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Self-signed SSL Certificate

Self-signed SSL Certificate, processed in your browser with copy and download.

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CERTIFICATE · LOCAL GENERATION

Self-signed SSL Certificate

Generate RSA / ECDSA self-signed certificates, PKCS#8 keys and encrypted PFX locally; download a ZIP. For testing your own environments, without public CA trust. private.key in the ZIP is unencrypted; the password protects only the PFX.

Processed only in page memory; domains, passwords and keys are not uploaded. PFX uses AES-256-CBC / PBKDF2-HMAC-SHA256 (210,000 iterations), with SHA-256 MAC (10,000 iterations). Save the password before leaving; page contents are cleared.

PKCS#12 · X.509 v3 · Up to 120 seconds; cancellable

Processed content stays in this page’s memory and cannot be recovered after clearing or closing.

About this tool

Generate RSA / ECDSA self-signed certificates, PKCS#8 keys and encrypted PFX locally; download a ZIP. For testing your own environments, without public CA trust. private.key in the ZIP is unencrypted; the password protects only the PFX. Passwords, subjects, keys and results are not uploaded; metrics contain only status, timing, counts and copy/download actions.

How to use

  1. Enter the domain/IP, algorithms, subject, UTC dates, PFX alias and password.
  2. Generate in a browser Worker; cancellable, up to 120 seconds.
  3. Review and download ZIP, certificate, key or encrypted PFX. Editing, clearing and leaving remove results.

Frequently asked questions

Does the PFX password protect the ZIP or private-key file?

No. Only the PFX is password protected; private.key in the ZIP is unencrypted PKCS#8. Self-signed certificates lack public CA trust. SHA-1 and P-192/P-224 are for legacy compatibility tests. Keep passwords and downloads safe.

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