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  1. package xchacha20poly1305
  2. import (
  3. "bytes"
  4. "encoding/hex"
  5. "testing"
  6. )
  7. func toHex(bits []byte) string {
  8. return hex.EncodeToString(bits)
  9. }
  10. func fromHex(bits string) []byte {
  11. b, err := hex.DecodeString(bits)
  12. if err != nil {
  13. panic(err)
  14. }
  15. return b
  16. }
  17. func TestHChaCha20(t *testing.T) {
  18. for i, v := range hChaCha20Vectors {
  19. var key [32]byte
  20. var nonce [16]byte
  21. copy(key[:], v.key)
  22. copy(nonce[:], v.nonce)
  23. HChaCha20(&key, &nonce, &key)
  24. if !bytes.Equal(key[:], v.keystream) {
  25. t.Errorf("Test %d: keystream mismatch:\n \t got: %s\n \t want: %s", i, toHex(key[:]), toHex(v.keystream))
  26. }
  27. }
  28. }
  29. var hChaCha20Vectors = []struct {
  30. key, nonce, keystream []byte
  31. }{
  32. {
  33. fromHex("0000000000000000000000000000000000000000000000000000000000000000"),
  34. fromHex("000000000000000000000000000000000000000000000000"),
  35. fromHex("1140704c328d1d5d0e30086cdf209dbd6a43b8f41518a11cc387b669b2ee6586"),
  36. },
  37. {
  38. fromHex("8000000000000000000000000000000000000000000000000000000000000000"),
  39. fromHex("000000000000000000000000000000000000000000000000"),
  40. fromHex("7d266a7fd808cae4c02a0a70dcbfbcc250dae65ce3eae7fc210f54cc8f77df86"),
  41. },
  42. {
  43. fromHex("0000000000000000000000000000000000000000000000000000000000000001"),
  44. fromHex("000000000000000000000000000000000000000000000002"),
  45. fromHex("e0c77ff931bb9163a5460c02ac281c2b53d792b1c43fea817e9ad275ae546963"),
  46. },
  47. {
  48. fromHex("000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"),
  49. fromHex("000102030405060708090a0b0c0d0e0f1011121314151617"),
  50. fromHex("51e3ff45a895675c4b33b46c64f4a9ace110d34df6a2ceab486372bacbd3eff6"),
  51. },
  52. {
  53. fromHex("24f11cce8a1b3d61e441561a696c1c1b7e173d084fd4812425435a8896a013dc"),
  54. fromHex("d9660c5900ae19ddad28d6e06e45fe5e"),
  55. fromHex("5966b3eec3bff1189f831f06afe4d4e3be97fa9235ec8c20d08acfbbb4e851e3"),
  56. },
  57. }
  58. func TestVectors(t *testing.T) {
  59. for i, v := range vectors {
  60. if len(v.plaintext) == 0 {
  61. v.plaintext = make([]byte, len(v.ciphertext))
  62. }
  63. var nonce [24]byte
  64. copy(nonce[:], v.nonce)
  65. aead, err := New(v.key)
  66. if err != nil {
  67. t.Error(err)
  68. }
  69. dst := aead.Seal(nil, nonce[:], v.plaintext, v.ad)
  70. if !bytes.Equal(dst, v.ciphertext) {
  71. t.Errorf("Test %d: ciphertext mismatch:\n \t got: %s\n \t want: %s", i, toHex(dst), toHex(v.ciphertext))
  72. }
  73. open, err := aead.Open(nil, nonce[:], dst, v.ad)
  74. if err != nil {
  75. t.Error(err)
  76. }
  77. if !bytes.Equal(open, v.plaintext) {
  78. t.Errorf("Test %d: plaintext mismatch:\n \t got: %s\n \t want: %s", i, string(open), string(v.plaintext))
  79. }
  80. }
  81. }
  82. var vectors = []struct {
  83. key, nonce, ad, plaintext, ciphertext []byte
  84. }{
  85. {
  86. []byte{
  87. 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a,
  88. 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95,
  89. 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
  90. },
  91. []byte{0x07, 0x00, 0x00, 0x00, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b},
  92. []byte{0x50, 0x51, 0x52, 0x53, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7},
  93. []byte(
  94. "Ladies and Gentlemen of the class of '99: If I could offer you only one tip for the future, sunscreen would be it.",
  95. ),
  96. []byte{
  97. 0x45, 0x3c, 0x06, 0x93, 0xa7, 0x40, 0x7f, 0x04, 0xff, 0x4c, 0x56,
  98. 0xae, 0xdb, 0x17, 0xa3, 0xc0, 0xa1, 0xaf, 0xff, 0x01, 0x17, 0x49,
  99. 0x30, 0xfc, 0x22, 0x28, 0x7c, 0x33, 0xdb, 0xcf, 0x0a, 0xc8, 0xb8,
  100. 0x9a, 0xd9, 0x29, 0x53, 0x0a, 0x1b, 0xb3, 0xab, 0x5e, 0x69, 0xf2,
  101. 0x4c, 0x7f, 0x60, 0x70, 0xc8, 0xf8, 0x40, 0xc9, 0xab, 0xb4, 0xf6,
  102. 0x9f, 0xbf, 0xc8, 0xa7, 0xff, 0x51, 0x26, 0xfa, 0xee, 0xbb, 0xb5,
  103. 0x58, 0x05, 0xee, 0x9c, 0x1c, 0xf2, 0xce, 0x5a, 0x57, 0x26, 0x32,
  104. 0x87, 0xae, 0xc5, 0x78, 0x0f, 0x04, 0xec, 0x32, 0x4c, 0x35, 0x14,
  105. 0x12, 0x2c, 0xfc, 0x32, 0x31, 0xfc, 0x1a, 0x8b, 0x71, 0x8a, 0x62,
  106. 0x86, 0x37, 0x30, 0xa2, 0x70, 0x2b, 0xb7, 0x63, 0x66, 0x11, 0x6b,
  107. 0xed, 0x09, 0xe0, 0xfd, 0x5c, 0x6d, 0x84, 0xb6, 0xb0, 0xc1, 0xab,
  108. 0xaf, 0x24, 0x9d, 0x5d, 0xd0, 0xf7, 0xf5, 0xa7, 0xea,
  109. },
  110. },
  111. }