Verify the Signature:

1. Verify the signature of decryptedsignedmessage.txt using the sender’s certificate

C:\OpenSSL-Win64\bin>openssl cms -engine pkcs11 -verify -in C:\localCA\decryptedsignedmessage.txt -CAfile C:\localCA\newcerts\ca.cer - out originalmessage.txt C:\localCA\newcerts\sender\SenderSignCertificate.cer

Figure 56: Openssl verify command output

2. Open the originalmessage.txt and verify the message which you have typed in the

message.txt

This completes the Integration of OpenSSL with Utimaco HSM.