diff --git a/vendor/gopkg.in/jcmturner/gokrb5.v7/crypto/etype/etype.go b/vendor/gopkg.in/jcmturner/gokrb5.v7/crypto/etype/etype.go
new file mode 100644
index 0000000..ee7510e
--- /dev/null
+++ b/vendor/gopkg.in/jcmturner/gokrb5.v7/crypto/etype/etype.go
@@ -0,0 +1,29 @@
+// Package etype provides the Kerberos Encryption Type interface
+package etype
+
+import "hash"
+
+// EType is the interface defining the Encryption Type.
+type EType interface {
+	GetETypeID() int32
+	GetHashID() int32
+	GetKeyByteSize() int
+	GetKeySeedBitLength() int                                   // key-generation seed length, k
+	GetDefaultStringToKeyParams() string                        // default string-to-key parameters (s2kparams)
+	StringToKey(string, salt, s2kparams string) ([]byte, error) // string-to-key (UTF-8 string, UTF-8 string, opaque)->(protocol-key)
+	RandomToKey(b []byte) []byte                                // random-to-key (bitstring[K])->(protocol-key)
+	GetHMACBitLength() int                                      // HMAC output size, h
+	GetMessageBlockByteSize() int                               // message block size, m
+	EncryptData(key, data []byte) ([]byte, []byte, error)       // E function - encrypt (specific-key, state, octet string)->(state, octet string)
+	EncryptMessage(key, message []byte, usage uint32) ([]byte, []byte, error)
+	DecryptData(key, data []byte) ([]byte, error) // D function
+	DecryptMessage(key, ciphertext []byte, usage uint32) ([]byte, error)
+	GetCypherBlockBitLength() int                           // cipher block size, c
+	GetConfounderByteSize() int                             // This is the same as the cipher block size but in bytes.
+	DeriveKey(protocolKey, usage []byte) ([]byte, error)    // DK key-derivation (protocol-key, integer)->(specific-key)
+	DeriveRandom(protocolKey, usage []byte) ([]byte, error) // DR pseudo-random (protocol-key, octet-string)->(octet-string)
+	VerifyIntegrity(protocolKey, ct, pt []byte, usage uint32) bool
+	GetChecksumHash(protocolKey, data []byte, usage uint32) ([]byte, error)
+	VerifyChecksum(protocolKey, data, chksum []byte, usage uint32) bool
+	GetHashFunc() func() hash.Hash
+}