Class: Authentication::Logic::CryptoProviders::Sha512::V2

Inherits:
Object
  • Object
show all
Defined in:
lib/auth/logic/crypto_providers/sha512/v2.rb

Overview

SHA-512 does not have any practical known attacks against it. However, there are better choices. We recommend transitioning to a more secure, adaptive hashing algorithm, like scrypt.

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.join_token ⇒ Object

Returns the value of attribute join_token.



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# File 'lib/auth/logic/crypto_providers/sha512/v2.rb', line 14

def join_token
  @join_token
end

.stretches ⇒ Object

The number of times to loop through the encryption.



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# File 'lib/auth/logic/crypto_providers/sha512/v2.rb', line 17

def stretches
  @stretches ||= 20
end

Class Method Details

.encrypt(*tokens) ⇒ Object

Turns your raw password into a Sha512 hash.



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# File 'lib/auth/logic/crypto_providers/sha512/v2.rb', line 23

def encrypt(*tokens)
  digest = tokens.flatten.join(join_token)
  stretches.times do
    digest = Digest::SHA512.digest(digest)
  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/auth/logic/crypto_providers/sha512/v2.rb', line 33

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