Module: CcipherFactory::AsymKeyCipher::ECCEncrypt

Includes:
Common, Compression::CompressionHelper, TR::CondUtils
Defined in:
lib/ccipher_factory/asymkey_cipher/ecc/ecc_encrypt.rb

Defined Under Namespace

Classes: ECCCipherError

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Compression::CompressionHelper

#compress_data_if_active, #compression_off, #compression_on, #compressor, #decompress_data_if_active, #decompressor, #decompressor_from_encoded, #encode_null_compressor, #is_compression_on?

Methods included from Common

#attach_mode, #cleanup_intOutputBuf, #cleanup_intOutputFile, #detach_mode, #disposeOutput, #intOutputBuf, #intOutputFile, #is_attach_mode?, #is_output_given?, #output, #output_obj, #sanitize_symbol, #write_to_output

Instance Attribute Details

#recipient_key ⇒ Object

Returns the value of attribute recipient_key.



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# File 'lib/ccipher_factory/asymkey_cipher/ecc/ecc_encrypt.rb', line 17

def recipient_key
  @recipient_key
end

#sender_keypair ⇒ Object

Returns the value of attribute sender_keypair.



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# File 'lib/ccipher_factory/asymkey_cipher/ecc/ecc_encrypt.rb', line 17

def sender_keypair
  @sender_keypair
end

Instance Method Details

#encrypt_final ⇒ Object 



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# File 'lib/ccipher_factory/asymkey_cipher/ecc/ecc_encrypt.rb', line 72

def encrypt_final

  cipherConfig = @cipher.encrypt_final 

  intOutputFile.rewind
  while not intOutputFile.eof?
    write_to_output(intOutputFile.read)
  end
  cleanup_intOutputFile

  pkBin = @sender_keypair.public_key.to_bin
  ts = BinStruct.instance.struct(:ecc_cipher)
  ts.sender_public = @sender_keypair.public_key.to_bin
  ts.cipher_config = cipherConfig
  ts.key_config = @sessKey.encoded
  ts.encoded

end

#encrypt_init(opts = { }, &block) ⇒ Object

Raises:



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# File 'lib/ccipher_factory/asymkey_cipher/ecc/ecc_encrypt.rb', line 19

def encrypt_init(opts = { }, &block)

  #@sender = opts[:sender_keypair]
  #recpPub = opts[:recipient_public]
  recpPub = @recipient_key

  raise ECCCipherError, "Receipient public key is required" if is_empty?(recpPub)
  raise ECCCipherError, "Cipher requires output to be set" if not is_output_given?  
  raise ECCCipherError, "Sender Keypair is required" if is_empty?(@sender_keypair)

  #if is_empty?(@sender_keypair)
  #  @sender_keypair = AsymKeyGenerator.generate(:ecc) 
  #end

  #derived = @sender_keypair.dh_compute_key(recpPub)
  #logger.debug "sender : #{@sender_keypair.inspect} / #{@sender_keypair.private?}"
  #logger.debug "recp : #{recpPub.inspect}"
  derived = @sender_keypair.derive_dh_shared_secret(recpPub)

  @sessKey = SymKeyGenerator.derive(:aes, 256) do |ops|
    case ops
    when :password
      derived
    end
  end

  @cipher = SymKeyCipher.encryptor
  @cipher.output(intOutputFile)
  @cipher.key = @sessKey

  if is_compression_on?
    logger.debug "Turning on compression"
    @cipher.compression_on
  else
    logger.debug "Compression not active"
    @cipher.compression_off
  end

  @cipher.encrypt_init 

  if block
    instance_eval(&block)
    encrypt_final
  else
    self
  end

end

#encrypt_update(val) ⇒ Object 



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# File 'lib/ccipher_factory/asymkey_cipher/ecc/ecc_encrypt.rb', line 68

def encrypt_update(val)
  @cipher.encrypt_update(val) 
end

#logger ⇒ Object 



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# File 'lib/ccipher_factory/asymkey_cipher/ecc/ecc_encrypt.rb', line 91

def logger
  if @logger.nil?
    @logger = Tlogger.new
    @logger.tag = :ecc_enc
  end
  @logger
end