Unified Automation Forum

Hi Team,

Currently i was trying to integrate security policies Aes256_Sha256_RsaPss functionality in our platform.
Using ANSIC C based OPC UA SDK for our development.

After integration of security policies Aes128_Sha256_RsaOaep and Aes256_Sha256_RsaPss in our Server platform the Aes128_Sha256_RsaOaep functional behavior was working as expected.

However for Aes256_Sha256_RsaPss while try to connect UaExpert using Aes256_Sha256_RsaPss endpoint with our server, the pop up window on the UaExpert says that "BadApplicationSignatureInvalid" and in the log window "Server Application Signature is Invalid"

Can you please help in finding solution for this issue.

Regards
Suresh

Hi,

we have tested the issue with both algorithms/paddings the RsaPss and RsaOaep both work just fine using AnsiCDemoserver and the UaExpert.

This two "new" SecurityProfiles are supported in AnsiC based SDK since v1.8.0 (end 2017), however you may be using some very old codebase. In any case you should update to the latest v1.9.2 (including modern OpenSSL).