6.1-roPassKey

Owned by Anonymous
Sept 28, 2021
1 min read

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This object provides a means for generating keys (hashes) from a password and salt. 

Object Creation: The object is passed an associative array that specifies the generation methods and cipher.

CreateObject("roPassKey", parameters As roAssociativeArray)

The associative array should contain the following parameters:

  • method: The key derivation method. Currently, only "pbkdf2" can be specified.
  • keyfn: The pseudorandom function (PRF). Currently, only "hmac-sha256" can be specified.
  • keylen: The key length
  • iterations: The number of iterations

ifPassKey

GenerateKey(password As Object, salt As Object) As roByteArray

Generates a key using the supplied password and salt. The parameters may be passed as either strings or roByteArray instances. The generated roByteArray instance may contain all possible byte values, including NUL.

GenerateSalt(length As Integer) As roByteArray

Generates a salt of the specified length. This salt can be used when calling the GenerateKey() method. The generated roByteArray instance may contain all possible byte values, including NUL.

 

Example
' Create input test data
salt = CreateObject("roByteArray")
pass = CreateObject("roByteArray")
pass.FromAsciiString("password")
salt.FromAsciiString("salt")
' Create the key generator
pk = CreateObject("roPassKey",  { method: "pbkdf2", keyfn: "hmac-sha256", keylen: 32, iterations: 4096 } )
' key with be a roByteArray
key = pk.GenerateKey(pass, salt)