Class: OpenSSLAEAD

Inherits:
AbstractSymmetricCrypt show all
Defined in:
lib/ruby-common/v5/OpenSSLAEAD.rb

Constant Summary collapse

METHOD = 
0x0201

Instance Method Summary collapse

Methods inherited from AbstractSymmetricCrypt

#parse

Constructor Details

#initialize(tag: 16, crypt_method: "AES-256-GCM") ⇒ OpenSSLAEAD

Returns a new instance of OpenSSLAEAD.



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# File 'lib/ruby-common/v5/OpenSSLAEAD.rb', line 6

def initialize(tag: 16, crypt_method: "AES-256-GCM")
  @tag= tag
  @crypt_method = crypt_method
  @crypt_iv = CryptMethodConstans::CRYPT_METHODS[crypt_method]
end

Instance Method Details

#decrypt_with_key(payload, key) ⇒ Object

Raises:



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# File 'lib/ruby-common/v5/OpenSSLAEAD.rb', line 12

def decrypt_with_key(payload, key)
  lengths = {"iv" => @crypt_iv, "tag" => @tag}
  result = parse(payload, lengths)

  raise DecryptError, 'Unrecognized payload' if result.method != METHOD;

  return decode(
    result.data,
    key,
    result.byte_buffer_map['iv'],
    result.byte_buffer_map['tag']
  )
end