Module: Tapyrus::SLIP39

Defined in:
lib/tapyrus/slip39.rb,
lib/tapyrus/slip39/sss.rb,
lib/tapyrus/slip39/share.rb

Defined Under Namespace

Classes: SSS, Share

Constant Summary collapse

WORDS = 
File.readlines("#{__dir__}/slip39/wordlist/english.txt").map(&:strip)
RADIX_BITS =

The length of the radix in bits.

10
RADIX =

The number of words in the wordlist.

2**RADIX_BITS
ID_LENGTH_BITS =

The length of the random identifier in bits.

15
ITERATION_EXP_LENGTH_BITS =

The length of the iteration exponent in bits.

5
ID_EXP_LENGTH_WORDS =

The length of the random identifier and iteration exponent in words.

bits_to_words(ID_LENGTH_BITS + ITERATION_EXP_LENGTH_BITS)
MAX_SHARE_COUNT =

The maximum number of shares that can be created.

16
CHECKSUM_LENGTH_WORDS =

The length of the RS1024 checksum in words.

3
DIGEST_LENGTH_BYTES =

The length of the digest of the shared secret in bytes.

4
CUSTOMIZATION_STRING =

The customization string used in the RS1024 checksum and in the PBKDF2 salt.

"shamir".bytes
METADATA_LENGTH_WORDS =

The length of the mnemonic in words without the share value.

ID_EXP_LENGTH_WORDS + 2 + CHECKSUM_LENGTH_WORDS
MIN_STRENGTH_BITS =

The minimum allowed entropy of the master secret.

128
MIN_MNEMONIC_LENGTH_WORDS =

The minimum allowed length of the mnemonic in words.

METADATA_LENGTH_WORDS + bits_to_words(MIN_STRENGTH_BITS)
BASE_ITERATION_COUNT =

The minimum number of iterations to use in PBKDF2.

10_000
ROUND_COUNT =

The number of rounds to use in the Feistel cipher.

4
SECRET_INDEX =

The index of the share containing the shared secret.

255
DIGEST_INDEX =

The index of the share containing the digest of the shared secret.

254
EXP_TABLE =

prettier-ignore

[
  1,
  3,
  5,
  15,
  17,
  51,
  85,
  255,
  26,
  46,
  114,
  150,
  161,
  248,
  19,
  53,
  95,
  225,
  56,
  72,
  216,
  115,
  149,
  164,
  247,
  2,
  6,
  10,
  30,
  34,
  102,
  170,
  229,
  52,
  92,
  228,
  55,
  89,
  235,
  38,
  106,
  190,
  217,
  112,
  144,
  171,
  230,
  49,
  83,
  245,
  4,
  12,
  20,
  60,
  68,
  204,
  79,
  209,
  104,
  184,
  211,
  110,
  178,
  205,
  76,
  212,
  103,
  169,
  224,
  59,
  77,
  215,
  98,
  166,
  241,
  8,
  24,
  40,
  120,
  136,
  131,
  158,
  185,
  208,
  107,
  189,
  220,
  127,
  129,
  152,
  179,
  206,
  73,
  219,
  118,
  154,
  181,
  196,
  87,
  249,
  16,
  48,
  80,
  240,
  11,
  29,
  39,
  105,
  187,
  214,
  97,
  163,
  254,
  25,
  43,
  125,
  135,
  146,
  173,
  236,
  47,
  113,
  147,
  174,
  233,
  32,
  96,
  160,
  251,
  22,
  58,
  78,
  210,
  109,
  183,
  194,
  93,
  231,
  50,
  86,
  250,
  21,
  63,
  65,
  195,
  94,
  226,
  61,
  71,
  201,
  64,
  192,
  91,
  237,
  44,
  116,
  156,
  191,
  218,
  117,
  159,
  186,
  213,
  100,
  172,
  239,
  42,
  126,
  130,
  157,
  188,
  223,
  122,
  142,
  137,
  128,
  155,
  182,
  193,
  88,
  232,
  35,
  101,
  175,
  234,
  37,
  111,
  177,
  200,
  67,
  197,
  84,
  252,
  31,
  33,
  99,
  165,
  244,
  7,
  9,
  27,
  45,
  119,
  153,
  176,
  203,
  70,
  202,
  69,
  207,
  74,
  222,
  121,
  139,
  134,
  145,
  168,
  227,
  62,
  66,
  198,
  81,
  243,
  14,
  18,
  54,
  90,
  238,
  41,
  123,
  141,
  140,
  143,
  138,
  133,
  148,
  167,
  242,
  13,
  23,
  57,
  75,
  221,
  124,
  132,
  151,
  162,
  253,
  28,
  36,
  108,
  180,
  199,
  82,
  246
]
LOG_TABLE =

prettier-ignore

[
  0,
  0,
  25,
  1,
  50,
  2,
  26,
  198,
  75,
  199,
  27,
  104,
  51,
  238,
  223,
  3,
  100,
  4,
  224,
  14,
  52,
  141,
  129,
  239,
  76,
  113,
  8,
  200,
  248,
  105,
  28,
  193,
  125,
  194,
  29,
  181,
  249,
  185,
  39,
  106,
  77,
  228,
  166,
  114,
  154,
  201,
  9,
  120,
  101,
  47,
  138,
  5,
  33,
  15,
  225,
  36,
  18,
  240,
  130,
  69,
  53,
  147,
  218,
  142,
  150,
  143,
  219,
  189,
  54,
  208,
  206,
  148,
  19,
  92,
  210,
  241,
  64,
  70,
  131,
  56,
  102,
  221,
  253,
  48,
  191,
  6,
  139,
  98,
  179,
  37,
  226,
  152,
  34,
  136,
  145,
  16,
  126,
  110,
  72,
  195,
  163,
  182,
  30,
  66,
  58,
  107,
  40,
  84,
  250,
  133,
  61,
  186,
  43,
  121,
  10,
  21,
  155,
  159,
  94,
  202,
  78,
  212,
  172,
  229,
  243,
  115,
  167,
  87,
  175,
  88,
  168,
  80,
  244,
  234,
  214,
  116,
  79,
  174,
  233,
  213,
  231,
  230,
  173,
  232,
  44,
  215,
  117,
  122,
  235,
  22,
  11,
  245,
  89,
  203,
  95,
  176,
  156,
  169,
  81,
  160,
  127,
  12,
  246,
  111,
  23,
  196,
  73,
  236,
  216,
  67,
  31,
  45,
  164,
  118,
  123,
  183,
  204,
  187,
  62,
  90,
  251,
  96,
  177,
  134,
  59,
  82,
  161,
  108,
  170,
  85,
  41,
  157,
  151,
  178,
  135,
  144,
  97,
  190,
  220,
  252,
  188,
  149,
  207,
  205,
  55,
  63,
  91,
  209,
  83,
  57,
  132,
  60,
  65,
  162,
  109,
  71,
  20,
  42,
  158,
  93,
  86,
  242,
  211,
  171,
  68,
  17,
  146,
  217,
  35,
  32,
  46,
  137,
  180,
  124,
  184,
  38,
  119,
  153,
  227,
  165,
  103,
  74,
  237,
  222,
  197,
  49,
  254,
  24,
  13,
  99,
  140,
  128,
  192,
  247,
  112,
  7
]

Class Method Summary collapse

Class Method Details

.bits_to_bytes(n) ⇒ Object 



7
8
9
 
# File 'lib/tapyrus/slip39.rb', line 7

def bits_to_bytes(n)
  (n + 7) / 8
end

.bits_to_words(n) ⇒ Object 



11
12
13
 
# File 'lib/tapyrus/slip39.rb', line 11

def bits_to_words(n)
  (n + RADIX_BITS - 1) / RADIX_BITS
end