The crypto of IPP is an add-on library that is not contained in IPP main package. Although the crypto is free to use, you have to install it manually. Please go to registration center to download the installation package for IPP crypto. It is normally hided in related download of IPP.
The open source version of the Intel IPP Cryptography library is available at GitHub: : https://github.com/intel/ipp-crypto While both the commercial and open source versions offer similar functionality and performance improvements, each version may better suit certain needs.