I read the following description from Oracle Solaris website (https://blogs.oracle.com/DanX/entry/how_to_tell_if_sparc) OpenSSL T4 engine Availability The OpenSSL t4 engine is available with Solaris 11 and 11.1. For Solaris 10 08/11 (U10), you need to use the OpenSSL pkcs11 engine. The OpenSSL t4 engine is distributed only with the version of OpenSSL distributed with Solaris (and not third-party or self-compiled versions of OpenSSL). The following announcement is from OpenSSL. Changes between 1.0.1l and 1.0.2 [22 Jan 2015] ... *) Support for SPARC Architecture 2011 crypto extensions, first implemented in SPARC T4. This covers AES, DES, Camellia, SHA1, SHA256/512, MD5, GHASH and modular exponentiation. [Andy Polyakov, David Miller] ... I am confused. I don't know which one is right. I thought the announcement from OpenSSL was right and the description in Oracle website was obsolete. But my test results could not verify my idea. Thanks, Aaron -- View this message in context: http://openssl.6102.n7.nabble.com/Can-OpenSSL-applications-utilities-use-SunSPARC-crypto-accelerators-tp59163p59218.html Sent from the OpenSSL - User mailing list archive at Nabble.com.