Libp11 is a library implementing a small layer on top of PKCS#11 API to make
using PKCS#11 implementations easier.
The official name for PKCS#11 is "RSA Security Inc. PKCS #11 Cryptographic
Token Interface (Cryptoki)".
Libp11 source code include the official header files (version 2.20) and thus
is "derived from the RSA Security Inc. PKCS #11 Cryptographic Token Interface
(Cryptoki)".