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Diffstat (limited to 'src/pkg/crypto/aes/aes_test.go')
| -rw-r--r-- | src/pkg/crypto/aes/aes_test.go | 421 |
1 files changed, 0 insertions, 421 deletions
diff --git a/src/pkg/crypto/aes/aes_test.go b/src/pkg/crypto/aes/aes_test.go deleted file mode 100644 index 363180931..000000000 --- a/src/pkg/crypto/aes/aes_test.go +++ /dev/null @@ -1,421 +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. - -package aes - -import ( - "testing" -) - -// See const.go for overview of math here. - -// Test that powx is initialized correctly. -// (Can adapt this code to generate it too.) -func TestPowx(t *testing.T) { - p := 1 - for i := 0; i < len(powx); i++ { - if powx[i] != byte(p) { - t.Errorf("powx[%d] = %#x, want %#x", i, powx[i], p) - } - p <<= 1 - if p&0x100 != 0 { - p ^= poly - } - } -} - -// Multiply b and c as GF(2) polynomials modulo poly -func mul(b, c uint32) uint32 { - i := b - j := c - s := uint32(0) - for k := uint32(1); k < 0x100 && j != 0; k <<= 1 { - // Invariant: k == 1<<n, i == b * xⁿ - - if j&k != 0 { - // s += i in GF(2); xor in binary - s ^= i - j ^= k // turn off bit to end loop early - } - - // i *= x in GF(2) modulo the polynomial - i <<= 1 - if i&0x100 != 0 { - i ^= poly - } - } - return s -} - -// Test all mul inputs against bit-by-bit n² algorithm. -func TestMul(t *testing.T) { - for i := uint32(0); i < 256; i++ { - for j := uint32(0); j < 256; j++ { - // Multiply i, j bit by bit. - s := uint8(0) - for k := uint(0); k < 8; k++ { - for l := uint(0); l < 8; l++ { - if i&(1<<k) != 0 && j&(1<<l) != 0 { - s ^= powx[k+l] - } - } - } - if x := mul(i, j); x != uint32(s) { - t.Fatalf("mul(%#x, %#x) = %#x, want %#x", i, j, x, s) - } - } - } -} - -// Check that S-boxes are inverses of each other. -// They have more structure that we could test, -// but if this sanity check passes, we'll assume -// the cut and paste from the FIPS PDF worked. -func TestSboxes(t *testing.T) { - for i := 0; i < 256; i++ { - if j := sbox0[sbox1[i]]; j != byte(i) { - t.Errorf("sbox0[sbox1[%#x]] = %#x", i, j) - } - if j := sbox1[sbox0[i]]; j != byte(i) { - t.Errorf("sbox1[sbox0[%#x]] = %#x", i, j) - } - } -} - -// Test that encryption tables are correct. -// (Can adapt this code to generate them too.) -func TestTe(t *testing.T) { - for i := 0; i < 256; i++ { - s := uint32(sbox0[i]) - s2 := mul(s, 2) - s3 := mul(s, 3) - w := s2<<24 | s<<16 | s<<8 | s3 - te := [][256]uint32{te0, te1, te2, te3} - for j := 0; j < 4; j++ { - if x := te[j][i]; x != w { - t.Fatalf("te[%d][%d] = %#x, want %#x", j, i, x, w) - } - w = w<<24 | w>>8 - } - } -} - -// Test that decryption tables are correct. -// (Can adapt this code to generate them too.) -func TestTd(t *testing.T) { - for i := 0; i < 256; i++ { - s := uint32(sbox1[i]) - s9 := mul(s, 0x9) - sb := mul(s, 0xb) - sd := mul(s, 0xd) - se := mul(s, 0xe) - w := se<<24 | s9<<16 | sd<<8 | sb - td := [][256]uint32{td0, td1, td2, td3} - for j := 0; j < 4; j++ { - if x := td[j][i]; x != w { - t.Fatalf("td[%d][%d] = %#x, want %#x", j, i, x, w) - } - w = w<<24 | w>>8 - } - } -} - -// Test vectors are from FIPS 197: -// http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf - -// Appendix A of FIPS 197: Key expansion examples -type KeyTest struct { - key []byte - enc []uint32 - dec []uint32 // decryption expansion; not in FIPS 197, computed from C implementation. -} - -var keyTests = []KeyTest{ - { - // A.1. Expansion of a 128-bit Cipher Key - []byte{0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c}, - []uint32{ - 0x2b7e1516, 0x28aed2a6, 0xabf71588, 0x09cf4f3c, - 0xa0fafe17, 0x88542cb1, 0x23a33939, 0x2a6c7605, - 0xf2c295f2, 0x7a96b943, 0x5935807a, 0x7359f67f, - 0x3d80477d, 0x4716fe3e, 0x1e237e44, 0x6d7a883b, - 0xef44a541, 0xa8525b7f, 0xb671253b, 0xdb0bad00, - 0xd4d1c6f8, 0x7c839d87, 0xcaf2b8bc, 0x11f915bc, - 0x6d88a37a, 0x110b3efd, 0xdbf98641, 0xca0093fd, - 0x4e54f70e, 0x5f5fc9f3, 0x84a64fb2, 0x4ea6dc4f, - 0xead27321, 0xb58dbad2, 0x312bf560, 0x7f8d292f, - 0xac7766f3, 0x19fadc21, 0x28d12941, 0x575c006e, - 0xd014f9a8, 0xc9ee2589, 0xe13f0cc8, 0xb6630ca6, - }, - []uint32{ - 0xd014f9a8, 0xc9ee2589, 0xe13f0cc8, 0xb6630ca6, - 0xc7b5a63, 0x1319eafe, 0xb0398890, 0x664cfbb4, - 0xdf7d925a, 0x1f62b09d, 0xa320626e, 0xd6757324, - 0x12c07647, 0xc01f22c7, 0xbc42d2f3, 0x7555114a, - 0x6efcd876, 0xd2df5480, 0x7c5df034, 0xc917c3b9, - 0x6ea30afc, 0xbc238cf6, 0xae82a4b4, 0xb54a338d, - 0x90884413, 0xd280860a, 0x12a12842, 0x1bc89739, - 0x7c1f13f7, 0x4208c219, 0xc021ae48, 0x969bf7b, - 0xcc7505eb, 0x3e17d1ee, 0x82296c51, 0xc9481133, - 0x2b3708a7, 0xf262d405, 0xbc3ebdbf, 0x4b617d62, - 0x2b7e1516, 0x28aed2a6, 0xabf71588, 0x9cf4f3c, - }, - }, - { - // A.2. Expansion of a 192-bit Cipher Key - []byte{ - 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5, - 0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b, - }, - []uint32{ - 0x8e73b0f7, 0xda0e6452, 0xc810f32b, 0x809079e5, - 0x62f8ead2, 0x522c6b7b, 0xfe0c91f7, 0x2402f5a5, - 0xec12068e, 0x6c827f6b, 0x0e7a95b9, 0x5c56fec2, - 0x4db7b4bd, 0x69b54118, 0x85a74796, 0xe92538fd, - 0xe75fad44, 0xbb095386, 0x485af057, 0x21efb14f, - 0xa448f6d9, 0x4d6dce24, 0xaa326360, 0x113b30e6, - 0xa25e7ed5, 0x83b1cf9a, 0x27f93943, 0x6a94f767, - 0xc0a69407, 0xd19da4e1, 0xec1786eb, 0x6fa64971, - 0x485f7032, 0x22cb8755, 0xe26d1352, 0x33f0b7b3, - 0x40beeb28, 0x2f18a259, 0x6747d26b, 0x458c553e, - 0xa7e1466c, 0x9411f1df, 0x821f750a, 0xad07d753, - 0xca400538, 0x8fcc5006, 0x282d166a, 0xbc3ce7b5, - 0xe98ba06f, 0x448c773c, 0x8ecc7204, 0x01002202, - }, - nil, - }, - { - // A.3. Expansion of a 256-bit Cipher Key - []byte{ - 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81, - 0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4, - }, - []uint32{ - 0x603deb10, 0x15ca71be, 0x2b73aef0, 0x857d7781, - 0x1f352c07, 0x3b6108d7, 0x2d9810a3, 0x0914dff4, - 0x9ba35411, 0x8e6925af, 0xa51a8b5f, 0x2067fcde, - 0xa8b09c1a, 0x93d194cd, 0xbe49846e, 0xb75d5b9a, - 0xd59aecb8, 0x5bf3c917, 0xfee94248, 0xde8ebe96, - 0xb5a9328a, 0x2678a647, 0x98312229, 0x2f6c79b3, - 0x812c81ad, 0xdadf48ba, 0x24360af2, 0xfab8b464, - 0x98c5bfc9, 0xbebd198e, 0x268c3ba7, 0x09e04214, - 0x68007bac, 0xb2df3316, 0x96e939e4, 0x6c518d80, - 0xc814e204, 0x76a9fb8a, 0x5025c02d, 0x59c58239, - 0xde136967, 0x6ccc5a71, 0xfa256395, 0x9674ee15, - 0x5886ca5d, 0x2e2f31d7, 0x7e0af1fa, 0x27cf73c3, - 0x749c47ab, 0x18501dda, 0xe2757e4f, 0x7401905a, - 0xcafaaae3, 0xe4d59b34, 0x9adf6ace, 0xbd10190d, - 0xfe4890d1, 0xe6188d0b, 0x046df344, 0x706c631e, - }, - nil, - }, -} - -// Test key expansion against FIPS 197 examples. -func TestExpandKey(t *testing.T) { -L: - for i, tt := range keyTests { - enc := make([]uint32, len(tt.enc)) - var dec []uint32 - if tt.dec != nil { - dec = make([]uint32, len(tt.dec)) - } - // This test could only test Go version of expandKey because asm - // version might use different memory layout for expanded keys - // This is OK because we don't expose expanded keys to the outside - expandKeyGo(tt.key, enc, dec) - for j, v := range enc { - if v != tt.enc[j] { - t.Errorf("key %d: enc[%d] = %#x, want %#x", i, j, v, tt.enc[j]) - continue L - } - } - if dec != nil { - for j, v := range dec { - if v != tt.dec[j] { - t.Errorf("key %d: dec[%d] = %#x, want %#x", i, j, v, tt.dec[j]) - continue L - } - } - } - } -} - -// Appendix B, C of FIPS 197: Cipher examples, Example vectors. -type CryptTest struct { - key []byte - in []byte - out []byte -} - -var encryptTests = []CryptTest{ - { - // Appendix B. - []byte{0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c}, - []byte{0x32, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d, 0x31, 0x31, 0x98, 0xa2, 0xe0, 0x37, 0x07, 0x34}, - []byte{0x39, 0x25, 0x84, 0x1d, 0x02, 0xdc, 0x09, 0xfb, 0xdc, 0x11, 0x85, 0x97, 0x19, 0x6a, 0x0b, 0x32}, - }, - { - // Appendix C.1. AES-128 - []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}, - []byte{0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff}, - []byte{0x69, 0xc4, 0xe0, 0xd8, 0x6a, 0x7b, 0x04, 0x30, 0xd8, 0xcd, 0xb7, 0x80, 0x70, 0xb4, 0xc5, 0x5a}, - }, - { - // Appendix C.2. AES-192 - []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, - }, - []byte{0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff}, - []byte{0xdd, 0xa9, 0x7c, 0xa4, 0x86, 0x4c, 0xdf, 0xe0, 0x6e, 0xaf, 0x70, 0xa0, 0xec, 0x0d, 0x71, 0x91}, - }, - { - // Appendix C.3. AES-256 - []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, - }, - []byte{0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff}, - []byte{0x8e, 0xa2, 0xb7, 0xca, 0x51, 0x67, 0x45, 0xbf, 0xea, 0xfc, 0x49, 0x90, 0x4b, 0x49, 0x60, 0x89}, - }, -} - -// Test encryptBlock against FIPS 197 examples. -func TestEncryptBlock(t *testing.T) { - for i, tt := range encryptTests { - n := len(tt.key) + 28 - enc := make([]uint32, n) - dec := make([]uint32, n) - expandKey(tt.key, enc, dec) - out := make([]byte, len(tt.in)) - encryptBlock(enc, out, tt.in) - for j, v := range out { - if v != tt.out[j] { - t.Errorf("encryptBlock %d: out[%d] = %#x, want %#x", i, j, v, tt.out[j]) - break - } - } - } -} - -// Test decryptBlock against FIPS 197 examples. -func TestDecryptBlock(t *testing.T) { - for i, tt := range encryptTests { - n := len(tt.key) + 28 - enc := make([]uint32, n) - dec := make([]uint32, n) - expandKey(tt.key, enc, dec) - plain := make([]byte, len(tt.in)) - decryptBlock(dec, plain, tt.out) - for j, v := range plain { - if v != tt.in[j] { - t.Errorf("decryptBlock %d: plain[%d] = %#x, want %#x", i, j, v, tt.in[j]) - break - } - } - } -} - -// Test Cipher Encrypt method against FIPS 197 examples. -func TestCipherEncrypt(t *testing.T) { - for i, tt := range encryptTests { - c, err := NewCipher(tt.key) - if err != nil { - t.Errorf("NewCipher(%d bytes) = %s", len(tt.key), err) - continue - } - out := make([]byte, len(tt.in)) - c.Encrypt(out, tt.in) - for j, v := range out { - if v != tt.out[j] { - t.Errorf("Cipher.Encrypt %d: out[%d] = %#x, want %#x", i, j, v, tt.out[j]) - break - } - } - } -} - -// Test Cipher Decrypt against FIPS 197 examples. -func TestCipherDecrypt(t *testing.T) { - for i, tt := range encryptTests { - c, err := NewCipher(tt.key) - if err != nil { - t.Errorf("NewCipher(%d bytes) = %s", len(tt.key), err) - continue - } - plain := make([]byte, len(tt.in)) - c.Decrypt(plain, tt.out) - for j, v := range plain { - if v != tt.in[j] { - t.Errorf("decryptBlock %d: plain[%d] = %#x, want %#x", i, j, v, tt.in[j]) - break - } - } - } -} - -// Test short input/output. -// Assembly used to not notice. -// See issue 7928. -func TestShortBlocks(t *testing.T) { - bytes := func(n int) []byte { return make([]byte, n) } - - c, _ := NewCipher(bytes(16)) - - mustPanic(t, "crypto/aes: input not full block", func() { c.Encrypt(bytes(1), bytes(1)) }) - mustPanic(t, "crypto/aes: input not full block", func() { c.Decrypt(bytes(1), bytes(1)) }) - mustPanic(t, "crypto/aes: input not full block", func() { c.Encrypt(bytes(100), bytes(1)) }) - mustPanic(t, "crypto/aes: input not full block", func() { c.Decrypt(bytes(100), bytes(1)) }) - mustPanic(t, "crypto/aes: output not full block", func() { c.Encrypt(bytes(1), bytes(100)) }) - mustPanic(t, "crypto/aes: output not full block", func() { c.Decrypt(bytes(1), bytes(100)) }) -} - -func mustPanic(t *testing.T, msg string, f func()) { - defer func() { - err := recover() - if err == nil { - t.Errorf("function did not panic, wanted %q", msg) - } else if err != msg { - t.Errorf("got panic %v, wanted %q", err, msg) - } - }() - f() -} - -func BenchmarkEncrypt(b *testing.B) { - tt := encryptTests[0] - c, err := NewCipher(tt.key) - if err != nil { - b.Fatal("NewCipher:", err) - } - out := make([]byte, len(tt.in)) - b.SetBytes(int64(len(out))) - b.ResetTimer() - for i := 0; i < b.N; i++ { - c.Encrypt(out, tt.in) - } -} - -func BenchmarkDecrypt(b *testing.B) { - tt := encryptTests[0] - c, err := NewCipher(tt.key) - if err != nil { - b.Fatal("NewCipher:", err) - } - out := make([]byte, len(tt.out)) - b.SetBytes(int64(len(out))) - b.ResetTimer() - for i := 0; i < b.N; i++ { - c.Decrypt(out, tt.out) - } -} - -func BenchmarkExpand(b *testing.B) { - tt := encryptTests[0] - n := len(tt.key) + 28 - c := &aesCipher{make([]uint32, n), make([]uint32, n)} - b.ResetTimer() - for i := 0; i < b.N; i++ { - expandKey(tt.key, c.enc, c.dec) - } -} |