Method: OnePassword::Encryption.decrypt_using_pbkdf2

Defined in:
lib/one_password/encryption.rb

.decrypt_using_pbkdf2(data, password, iterations) ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
# File 'lib/one_password/encryption.rb', line 12

def self.decrypt_using_pbkdf2(data, password, iterations)
  encrypted = Base64.decode64(data)
  salt      = ZERO_IV
  if salted?(encrypted)
    salt      = encrypted[8, 8]
    encrypted = encrypted[16..-1]
  end

  derived_key = OpenSSL::PKCS5.pbkdf2_hmac_sha1(password, salt, iterations, 32)

  key = derived_key.slice(0..15)
  iv  = derived_key.slice(16..-1)

  decrypt_using_key_and_ivec(encrypted, key, iv)
end