class Faker::Bitcoin
Constants
- PROTOCOL_VERSIONS
Public Class Methods
address()
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# File lib/faker/bitcoin.rb, line 13 def address address_for(:main) end
testnet_address()
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# File lib/faker/bitcoin.rb, line 17 def testnet_address address_for(:testnet) end
Protected Class Methods
address_for(network)
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# File lib/faker/bitcoin.rb, line 40 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
base58(str)
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# File lib/faker/bitcoin.rb, line 23 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