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Security and infrastructure checks from Europe. No ads, no trackers.

RSA key & CSR generator

Guard your private key. Keys are generated in JS here — don’t leak them. Only hand CSRs to CAs you actually use.

RSA key pair (PKCS#8 + SPKI PEM) and optional CSR (SHA-256).

Key
CSR distinguished name (optional)

Leave blank to generate keys only. All fields are optional but CAs usually require at least a common name (CN).

Using keys and CSRs

Submit the CSR to your certificate authority; keep the private key offline or in a secure HSM or secret store. For TLS, the CN or SAN in the issued certificate should match hostnames clients use.