Class: Ciri::Key

Inherits:
Object
  • Object
show all
Defined in:
lib/ciri/key.rb

Overview

Ciri::Key represent private/public key pair, it support several encryption methods used in Ethereum

Examples:

key = Ciri::Key.random
key.ecdsa_signature(data)

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ec_key: nil, raw_public_key: nil, raw_private_key: nil) ⇒ Key

initialized from ec_key or raw keys ec_key is a OpenSSL::PKey::EC object, raw keys is bytes presented keys



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# File 'lib/ciri/key.rb', line 62

def initialize(ec_key: nil, raw_public_key: nil, raw_private_key: nil)
  @ec_key = ec_key
  @raw_public_key = raw_public_key
  @raw_private_key = raw_private_key
end

Class Method Details

.ecdsa_recover(msg, signature) ⇒ Object 



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# File 'lib/ciri/key.rb', line 44

def ecdsa_recover(msg, signature)
  raw_public_key = Crypto.ecdsa_recover(msg, signature, return_raw_key: true)
  Ciri::Key.new(raw_public_key: raw_public_key)
end

.random ⇒ Object 



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# File 'lib/ciri/key.rb', line 49

def random
  ec_key = OpenSSL::PKey::EC.new('secp256k1')
  ec_key.generate_key
  while (raw_priv_key = ec_key.private_key.to_s(2).size) != 32
    warn "generated privkey is not 32 bytes, bytes: #{raw_priv_key.size} privkey: #{Utils.to_hex raw_priv_key} -> regenerate it..."
    ec_key.generate_key
  end
  Ciri::Key.new(ec_key: ec_key)
end

Instance Method Details

#ec_key ⇒ Object 



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# File 'lib/ciri/key.rb', line 96

def ec_key
  @ec_key ||= Ciri::Utils.create_ec_pk(raw_privkey: @raw_private_key, raw_pubkey: @raw_public_key)
end

#ecdsa_signature(data) ⇒ Object 



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# File 'lib/ciri/key.rb', line 73

def ecdsa_signature(data)
  Crypto.ecdsa_signature(secp256k1_key, data)
end

#ecies_decrypt(data, shared_mac_data = '') ⇒ Object 



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# File 'lib/ciri/key.rb', line 81

def ecies_decrypt(data, shared_mac_data = '')
  Crypto.ecies_decrypt(data, ec_key, shared_mac_data)
end

#ecies_encrypt(message, shared_mac_data = '') ⇒ Object 



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# File 'lib/ciri/key.rb', line 77

def ecies_encrypt(message, shared_mac_data = '')
  Crypto.ecies_encrypt(message, ec_key, shared_mac_data)
end

#raw_public_key ⇒ Object

raw public key



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# File 'lib/ciri/key.rb', line 69

def raw_public_key
  @raw_public_key ||= ec_key.public_key.to_bn.to_s(2)
end

#regenerate_ec_key ⇒ Object

regenerate ec_key from raw_public_key and raw_private_key can used to validate the public_key



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# File 'lib/ciri/key.rb', line 91

def regenerate_ec_key
  @ec_key = nil
  ec_key
end

#to_address ⇒ Object 



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# File 'lib/ciri/key.rb', line 85

def to_address
  Types::Address.new(Utils.keccak(public_key)[-20..-1])
end