Class: Veil::Cipher::V2

Inherits:
Object
  • Object
show all
Defined in:
lib/veil/cipher/v2.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ V2

Returns a new instance of V2.



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# File 'lib/veil/cipher/v2.rb', line 9

def initialize(opts = {})
  @cipher = OpenSSL::Cipher.new("aes-256-cbc")
  @key    = opts[:key] ? Base64.strict_decode64(opts[:key]) : cipher.random_key
  @iv     = opts[:iv] ? Base64.strict_decode64(opts[:iv]) : cipher.random_iv
end

Instance Attribute Details

#cipher ⇒ Object (readonly)

Returns the value of attribute cipher.



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# File 'lib/veil/cipher/v2.rb', line 7

def cipher
  @cipher
end

#iv ⇒ Object (readonly)

Returns the value of attribute iv.



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# File 'lib/veil/cipher/v2.rb', line 7

def iv
  @iv
end

#key ⇒ Object (readonly)

Returns the value of attribute key.



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# File 'lib/veil/cipher/v2.rb', line 7

def key
  @key
end

Instance Method Details

#decrypt(ciphertext) ⇒ Object 



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# File 'lib/veil/cipher/v2.rb', line 23

def decrypt(ciphertext)
  c = cipher
  c.decrypt
  c.key = key
  c.iv = iv
  JSON.parse(c.update(Base64.strict_decode64(ciphertext)) + c.final, symbolize_names: true)
end

#encrypt(plaintext) ⇒ Object 



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# File 'lib/veil/cipher/v2.rb', line 15

def encrypt(plaintext)
  c = cipher
  c.encrypt
  c.key = key
  c.iv = iv
  Base64.strict_encode64(c.update(plaintext) + c.final)
end

#to_hash ⇒ Object Also known as: to_h 



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# File 'lib/veil/cipher/v2.rb', line 31

def to_hash
  {
    type: self.class.name,
    key: Base64.strict_encode64(key),
    iv: Base64.strict_encode64(iv)
  }
end