Test your RSA Keys

Paste your public key or certificate here to get started.

Infineon/Coppersmith bug results will be emailed to you immediately. Batch GCD results will be sent next Monday.

Need it faster? No problem. Request a premium account.

How it works

We will run your key against three RSA key healthcheck algorithms: division by small primes and batch-GCD against the Cryptosense key database and check against the Infineon key generator bug (Return of the Coppersmith attack). For more info check the FAQ.

More Tools

Cryptosense provides state-of-the-art analysis software to help some of the world's largest organizations eliminate the vulnerabilities caused by crypto misuse in their applications and infrastructure. Try our other tools:

Discovery   Scan your SSH, HTTPS and mail servers for config errors and attacks.

Analyzer   Detect and correct flaws caused by crypto misuse in your applications.


Based in Paris, France, Cryptosense provides its solutions to the financial services industry, government agencies and software and hardware producers.

For more information, contact sales@cryptosense.com or call us on +1 646-893-7657