1 files changed, 0 insertions, 60 deletions
diff --git a/crypto/sha3/shake.go b/crypto/sha3/shake.go
deleted file mode 100644
index 841f9860f..000000000
--- a/crypto/sha3/shake.go
+++ /dev/null
@@ -1,60 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package sha3
-
-// This file defines the ShakeHash interface, and provides
-// functions for creating SHAKE instances, as well as utility
-// functions for hashing bytes to arbitrary-length output.
-
-import (
-	"io"
-)
-
-// ShakeHash defines the interface to hash functions that
-// support arbitrary-length output.
-type ShakeHash interface {
-	// Write absorbs more data into the hash's state. It panics if input is
-	// written to it after output has been read from it.
-	io.Writer
-
-	// Read reads more output from the hash; reading affects the hash's
-	// state. (ShakeHash.Read is thus very different from Hash.Sum)
-	// It never returns an error.
-	io.Reader
-
-	// Clone returns a copy of the ShakeHash in its current state.
-	Clone() ShakeHash
-
-	// Reset resets the ShakeHash to its initial state.
-	Reset()
-}
-
-func (d *state) Clone() ShakeHash {
-	return d.clone()
-}
-
-// NewShake128 creates a new SHAKE128 variable-output-length ShakeHash.
-// Its generic security strength is 128 bits against all attacks if at
-// least 32 bytes of its output are used.
-func NewShake128() ShakeHash { return &state{rate: 168, dsbyte: 0x1f} }
-
-// NewShake256 creates a new SHAKE128 variable-output-length ShakeHash.
-// Its generic security strength is 256 bits against all attacks if
-// at least 64 bytes of its output are used.
-func NewShake256() ShakeHash { return &state{rate: 136, dsbyte: 0x1f} }
-
-// ShakeSum128 writes an arbitrary-length digest of data into hash.
-func ShakeSum128(hash, data []byte) {
-	h := NewShake128()
-	h.Write(data)
-	h.Read(hash)
-}
-
-// ShakeSum256 writes an arbitrary-length digest of data into hash.
-func ShakeSum256(hash, data []byte) {
-	h := NewShake256()
-	h.Write(data)
-	h.Read(hash)
-}