Module: BSV::Wallet::Serializer::ProveCertificate

Defined in:
lib/bsv/wallet/serializer/prove_certificate.rb

Overview

BRC-103 wire codec for the prove_certificate call (call byte 19).

Args wire layout (matches go-sdk SerializeProveCertificateArgs):

[32 bytes: cert.type]
[33 bytes: cert.subject pubkey]
[32 bytes: cert.serial_number]
[33 bytes: cert.certifier pubkey]
[36 bytes: cert.revocation_outpoint]
[varint-int: cert.signature bytes] (0-length if nil)
[varint: field_count] per field: [varint-int name_bytes][varint-int value_bytes]
[varint: fields_to_reveal_count] per field: [varint-int name_bytes]
[33 bytes: verifier pubkey]
[privileged params]

Result wire layout:

[varint: keyring_count] per entry: [varint-int key_bytes][varint-int base64 bytes]

Constant Summary collapse

CERT_TYPE_SIZE = 
32
SERIAL_SIZE = 
32
PUBKEY_SIZE = 
33

Class Method Summary collapse

Class Method Details

.deserialize_args(bytes) ⇒ Object 



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# File 'lib/bsv/wallet/serializer/prove_certificate.rb', line 75

def deserialize_args(bytes)
  r = Wire::Reader.new(bytes)

  type_raw   = r.read_bytes(CERT_TYPE_SIZE)
  subject    = r.read_bytes(PUBKEY_SIZE).unpack1('H*')
  serial_raw = r.read_bytes(SERIAL_SIZE)
  certifier  = r.read_bytes(PUBKEY_SIZE).unpack1('H*')

  outpoint_data = r.read_outpoint
  revocation_outpoint = "#{outpoint_data[:txid_hex]}.#{outpoint_data[:vout]}"

  sig_bytes = r.read_int_bytes
  signature = sig_bytes.empty? ? nil : sig_bytes.unpack1('H*')

  field_count = r.read_varint
  fields = {}
  field_count.times do
    k = r.read_int_bytes.force_encoding('UTF-8')
    v = r.read_int_bytes.force_encoding('UTF-8')
    fields[k] = v
  end

  fields_to_reveal_count = r.read_varint
  fields_to_reveal = fields_to_reveal_count.times.map do
    r.read_int_bytes.force_encoding('UTF-8')
  end

  verifier = r.read_bytes(PUBKEY_SIZE).unpack1('H*')
  privileged, privileged_reason = Common.read_privileged_params(r)

  {
    certificate: {
      type: Base64.strict_encode64(type_raw),
      subject: subject,
      serial_number: Base64.strict_encode64(serial_raw),
      certifier: certifier,
      revocation_outpoint: revocation_outpoint,
      signature: signature,
      fields: fields
    },
    fields_to_reveal: fields_to_reveal,
    verifier: verifier,
    privileged: privileged,
    privileged_reason: privileged_reason
  }
end

.deserialize_result(bytes) ⇒ Object 



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# File 'lib/bsv/wallet/serializer/prove_certificate.rb', line 133

def deserialize_result(bytes)
  r = Wire::Reader.new(bytes)
  count = r.read_varint
  keyring = {}
  count.times do
    k = r.read_int_bytes.force_encoding('UTF-8')
    keyring[k] = r.read_base64_int
  end
  { keyring_for_verifier: keyring }
end

.serialize_args(args) ⇒ Object 



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# File 'lib/bsv/wallet/serializer/prove_certificate.rb', line 31

def serialize_args(args)
  w = Wire::Writer.new
  cert = args[:certificate] || {}

  type_bytes = Base64.strict_decode64(cert[:type].to_s)
  w.write_bytes(type_bytes.ljust(CERT_TYPE_SIZE, "\x00").byteslice(0, CERT_TYPE_SIZE))
  w.write_bytes([cert[:subject].to_s].pack('H*'))

  serial_bytes = Base64.strict_decode64(cert[:serial_number].to_s)
  w.write_bytes(serial_bytes.ljust(SERIAL_SIZE, "\x00").byteslice(0, SERIAL_SIZE))
  w.write_bytes([cert[:certifier].to_s].pack('H*'))

  outpoint_str = cert[:revocation_outpoint].to_s
  if outpoint_str.empty? || outpoint_str == '.'
    w.write_outpoint(Certificate::NULL_TXID_HEX, 0)
  else
    txid_hex, vout = outpoint_str.split('.', 2)
    w.write_outpoint(txid_hex.to_s, vout.to_i)
  end

  sig = cert[:signature]
  if sig && !sig.to_s.empty?
    w.write_int_bytes([sig.to_s].pack('H*'))
  else
    w.write_int_bytes(''.b)
  end

  fields = cert[:fields] || {}
  w.write_varint(fields.length)
  fields.keys.sort.each do |k|
    w.write_int_bytes(k.b)
    w.write_int_bytes(fields[k].to_s.b)
  end

  fields_to_reveal = args[:fields_to_reveal] || []
  w.write_varint(fields_to_reveal.length)
  fields_to_reveal.each { |f| w.write_int_bytes(f.to_s.b) }

  w.write_bytes([args[:verifier].to_s].pack('H*'))

  Common.write_privileged_params(w, args[:privileged], args[:privileged_reason])
  w.buf
end

.serialize_result(result) ⇒ Object 



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# File 'lib/bsv/wallet/serializer/prove_certificate.rb', line 122

def serialize_result(result)
  w = Wire::Writer.new
  keyring = result[:keyring_for_verifier] || {}
  w.write_varint(keyring.length)
  keyring.keys.sort.each do |k|
    w.write_int_bytes(k.to_s.b)
    w.write_int_from_base64(keyring[k].to_s)
  end
  w.buf
end