1package runner 2 3import ( 4 "bytes" 5 "encoding/hex" 6 "testing" 7) 8 9// See RFC 7539, section 2.1.1. 10func TestChaChaQuarterRound(t *testing.T) { 11 state := [16]uint32{0x11111111, 0x01020304, 0x9b8d6f43, 0x01234567} 12 chaChaQuarterRound(&state, 0, 1, 2, 3) 13 14 a, b, c, d := state[0], state[1], state[2], state[3] 15 if a != 0xea2a92f4 || b != 0xcb1cf8ce || c != 0x4581472e || d != 0x5881c4bb { 16 t.Errorf("Incorrect results: %x", state) 17 } 18} 19 20// See RFC 7539, section 2.2.1. 21func TestChaChaQuarterRoundState(t *testing.T) { 22 state := [16]uint32{ 23 0x879531e0, 0xc5ecf37d, 0x516461b1, 0xc9a62f8a, 24 0x44c20ef3, 0x3390af7f, 0xd9fc690b, 0x2a5f714c, 25 0x53372767, 0xb00a5631, 0x974c541a, 0x359e9963, 26 0x5c971061, 0x3d631689, 0x2098d9d6, 0x91dbd320, 27 } 28 chaChaQuarterRound(&state, 2, 7, 8, 13) 29 30 expected := [16]uint32{ 31 0x879531e0, 0xc5ecf37d, 0xbdb886dc, 0xc9a62f8a, 32 0x44c20ef3, 0x3390af7f, 0xd9fc690b, 0xcfacafd2, 33 0xe46bea80, 0xb00a5631, 0x974c541a, 0x359e9963, 34 0x5c971061, 0xccc07c79, 0x2098d9d6, 0x91dbd320, 35 } 36 for i := range state { 37 if state[i] != expected[i] { 38 t.Errorf("Mismatch at %d: %x vs %x", i, state, expected) 39 } 40 } 41} 42 43// See RFC 7539, section 2.3.2. 44func TestChaCha20Block(t *testing.T) { 45 state := [16]uint32{ 46 0x61707865, 0x3320646e, 0x79622d32, 0x6b206574, 47 0x03020100, 0x07060504, 0x0b0a0908, 0x0f0e0d0c, 48 0x13121110, 0x17161514, 0x1b1a1918, 0x1f1e1d1c, 49 0x00000001, 0x09000000, 0x4a000000, 0x00000000, 50 } 51 out := make([]byte, 64) 52 chaCha20Block(&state, out) 53 54 expected := []byte{ 55 0x10, 0xf1, 0xe7, 0xe4, 0xd1, 0x3b, 0x59, 0x15, 56 0x50, 0x0f, 0xdd, 0x1f, 0xa3, 0x20, 0x71, 0xc4, 57 0xc7, 0xd1, 0xf4, 0xc7, 0x33, 0xc0, 0x68, 0x03, 58 0x04, 0x22, 0xaa, 0x9a, 0xc3, 0xd4, 0x6c, 0x4e, 59 0xd2, 0x82, 0x64, 0x46, 0x07, 0x9f, 0xaa, 0x09, 60 0x14, 0xc2, 0xd7, 0x05, 0xd9, 0x8b, 0x02, 0xa2, 61 0xb5, 0x12, 0x9c, 0xd1, 0xde, 0x16, 0x4e, 0xb9, 62 0xcb, 0xd0, 0x83, 0xe8, 0xa2, 0x50, 0x3c, 0x4e, 63 } 64 if !bytes.Equal(out, expected) { 65 t.Errorf("Got %x, wanted %x", out, expected) 66 } 67} 68 69func decodeHexOrPanic(in string) []byte { 70 out, err := hex.DecodeString(in) 71 if err != nil { 72 panic(err) 73 } 74 return out 75} 76 77// See draft-agl-tls-chacha20poly1305-04, section 7. 78func TestChaCha20Poly1305Old(t *testing.T) { 79 key := decodeHexOrPanic("4290bcb154173531f314af57f3be3b5006da371ece272afa1b5dbdd1100a1007") 80 input := decodeHexOrPanic("86d09974840bded2a5ca") 81 nonce := decodeHexOrPanic("cd7cf67be39c794a") 82 ad := decodeHexOrPanic("87e229d4500845a079c0") 83 output := decodeHexOrPanic("e3e446f7ede9a19b62a4677dabf4e3d24b876bb284753896e1d6") 84 85 aead, err := newChaCha20Poly1305Old(key) 86 if err != nil { 87 t.Fatal(err) 88 } 89 90 out, err := aead.Open(nil, nonce, output, ad) 91 if err != nil { 92 t.Errorf("Open failed: %s", err) 93 } else if !bytes.Equal(out, input) { 94 t.Errorf("Open gave %x, wanted %x", out, input) 95 } 96 97 out = aead.Seal(nil, nonce, input, ad) 98 if !bytes.Equal(out, output) { 99 t.Errorf("Open gave %x, wanted %x", out, output) 100 } 101 102 out[0]++ 103 _, err = aead.Open(nil, nonce, out, ad) 104 if err == nil { 105 t.Errorf("Open on malformed data unexpectedly succeeded") 106 } 107} 108 109var chaCha20Poly1305TestVectors = []struct { 110 key, input, nonce, ad, output string 111}{ 112 { 113 // See RFC 7539, section 2.8.2. 114 key: "808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f", 115 input: "4c616469657320616e642047656e746c656d656e206f662074686520636c617373206f66202739393a204966204920636f756c64206f6666657220796f75206f6e6c79206f6e652074697020666f7220746865206675747572652c2073756e73637265656e20776f756c642062652069742e", 116 nonce: "070000004041424344454647", 117 ad: "50515253c0c1c2c3c4c5c6c7", 118 output: "d31a8d34648e60db7b86afbc53ef7ec2a4aded51296e08fea9e2b5a736ee62d63dbea45e8ca9671282fafb69da92728b1a71de0a9e060b2905d6a5b67ecd3b3692ddbd7f2d778b8c9803aee328091b58fab324e4fad675945585808b4831d7bc3ff4def08e4b7a9de576d26586cec64b61161ae10b594f09e26a7e902ecbd0600691", 119 }, 120 { 121 // See RFC 7539, section A.5. 122 key: "1c9240a5eb55d38af333888604f6b5f0473917c1402b80099dca5cbc207075c0", 123 input: "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", 124 nonce: "000000000102030405060708", 125 ad: "f33388860000000000004e91", 126 output: "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", 127 }, 128} 129 130// See draft-agl-tls-chacha20poly1305-04, section 7. 131func TestChaCha20Poly1305(t *testing.T) { 132 for i, tt := range chaCha20Poly1305TestVectors { 133 key := decodeHexOrPanic(tt.key) 134 input := decodeHexOrPanic(tt.input) 135 nonce := decodeHexOrPanic(tt.nonce) 136 ad := decodeHexOrPanic(tt.ad) 137 output := decodeHexOrPanic(tt.output) 138 139 aead, err := newChaCha20Poly1305(key) 140 if err != nil { 141 t.Fatal(err) 142 } 143 144 out, err := aead.Open(nil, nonce, output, ad) 145 if err != nil { 146 t.Errorf("%d. Open failed: %s", i, err) 147 } else if !bytes.Equal(out, input) { 148 t.Errorf("%d. Open gave %x, wanted %x", i, out, input) 149 } 150 151 out = aead.Seal(nil, nonce, input, ad) 152 if !bytes.Equal(out, output) { 153 t.Errorf("%d. Open gave %x, wanted %x", i, out, output) 154 } 155 156 out[0]++ 157 _, err = aead.Open(nil, nonce, out, ad) 158 if err == nil { 159 t.Errorf("%d. Open on malformed data unexpectedly succeeded", i) 160 } 161 } 162} 163