Class: Ccrypto::Java::ED25519Engine

Inherits:
Object
  • Object
show all
Includes:
DataConversion, TR::CondUtils, TeLogger::TeLogHelper
Defined in:
lib/ccrypto/java/engines/ed25519_engine.rb

Overview

ED25519KeyBundle

Class Method Summary collapse

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(*args, &block) ⇒ ED25519Engine

Returns a new instance of ED25519Engine.



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# File 'lib/ccrypto/java/engines/ed25519_engine.rb', line 141

def initialize(*args, &block)
  @config = args.first
end

Class Method Details

.supported_params ⇒ Object 



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# File 'lib/ccrypto/java/engines/ed25519_engine.rb', line 137

def self.supported_params
  []
end

.verify(pubKey, val, sign) ⇒ Object 



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# File 'lib/ccrypto/java/engines/ed25519_engine.rb', line 180

def self.verify(pubKey, val, sign)

  ver = java.security.Signature.getInstance("EdDSA", JCEProvider::BCProv.name)

  case pubKey
  when ED25519PublicKey
    uPubKey = pubKey.native_pubKey
  else
    raise KeypairEngineException, "Unsupported public key type '#{pubKey.class}'"
  end
  
  ver.initVerify(uPubKey)

  case val
  when java.io.InputStream
    buf = Java::byte[102400].new
    while((read = val.read(buf, 0 ,buf.length)) != nil)
      ver.update(buf,0, read)
    end
  else
    ver.update(to_java_bytes(val))
  end

  ver.verify(to_java_bytes(sign))

end

Instance Method Details

#generate_keypair(&block) ⇒ Object 



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# File 'lib/ccrypto/java/engines/ed25519_engine.rb', line 145

def generate_keypair(&block)
  
  JCEProvider.instance.add_bc_provider
  kg = java.security.KeyPairGenerator.getInstance("ED25519", JCEProvider::BCProv.name)
  ED25519KeyBundle.new(kg.generateKeyPair)

end

#sign(val, &block) ⇒ Object 



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# File 'lib/ccrypto/java/engines/ed25519_engine.rb', line 153

def sign(val, &block)
  
  sign = java.security.Signature.getInstance("EdDSA", JCEProvider::BCProv.name)

  case @config.keypair
  when ED25519KeyBundle
    privKey = @config.keypair.nativeKeypair.getPrivate
  else
    raise KeypairEngineException,"Unsupported keypair type '#{@config.keypair.class}'"
  end

  sign.initSign(privKey)

  case val
  when java.io.InputStream
    buf = Java::byte[102400].new
    while((read = val.read(buf, 0, buf.length)) != nil)
      sign.update(buf,0,read)
    end
  else
    sign.update(to_java_bytes(val))
  end

  sign.sign

end