diff --git a/vendor/gopkg.in/jcmturner/gokrb5.v7/pac/credentials_info.go b/vendor/gopkg.in/jcmturner/gokrb5.v7/pac/credentials_info.go
new file mode 100644
index 0000000..a8c2c3c
--- /dev/null
+++ b/vendor/gopkg.in/jcmturner/gokrb5.v7/pac/credentials_info.go
@@ -0,0 +1,86 @@
+package pac
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+
+	"gopkg.in/jcmturner/gokrb5.v7/crypto"
+	"gopkg.in/jcmturner/gokrb5.v7/iana/keyusage"
+	"gopkg.in/jcmturner/gokrb5.v7/types"
+	"gopkg.in/jcmturner/rpc.v1/mstypes"
+	"gopkg.in/jcmturner/rpc.v1/ndr"
+)
+
+// https://msdn.microsoft.com/en-us/library/cc237931.aspx
+
+// CredentialsInfo implements https://msdn.microsoft.com/en-us/library/cc237953.aspx
+type CredentialsInfo struct {
+	Version                    uint32 // A 32-bit unsigned integer in little-endian format that defines the version. MUST be 0x00000000.
+	EType                      uint32
+	PACCredentialDataEncrypted []byte // Key usage number for encryption: KERB_NON_KERB_SALT (16)
+	PACCredentialData          CredentialData
+}
+
+// Unmarshal bytes into the CredentialsInfo struct
+func (c *CredentialsInfo) Unmarshal(b []byte, k types.EncryptionKey) (err error) {
+	//The CredentialsInfo structure is a simple structure that is not NDR-encoded.
+	r := mstypes.NewReader(bytes.NewReader(b))
+
+	c.Version, err = r.Uint32()
+	if err != nil {
+		return
+	}
+	if c.Version != 0 {
+		err = errors.New("credentials info version is not zero")
+		return
+	}
+	c.EType, err = r.Uint32()
+	if err != nil {
+		return
+	}
+	c.PACCredentialDataEncrypted, err = r.ReadBytes(len(b) - 8)
+
+	err = c.DecryptEncPart(k)
+	if err != nil {
+		err = fmt.Errorf("error decrypting PAC Credentials Data: %v", err)
+		return
+	}
+	return
+}
+
+// DecryptEncPart decrypts the encrypted part of the CredentialsInfo.
+func (c *CredentialsInfo) DecryptEncPart(k types.EncryptionKey) error {
+	if k.KeyType != int32(c.EType) {
+		return fmt.Errorf("key provided is not the correct type. Type needed: %d, type provided: %d", c.EType, k.KeyType)
+	}
+	pt, err := crypto.DecryptMessage(c.PACCredentialDataEncrypted, k, keyusage.KERB_NON_KERB_SALT)
+	if err != nil {
+		return err
+	}
+	err = c.PACCredentialData.Unmarshal(pt)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// CredentialData implements https://msdn.microsoft.com/en-us/library/cc237952.aspx
+// This structure is encrypted prior to being encoded in any other structures.
+// Encryption is performed by first serializing the data structure via Network Data Representation (NDR) encoding, as specified in [MS-RPCE].
+// Once serialized, the data is encrypted using the key and cryptographic system selected through the AS protocol and the KRB_AS_REP message
+// Fields (for capturing this information) and cryptographic parameters are specified in PAC_CREDENTIAL_INFO (section 2.6.1).
+type CredentialData struct {
+	CredentialCount uint32
+	Credentials     []SECPKGSupplementalCred // Size is the value of CredentialCount
+}
+
+// Unmarshal converts the bytes provided into a CredentialData type.
+func (c *CredentialData) Unmarshal(b []byte) (err error) {
+	dec := ndr.NewDecoder(bytes.NewReader(b))
+	err = dec.Decode(c)
+	if err != nil {
+		err = fmt.Errorf("error unmarshaling KerbValidationInfo: %v", err)
+	}
+	return
+}