1 files changed, 498 insertions, 0 deletions

diff --git a/vendor/gopkg.in/square/go-jose.v1/cipher/cbc_hmac_test.go b/vendor/gopkg.in/square/go-jose.v1/cipher/cbc_hmac_test.go
new file mode 100644
index 000000000..40bcb20fa
--- /dev/null
+++ b/vendor/gopkg.in/square/go-jose.v1/cipher/cbc_hmac_test.go
@@ -0,0 +1,498 @@
+/*-
+ * Copyright 2014 Square Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package josecipher
+
+import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"io"
+	"strings"
+	"testing"
+)
+
+func TestInvalidInputs(t *testing.T) {
+	key := []byte{
+		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+	}
+
+	nonce := []byte{
+		92, 80, 104, 49, 133, 25, 161, 215, 173, 101, 219, 211, 136, 91, 210, 145}
+
+	aead, _ := NewCBCHMAC(key, aes.NewCipher)
+	ciphertext := aead.Seal(nil, nonce, []byte("plaintext"), []byte("aad"))
+
+	// Changed AAD, must fail
+	_, err := aead.Open(nil, nonce, ciphertext, []byte("INVALID"))
+	if err == nil {
+		t.Error("must detect invalid aad")
+	}
+
+	// Empty ciphertext, must fail
+	_, err = aead.Open(nil, nonce, []byte{}, []byte("aad"))
+	if err == nil {
+		t.Error("must detect invalid/empty ciphertext")
+	}
+
+	// Corrupt ciphertext, must fail
+	corrupt := make([]byte, len(ciphertext))
+	copy(corrupt, ciphertext)
+	corrupt[0] ^= 0xFF
+
+	_, err = aead.Open(nil, nonce, corrupt, []byte("aad"))
+	if err == nil {
+		t.Error("must detect corrupt ciphertext")
+	}
+
+	// Corrupt authtag, must fail
+	copy(corrupt, ciphertext)
+	corrupt[len(ciphertext)-1] ^= 0xFF
+
+	_, err = aead.Open(nil, nonce, corrupt, []byte("aad"))
+	if err == nil {
+		t.Error("must detect corrupt authtag")
+	}
+
+	// Truncated data, must fail
+	_, err = aead.Open(nil, nonce, ciphertext[:10], []byte("aad"))
+	if err == nil {
+		t.Error("must detect corrupt authtag")
+	}
+}
+
+func TestVectorsAESCBC128(t *testing.T) {
+	// Source: http://tools.ietf.org/html/draft-ietf-jose-json-web-encryption-29#appendix-A.2
+	plaintext := []byte{
+		76, 105, 118, 101, 32, 108, 111, 110, 103, 32, 97, 110, 100, 32,
+		112, 114, 111, 115, 112, 101, 114, 46}
+
+	aad := []byte{
+		101, 121, 74, 104, 98, 71, 99, 105, 79, 105, 74, 83, 85, 48, 69,
+		120, 88, 122, 85, 105, 76, 67, 74, 108, 98, 109, 77, 105, 79, 105,
+		74, 66, 77, 84, 73, 52, 81, 48, 74, 68, 76, 85, 104, 84, 77, 106, 85,
+		50, 73, 110, 48}
+
+	expectedCiphertext := []byte{
+		40, 57, 83, 181, 119, 33, 133, 148, 198, 185, 243, 24, 152, 230, 6,
+		75, 129, 223, 127, 19, 210, 82, 183, 230, 168, 33, 215, 104, 143,
+		112, 56, 102}
+
+	expectedAuthtag := []byte{
+		246, 17, 244, 190, 4, 95, 98, 3, 231, 0, 115, 157, 242, 203, 100,
+		191}
+
+	key := []byte{
+		4, 211, 31, 197, 84, 157, 252, 254, 11, 100, 157, 250, 63, 170, 106, 206,
+		107, 124, 212, 45, 111, 107, 9, 219, 200, 177, 0, 240, 143, 156, 44, 207}
+
+	nonce := []byte{
+		3, 22, 60, 12, 43, 67, 104, 105, 108, 108, 105, 99, 111, 116, 104, 101}
+
+	enc, err := NewCBCHMAC(key, aes.NewCipher)
+	out := enc.Seal(nil, nonce, plaintext, aad)
+	if err != nil {
+		t.Error("Unable to encrypt:", err)
+		return
+	}
+
+	if bytes.Compare(out[:len(out)-16], expectedCiphertext) != 0 {
+		t.Error("Ciphertext did not match")
+	}
+	if bytes.Compare(out[len(out)-16:], expectedAuthtag) != 0 {
+		t.Error("Auth tag did not match")
+	}
+}
+
+func TestVectorsAESCBC256(t *testing.T) {
+	// Source: https://tools.ietf.org/html/draft-mcgrew-aead-aes-cbc-hmac-sha2-05#section-5.4
+	plaintext := []byte{
+		0x41, 0x20, 0x63, 0x69, 0x70, 0x68, 0x65, 0x72, 0x20, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x20,
+		0x6d, 0x75, 0x73, 0x74, 0x20, 0x6e, 0x6f, 0x74, 0x20, 0x62, 0x65, 0x20, 0x72, 0x65, 0x71, 0x75,
+		0x69, 0x72, 0x65, 0x64, 0x20, 0x74, 0x6f, 0x20, 0x62, 0x65, 0x20, 0x73, 0x65, 0x63, 0x72, 0x65,
+		0x74, 0x2c, 0x20, 0x61, 0x6e, 0x64, 0x20, 0x69, 0x74, 0x20, 0x6d, 0x75, 0x73, 0x74, 0x20, 0x62,
+		0x65, 0x20, 0x61, 0x62, 0x6c, 0x65, 0x20, 0x74, 0x6f, 0x20, 0x66, 0x61, 0x6c, 0x6c, 0x20, 0x69,
+		0x6e, 0x74, 0x6f, 0x20, 0x74, 0x68, 0x65, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x73, 0x20, 0x6f, 0x66,
+		0x20, 0x74, 0x68, 0x65, 0x20, 0x65, 0x6e, 0x65, 0x6d, 0x79, 0x20, 0x77, 0x69, 0x74, 0x68, 0x6f,
+		0x75, 0x74, 0x20, 0x69, 0x6e, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x6e, 0x69, 0x65, 0x6e, 0x63, 0x65}
+
+	aad := []byte{
+		0x54, 0x68, 0x65, 0x20, 0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x70, 0x72, 0x69, 0x6e, 0x63,
+		0x69, 0x70, 0x6c, 0x65, 0x20, 0x6f, 0x66, 0x20, 0x41, 0x75, 0x67, 0x75, 0x73, 0x74, 0x65, 0x20,
+		0x4b, 0x65, 0x72, 0x63, 0x6b, 0x68, 0x6f, 0x66, 0x66, 0x73}
+
+	expectedCiphertext := []byte{
+		0x4a, 0xff, 0xaa, 0xad, 0xb7, 0x8c, 0x31, 0xc5, 0xda, 0x4b, 0x1b, 0x59, 0x0d, 0x10, 0xff, 0xbd,
+		0x3d, 0xd8, 0xd5, 0xd3, 0x02, 0x42, 0x35, 0x26, 0x91, 0x2d, 0xa0, 0x37, 0xec, 0xbc, 0xc7, 0xbd,
+		0x82, 0x2c, 0x30, 0x1d, 0xd6, 0x7c, 0x37, 0x3b, 0xcc, 0xb5, 0x84, 0xad, 0x3e, 0x92, 0x79, 0xc2,
+		0xe6, 0xd1, 0x2a, 0x13, 0x74, 0xb7, 0x7f, 0x07, 0x75, 0x53, 0xdf, 0x82, 0x94, 0x10, 0x44, 0x6b,
+		0x36, 0xeb, 0xd9, 0x70, 0x66, 0x29, 0x6a, 0xe6, 0x42, 0x7e, 0xa7, 0x5c, 0x2e, 0x08, 0x46, 0xa1,
+		0x1a, 0x09, 0xcc, 0xf5, 0x37, 0x0d, 0xc8, 0x0b, 0xfe, 0xcb, 0xad, 0x28, 0xc7, 0x3f, 0x09, 0xb3,
+		0xa3, 0xb7, 0x5e, 0x66, 0x2a, 0x25, 0x94, 0x41, 0x0a, 0xe4, 0x96, 0xb2, 0xe2, 0xe6, 0x60, 0x9e,
+		0x31, 0xe6, 0xe0, 0x2c, 0xc8, 0x37, 0xf0, 0x53, 0xd2, 0x1f, 0x37, 0xff, 0x4f, 0x51, 0x95, 0x0b,
+		0xbe, 0x26, 0x38, 0xd0, 0x9d, 0xd7, 0xa4, 0x93, 0x09, 0x30, 0x80, 0x6d, 0x07, 0x03, 0xb1, 0xf6}
+
+	expectedAuthtag := []byte{
+		0x4d, 0xd3, 0xb4, 0xc0, 0x88, 0xa7, 0xf4, 0x5c, 0x21, 0x68, 0x39, 0x64, 0x5b, 0x20, 0x12, 0xbf,
+		0x2e, 0x62, 0x69, 0xa8, 0xc5, 0x6a, 0x81, 0x6d, 0xbc, 0x1b, 0x26, 0x77, 0x61, 0x95, 0x5b, 0xc5}
+
+	key := []byte{
+		0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+		0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+		0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+		0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f}
+
+	nonce := []byte{
+		0x1a, 0xf3, 0x8c, 0x2d, 0xc2, 0xb9, 0x6f, 0xfd, 0xd8, 0x66, 0x94, 0x09, 0x23, 0x41, 0xbc, 0x04}
+
+	enc, err := NewCBCHMAC(key, aes.NewCipher)
+	out := enc.Seal(nil, nonce, plaintext, aad)
+	if err != nil {
+		t.Error("Unable to encrypt:", err)
+		return
+	}
+
+	if bytes.Compare(out[:len(out)-32], expectedCiphertext) != 0 {
+		t.Error("Ciphertext did not match, got", out[:len(out)-32], "wanted", expectedCiphertext)
+	}
+	if bytes.Compare(out[len(out)-32:], expectedAuthtag) != 0 {
+		t.Error("Auth tag did not match, got", out[len(out)-32:], "wanted", expectedAuthtag)
+	}
+}
+
+func TestAESCBCRoundtrip(t *testing.T) {
+	key128 := []byte{
+		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
+
+	key192 := []byte{
+		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+		0, 1, 2, 3, 4, 5, 6, 7,
+		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+		0, 1, 2, 3, 4, 5, 6, 7}
+
+	key256 := []byte{
+		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
+
+	nonce := []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
+
+	RunRoundtrip(t, key128, nonce)
+	RunRoundtrip(t, key192, nonce)
+	RunRoundtrip(t, key256, nonce)
+}
+
+func RunRoundtrip(t *testing.T, key, nonce []byte) {
+	aead, err := NewCBCHMAC(key, aes.NewCipher)
+	if err != nil {
+		panic(err)
+	}
+
+	if aead.NonceSize() != len(nonce) {
+		panic("invalid nonce")
+	}
+
+	// Test pre-existing data in dst buffer
+	dst := []byte{15, 15, 15, 15}
+	plaintext := []byte{0, 0, 0, 0}
+	aad := []byte{4, 3, 2, 1}
+
+	result := aead.Seal(dst, nonce, plaintext, aad)
+	if bytes.Compare(dst, result[:4]) != 0 {
+		t.Error("Existing data in dst not preserved")
+	}
+
+	// Test pre-existing (empty) dst buffer with sufficient capacity
+	dst = make([]byte, 256)[:0]
+	result, err = aead.Open(dst, nonce, result[4:], aad)
+	if err != nil {
+		panic(err)
+	}
+
+	if bytes.Compare(result, plaintext) != 0 {
+		t.Error("Plaintext does not match output")
+	}
+}
+
+func TestAESCBCOverhead(t *testing.T) {
+	aead, err := NewCBCHMAC(make([]byte, 32), aes.NewCipher)
+	if err != nil {
+		panic(err)
+	}
+
+	if aead.Overhead() != 32 {
+		t.Error("CBC-HMAC reports incorrect overhead value")
+	}
+}
+
+func TestPadding(t *testing.T) {
+	for i := 0; i < 256; i++ {
+		slice := make([]byte, i)
+		padded := padBuffer(slice, 16)
+		if len(padded)%16 != 0 {
+			t.Error("failed to pad slice properly", i)
+			return
+		}
+		unpadded, err := unpadBuffer(padded, 16)
+		if err != nil || len(unpadded) != i {
+			t.Error("failed to unpad slice properly", i)
+			return
+		}
+	}
+}
+
+func TestInvalidKey(t *testing.T) {
+	key := make([]byte, 30)
+	_, err := NewCBCHMAC(key, aes.NewCipher)
+	if err == nil {
+		t.Error("should not be able to instantiate CBC-HMAC with invalid key")
+	}
+}
+
+func TestTruncatedCiphertext(t *testing.T) {
+	key := make([]byte, 32)
+	nonce := make([]byte, 16)
+	data := make([]byte, 32)
+
+	io.ReadFull(rand.Reader, key)
+	io.ReadFull(rand.Reader, nonce)
+
+	aead, err := NewCBCHMAC(key, aes.NewCipher)
+	if err != nil {
+		panic(err)
+	}
+
+	ctx := aead.(*cbcAEAD)
+	ct := aead.Seal(nil, nonce, data, nil)
+
+	// Truncated ciphertext, but with correct auth tag
+	truncated, tail := resize(ct[:len(ct)-ctx.authtagBytes-2], uint64(len(ct))-2)
+	copy(tail, ctx.computeAuthTag(nil, nonce, truncated[:len(truncated)-ctx.authtagBytes]))
+
+	// Open should fail
+	_, err = aead.Open(nil, nonce, truncated, nil)
+	if err == nil {
+		t.Error("open on truncated ciphertext should fail")
+	}
+}
+
+func TestInvalidPaddingOpen(t *testing.T) {
+	key := make([]byte, 32)
+	nonce := make([]byte, 16)
+
+	// Plaintext with invalid padding
+	plaintext := padBuffer(make([]byte, 28), aes.BlockSize)
+	plaintext[len(plaintext)-1] = 0xFF
+
+	io.ReadFull(rand.Reader, key)
+	io.ReadFull(rand.Reader, nonce)
+
+	block, _ := aes.NewCipher(key)
+	cbc := cipher.NewCBCEncrypter(block, nonce)
+	buffer := append([]byte{}, plaintext...)
+	cbc.CryptBlocks(buffer, buffer)
+
+	aead, _ := NewCBCHMAC(key, aes.NewCipher)
+	ctx := aead.(*cbcAEAD)
+
+	// Mutated ciphertext, but with correct auth tag
+	size := uint64(len(buffer))
+	ciphertext, tail := resize(buffer, size+(uint64(len(key))/2))
+	copy(tail, ctx.computeAuthTag(nil, nonce, ciphertext[:size]))
+
+	// Open should fail (b/c of invalid padding, even though tag matches)
+	_, err := aead.Open(nil, nonce, ciphertext, nil)
+	if err == nil || !strings.Contains(err.Error(), "invalid padding") {
+		t.Error("no or unexpected error on open with invalid padding:", err)
+	}
+}
+
+func TestInvalidPadding(t *testing.T) {
+	for i := 0; i < 256; i++ {
+		slice := make([]byte, i)
+		padded := padBuffer(slice, 16)
+		if len(padded)%16 != 0 {
+			t.Error("failed to pad slice properly", i)
+			return
+		}
+
+		paddingBytes := 16 - (i % 16)
+
+		// Mutate padding for testing
+		for j := 1; j <= paddingBytes; j++ {
+			mutated := make([]byte, len(padded))
+			copy(mutated, padded)
+			mutated[len(mutated)-j] ^= 0xFF
+
+			_, err := unpadBuffer(mutated, 16)
+			if err == nil {
+				t.Error("unpad on invalid padding should fail", i)
+				return
+			}
+		}
+
+		// Test truncated padding
+		_, err := unpadBuffer(padded[:len(padded)-1], 16)
+		if err == nil {
+			t.Error("unpad on truncated padding should fail", i)
+			return
+		}
+	}
+}
+
+func TestZeroLengthPadding(t *testing.T) {
+	data := make([]byte, 16)
+	data, err := unpadBuffer(data, 16)
+	if err == nil {
+		t.Error("padding with 0x00 should never be valid")
+	}
+}
+
+func benchEncryptCBCHMAC(b *testing.B, keySize, chunkSize int) {
+	key := make([]byte, keySize*2)
+	nonce := make([]byte, 16)
+
+	io.ReadFull(rand.Reader, key)
+	io.ReadFull(rand.Reader, nonce)
+
+	chunk := make([]byte, chunkSize)
+
+	aead, err := NewCBCHMAC(key, aes.NewCipher)
+	if err != nil {
+		panic(err)
+	}
+
+	b.SetBytes(int64(chunkSize))
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		aead.Seal(nil, nonce, chunk, nil)
+	}
+}
+
+func benchDecryptCBCHMAC(b *testing.B, keySize, chunkSize int) {
+	key := make([]byte, keySize*2)
+	nonce := make([]byte, 16)
+
+	io.ReadFull(rand.Reader, key)
+	io.ReadFull(rand.Reader, nonce)
+
+	chunk := make([]byte, chunkSize)
+
+	aead, err := NewCBCHMAC(key, aes.NewCipher)
+	if err != nil {
+		panic(err)
+	}
+
+	out := aead.Seal(nil, nonce, chunk, nil)
+
+	b.SetBytes(int64(chunkSize))
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		aead.Open(nil, nonce, out, nil)
+	}
+}
+
+func BenchmarkEncryptAES128_CBCHMAC_1k(b *testing.B) {
+	benchEncryptCBCHMAC(b, 16, 1024)
+}
+
+func BenchmarkEncryptAES128_CBCHMAC_64k(b *testing.B) {
+	benchEncryptCBCHMAC(b, 16, 65536)
+}
+
+func BenchmarkEncryptAES128_CBCHMAC_1MB(b *testing.B) {
+	benchEncryptCBCHMAC(b, 16, 1048576)
+}
+
+func BenchmarkEncryptAES128_CBCHMAC_64MB(b *testing.B) {
+	benchEncryptCBCHMAC(b, 16, 67108864)
+}
+
+func BenchmarkDecryptAES128_CBCHMAC_1k(b *testing.B) {
+	benchDecryptCBCHMAC(b, 16, 1024)
+}
+
+func BenchmarkDecryptAES128_CBCHMAC_64k(b *testing.B) {
+	benchDecryptCBCHMAC(b, 16, 65536)
+}
+
+func BenchmarkDecryptAES128_CBCHMAC_1MB(b *testing.B) {
+	benchDecryptCBCHMAC(b, 16, 1048576)
+}
+
+func BenchmarkDecryptAES128_CBCHMAC_64MB(b *testing.B) {
+	benchDecryptCBCHMAC(b, 16, 67108864)
+}
+
+func BenchmarkEncryptAES192_CBCHMAC_64k(b *testing.B) {
+	benchEncryptCBCHMAC(b, 24, 65536)
+}
+
+func BenchmarkEncryptAES192_CBCHMAC_1MB(b *testing.B) {
+	benchEncryptCBCHMAC(b, 24, 1048576)
+}
+
+func BenchmarkEncryptAES192_CBCHMAC_64MB(b *testing.B) {
+	benchEncryptCBCHMAC(b, 24, 67108864)
+}
+
+func BenchmarkDecryptAES192_CBCHMAC_1k(b *testing.B) {
+	benchDecryptCBCHMAC(b, 24, 1024)
+}
+
+func BenchmarkDecryptAES192_CBCHMAC_64k(b *testing.B) {
+	benchDecryptCBCHMAC(b, 24, 65536)
+}
+
+func BenchmarkDecryptAES192_CBCHMAC_1MB(b *testing.B) {
+	benchDecryptCBCHMAC(b, 24, 1048576)
+}
+
+func BenchmarkDecryptAES192_CBCHMAC_64MB(b *testing.B) {
+	benchDecryptCBCHMAC(b, 24, 67108864)
+}
+
+func BenchmarkEncryptAES256_CBCHMAC_64k(b *testing.B) {
+	benchEncryptCBCHMAC(b, 32, 65536)
+}
+
+func BenchmarkEncryptAES256_CBCHMAC_1MB(b *testing.B) {
+	benchEncryptCBCHMAC(b, 32, 1048576)
+}
+
+func BenchmarkEncryptAES256_CBCHMAC_64MB(b *testing.B) {
+	benchEncryptCBCHMAC(b, 32, 67108864)
+}
+
+func BenchmarkDecryptAES256_CBCHMAC_1k(b *testing.B) {
+	benchDecryptCBCHMAC(b, 32, 1032)
+}
+
+func BenchmarkDecryptAES256_CBCHMAC_64k(b *testing.B) {
+	benchDecryptCBCHMAC(b, 32, 65536)
+}
+
+func BenchmarkDecryptAES256_CBCHMAC_1MB(b *testing.B) {
+	benchDecryptCBCHMAC(b, 32, 1048576)
+}
+
+func BenchmarkDecryptAES256_CBCHMAC_64MB(b *testing.B) {
+	benchDecryptCBCHMAC(b, 32, 67108864)
+}