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-rw-r--r--vendor/golang.org/x/crypto/tea/cipher.go108
-rw-r--r--vendor/golang.org/x/crypto/tea/tea_test.go93
2 files changed, 0 insertions, 201 deletions
diff --git a/vendor/golang.org/x/crypto/tea/cipher.go b/vendor/golang.org/x/crypto/tea/cipher.go
deleted file mode 100644
index ce223b2..0000000
--- a/vendor/golang.org/x/crypto/tea/cipher.go
+++ /dev/null
@@ -1,108 +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 tea implements the TEA algorithm, as defined in Needham and
-// Wheeler's 1994 technical report, “TEA, a Tiny Encryption Algorithm”. See
-// http://www.cix.co.uk/~klockstone/tea.pdf for details.
-package tea
-
-import (
- "crypto/cipher"
- "encoding/binary"
- "errors"
-)
-
-const (
- // BlockSize is the size of a TEA block, in bytes.
- BlockSize = 8
-
- // KeySize is the size of a TEA key, in bytes.
- KeySize = 16
-
- // delta is the TEA key schedule constant.
- delta = 0x9e3779b9
-
- // numRounds is the standard number of rounds in TEA.
- numRounds = 64
-)
-
-// tea is an instance of the TEA cipher with a particular key.
-type tea struct {
- key [16]byte
- rounds int
-}
-
-// NewCipher returns an instance of the TEA cipher with the standard number of
-// rounds. The key argument must be 16 bytes long.
-func NewCipher(key []byte) (cipher.Block, error) {
- return NewCipherWithRounds(key, numRounds)
-}
-
-// NewCipherWithRounds returns an instance of the TEA cipher with a given
-// number of rounds, which must be even. The key argument must be 16 bytes
-// long.
-func NewCipherWithRounds(key []byte, rounds int) (cipher.Block, error) {
- if len(key) != 16 {
- return nil, errors.New("tea: incorrect key size")
- }
-
- if rounds&1 != 0 {
- return nil, errors.New("tea: odd number of rounds specified")
- }
-
- c := &tea{
- rounds: rounds,
- }
- copy(c.key[:], key)
-
- return c, nil
-}
-
-// BlockSize returns the TEA block size, which is eight bytes. It is necessary
-// to satisfy the Block interface in the package "crypto/cipher".
-func (*tea) BlockSize() int {
- return BlockSize
-}
-
-// Encrypt encrypts the 8 byte buffer src using the key in t and stores the
-// result in dst. Note that for amounts of data larger than a block, it is not
-// safe to just call Encrypt on successive blocks; instead, use an encryption
-// mode like CBC (see crypto/cipher/cbc.go).
-func (t *tea) Encrypt(dst, src []byte) {
- e := binary.BigEndian
- v0, v1 := e.Uint32(src), e.Uint32(src[4:])
- k0, k1, k2, k3 := e.Uint32(t.key[0:]), e.Uint32(t.key[4:]), e.Uint32(t.key[8:]), e.Uint32(t.key[12:])
-
- sum := uint32(0)
- delta := uint32(delta)
-
- for i := 0; i < t.rounds/2; i++ {
- sum += delta
- v0 += ((v1 << 4) + k0) ^ (v1 + sum) ^ ((v1 >> 5) + k1)
- v1 += ((v0 << 4) + k2) ^ (v0 + sum) ^ ((v0 >> 5) + k3)
- }
-
- e.PutUint32(dst, v0)
- e.PutUint32(dst[4:], v1)
-}
-
-// Decrypt decrypts the 8 byte buffer src using the key in t and stores the
-// result in dst.
-func (t *tea) Decrypt(dst, src []byte) {
- e := binary.BigEndian
- v0, v1 := e.Uint32(src), e.Uint32(src[4:])
- k0, k1, k2, k3 := e.Uint32(t.key[0:]), e.Uint32(t.key[4:]), e.Uint32(t.key[8:]), e.Uint32(t.key[12:])
-
- delta := uint32(delta)
- sum := delta * uint32(t.rounds/2) // in general, sum = delta * n
-
- for i := 0; i < t.rounds/2; i++ {
- v1 -= ((v0 << 4) + k2) ^ (v0 + sum) ^ ((v0 >> 5) + k3)
- v0 -= ((v1 << 4) + k0) ^ (v1 + sum) ^ ((v1 >> 5) + k1)
- sum -= delta
- }
-
- e.PutUint32(dst, v0)
- e.PutUint32(dst[4:], v1)
-}
diff --git a/vendor/golang.org/x/crypto/tea/tea_test.go b/vendor/golang.org/x/crypto/tea/tea_test.go
deleted file mode 100644
index eb98d1e..0000000
--- a/vendor/golang.org/x/crypto/tea/tea_test.go
+++ /dev/null
@@ -1,93 +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 tea
-
-import (
- "bytes"
- "testing"
-)
-
-// A sample test key for when we just want to initialize a cipher
-var testKey = []byte{0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF}
-
-// Test that the block size for tea is correct
-func TestBlocksize(t *testing.T) {
- c, err := NewCipher(testKey)
- if err != nil {
- t.Fatalf("NewCipher returned error: %s", err)
- }
-
- if result := c.BlockSize(); result != BlockSize {
- t.Errorf("cipher.BlockSize returned %d, but expected %d", result, BlockSize)
- }
-}
-
-// Test that invalid key sizes return an error
-func TestInvalidKeySize(t *testing.T) {
- var key [KeySize + 1]byte
-
- if _, err := NewCipher(key[:]); err == nil {
- t.Errorf("invalid key size %d didn't result in an error.", len(key))
- }
-
- if _, err := NewCipher(key[:KeySize-1]); err == nil {
- t.Errorf("invalid key size %d didn't result in an error.", KeySize-1)
- }
-}
-
-// Test Vectors
-type teaTest struct {
- rounds int
- key []byte
- plaintext []byte
- ciphertext []byte
-}
-
-var teaTests = []teaTest{
- // These were sourced from https://github.com/froydnj/ironclad/blob/master/testing/test-vectors/tea.testvec
- {
- numRounds,
- []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
- []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
- []byte{0x41, 0xea, 0x3a, 0x0a, 0x94, 0xba, 0xa9, 0x40},
- },
- {
- numRounds,
- []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
- []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
- []byte{0x31, 0x9b, 0xbe, 0xfb, 0x01, 0x6a, 0xbd, 0xb2},
- },
- {
- 16,
- []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
- []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
- []byte{0xed, 0x28, 0x5d, 0xa1, 0x45, 0x5b, 0x33, 0xc1},
- },
-}
-
-// Test encryption
-func TestCipherEncrypt(t *testing.T) {
- // Test encryption with standard 64 rounds
- for i, test := range teaTests {
- c, err := NewCipherWithRounds(test.key, test.rounds)
- if err != nil {
- t.Fatalf("#%d: NewCipher returned error: %s", i, err)
- }
-
- var ciphertext [BlockSize]byte
- c.Encrypt(ciphertext[:], test.plaintext)
-
- if !bytes.Equal(ciphertext[:], test.ciphertext) {
- t.Errorf("#%d: incorrect ciphertext. Got %x, wanted %x", i, ciphertext, test.ciphertext)
- }
-
- var plaintext2 [BlockSize]byte
- c.Decrypt(plaintext2[:], ciphertext[:])
-
- if !bytes.Equal(plaintext2[:], test.plaintext) {
- t.Errorf("#%d: incorrect plaintext. Got %x, wanted %x", i, plaintext2, test.plaintext)
- }
- }
-}