JavaCard OS

Hello everyone

I have a problem with RSA on javacard. How to verify that the RSA calculation process is under attack ?
Again RSA ? Does anyone have a better way?

The security of the algorithm is ensured by the javacard os platform. In the applet layer, you can catch the exception of the api

Does not call rsa authentication interface(verify).You can decrypt rsa ciphertext, and then judge the decryption result.

wumindejia wrote:Does not call rsa authentication interface(verify).You can decrypt rsa ciphertext, and then judge the decryption result.

your way is very interesting. But I mean is how to detect attack during the RSA process or after the RSA process.

I guess that his method maybe takes effect. If some attack is running, the final result might not be right. But the new question is how to assure that the decrypting process which isn't being attacked.

In this way, the padding algorithm maybe premeditated. And, in algorithm library, cipher and signature is same.