Generate Secret Key from Password

The GenEncodedSecretKey method provides a way to produce a secret key from an arbitrarily sized password string. The secret key produced will be equal in bit length to the KeyLength. A given string passed to GenEncodedSecretKey will always produce the same key. (In other words, this is really a hash function and not a random key generator.)

Download Chilkat Ruby Library

require 'chilkat'

crypt = Chilkat::CkCrypt2.new()

success = crypt.UnlockComponent("Anything for 30-day Trial")
if (success != true)
    print "Crypt component unlock failed" + "\n"
    exit
end

crypt.put_CryptAlgorithm("aes")
crypt.put_KeyLength(128)

#  Transform an arbitrary-length password to a secret key
#  equal in bit-length to the KeyLength:

hexKey = crypt.genEncodedSecretKey("my_password","hex")

#  Set the secret key:
crypt.SetEncodedKey(hexKey,"hex")

#  The hexKey is 16 bytes in length:
print hexKey + "\n"