vendor, crypto, swarm: switch over to upstream sha3 package

15 files changed, 0 insertions, 1670 deletions

diff --git a/crypto/sha3/LICENSE b/crypto/sha3/LICENSE
deleted file mode 100644
index 6a66aea5e..000000000
--- a/crypto/sha3/LICENSE
+++ /dev/null
@@ -1,27 +0,0 @@
-Copyright (c) 2009 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/crypto/sha3/PATENTS b/crypto/sha3/PATENTS
deleted file mode 100644
index 733099041..000000000
--- a/crypto/sha3/PATENTS
+++ /dev/null
@@ -1,22 +0,0 @@
-Additional IP Rights Grant (Patents)
-
-"This implementation" means the copyrightable works distributed by
-Google as part of the Go project.
-
-Google hereby grants to You a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable (except as stated in this section)
-patent license to make, have made, use, offer to sell, sell, import,
-transfer and otherwise run, modify and propagate the contents of this
-implementation of Go, where such license applies only to those patent
-claims, both currently owned or controlled by Google and acquired in
-the future, licensable by Google that are necessarily infringed by this
-implementation of Go.  This grant does not include claims that would be
-infringed only as a consequence of further modification of this
-implementation.  If you or your agent or exclusive licensee institute or
-order or agree to the institution of patent litigation against any
-entity (including a cross-claim or counterclaim in a lawsuit) alleging
-that this implementation of Go or any code incorporated within this
-implementation of Go constitutes direct or contributory patent
-infringement, or inducement of patent infringement, then any patent
-rights granted to you under this License for this implementation of Go
-shall terminate as of the date such litigation is filed.
diff --git a/crypto/sha3/doc.go b/crypto/sha3/doc.go
deleted file mode 100644
index 3dab530f8..000000000
--- a/crypto/sha3/doc.go
+++ /dev/null
@@ -1,66 +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 implements the SHA-3 fixed-output-length hash functions and
-// the SHAKE variable-output-length hash functions defined by FIPS-202.
-//
-// Both types of hash function use the "sponge" construction and the Keccak
-// permutation. For a detailed specification see http://keccak.noekeon.org/
-//
-//
-// Guidance
-//
-// If you aren't sure what function you need, use SHAKE256 with at least 64
-// bytes of output. The SHAKE instances are faster than the SHA3 instances;
-// the latter have to allocate memory to conform to the hash.Hash interface.
-//
-// If you need a secret-key MAC (message authentication code), prepend the
-// secret key to the input, hash with SHAKE256 and read at least 32 bytes of
-// output.
-//
-//
-// Security strengths
-//
-// The SHA3-x (x equals 224, 256, 384, or 512) functions have a security
-// strength against preimage attacks of x bits. Since they only produce "x"
-// bits of output, their collision-resistance is only "x/2" bits.
-//
-// The SHAKE-256 and -128 functions have a generic security strength of 256 and
-// 128 bits against all attacks, provided that at least 2x bits of their output
-// is used.  Requesting more than 64 or 32 bytes of output, respectively, does
-// not increase the collision-resistance of the SHAKE functions.
-//
-//
-// The sponge construction
-//
-// A sponge builds a pseudo-random function from a public pseudo-random
-// permutation, by applying the permutation to a state of "rate + capacity"
-// bytes, but hiding "capacity" of the bytes.
-//
-// A sponge starts out with a zero state. To hash an input using a sponge, up
-// to "rate" bytes of the input are XORed into the sponge's state. The sponge
-// is then "full" and the permutation is applied to "empty" it. This process is
-// repeated until all the input has been "absorbed". The input is then padded.
-// The digest is "squeezed" from the sponge in the same way, except that output
-// output is copied out instead of input being XORed in.
-//
-// A sponge is parameterized by its generic security strength, which is equal
-// to half its capacity; capacity + rate is equal to the permutation's width.
-// Since the KeccakF-1600 permutation is 1600 bits (200 bytes) wide, this means
-// that the security strength of a sponge instance is equal to (1600 - bitrate) / 2.
-//
-//
-// Recommendations
-//
-// The SHAKE functions are recommended for most new uses. They can produce
-// output of arbitrary length. SHAKE256, with an output length of at least
-// 64 bytes, provides 256-bit security against all attacks.  The Keccak team
-// recommends it for most applications upgrading from SHA2-512. (NIST chose a
-// much stronger, but much slower, sponge instance for SHA3-512.)
-//
-// The SHA-3 functions are "drop-in" replacements for the SHA-2 functions.
-// They produce output of the same length, with the same security strengths
-// against all attacks. This means, in particular, that SHA3-256 only has
-// 128-bit collision resistance, because its output length is 32 bytes.
-package sha3
diff --git a/crypto/sha3/hashes.go b/crypto/sha3/hashes.go
deleted file mode 100644
index fa0d7b436..000000000
--- a/crypto/sha3/hashes.go
+++ /dev/null
@@ -1,71 +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 provides functions for creating instances of the SHA-3
-// and SHAKE hash functions, as well as utility functions for hashing
-// bytes.
-
-import (
-	"hash"
-)
-
-// NewKeccak256 creates a new Keccak-256 hash.
-func NewKeccak256() hash.Hash { return &state{rate: 136, outputLen: 32, dsbyte: 0x01} }
-
-// NewKeccak512 creates a new Keccak-512 hash.
-func NewKeccak512() hash.Hash { return &state{rate: 72, outputLen: 64, dsbyte: 0x01} }
-
-// New224 creates a new SHA3-224 hash.
-// Its generic security strength is 224 bits against preimage attacks,
-// and 112 bits against collision attacks.
-func New224() hash.Hash { return &state{rate: 144, outputLen: 28, dsbyte: 0x06} }
-
-// New256 creates a new SHA3-256 hash.
-// Its generic security strength is 256 bits against preimage attacks,
-// and 128 bits against collision attacks.
-func New256() hash.Hash { return &state{rate: 136, outputLen: 32, dsbyte: 0x06} }
-
-// New384 creates a new SHA3-384 hash.
-// Its generic security strength is 384 bits against preimage attacks,
-// and 192 bits against collision attacks.
-func New384() hash.Hash { return &state{rate: 104, outputLen: 48, dsbyte: 0x06} }
-
-// New512 creates a new SHA3-512 hash.
-// Its generic security strength is 512 bits against preimage attacks,
-// and 256 bits against collision attacks.
-func New512() hash.Hash { return &state{rate: 72, outputLen: 64, dsbyte: 0x06} }
-
-// Sum224 returns the SHA3-224 digest of the data.
-func Sum224(data []byte) (digest [28]byte) {
-	h := New224()
-	h.Write(data)
-	h.Sum(digest[:0])
-	return
-}
-
-// Sum256 returns the SHA3-256 digest of the data.
-func Sum256(data []byte) (digest [32]byte) {
-	h := New256()
-	h.Write(data)
-	h.Sum(digest[:0])
-	return
-}
-
-// Sum384 returns the SHA3-384 digest of the data.
-func Sum384(data []byte) (digest [48]byte) {
-	h := New384()
-	h.Write(data)
-	h.Sum(digest[:0])
-	return
-}
-
-// Sum512 returns the SHA3-512 digest of the data.
-func Sum512(data []byte) (digest [64]byte) {
-	h := New512()
-	h.Write(data)
-	h.Sum(digest[:0])
-	return
-}
diff --git a/crypto/sha3/keccakf.go b/crypto/sha3/keccakf.go
deleted file mode 100644
index 46d03ed38..000000000
--- a/crypto/sha3/keccakf.go
+++ /dev/null
@@ -1,412 +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.
-
-//  +build !amd64 appengine gccgo
-
-package sha3
-
-// rc stores the round constants for use in the ι step.
-var rc = [24]uint64{
-	0x0000000000000001,
-	0x0000000000008082,
-	0x800000000000808A,
-	0x8000000080008000,
-	0x000000000000808B,
-	0x0000000080000001,
-	0x8000000080008081,
-	0x8000000000008009,
-	0x000000000000008A,
-	0x0000000000000088,
-	0x0000000080008009,
-	0x000000008000000A,
-	0x000000008000808B,
-	0x800000000000008B,
-	0x8000000000008089,
-	0x8000000000008003,
-	0x8000000000008002,
-	0x8000000000000080,
-	0x000000000000800A,
-	0x800000008000000A,
-	0x8000000080008081,
-	0x8000000000008080,
-	0x0000000080000001,
-	0x8000000080008008,
-}
-
-// keccakF1600 applies the Keccak permutation to a 1600b-wide
-// state represented as a slice of 25 uint64s.
-func keccakF1600(a *[25]uint64) {
-	// Implementation translated from Keccak-inplace.c
-	// in the keccak reference code.
-	var t, bc0, bc1, bc2, bc3, bc4, d0, d1, d2, d3, d4 uint64
-
-	for i := 0; i < 24; i += 4 {
-		// Combines the 5 steps in each round into 2 steps.
-		// Unrolls 4 rounds per loop and spreads some steps across rounds.
-
-		// Round 1
-		bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20]
-		bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21]
-		bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22]
-		bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23]
-		bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24]
-		d0 = bc4 ^ (bc1<<1 | bc1>>63)
-		d1 = bc0 ^ (bc2<<1 | bc2>>63)
-		d2 = bc1 ^ (bc3<<1 | bc3>>63)
-		d3 = bc2 ^ (bc4<<1 | bc4>>63)
-		d4 = bc3 ^ (bc0<<1 | bc0>>63)
-
-		bc0 = a[0] ^ d0
-		t = a[6] ^ d1
-		bc1 = t<<44 | t>>(64-44)
-		t = a[12] ^ d2
-		bc2 = t<<43 | t>>(64-43)
-		t = a[18] ^ d3
-		bc3 = t<<21 | t>>(64-21)
-		t = a[24] ^ d4
-		bc4 = t<<14 | t>>(64-14)
-		a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i]
-		a[6] = bc1 ^ (bc3 &^ bc2)
-		a[12] = bc2 ^ (bc4 &^ bc3)
-		a[18] = bc3 ^ (bc0 &^ bc4)
-		a[24] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[10] ^ d0
-		bc2 = t<<3 | t>>(64-3)
-		t = a[16] ^ d1
-		bc3 = t<<45 | t>>(64-45)
-		t = a[22] ^ d2
-		bc4 = t<<61 | t>>(64-61)
-		t = a[3] ^ d3
-		bc0 = t<<28 | t>>(64-28)
-		t = a[9] ^ d4
-		bc1 = t<<20 | t>>(64-20)
-		a[10] = bc0 ^ (bc2 &^ bc1)
-		a[16] = bc1 ^ (bc3 &^ bc2)
-		a[22] = bc2 ^ (bc4 &^ bc3)
-		a[3] = bc3 ^ (bc0 &^ bc4)
-		a[9] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[20] ^ d0
-		bc4 = t<<18 | t>>(64-18)
-		t = a[1] ^ d1
-		bc0 = t<<1 | t>>(64-1)
-		t = a[7] ^ d2
-		bc1 = t<<6 | t>>(64-6)
-		t = a[13] ^ d3
-		bc2 = t<<25 | t>>(64-25)
-		t = a[19] ^ d4
-		bc3 = t<<8 | t>>(64-8)
-		a[20] = bc0 ^ (bc2 &^ bc1)
-		a[1] = bc1 ^ (bc3 &^ bc2)
-		a[7] = bc2 ^ (bc4 &^ bc3)
-		a[13] = bc3 ^ (bc0 &^ bc4)
-		a[19] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[5] ^ d0
-		bc1 = t<<36 | t>>(64-36)
-		t = a[11] ^ d1
-		bc2 = t<<10 | t>>(64-10)
-		t = a[17] ^ d2
-		bc3 = t<<15 | t>>(64-15)
-		t = a[23] ^ d3
-		bc4 = t<<56 | t>>(64-56)
-		t = a[4] ^ d4
-		bc0 = t<<27 | t>>(64-27)
-		a[5] = bc0 ^ (bc2 &^ bc1)
-		a[11] = bc1 ^ (bc3 &^ bc2)
-		a[17] = bc2 ^ (bc4 &^ bc3)
-		a[23] = bc3 ^ (bc0 &^ bc4)
-		a[4] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[15] ^ d0
-		bc3 = t<<41 | t>>(64-41)
-		t = a[21] ^ d1
-		bc4 = t<<2 | t>>(64-2)
-		t = a[2] ^ d2
-		bc0 = t<<62 | t>>(64-62)
-		t = a[8] ^ d3
-		bc1 = t<<55 | t>>(64-55)
-		t = a[14] ^ d4
-		bc2 = t<<39 | t>>(64-39)
-		a[15] = bc0 ^ (bc2 &^ bc1)
-		a[21] = bc1 ^ (bc3 &^ bc2)
-		a[2] = bc2 ^ (bc4 &^ bc3)
-		a[8] = bc3 ^ (bc0 &^ bc4)
-		a[14] = bc4 ^ (bc1 &^ bc0)
-
-		// Round 2
-		bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20]
-		bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21]
-		bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22]
-		bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23]
-		bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24]
-		d0 = bc4 ^ (bc1<<1 | bc1>>63)
-		d1 = bc0 ^ (bc2<<1 | bc2>>63)
-		d2 = bc1 ^ (bc3<<1 | bc3>>63)
-		d3 = bc2 ^ (bc4<<1 | bc4>>63)
-		d4 = bc3 ^ (bc0<<1 | bc0>>63)
-
-		bc0 = a[0] ^ d0
-		t = a[16] ^ d1
-		bc1 = t<<44 | t>>(64-44)
-		t = a[7] ^ d2
-		bc2 = t<<43 | t>>(64-43)
-		t = a[23] ^ d3
-		bc3 = t<<21 | t>>(64-21)
-		t = a[14] ^ d4
-		bc4 = t<<14 | t>>(64-14)
-		a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i+1]
-		a[16] = bc1 ^ (bc3 &^ bc2)
-		a[7] = bc2 ^ (bc4 &^ bc3)
-		a[23] = bc3 ^ (bc0 &^ bc4)
-		a[14] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[20] ^ d0
-		bc2 = t<<3 | t>>(64-3)
-		t = a[11] ^ d1
-		bc3 = t<<45 | t>>(64-45)
-		t = a[2] ^ d2
-		bc4 = t<<61 | t>>(64-61)
-		t = a[18] ^ d3
-		bc0 = t<<28 | t>>(64-28)
-		t = a[9] ^ d4
-		bc1 = t<<20 | t>>(64-20)
-		a[20] = bc0 ^ (bc2 &^ bc1)
-		a[11] = bc1 ^ (bc3 &^ bc2)
-		a[2] = bc2 ^ (bc4 &^ bc3)
-		a[18] = bc3 ^ (bc0 &^ bc4)
-		a[9] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[15] ^ d0
-		bc4 = t<<18 | t>>(64-18)
-		t = a[6] ^ d1
-		bc0 = t<<1 | t>>(64-1)
-		t = a[22] ^ d2
-		bc1 = t<<6 | t>>(64-6)
-		t = a[13] ^ d3
-		bc2 = t<<25 | t>>(64-25)
-		t = a[4] ^ d4
-		bc3 = t<<8 | t>>(64-8)
-		a[15] = bc0 ^ (bc2 &^ bc1)
-		a[6] = bc1 ^ (bc3 &^ bc2)
-		a[22] = bc2 ^ (bc4 &^ bc3)
-		a[13] = bc3 ^ (bc0 &^ bc4)
-		a[4] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[10] ^ d0
-		bc1 = t<<36 | t>>(64-36)
-		t = a[1] ^ d1
-		bc2 = t<<10 | t>>(64-10)
-		t = a[17] ^ d2
-		bc3 = t<<15 | t>>(64-15)
-		t = a[8] ^ d3
-		bc4 = t<<56 | t>>(64-56)
-		t = a[24] ^ d4
-		bc0 = t<<27 | t>>(64-27)
-		a[10] = bc0 ^ (bc2 &^ bc1)
-		a[1] = bc1 ^ (bc3 &^ bc2)
-		a[17] = bc2 ^ (bc4 &^ bc3)
-		a[8] = bc3 ^ (bc0 &^ bc4)
-		a[24] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[5] ^ d0
-		bc3 = t<<41 | t>>(64-41)
-		t = a[21] ^ d1
-		bc4 = t<<2 | t>>(64-2)
-		t = a[12] ^ d2
-		bc0 = t<<62 | t>>(64-62)
-		t = a[3] ^ d3
-		bc1 = t<<55 | t>>(64-55)
-		t = a[19] ^ d4
-		bc2 = t<<39 | t>>(64-39)
-		a[5] = bc0 ^ (bc2 &^ bc1)
-		a[21] = bc1 ^ (bc3 &^ bc2)
-		a[12] = bc2 ^ (bc4 &^ bc3)
-		a[3] = bc3 ^ (bc0 &^ bc4)
-		a[19] = bc4 ^ (bc1 &^ bc0)
-
-		// Round 3
-		bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20]
-		bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21]
-		bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22]
-		bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23]
-		bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24]
-		d0 = bc4 ^ (bc1<<1 | bc1>>63)
-		d1 = bc0 ^ (bc2<<1 | bc2>>63)
-		d2 = bc1 ^ (bc3<<1 | bc3>>63)
-		d3 = bc2 ^ (bc4<<1 | bc4>>63)
-		d4 = bc3 ^ (bc0<<1 | bc0>>63)
-
-		bc0 = a[0] ^ d0
-		t = a[11] ^ d1
-		bc1 = t<<44 | t>>(64-44)
-		t = a[22] ^ d2
-		bc2 = t<<43 | t>>(64-43)
-		t = a[8] ^ d3
-		bc3 = t<<21 | t>>(64-21)
-		t = a[19] ^ d4
-		bc4 = t<<14 | t>>(64-14)
-		a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i+2]
-		a[11] = bc1 ^ (bc3 &^ bc2)
-		a[22] = bc2 ^ (bc4 &^ bc3)
-		a[8] = bc3 ^ (bc0 &^ bc4)
-		a[19] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[15] ^ d0
-		bc2 = t<<3 | t>>(64-3)
-		t = a[1] ^ d1
-		bc3 = t<<45 | t>>(64-45)
-		t = a[12] ^ d2
-		bc4 = t<<61 | t>>(64-61)
-		t = a[23] ^ d3
-		bc0 = t<<28 | t>>(64-28)
-		t = a[9] ^ d4
-		bc1 = t<<20 | t>>(64-20)
-		a[15] = bc0 ^ (bc2 &^ bc1)
-		a[1] = bc1 ^ (bc3 &^ bc2)
-		a[12] = bc2 ^ (bc4 &^ bc3)
-		a[23] = bc3 ^ (bc0 &^ bc4)
-		a[9] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[5] ^ d0
-		bc4 = t<<18 | t>>(64-18)
-		t = a[16] ^ d1
-		bc0 = t<<1 | t>>(64-1)
-		t = a[2] ^ d2
-		bc1 = t<<6 | t>>(64-6)
-		t = a[13] ^ d3
-		bc2 = t<<25 | t>>(64-25)
-		t = a[24] ^ d4
-		bc3 = t<<8 | t>>(64-8)
-		a[5] = bc0 ^ (bc2 &^ bc1)
-		a[16] = bc1 ^ (bc3 &^ bc2)
-		a[2] = bc2 ^ (bc4 &^ bc3)
-		a[13] = bc3 ^ (bc0 &^ bc4)
-		a[24] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[20] ^ d0
-		bc1 = t<<36 | t>>(64-36)
-		t = a[6] ^ d1
-		bc2 = t<<10 | t>>(64-10)
-		t = a[17] ^ d2
-		bc3 = t<<15 | t>>(64-15)
-		t = a[3] ^ d3
-		bc4 = t<<56 | t>>(64-56)
-		t = a[14] ^ d4
-		bc0 = t<<27 | t>>(64-27)
-		a[20] = bc0 ^ (bc2 &^ bc1)
-		a[6] = bc1 ^ (bc3 &^ bc2)
-		a[17] = bc2 ^ (bc4 &^ bc3)
-		a[3] = bc3 ^ (bc0 &^ bc4)
-		a[14] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[10] ^ d0
-		bc3 = t<<41 | t>>(64-41)
-		t = a[21] ^ d1
-		bc4 = t<<2 | t>>(64-2)
-		t = a[7] ^ d2
-		bc0 = t<<62 | t>>(64-62)
-		t = a[18] ^ d3
-		bc1 = t<<55 | t>>(64-55)
-		t = a[4] ^ d4
-		bc2 = t<<39 | t>>(64-39)
-		a[10] = bc0 ^ (bc2 &^ bc1)
-		a[21] = bc1 ^ (bc3 &^ bc2)
-		a[7] = bc2 ^ (bc4 &^ bc3)
-		a[18] = bc3 ^ (bc0 &^ bc4)
-		a[4] = bc4 ^ (bc1 &^ bc0)
-
-		// Round 4
-		bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20]
-		bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21]
-		bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22]
-		bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23]
-		bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24]
-		d0 = bc4 ^ (bc1<<1 | bc1>>63)
-		d1 = bc0 ^ (bc2<<1 | bc2>>63)
-		d2 = bc1 ^ (bc3<<1 | bc3>>63)
-		d3 = bc2 ^ (bc4<<1 | bc4>>63)
-		d4 = bc3 ^ (bc0<<1 | bc0>>63)
-
-		bc0 = a[0] ^ d0
-		t = a[1] ^ d1
-		bc1 = t<<44 | t>>(64-44)
-		t = a[2] ^ d2
-		bc2 = t<<43 | t>>(64-43)
-		t = a[3] ^ d3
-		bc3 = t<<21 | t>>(64-21)
-		t = a[4] ^ d4
-		bc4 = t<<14 | t>>(64-14)
-		a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i+3]
-		a[1] = bc1 ^ (bc3 &^ bc2)
-		a[2] = bc2 ^ (bc4 &^ bc3)
-		a[3] = bc3 ^ (bc0 &^ bc4)
-		a[4] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[5] ^ d0
-		bc2 = t<<3 | t>>(64-3)
-		t = a[6] ^ d1
-		bc3 = t<<45 | t>>(64-45)
-		t = a[7] ^ d2
-		bc4 = t<<61 | t>>(64-61)
-		t = a[8] ^ d3
-		bc0 = t<<28 | t>>(64-28)
-		t = a[9] ^ d4
-		bc1 = t<<20 | t>>(64-20)
-		a[5] = bc0 ^ (bc2 &^ bc1)
-		a[6] = bc1 ^ (bc3 &^ bc2)
-		a[7] = bc2 ^ (bc4 &^ bc3)
-		a[8] = bc3 ^ (bc0 &^ bc4)
-		a[9] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[10] ^ d0
-		bc4 = t<<18 | t>>(64-18)
-		t = a[11] ^ d1
-		bc0 = t<<1 | t>>(64-1)
-		t = a[12] ^ d2
-		bc1 = t<<6 | t>>(64-6)
-		t = a[13] ^ d3
-		bc2 = t<<25 | t>>(64-25)
-		t = a[14] ^ d4
-		bc3 = t<<8 | t>>(64-8)
-		a[10] = bc0 ^ (bc2 &^ bc1)
-		a[11] = bc1 ^ (bc3 &^ bc2)
-		a[12] = bc2 ^ (bc4 &^ bc3)
-		a[13] = bc3 ^ (bc0 &^ bc4)
-		a[14] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[15] ^ d0
-		bc1 = t<<36 | t>>(64-36)
-		t = a[16] ^ d1
-		bc2 = t<<10 | t>>(64-10)
-		t = a[17] ^ d2
-		bc3 = t<<15 | t>>(64-15)
-		t = a[18] ^ d3
-		bc4 = t<<56 | t>>(64-56)
-		t = a[19] ^ d4
-		bc0 = t<<27 | t>>(64-27)
-		a[15] = bc0 ^ (bc2 &^ bc1)
-		a[16] = bc1 ^ (bc3 &^ bc2)
-		a[17] = bc2 ^ (bc4 &^ bc3)
-		a[18] = bc3 ^ (bc0 &^ bc4)
-		a[19] = bc4 ^ (bc1 &^ bc0)
-
-		t = a[20] ^ d0
-		bc3 = t<<41 | t>>(64-41)
-		t = a[21] ^ d1
-		bc4 = t<<2 | t>>(64-2)
-		t = a[22] ^ d2
-		bc0 = t<<62 | t>>(64-62)
-		t = a[23] ^ d3
-		bc1 = t<<55 | t>>(64-55)
-		t = a[24] ^ d4
-		bc2 = t<<39 | t>>(64-39)
-		a[20] = bc0 ^ (bc2 &^ bc1)
-		a[21] = bc1 ^ (bc3 &^ bc2)
-		a[22] = bc2 ^ (bc4 &^ bc3)
-		a[23] = bc3 ^ (bc0 &^ bc4)
-		a[24] = bc4 ^ (bc1 &^ bc0)
-	}
-}
diff --git a/crypto/sha3/keccakf_amd64.go b/crypto/sha3/keccakf_amd64.go
deleted file mode 100644
index de035c550..000000000
--- a/crypto/sha3/keccakf_amd64.go
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright 2015 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.
-
-// +build amd64,!appengine,!gccgo
-
-package sha3
-
-// This function is implemented in keccakf_amd64.s.
-
-//go:noescape
-
-func keccakF1600(state *[25]uint64)
diff --git a/crypto/sha3/keccakf_amd64.s b/crypto/sha3/keccakf_amd64.s
deleted file mode 100644
index f88533acc..000000000
--- a/crypto/sha3/keccakf_amd64.s
+++ /dev/null
@@ -1,390 +0,0 @@
-// Copyright 2015 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.
-
-// +build amd64,!appengine,!gccgo
-
-// This code was translated into a form compatible with 6a from the public
-// domain sources at https://github.com/gvanas/KeccakCodePackage
-
-// Offsets in state
-#define _ba  (0*8)
-#define _be  (1*8)
-#define _bi  (2*8)
-#define _bo  (3*8)
-#define _bu  (4*8)
-#define _ga  (5*8)
-#define _ge  (6*8)
-#define _gi  (7*8)
-#define _go  (8*8)
-#define _gu  (9*8)
-#define _ka (10*8)
-#define _ke (11*8)
-#define _ki (12*8)
-#define _ko (13*8)
-#define _ku (14*8)
-#define _ma (15*8)
-#define _me (16*8)
-#define _mi (17*8)
-#define _mo (18*8)
-#define _mu (19*8)
-#define _sa (20*8)
-#define _se (21*8)
-#define _si (22*8)
-#define _so (23*8)
-#define _su (24*8)
-
-// Temporary registers
-#define rT1  AX
-
-// Round vars
-#define rpState DI
-#define rpStack SP
-
-#define rDa BX
-#define rDe CX
-#define rDi DX
-#define rDo R8
-#define rDu R9
-
-#define rBa R10
-#define rBe R11
-#define rBi R12
-#define rBo R13
-#define rBu R14
-
-#define rCa SI
-#define rCe BP
-#define rCi rBi
-#define rCo rBo
-#define rCu R15
-
-#define MOVQ_RBI_RCE MOVQ rBi, rCe
-#define XORQ_RT1_RCA XORQ rT1, rCa
-#define XORQ_RT1_RCE XORQ rT1, rCe
-#define XORQ_RBA_RCU XORQ rBa, rCu
-#define XORQ_RBE_RCU XORQ rBe, rCu
-#define XORQ_RDU_RCU XORQ rDu, rCu
-#define XORQ_RDA_RCA XORQ rDa, rCa
-#define XORQ_RDE_RCE XORQ rDe, rCe
-
-#define mKeccakRound(iState, oState, rc, B_RBI_RCE, G_RT1_RCA, G_RT1_RCE, G_RBA_RCU, K_RT1_RCA, K_RT1_RCE, K_RBA_RCU, M_RT1_RCA, M_RT1_RCE, M_RBE_RCU, S_RDU_RCU, S_RDA_RCA, S_RDE_RCE) \
-	/* Prepare round */    \
-	MOVQ rCe, rDa;         \
-	ROLQ $1, rDa;          \
-	                       \
-	MOVQ _bi(iState), rCi; \
-	XORQ _gi(iState), rDi; \
-	XORQ rCu, rDa;         \
-	XORQ _ki(iState), rCi; \
-	XORQ _mi(iState), rDi; \
-	XORQ rDi, rCi;         \
-	                       \
-	MOVQ rCi, rDe;         \
-	ROLQ $1, rDe;          \
-	                       \
-	MOVQ _bo(iState), rCo; \
-	XORQ _go(iState), rDo; \
-	XORQ rCa, rDe;         \
-	XORQ _ko(iState), rCo; \
-	XORQ _mo(iState), rDo; \
-	XORQ rDo, rCo;         \
-	                       \
-	MOVQ rCo, rDi;         \
-	ROLQ $1, rDi;          \
-	                       \
-	MOVQ rCu, rDo;         \
-	XORQ rCe, rDi;         \
-	ROLQ $1, rDo;          \
-	                       \
-	MOVQ rCa, rDu;         \
-	XORQ rCi, rDo;         \
-	ROLQ $1, rDu;          \
-	                       \
-	/* Result b */         \
-	MOVQ _ba(iState), rBa; \
-	MOVQ _ge(iState), rBe; \
-	XORQ rCo, rDu;         \
-	MOVQ _ki(iState), rBi; \
-	MOVQ _mo(iState), rBo; \
-	MOVQ _su(iState), rBu; \
-	XORQ rDe, rBe;         \
-	ROLQ $44, rBe;         \
-	XORQ rDi, rBi;         \
-	XORQ rDa, rBa;         \
-	ROLQ $43, rBi;         \
-	                       \
-	MOVQ rBe, rCa;         \
-	MOVQ rc, rT1;          \
-	ORQ  rBi, rCa;         \
-	XORQ rBa, rT1;         \
-	XORQ rT1, rCa;         \
-	MOVQ rCa, _ba(oState); \
-	                       \
-	XORQ rDu, rBu;         \
-	ROLQ $14, rBu;         \
-	MOVQ rBa, rCu;         \
-	ANDQ rBe, rCu;         \
-	XORQ rBu, rCu;         \
-	MOVQ rCu, _bu(oState); \
-	                       \
-	XORQ rDo, rBo;         \
-	ROLQ $21, rBo;         \
-	MOVQ rBo, rT1;         \
-	ANDQ rBu, rT1;         \
-	XORQ rBi, rT1;         \
-	MOVQ rT1, _bi(oState); \
-	                       \
-	NOTQ rBi;              \
-	ORQ  rBa, rBu;         \
-	ORQ  rBo, rBi;         \
-	XORQ rBo, rBu;         \
-	XORQ rBe, rBi;         \
-	MOVQ rBu, _bo(oState); \
-	MOVQ rBi, _be(oState); \
-	B_RBI_RCE;             \
-	                       \
-	/* Result g */         \
-	MOVQ _gu(iState), rBe; \
-	XORQ rDu, rBe;         \
-	MOVQ _ka(iState), rBi; \
-	ROLQ $20, rBe;         \
-	XORQ rDa, rBi;         \
-	ROLQ $3, rBi;          \
-	MOVQ _bo(iState), rBa; \
-	MOVQ rBe, rT1;         \
-	ORQ  rBi, rT1;         \
-	XORQ rDo, rBa;         \
-	MOVQ _me(iState), rBo; \
-	MOVQ _si(iState), rBu; \
-	ROLQ $28, rBa;         \
-	XORQ rBa, rT1;         \
-	MOVQ rT1, _ga(oState); \
-	G_RT1_RCA;             \
-	                       \
-	XORQ rDe, rBo;         \
-	ROLQ $45, rBo;         \
-	MOVQ rBi, rT1;         \
-	ANDQ rBo, rT1;         \
-	XORQ rBe, rT1;         \
-	MOVQ rT1, _ge(oState); \
-	G_RT1_RCE;             \
-	                       \
-	XORQ rDi, rBu;         \
-	ROLQ $61, rBu;         \
-	MOVQ rBu, rT1;         \
-	ORQ  rBa, rT1;         \
-	XORQ rBo, rT1;         \
-	MOVQ rT1, _go(oState); \
-	                       \
-	ANDQ rBe, rBa;         \
-	XORQ rBu, rBa;         \
-	MOVQ rBa, _gu(oState); \
-	NOTQ rBu;              \
-	G_RBA_RCU;             \
-	                       \
-	ORQ  rBu, rBo;         \
-	XORQ rBi, rBo;         \
-	MOVQ rBo, _gi(oState); \
-	                       \
-	/* Result k */         \
-	MOVQ _be(iState), rBa; \
-	MOVQ _gi(iState), rBe; \
-	MOVQ _ko(iState), rBi; \
-	MOVQ _mu(iState), rBo; \
-	MOVQ _sa(iState), rBu; \
-	XORQ rDi, rBe;         \
-	ROLQ $6, rBe;          \
-	XORQ rDo, rBi;         \
-	ROLQ $25, rBi;         \
-	MOVQ rBe, rT1;         \
-	ORQ  rBi, rT1;         \
-	XORQ rDe, rBa;         \
-	ROLQ $1, rBa;          \
-	XORQ rBa, rT1;         \
-	MOVQ rT1, _ka(oState); \
-	K_RT1_RCA;             \
-	                       \
-	XORQ rDu, rBo;         \
-	ROLQ $8, rBo;          \
-	MOVQ rBi, rT1;         \
-	ANDQ rBo, rT1;         \
-	XORQ rBe, rT1;         \
-	MOVQ rT1, _ke(oState); \
-	K_RT1_RCE;             \
-	                       \
-	XORQ rDa, rBu;         \
-	ROLQ $18, rBu;         \
-	NOTQ rBo;              \
-	MOVQ rBo, rT1;         \
-	ANDQ rBu, rT1;         \
-	XORQ rBi, rT1;         \
-	MOVQ rT1, _ki(oState); \
-	                       \
-	MOVQ rBu, rT1;         \
-	ORQ  rBa, rT1;         \
-	XORQ rBo, rT1;         \
-	MOVQ rT1, _ko(oState); \
-	                       \
-	ANDQ rBe, rBa;         \
-	XORQ rBu, rBa;         \
-	MOVQ rBa, _ku(oState); \
-	K_RBA_RCU;             \
-	                       \
-	/* Result m */         \
-	MOVQ _ga(iState), rBe; \
-	XORQ rDa, rBe;         \
-	MOVQ _ke(iState), rBi; \
-	ROLQ $36, rBe;         \
-	XORQ rDe, rBi;         \
-	MOVQ _bu(iState), rBa; \
-	ROLQ $10, rBi;         \
-	MOVQ rBe, rT1;         \
-	MOVQ _mi(iState), rBo; \
-	ANDQ rBi, rT1;         \
-	XORQ rDu, rBa;         \
-	MOVQ _so(iState), rBu; \
-	ROLQ $27, rBa;         \
-	XORQ rBa, rT1;         \
-	MOVQ rT1, _ma(oState); \
-	M_RT1_RCA;             \
-	                       \
-	XORQ rDi, rBo;         \
-	ROLQ $15, rBo;         \
-	MOVQ rBi, rT1;         \
-	ORQ  rBo, rT1;         \
-	XORQ rBe, rT1;         \
-	MOVQ rT1, _me(oState); \
-	M_RT1_RCE;             \
-	                       \
-	XORQ rDo, rBu;         \
-	ROLQ $56, rBu;         \
-	NOTQ rBo;              \
-	MOVQ rBo, rT1;         \
-	ORQ  rBu, rT1;         \
-	XORQ rBi, rT1;         \
-	MOVQ rT1, _mi(oState); \
-	                       \
-	ORQ  rBa, rBe;         \
-	XORQ rBu, rBe;         \
-	MOVQ rBe, _mu(oState); \
-	                       \
-	ANDQ rBa, rBu;         \
-	XORQ rBo, rBu;         \
-	MOVQ rBu, _mo(oState); \
-	M_RBE_RCU;             \
-	                       \
-	/* Result s */         \
-	MOVQ _bi(iState), rBa; \
-	MOVQ _go(iState), rBe; \
-	MOVQ _ku(iState), rBi; \
-	XORQ rDi, rBa;         \
-	MOVQ _ma(iState), rBo; \
-	ROLQ $62, rBa;         \
-	XORQ rDo, rBe;         \
-	MOVQ _se(iState), rBu; \
-	ROLQ $55, rBe;         \
-	                       \
-	XORQ rDu, rBi;         \
-	MOVQ rBa, rDu;         \
-	XORQ rDe, rBu;         \
-	ROLQ $2, rBu;          \
-	ANDQ rBe, rDu;         \
-	XORQ rBu, rDu;         \
-	MOVQ rDu, _su(oState); \
-	                       \
-	ROLQ $39, rBi;         \
-	S_RDU_RCU;             \
-	NOTQ rBe;              \
-	XORQ rDa, rBo;         \
-	MOVQ rBe, rDa;         \
-	ANDQ rBi, rDa;         \
-	XORQ rBa, rDa;         \
-	MOVQ rDa, _sa(oState); \
-	S_RDA_RCA;             \
-	                       \
-	ROLQ $41, rBo;         \
-	MOVQ rBi, rDe;         \
-	ORQ  rBo, rDe;         \
-	XORQ rBe, rDe;         \
-	MOVQ rDe, _se(oState); \
-	S_RDE_RCE;             \
-	                       \
-	MOVQ rBo, rDi;         \
-	MOVQ rBu, rDo;         \
-	ANDQ rBu, rDi;         \
-	ORQ  rBa, rDo;         \
-	XORQ rBi, rDi;         \
-	XORQ rBo, rDo;         \
-	MOVQ rDi, _si(oState); \
-	MOVQ rDo, _so(oState)  \
-
-// func keccakF1600(state *[25]uint64)
-TEXT ·keccakF1600(SB), 0, $200-8
-	MOVQ state+0(FP), rpState
-
-	// Convert the user state into an internal state
-	NOTQ _be(rpState)
-	NOTQ _bi(rpState)
-	NOTQ _go(rpState)
-	NOTQ _ki(rpState)
-	NOTQ _mi(rpState)
-	NOTQ _sa(rpState)
-
-	// Execute the KeccakF permutation
-	MOVQ _ba(rpState), rCa
-	MOVQ _be(rpState), rCe
-	MOVQ _bu(rpState), rCu
-
-	XORQ _ga(rpState), rCa
-	XORQ _ge(rpState), rCe
-	XORQ _gu(rpState), rCu
-
-	XORQ _ka(rpState), rCa
-	XORQ _ke(rpState), rCe
-	XORQ _ku(rpState), rCu
-
-	XORQ _ma(rpState), rCa
-	XORQ _me(rpState), rCe
-	XORQ _mu(rpState), rCu
-
-	XORQ _sa(rpState), rCa
-	XORQ _se(rpState), rCe
-	MOVQ _si(rpState), rDi
-	MOVQ _so(rpState), rDo
-	XORQ _su(rpState), rCu
-
-	mKeccakRound(rpState, rpStack, $0x0000000000000001, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x0000000000008082, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x800000000000808a, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x8000000080008000, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x000000000000808b, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x0000000080000001, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x8000000080008081, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x8000000000008009, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x000000000000008a, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x0000000000000088, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x0000000080008009, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x000000008000000a, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x000000008000808b, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x800000000000008b, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x8000000000008089, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x8000000000008003, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x8000000000008002, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x8000000000000080, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x000000000000800a, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x800000008000000a, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x8000000080008081, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x8000000000008080, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpState, rpStack, $0x0000000080000001, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE)
-	mKeccakRound(rpStack, rpState, $0x8000000080008008, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP)
-
-	// Revert the internal state to the user state
-	NOTQ _be(rpState)
-	NOTQ _bi(rpState)
-	NOTQ _go(rpState)
-	NOTQ _ki(rpState)
-	NOTQ _mi(rpState)
-	NOTQ _sa(rpState)
-
-	RET
diff --git a/crypto/sha3/register.go b/crypto/sha3/register.go
deleted file mode 100644
index 3cf6a22e0..000000000
--- a/crypto/sha3/register.go
+++ /dev/null
@@ -1,18 +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.
-
-// +build go1.4
-
-package sha3
-
-import (
-	"crypto"
-)
-
-func init() {
-	crypto.RegisterHash(crypto.SHA3_224, New224)
-	crypto.RegisterHash(crypto.SHA3_256, New256)
-	crypto.RegisterHash(crypto.SHA3_384, New384)
-	crypto.RegisterHash(crypto.SHA3_512, New512)
-}
diff --git a/crypto/sha3/sha3.go b/crypto/sha3/sha3.go
deleted file mode 100644
index b12a35c87..000000000
--- a/crypto/sha3/sha3.go
+++ /dev/null
@@ -1,192 +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
-
-// spongeDirection indicates the direction bytes are flowing through the sponge.
-type spongeDirection int
-
-const (
-	// spongeAbsorbing indicates that the sponge is absorbing input.
-	spongeAbsorbing spongeDirection = iota
-	// spongeSqueezing indicates that the sponge is being squeezed.
-	spongeSqueezing
-)
-
-const (
-	// maxRate is the maximum size of the internal buffer. SHAKE-256
-	// currently needs the largest buffer.
-	maxRate = 168
-)
-
-type state struct {
-	// Generic sponge components.
-	a    [25]uint64 // main state of the hash
-	buf  []byte     // points into storage
-	rate int        // the number of bytes of state to use
-
-	// dsbyte contains the "domain separation" bits and the first bit of
-	// the padding. Sections 6.1 and 6.2 of [1] separate the outputs of the
-	// SHA-3 and SHAKE functions by appending bitstrings to the message.
-	// Using a little-endian bit-ordering convention, these are "01" for SHA-3
-	// and "1111" for SHAKE, or 00000010b and 00001111b, respectively. Then the
-	// padding rule from section 5.1 is applied to pad the message to a multiple
-	// of the rate, which involves adding a "1" bit, zero or more "0" bits, and
-	// a final "1" bit. We merge the first "1" bit from the padding into dsbyte,
-	// giving 00000110b (0x06) and 00011111b (0x1f).
-	// [1] http://csrc.nist.gov/publications/drafts/fips-202/fips_202_draft.pdf
-	//     "Draft FIPS 202: SHA-3 Standard: Permutation-Based Hash and
-	//      Extendable-Output Functions (May 2014)"
-	dsbyte  byte
-	storage [maxRate]byte
-
-	// Specific to SHA-3 and SHAKE.
-	outputLen int             // the default output size in bytes
-	state     spongeDirection // whether the sponge is absorbing or squeezing
-}
-
-// BlockSize returns the rate of sponge underlying this hash function.
-func (d *state) BlockSize() int { return d.rate }
-
-// Size returns the output size of the hash function in bytes.
-func (d *state) Size() int { return d.outputLen }
-
-// Reset clears the internal state by zeroing the sponge state and
-// the byte buffer, and setting Sponge.state to absorbing.
-func (d *state) Reset() {
-	// Zero the permutation's state.
-	for i := range d.a {
-		d.a[i] = 0
-	}
-	d.state = spongeAbsorbing
-	d.buf = d.storage[:0]
-}
-
-func (d *state) clone() *state {
-	ret := *d
-	if ret.state == spongeAbsorbing {
-		ret.buf = ret.storage[:len(ret.buf)]
-	} else {
-		ret.buf = ret.storage[d.rate-cap(d.buf) : d.rate]
-	}
-
-	return &ret
-}
-
-// permute applies the KeccakF-1600 permutation. It handles
-// any input-output buffering.
-func (d *state) permute() {
-	switch d.state {
-	case spongeAbsorbing:
-		// If we're absorbing, we need to xor the input into the state
-		// before applying the permutation.
-		xorIn(d, d.buf)
-		d.buf = d.storage[:0]
-		keccakF1600(&d.a)
-	case spongeSqueezing:
-		// If we're squeezing, we need to apply the permutatin before
-		// copying more output.
-		keccakF1600(&d.a)
-		d.buf = d.storage[:d.rate]
-		copyOut(d, d.buf)
-	}
-}
-
-// pads appends the domain separation bits in dsbyte, applies
-// the multi-bitrate 10..1 padding rule, and permutes the state.
-func (d *state) padAndPermute(dsbyte byte) {
-	if d.buf == nil {
-		d.buf = d.storage[:0]
-	}
-	// Pad with this instance's domain-separator bits. We know that there's
-	// at least one byte of space in d.buf because, if it were full,
-	// permute would have been called to empty it. dsbyte also contains the
-	// first one bit for the padding. See the comment in the state struct.
-	d.buf = append(d.buf, dsbyte)
-	zerosStart := len(d.buf)
-	d.buf = d.storage[:d.rate]
-	for i := zerosStart; i < d.rate; i++ {
-		d.buf[i] = 0
-	}
-	// This adds the final one bit for the padding. Because of the way that
-	// bits are numbered from the LSB upwards, the final bit is the MSB of
-	// the last byte.
-	d.buf[d.rate-1] ^= 0x80
-	// Apply the permutation
-	d.permute()
-	d.state = spongeSqueezing
-	d.buf = d.storage[:d.rate]
-	copyOut(d, d.buf)
-}
-
-// Write absorbs more data into the hash's state. It produces an error
-// if more data is written to the ShakeHash after writing
-func (d *state) Write(p []byte) (written int, err error) {
-	if d.state != spongeAbsorbing {
-		panic("sha3: write to sponge after read")
-	}
-	if d.buf == nil {
-		d.buf = d.storage[:0]
-	}
-	written = len(p)
-
-	for len(p) > 0 {
-		if len(d.buf) == 0 && len(p) >= d.rate {
-			// The fast path; absorb a full "rate" bytes of input and apply the permutation.
-			xorIn(d, p[:d.rate])
-			p = p[d.rate:]
-			keccakF1600(&d.a)
-		} else {
-			// The slow path; buffer the input until we can fill the sponge, and then xor it in.
-			todo := d.rate - len(d.buf)
-			if todo > len(p) {
-				todo = len(p)
-			}
-			d.buf = append(d.buf, p[:todo]...)
-			p = p[todo:]
-
-			// If the sponge is full, apply the permutation.
-			if len(d.buf) == d.rate {
-				d.permute()
-			}
-		}
-	}
-
-	return
-}
-
-// Read squeezes an arbitrary number of bytes from the sponge.
-func (d *state) Read(out []byte) (n int, err error) {
-	// If we're still absorbing, pad and apply the permutation.
-	if d.state == spongeAbsorbing {
-		d.padAndPermute(d.dsbyte)
-	}
-
-	n = len(out)
-
-	// Now, do the squeezing.
-	for len(out) > 0 {
-		n := copy(out, d.buf)
-		d.buf = d.buf[n:]
-		out = out[n:]
-
-		// Apply the permutation if we've squeezed the sponge dry.
-		if len(d.buf) == 0 {
-			d.permute()
-		}
-	}
-
-	return
-}
-
-// Sum applies padding to the hash state and then squeezes out the desired
-// number of output bytes.
-func (d *state) Sum(in []byte) []byte {
-	// Make a copy of the original hash so that caller can keep writing
-	// and summing.
-	dup := d.clone()
-	hash := make([]byte, dup.outputLen)
-	dup.Read(hash)
-	return append(in, hash...)
-}
diff --git a/crypto/sha3/sha3_test.go b/crypto/sha3/sha3_test.go
deleted file mode 100644
index 0e33676ce..000000000
--- a/crypto/sha3/sha3_test.go
+++ /dev/null
@@ -1,297 +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
-
-// Tests include all the ShortMsgKATs provided by the Keccak team at
-// https://github.com/gvanas/KeccakCodePackage
-//
-// They only include the zero-bit case of the bitwise testvectors
-// published by NIST in the draft of FIPS-202.
-
-import (
-	"bytes"
-	"compress/flate"
-	"encoding/hex"
-	"encoding/json"
-	"hash"
-	"os"
-	"strings"
-	"testing"
-)
-
-const (
-	testString  = "brekeccakkeccak koax koax"
-	katFilename = "testdata/keccakKats.json.deflate"
-)
-
-// Internal-use instances of SHAKE used to test against KATs.
-func newHashShake128() hash.Hash {
-	return &state{rate: 168, dsbyte: 0x1f, outputLen: 512}
-}
-func newHashShake256() hash.Hash {
-	return &state{rate: 136, dsbyte: 0x1f, outputLen: 512}
-}
-
-// testDigests contains functions returning hash.Hash instances
-// with output-length equal to the KAT length for both SHA-3 and
-// SHAKE instances.
-var testDigests = map[string]func() hash.Hash{
-	"SHA3-224": New224,
-	"SHA3-256": New256,
-	"SHA3-384": New384,
-	"SHA3-512": New512,
-	"SHAKE128": newHashShake128,
-	"SHAKE256": newHashShake256,
-}
-
-// testShakes contains functions that return ShakeHash instances for
-// testing the ShakeHash-specific interface.
-var testShakes = map[string]func() ShakeHash{
-	"SHAKE128": NewShake128,
-	"SHAKE256": NewShake256,
-}
-
-// structs used to marshal JSON test-cases.
-type KeccakKats struct {
-	Kats map[string][]struct {
-		Digest  string `json:"digest"`
-		Length  int64  `json:"length"`
-		Message string `json:"message"`
-	}
-}
-
-func testUnalignedAndGeneric(t *testing.T, testf func(impl string)) {
-	xorInOrig, copyOutOrig := xorIn, copyOut
-	xorIn, copyOut = xorInGeneric, copyOutGeneric
-	testf("generic")
-	if xorImplementationUnaligned != "generic" {
-		xorIn, copyOut = xorInUnaligned, copyOutUnaligned
-		testf("unaligned")
-	}
-	xorIn, copyOut = xorInOrig, copyOutOrig
-}
-
-// TestKeccakKats tests the SHA-3 and Shake implementations against all the
-// ShortMsgKATs from https://github.com/gvanas/KeccakCodePackage
-// (The testvectors are stored in keccakKats.json.deflate due to their length.)
-func TestKeccakKats(t *testing.T) {
-	testUnalignedAndGeneric(t, func(impl string) {
-		// Read the KATs.
-		deflated, err := os.Open(katFilename)
-		if err != nil {
-			t.Errorf("error opening %s: %s", katFilename, err)
-		}
-		file := flate.NewReader(deflated)
-		dec := json.NewDecoder(file)
-		var katSet KeccakKats
-		err = dec.Decode(&katSet)
-		if err != nil {
-			t.Errorf("error decoding KATs: %s", err)
-		}
-
-		// Do the KATs.
-		for functionName, kats := range katSet.Kats {
-			d := testDigests[functionName]()
-			for _, kat := range kats {
-				d.Reset()
-				in, err := hex.DecodeString(kat.Message)
-				if err != nil {
-					t.Errorf("error decoding KAT: %s", err)
-				}
-				d.Write(in[:kat.Length/8])
-				got := strings.ToUpper(hex.EncodeToString(d.Sum(nil)))
-				if got != kat.Digest {
-					t.Errorf("function=%s, implementation=%s, length=%d\nmessage:\n  %s\ngot:\n  %s\nwanted:\n %s",
-						functionName, impl, kat.Length, kat.Message, got, kat.Digest)
-					t.Logf("wanted %+v", kat)
-					t.FailNow()
-				}
-				continue
-			}
-		}
-	})
-}
-
-// TestUnalignedWrite tests that writing data in an arbitrary pattern with
-// small input buffers.
-func TestUnalignedWrite(t *testing.T) {
-	testUnalignedAndGeneric(t, func(impl string) {
-		buf := sequentialBytes(0x10000)
-		for alg, df := range testDigests {
-			d := df()
-			d.Reset()
-			d.Write(buf)
-			want := d.Sum(nil)
-			d.Reset()
-			for i := 0; i < len(buf); {
-				// Cycle through offsets which make a 137 byte sequence.
-				// Because 137 is prime this sequence should exercise all corner cases.
-				offsets := [17]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1}
-				for _, j := range offsets {
-					if v := len(buf) - i; v < j {
-						j = v
-					}
-					d.Write(buf[i : i+j])
-					i += j
-				}
-			}
-			got := d.Sum(nil)
-			if !bytes.Equal(got, want) {
-				t.Errorf("Unaligned writes, implementation=%s, alg=%s\ngot %q, want %q", impl, alg, got, want)
-			}
-		}
-	})
-}
-
-// TestAppend checks that appending works when reallocation is necessary.
-func TestAppend(t *testing.T) {
-	testUnalignedAndGeneric(t, func(impl string) {
-		d := New224()
-
-		for capacity := 2; capacity <= 66; capacity += 64 {
-			// The first time around the loop, Sum will have to reallocate.
-			// The second time, it will not.
-			buf := make([]byte, 2, capacity)
-			d.Reset()
-			d.Write([]byte{0xcc})
-			buf = d.Sum(buf)
-			expected := "0000DF70ADC49B2E76EEE3A6931B93FA41841C3AF2CDF5B32A18B5478C39"
-			if got := strings.ToUpper(hex.EncodeToString(buf)); got != expected {
-				t.Errorf("got %s, want %s", got, expected)
-			}
-		}
-	})
-}
-
-// TestAppendNoRealloc tests that appending works when no reallocation is necessary.
-func TestAppendNoRealloc(t *testing.T) {
-	testUnalignedAndGeneric(t, func(impl string) {
-		buf := make([]byte, 1, 200)
-		d := New224()
-		d.Write([]byte{0xcc})
-		buf = d.Sum(buf)
-		expected := "00DF70ADC49B2E76EEE3A6931B93FA41841C3AF2CDF5B32A18B5478C39"
-		if got := strings.ToUpper(hex.EncodeToString(buf)); got != expected {
-			t.Errorf("%s: got %s, want %s", impl, got, expected)
-		}
-	})
-}
-
-// TestSqueezing checks that squeezing the full output a single time produces
-// the same output as repeatedly squeezing the instance.
-func TestSqueezing(t *testing.T) {
-	testUnalignedAndGeneric(t, func(impl string) {
-		for functionName, newShakeHash := range testShakes {
-			d0 := newShakeHash()
-			d0.Write([]byte(testString))
-			ref := make([]byte, 32)
-			d0.Read(ref)
-
-			d1 := newShakeHash()
-			d1.Write([]byte(testString))
-			var multiple []byte
-			for range ref {
-				one := make([]byte, 1)
-				d1.Read(one)
-				multiple = append(multiple, one...)
-			}
-			if !bytes.Equal(ref, multiple) {
-				t.Errorf("%s (%s): squeezing %d bytes one at a time failed", functionName, impl, len(ref))
-			}
-		}
-	})
-}
-
-// sequentialBytes produces a buffer of size consecutive bytes 0x00, 0x01, ..., used for testing.
-func sequentialBytes(size int) []byte {
-	result := make([]byte, size)
-	for i := range result {
-		result[i] = byte(i)
-	}
-	return result
-}
-
-// BenchmarkPermutationFunction measures the speed of the permutation function
-// with no input data.
-func BenchmarkPermutationFunction(b *testing.B) {
-	b.SetBytes(int64(200))
-	var lanes [25]uint64
-	for i := 0; i < b.N; i++ {
-		keccakF1600(&lanes)
-	}
-}
-
-// benchmarkHash tests the speed to hash num buffers of buflen each.
-func benchmarkHash(b *testing.B, h hash.Hash, size, num int) {
-	b.StopTimer()
-	h.Reset()
-	data := sequentialBytes(size)
-	b.SetBytes(int64(size * num))
-	b.StartTimer()
-
-	var state []byte
-	for i := 0; i < b.N; i++ {
-		for j := 0; j < num; j++ {
-			h.Write(data)
-		}
-		state = h.Sum(state[:0])
-	}
-	b.StopTimer()
-	h.Reset()
-}
-
-// benchmarkShake is specialized to the Shake instances, which don't
-// require a copy on reading output.
-func benchmarkShake(b *testing.B, h ShakeHash, size, num int) {
-	b.StopTimer()
-	h.Reset()
-	data := sequentialBytes(size)
-	d := make([]byte, 32)
-
-	b.SetBytes(int64(size * num))
-	b.StartTimer()
-
-	for i := 0; i < b.N; i++ {
-		h.Reset()
-		for j := 0; j < num; j++ {
-			h.Write(data)
-		}
-		h.Read(d)
-	}
-}
-
-func BenchmarkSha3_512_MTU(b *testing.B) { benchmarkHash(b, New512(), 1350, 1) }
-func BenchmarkSha3_384_MTU(b *testing.B) { benchmarkHash(b, New384(), 1350, 1) }
-func BenchmarkSha3_256_MTU(b *testing.B) { benchmarkHash(b, New256(), 1350, 1) }
-func BenchmarkSha3_224_MTU(b *testing.B) { benchmarkHash(b, New224(), 1350, 1) }
-
-func BenchmarkShake128_MTU(b *testing.B)  { benchmarkShake(b, NewShake128(), 1350, 1) }
-func BenchmarkShake256_MTU(b *testing.B)  { benchmarkShake(b, NewShake256(), 1350, 1) }
-func BenchmarkShake256_16x(b *testing.B)  { benchmarkShake(b, NewShake256(), 16, 1024) }
-func BenchmarkShake256_1MiB(b *testing.B) { benchmarkShake(b, NewShake256(), 1024, 1024) }
-
-func BenchmarkSha3_512_1MiB(b *testing.B) { benchmarkHash(b, New512(), 1024, 1024) }
-
-func Example_sum() {
-	buf := []byte("some data to hash")
-	// A hash needs to be 64 bytes long to have 256-bit collision resistance.
-	h := make([]byte, 64)
-	// Compute a 64-byte hash of buf and put it in h.
-	ShakeSum256(h, buf)
-}
-
-func Example_mac() {
-	k := []byte("this is a secret key; you should generate a strong random key that's at least 32 bytes long")
-	buf := []byte("and this is some data to authenticate")
-	// A MAC with 32 bytes of output has 256-bit security strength -- if you use at least a 32-byte-long key.
-	h := make([]byte, 32)
-	d := NewShake256()
-	// Write the key into the hash.
-	d.Write(k)
-	// Now write the data.
-	d.Write(buf)
-	// Read 32 bytes of output from the hash into h.
-	d.Read(h)
-}
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)
-}
diff --git a/crypto/sha3/testdata/keccakKats.json.deflate b/crypto/sha3/testdata/keccakKats.json.deflate
deleted file mode 100644
index 62e85ae24..000000000
--- a/crypto/sha3/testdata/keccakKats.json.deflate
+++ /dev/null
diff --git a/crypto/sha3/xor.go b/crypto/sha3/xor.go
deleted file mode 100644
index 46a0d63a6..000000000
--- a/crypto/sha3/xor.go
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2015 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.
-
-// +build !amd64,!386,!ppc64le appengine
-
-package sha3
-
-var (
-	xorIn            = xorInGeneric
-	copyOut          = copyOutGeneric
-	xorInUnaligned   = xorInGeneric
-	copyOutUnaligned = copyOutGeneric
-)
-
-const xorImplementationUnaligned = "generic"
diff --git a/crypto/sha3/xor_generic.go b/crypto/sha3/xor_generic.go
deleted file mode 100644
index fd35f02ef..000000000
--- a/crypto/sha3/xor_generic.go
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2015 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
-
-import "encoding/binary"
-
-// xorInGeneric xors the bytes in buf into the state; it
-// makes no non-portable assumptions about memory layout
-// or alignment.
-func xorInGeneric(d *state, buf []byte) {
-	n := len(buf) / 8
-
-	for i := 0; i < n; i++ {
-		a := binary.LittleEndian.Uint64(buf)
-		d.a[i] ^= a
-		buf = buf[8:]
-	}
-}
-
-// copyOutGeneric copies ulint64s to a byte buffer.
-func copyOutGeneric(d *state, b []byte) {
-	for i := 0; len(b) >= 8; i++ {
-		binary.LittleEndian.PutUint64(b, d.a[i])
-		b = b[8:]
-	}
-}
diff --git a/crypto/sha3/xor_unaligned.go b/crypto/sha3/xor_unaligned.go
deleted file mode 100644
index 929a486a7..000000000
--- a/crypto/sha3/xor_unaligned.go
+++ /dev/null
@@ -1,58 +0,0 @@
-// Copyright 2015 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.
-
-// +build amd64 386 ppc64le
-// +build !appengine
-
-package sha3
-
-import "unsafe"
-
-func xorInUnaligned(d *state, buf []byte) {
-	bw := (*[maxRate / 8]uint64)(unsafe.Pointer(&buf[0]))
-	n := len(buf)
-	if n >= 72 {
-		d.a[0] ^= bw[0]
-		d.a[1] ^= bw[1]
-		d.a[2] ^= bw[2]
-		d.a[3] ^= bw[3]
-		d.a[4] ^= bw[4]
-		d.a[5] ^= bw[5]
-		d.a[6] ^= bw[6]
-		d.a[7] ^= bw[7]
-		d.a[8] ^= bw[8]
-	}
-	if n >= 104 {
-		d.a[9] ^= bw[9]
-		d.a[10] ^= bw[10]
-		d.a[11] ^= bw[11]
-		d.a[12] ^= bw[12]
-	}
-	if n >= 136 {
-		d.a[13] ^= bw[13]
-		d.a[14] ^= bw[14]
-		d.a[15] ^= bw[15]
-		d.a[16] ^= bw[16]
-	}
-	if n >= 144 {
-		d.a[17] ^= bw[17]
-	}
-	if n >= 168 {
-		d.a[18] ^= bw[18]
-		d.a[19] ^= bw[19]
-		d.a[20] ^= bw[20]
-	}
-}
-
-func copyOutUnaligned(d *state, buf []byte) {
-	ab := (*[maxRate]uint8)(unsafe.Pointer(&d.a[0]))
-	copy(buf, ab[:])
-}
-
-var (
-	xorIn   = xorInUnaligned
-	copyOut = copyOutUnaligned
-)
-
-const xorImplementationUnaligned = "unaligned"