Top Level Namespace

Constant Summary collapse

SALT_LENGTH = 
30
ALPHA = 
('A'..'Z').to_a + ('a'..'z').to_a + ('0'..'9').to_a

Instance Method Summary collapse

Instance Method Details

#generate_salt ⇒ Object 



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# File 'lib/salty.rb', line 10

def generate_salt
  (1..SALT_LENGTH).map{ALPHA.sample}.join
end

#hash_fn(str) ⇒ Object 



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# File 'lib/salty.rb', line 6

def hash_fn(str)
  Digest::SHA1.hexdigest str
end

#salted_hash(str, salt) ⇒ Object 



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# File 'lib/salty.rb', line 14

def salted_hash(str,salt)
  res = str
  100.times do
    res = hash_fn(res+salt)
  end
  res
end

#salty(str) ⇒ Object 



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

def salty(str)
  salt = generate_salt

  res = salted_hash(str,salt)

  n = str.length
  res[0...n] + salt + res[n..-1]
end

#salty_eq(unhashed, hashed) ⇒ Object 



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# File 'lib/salty.rb', line 31

def salty_eq(unhashed,hashed)
  n = unhashed.length
  salt = hashed[n,SALT_LENGTH]
  myhashed = hashed[0...n] + hashed[n+SALT_LENGTH..-1]

  myhashed == salted_hash(unhashed,salt)
end