Sybase questions

Can someone tell me if there are any cryptographic hash functions available within Sybase? I'm loking to implement an HMAC. Also, does anyone know if the Sybase rand() function is derived from UNIX, and if not, how it works? Adam -- "Every year the Republicans campaign like Libertarians, and then go to Wasthington and spend like Democrats." Vote Harry Browne for President. http://www.harrybrowne96.org