The opencryptoki packages contain version 2.11 of the PKCS#11 API, implemented for IBM Cryptocards, such as IBM 4764 and 4765 crypto cards. These packages includes support for the IBM 4758 Cryptographic CoProcessor , the IBM eServer Cryptographic Accelerator , the IBM Crypto Express2 , and the IBM CP Assist for Cryptographic Function . The opencryptoki packages also bring a software token implementation that can be used without any cryptographic hardware. These packages contain the Slot Daemon and general utilities. Security Fix: opencryptoki: timing side-channel in handling of RSA PKCS#1 v1.5 padded ciphertexts For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.