Generate a PQC (post-quantum) CSR or certificate online, free — with ML-DSA, SLH-DSA or Falcon. No OpenSSL, no signup, straight from your browser.
Open the PQC generator →A PQC CSR is a Certificate Signing Request (PKCS#10) signed with a post-quantum cryptography algorithm instead of RSA or ECDSA. "PQC" stands for post-quantum cryptography — algorithms designed to resist attacks from a large quantum computer. A PQC certificate is the issued credential that carries a post-quantum public key. PQCert lets you do PQC CSR generation online and PQC certificate generation online in one place.
To generate a PQC CSR online with PQCert:
The whole flow runs online and nothing is stored — no account, no email, no OpenSSL command line.
Need a certificate rather than a request? PQCert also does PQC certificate generation online: produce a self-signed post-quantum certificate for testing or an internal CA, and export it — together with its key — as a PKCS#12 (.p12) bundle. Same post-quantum algorithms, same in-browser workflow.
| Algorithm | Standard | Best for |
|---|---|---|
| ML-DSA (Dilithium) | FIPS 204 | The general-purpose default (ML-DSA-44/65/87). |
| SLH-DSA (SPHINCS+) | FIPS 205 | Hash-based, conservative; larger signatures. |
| Falcon (FN-DSA) | Draft | Very compact signatures. |
Because public CAs don't broadly issue PQC certificates yet, the pragmatic path is a hybrid CSR — a classical RSA/ECDSA request your CA will sign today, plus a matching post-quantum CSR to exercise your PQC pipeline. PQCert generates the hybrid pair online in one click. See post-quantum cryptography for TLS for the why.