tools and method to encrypt IP - VHDL RTL and IP-Netlist

[Altera_Forum]

I'm searching tools and algorithm encryption IP - VHDL RTL and IP - Netlist ? 

Can you help me?

[Altera_Forum]

This is probably quite a good place to start. 

http://www.opencores.org/browse.cgi/filter/category_crypto

[Altera_Forum]

see the following solution and the links at the bottom 

 http://www.altera.com/support/kdb/solutions/rd10172006_472.html

[Altera_Forum]

Altera do offer a DOS based encryption package for VHDL/Verilog which effectively creates a 'black box' design tied to a Quartus license. The software is called Ampcrypt and Amplic and you have to contact David Shih at Altera to obtain a copy.