Class: Authmac::HmacChecker

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

Instance Method Summary collapse

Constructor Details

#initialize(secret, parameter_separator = '|', digest_function = 'sha1') ⇒ HmacChecker

Returns a new instance of HmacChecker.



5
6
7
8
9
10
 
# File 'lib/authmac/hmac_checker.rb', line 5

def initialize(secret, parameter_separator = '|', digest_function = 'sha1')
  @secret = secret
  @digest = digest_function
  @separator = parameter_separator
  fail Authmac::SecretError, 'secret too short, see rfc2104' unless @secret.bytes.size >= digester.digest_length * 2
end

Instance Method Details

#sign(hash) ⇒ Object 



16
17
18
 
# File 'lib/authmac/hmac_checker.rb', line 16

def sign(hash)
  OpenSSL::HMAC.hexdigest(digester, @secret, message_string(hash))
end

#validate(hash, given_hmac) ⇒ Object 



12
13
14
 
# File 'lib/authmac/hmac_checker.rb', line 12

def validate(hash, given_hmac)
  sign(hash) == given_hmac
end

#with_signature(hash, hmac_key = :hmac) ⇒ Object 



20
21
22
 
# File 'lib/authmac/hmac_checker.rb', line 20

def with_signature(hash, hmac_key = :hmac)
  hash.merge({hmac_key => sign(hash)})
end