Class: Ccrypto::Java::CrystalKyberEngine

Inherits:
Object
  • Object
show all
Defined in:
lib/ccrypto/java/engines/crystal_kyber_engine.rb

Overview

class CrystalKyberKeyBundle

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args, &block) ⇒ CrystalKyberEngine

Returns a new instance of CrystalKyberEngine.

Raises:

  • (KeypairEngineException) 


242
243
244
245
 
# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 242

def initialize(*args, &block)
  @config = args.first
  raise KeypairEngineException, "1st parameter must be a #{Ccrypto::KeypairConfig.class} object" if not @config.is_a?(Ccrypto::KeypairConfig)
end

Class Method Details

.find_config(conf) ⇒ Object 



221
222
223
 
# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 221

def self.find_config(conf)
  supported_configs.select { |k,v| k == conf }.first[1]
end

.get_available_session_keysize ⇒ Object 



225
226
227
 
# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 225

def self.get_available_session_keysize
  [512, 768, 1024].freeze
end

.get_session_keysize_param(keysize, with_aes = false) ⇒ Object 



229
230
231
232
233
234
235
236
237
238
239
240
 
# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 229

def self.get_session_keysize_param(keysize, with_aes = false)
  case keysize.to_i
  when 512, 768, 1024
    if with_aes
      supported_configs["kyber#{keysize.to_i}_aes".to_sym]
    else
      supported_configs["kyber#{keysize.to_i}".to_sym]
    end
  else
    raise KeypairEngineException, "Crystal Kyber only has keysizes of 512,768 and 1024"
  end
end

.supported_configs ⇒ Object 



202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
 
# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 202

def self.supported_configs
  if @supportedConfig.nil?
    @supportedConfig = {}
    {
      kyber512: KyberParameters::kyber512,
      kyber768: KyberParameters::kyber768,
      kyber1024: KyberParameters::kyber1024,
      kyber512_aes: KyberParameters::kyber512_aes,
      kyber768_aes: KyberParameters::kyber768_aes,
      kyber1024_aes: KyberParameters::kyber1024_aes,
    }.each do |k,kp|
      conf = Ccrypto::CrystalKyberConfig.new(k)
      conf.provider_config = { params: kp }
      @supportedConfig[k] = conf
    end
  end 
  @supportedConfig.freeze
end

.supported_params ⇒ Object 



198
199
200
 
# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 198

def self.supported_params
  supported_configs.keys
end

Instance Method Details

#generate_keypair(&block) ⇒ Object 



247
248
249
250
251
252
253
254
255
 
# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 247

def generate_keypair(&block)

  rand = java.security.SecureRandom.getInstanceStrong
  kpg = org.bouncycastle.pqc.crypto.crystals.kyber.KyberKeyPairGenerator.new
  kpg.init(KyberKeyGenerationParameters.new(rand, @config.provider_config[:params]))

  CrystalKyberKeyBundle.new(kpg.generateKeyPair(), @config)

end