Class: EzCrypto::CipherWrapper

Inherits:
Object
  • Object
show all
Defined in:
lib/ezcrypto.rb

Overview

Abstract Wrapper around OpenSSL’s Cipher object. Extended by Encrypter and Decrypter.

You probably should be using the Key class instead.

Warning! The interface may change.

Direct Known Subclasses

Decrypter, Encrypter

Instance Method Summary collapse

Constructor Details

#initialize(key, target, mode, algorithm) ⇒ CipherWrapper

Returns a new instance of CipherWrapper.



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# File 'lib/ezcrypto.rb', line 431

def initialize(key,target,mode,algorithm)
  @cipher = OpenSSL::Cipher::Cipher.new(algorithm)  
  if mode
    @cipher.encrypt
  else
    @cipher.decrypt
  end
  @cipher.key=key.raw
  @cipher.padding=1
  @target=target
  @finished=false
end

Instance Method Details

#<<(data) ⇒ Object 



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# File 'lib/ezcrypto.rb', line 460

def <<(data)
  update(data)
end

#final ⇒ Object

Finishes up any last bits of data in the cipher and returns the final result.



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# File 'lib/ezcrypto.rb', line 467

def final
  @target<< to_target(@cipher.final)
  @finished=true
  @target
end

#gulp(data) ⇒ Object

Processes the entire data string using update and performs a final on it returning the data.



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# File 'lib/ezcrypto.rb', line 476

def gulp(data)
  update(data)
  final 
#    rescue
#      breakpoint
end

#reset(target = "") ⇒ Object 



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# File 'lib/ezcrypto.rb', line 486

def reset(target="")
  @target=target
  @finished=false
end

#to_target(data) ⇒ Object 



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# File 'lib/ezcrypto.rb', line 445

def to_target(data)
  return data
end

#update(data) ⇒ Object

Process the givend data with the cipher.



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# File 'lib/ezcrypto.rb', line 452

def update(data)
  reset if @finished
  @target<< to_target(@cipher.update(data))
end