1 files changed, 0 insertions, 105 deletions
diff --git a/src/pkg/crypto/block/cmac.go b/src/pkg/crypto/block/cmac.go
deleted file mode 100644
index b85cde72e..000000000
--- a/src/pkg/crypto/block/cmac.go
+++ /dev/null
@@ -1,105 +0,0 @@
-// Copyright 2009 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.
-
-// CMAC message authentication code, defined in
-// NIST Special Publication SP 800-38B.
-
-package block
-
-import (
-	"hash"
-	"os"
-)
-
-const (
-	// minimal irreducible polynomial of degree b
-	r64  = 0x1b
-	r128 = 0x87
-)
-
-type cmac struct {
-	k1, k2, ci, digest []byte
-	p                  int // position in ci
-	c                  Cipher
-}
-
-// TODO(rsc): Should this return an error instead of panic?
-
-// NewCMAC returns a new instance of a CMAC message authentication code
-// digest using the given Cipher.
-func NewCMAC(c Cipher) hash.Hash {
-	var r byte
-	n := c.BlockSize()
-	switch n {
-	case 64 / 8:
-		r = r64
-	case 128 / 8:
-		r = r128
-	default:
-		panic("crypto/block: NewCMAC: invalid cipher block size")
-	}
-
-	d := new(cmac)
-	d.c = c
-	d.k1 = make([]byte, n)
-	d.k2 = make([]byte, n)
-	d.ci = make([]byte, n)
-	d.digest = make([]byte, n)
-
-	// Subkey generation, p. 7
-	c.Encrypt(d.k1, d.k1)
-	if shift1(d.k1, d.k1) != 0 {
-		d.k1[n-1] ^= r
-	}
-	if shift1(d.k2, d.k1) != 0 {
-		d.k2[n-1] ^= r
-	}
-
-	return d
-}
-
-// Reset clears the digest state, starting a new digest.
-func (d *cmac) Reset() {
-	for i := range d.ci {
-		d.ci[i] = 0
-	}
-	d.p = 0
-}
-
-// Write adds the given data to the digest state.
-func (d *cmac) Write(p []byte) (n int, err os.Error) {
-	// Xor input into ci.
-	for _, c := range p {
-		// If ci is full, encrypt and start over.
-		if d.p >= len(d.ci) {
-			d.c.Encrypt(d.ci, d.ci)
-			d.p = 0
-		}
-		d.ci[d.p] ^= c
-		d.p++
-	}
-	return len(p), nil
-}
-
-// Sum returns the CMAC digest, one cipher block in length,
-// of the data written with Write.
-func (d *cmac) Sum() []byte {
-	// Finish last block, mix in key, encrypt.
-	// Don't edit ci, in case caller wants
-	// to keep digesting after call to Sum.
-	k := d.k1
-	if d.p < len(d.digest) {
-		k = d.k2
-	}
-	for i := 0; i < len(d.ci); i++ {
-		d.digest[i] = d.ci[i] ^ k[i]
-	}
-	if d.p < len(d.digest) {
-		d.digest[d.p] ^= 0x80
-	}
-	d.c.Encrypt(d.digest, d.digest)
-	return d.digest
-}
-
-func (d *cmac) Size() int { return len(d.digest) }