XTS2 and XTS3 (formerly known as XEX2 and XEX3) implement the NIST standard AES cipher in the XEX/XTS mode for encryption and decryption. The XTS3 family of cores covers a wide range of area / throughput combinations using both 256 and 128-bit keys, allowing the designer to choose the smallest core that satisfies the desired clock/throughput requirements. XTS2 is similar to XTS3, but supports only 128-bit keys. Each core contains the base AES core AES1 and is available for immediate licensing.
The design is fully synchronous and available in both source and netlist form.