This is a Free and GPL compatible permissive license, likely derived from the MIT license (https://fedoraproject.org/wiki/Licensing:MIT?rd=Licensing/MIT#Old_Style_.28no_advertising_without_permission.29). It is sometimes misdetected by the licensecheck as "NTP", but that is a different MIT variant license.
A copy of this license was taken from http://hg.openjdk.java.net/jdk/jdk/file/cf09f0b56efd/src/jdk.crypto.cryptoki/share/native/libj2pkcs11/pkcs11.h on 2018-06-28.
/* License to copy and use this software is granted provided that it is * identified as "RSA Security Inc. PKCS #11 Cryptographic Token Interface * (Cryptoki)" in all material mentioning or referencing this software. * License is also granted to make and use derivative works provided that * such works are identified as "derived from the RSA Security Inc. PKCS #11 * Cryptographic Token Interface (Cryptoki)" in all material mentioning or * referencing the derived work. * RSA Security Inc. makes no representations concerning either the * merchantability of this software or the suitability of this software for * any particular purpose. It is provided "as is" without express or implied * warranty of any kind. */