/usr/share/rubygems-integration/all/gems/faker-1.6.6/lib/faker/bitcoin.rb is in ruby-faker 1.6.6-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | require 'digest'
require 'securerandom'
module Faker
class Bitcoin < Base
class << self
PROTOCOL_VERSIONS = {
main: 0,
testnet: 111
}
def address
address_for(:main)
end
def testnet_address
address_for(:testnet)
end
protected
def base58(str)
alphabet = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
base = alphabet.size
lv = 0
str.split('').reverse.each_with_index { |v,i| lv += v.unpack('C')[0] * 256**i }
ret = ''
while lv > 0 do
lv, mod = lv.divmod(base)
ret << alphabet[mod]
end
npad = str.match(/^#{0.chr}*/)[0].to_s.size
'1'*npad + ret.reverse
end
def address_for(network)
version = PROTOCOL_VERSIONS.fetch(network)
hash = SecureRandom.hex(20)
packed = version.chr + [hash].pack("H*")
checksum = Digest::SHA2.digest(Digest::SHA2.digest(packed))[0..3]
base58(packed + checksum)
end
end
end
end
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