Class: Krypter

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

Constant Summary collapse

InvalidSignature = 
Class.new(StandardError)
InvalidMessage = 
Class.new(StandardError)

Instance Method Summary collapse

Constructor Details

#initialize(secret, cipher: "aes-256-cbc", digest: "SHA256", separator: "--") ⇒ Krypter

Returns a new instance of Krypter.



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# File 'lib/krypter.rb', line 9

def initialize(
  secret,
  cipher: "aes-256-cbc",
  digest: "SHA256",
  separator: "--"
)
  @cipher = cipher
  @digest = digest
  @separator = separator
  @encrypt_secret = hmac(secret, "encryption key")
  @sign_secret = hmac(secret, "signin key")
end

Instance Method Details

#decrypt(message) ⇒ Object 



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# File 'lib/krypter.rb', line 26

def decrypt(message)
  (ciphertext = verify(message)) && _decrypt(ciphertext)
end

#encrypt(message) ⇒ Object 



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# File 'lib/krypter.rb', line 22

def encrypt(message)
  sign(_encrypt(message))
end