Module: CcipherFactory::SymKeySigner::SymKeyAttVerify

Includes:
Common, Compression::CompressionHelper
Defined in:
lib/ccipher_factory/symkey_cipher/symkey_att_verify.rb

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?, #logger

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

#verification_key ⇒ Object

Returns the value of attribute verification_key.



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# File 'lib/ccipher_factory/symkey_cipher/symkey_att_verify.rb', line 11

def verification_key
  @verification_key
end

Instance Method Details

#att_verify_final ⇒ Object 



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# File 'lib/ccipher_factory/symkey_cipher/symkey_att_verify.rb', line 66

def att_verify_final
  res = @ver.verify_final 

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

    disposeOutput(intOutputFile)
  end

  res

end

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

Raises:



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# File 'lib/ccipher_factory/symkey_cipher/symkey_att_verify.rb', line 12

def att_verify_init(opts = {  }, &block)

  @params = opts

  raise SymKeySignerError, "Please provide output for attached verify" if not is_output_given?

  if block
    instance_eval(&block)
    att_verify_final
  else
    self
  end

end

#att_verify_update(val) ⇒ Object 



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# File 'lib/ccipher_factory/symkey_cipher/symkey_att_verify.rb', line 27

def att_verify_update(val)

  if @ver.nil?
    intOutputBuf.write(val)
    begin
      Encoding.extract_meta(intOutputBuf) do |meta, bal|

        ts = BinStruct.instance.struct_from_bin(meta)

        vmeta = ts.symkey_signature
        compression = ts.compression

        cts = BinStruct.instance.struct_from_bin(compression)
        if cts.oid == BTag.constant_value(:compression_zlib)
          compression_on
          decompressor.decompress_update_meta(compression)
        end

        @ver = SymKeySigner.verifier

        @ver.verification_key = @verification_key
        @ver.verify_init(@params)
        @ver.verify_update_meta(vmeta)

        att_verify_update(bal) if bal.length > 0

        intOutputBuf.rewind
        intOutputBuf = nil
      end
    rescue Encoding::InsufficientData
    end
  else
    res = decompress_data_if_active(val)
    @ver.verify_update_data(res)
    intOutputFile.write(res)
  end

end