
+ KeyValue: sk,
+ }
+ return nil
+}
+
+// Unmarshal bytes into the Authenticator.
+func (a *Authenticator) Unmarshal(b []byte) error {
+ _, err := asn1.UnmarshalWithParams(b, a, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.Authenticator))
+ return err
+}
+
+// Marshal the Authenticator.
+func (a *Authenticator) Marshal() ([]byte, error) {
+ b, err := asn1.Marshal(*a)
+ if err != nil {
+ return nil, err
+ }
+ b = asn1tools.AddASNAppTag(b, asnAppTag.Authenticator)
+ return b, nil
+}