[openssl-users] How to make OpenSSL engine usage application specific?

Paul Dale paul.dale at oracle.com
Mon Feb 19 20:30:52 UTC 2018

Try RSA_new_method when allocating the RSA_METHOD.  It takes an engine argument which will be used for related operations.





Dr Paul Dale | Cryptographer | Network Security & Encryption 

Phone +61 7 3031 7217

Oracle Australia


From: Jayalakshmi bhat [mailto:bhat.jayalakshmi at gmail.com] 
Sent: Monday, 19 February 2018 7:16 PM
To: openssl-users at openssl.org
Subject: [openssl-users] How to make OpenSSL engine usage application specific?


Hello All,


We have 2 RSA OpenSSL engines in our product. Both the engines performs same RSA encyrpt/decrypt operations. For easy explaination I am naming engines as


1. RSA smart card  engine 

2. RSA TPM engine 


Engine usage is application specific.There are couple of applications dependent on RSA TPM  engine. And are few applications dependent on RSA smart card engine. 

We wanted to know if there are any APIs provided by OpenSSL to make the engine usage application specific? Is there any way we can make OpenSSL chose specific engine for

specific application.





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