Class: Ccrypto::Java::CrystalKyberKeyBundle

Inherits:
Object
  • Object
show all
Includes:
DataConversion, KeyBundle, TR::CondUtils
Defined in:
lib/ccrypto/java/engines/crystal_kyber_engine.rb

Overview

Crystal-Kyber mainly for encryption via derivation

Instance Method Summary collapse

Methods included from DataConversion

#from_b64, #from_b64_mime, #from_hex, included, #logger, #to_b64, #to_b64_mime, #to_bin, #to_hex, #to_java_bytes, #to_str

Constructor Details

#initialize(kp, params) ⇒ CrystalKyberKeyBundle

Returns a new instance of CrystalKyberKeyBundle.



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# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 157

def initialize(kp, params)
  @nativeKeypair = kp
  @nativeParam = params
end

Instance Method Details

#dec_derive(kem, &block) ⇒ Object Also known as: derive_dec_shared_secret

Raises:

  • (KeypairEngineException) 


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# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 172

def dec_derive(kem, &block)
  raise KeypairEngineException, "Native Keypair not available" if is_empty?(@nativeKeypair)

  kemExt = KyberKEMExtractor.new(@nativeKeypair.getPrivate)
  kemExt.extractSecret(to_java_bytes(kem))
end

#enc_derive(pubKey, &block) ⇒ Object Also known as: derive_enc_shared_secret

Raises:

  • (KeypairEngineException) 


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# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 162

def enc_derive(pubKey, &block)
  raise KeypairEngineException, "Given public key to derive cannot be empty" if is_empty?(pubKey) 
  raise KeypairEngineException, "Given public key need to be a Crystal Kyber public key" if not pubKey.is_a?(CrystalKyberPublicKey)

  rand = java.security.SecureRandom.getInstanceStrong()
  kemGen = KyberKEMGenerator.new(rand)
  CrystalKyberKEM.new(kemGen.generateEncapsulated(pubKey.native))
end

#private_key ⇒ Object 



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# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 187

def private_key
  if @_privKey.nil?
    @_privKey = CrystalKyberPrivateKey.new(@nativeKeypair.getPrivate(), @nativeParam.param)
  end
  @_privKey
end

#public_key ⇒ Object 



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# File 'lib/ccrypto/java/engines/crystal_kyber_engine.rb', line 180

def public_key
  if @_pubKey.nil?
    @_pubKey = CrystalKyberPublicKey.new(@nativeKeypair.getPublic(), @nativeParam.param)
  end
  @_pubKey
end