Class: Authlogic::CryptoProviders::Sha1::V2

Inherits:
Object
  • Object
show all
Defined in:
lib/authlogic/crypto_providers/sha1/v2.rb

Overview

A poor choice. There are known attacks against this algorithm.

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.join_tokenObject


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# File 'lib/authlogic/crypto_providers/sha1/v2.rb', line 11

def join_token
  @join_token ||= "--"
end

.stretchesObject

The number of times to loop through the encryption.


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# File 'lib/authlogic/crypto_providers/sha1/v2.rb', line 17

def stretches
  @stretches ||= 10
end

Class Method Details

.encrypt(*tokens) ⇒ Object

Turns your raw password into a Sha1 hash.


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# File 'lib/authlogic/crypto_providers/sha1/v2.rb', line 23

def encrypt(*tokens)
  tokens = tokens.flatten
  digest = tokens.shift
  stretches.times do
    digest = Digest::SHA1.digest([digest, *tokens].join(join_token))
  end
  digest.unpack1("H*")
end

.matches?(crypted, *tokens) ⇒ Boolean

Does the crypted password match the tokens? Uses the same tokens that were used to encrypt.

Returns:

  • (Boolean)

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# File 'lib/authlogic/crypto_providers/sha1/v2.rb', line 34

def matches?(crypted, *tokens)
  encrypt(*tokens) == crypted
end