Keys, Certificates & Tokens
Key from Certificate for Public Processor
Process key or token data with Public Key from Certificate and explicit format settings. Enter the key material, choose the required format, then review the result.
This tool runs open-source code from CyberChef by GCHQ (Apache License 2.0). See open-source credits.
Key from Certificate for Public Processor performs PEM certificate public-key extraction for the supplied key or certificate data. It reads each matching certificate and exports its public key as PEM.
It reads each matching certificate and exports its public key as PEM. This result runs in the browser for this catalog category. Processing runs in the browser.
Conversion and parsing preserve or display key data; they do not create trust, authorization, or certificate validation.
Instructions
- Provide text or data for this tool.
- Retain both certificate boundary lines when copying the fixture. This applies to Key from Certificate for Public Processor.
- Use the certificate parser when you need issuer, validity, or extension fields instead. This applies to Key from Certificate for Public Processor.
Example
Input: Paste a complete disposable BEGIN CERTIFICATE through END CERTIFICATE PEM block.
Settings: Key from Certificate for Public Processor: Input must contain PEM certificate markers; there is no DER format selector. Multiple certificate blocks can produce multiple public PEM keys.
Result: It reads each matching certificate and exports its public key as PEM.
Limits
- Key from Certificate for Public Processor: Missing footer markers and unsupported public-key types can produce errors.
- Key from Certificate for Public Processor: Extracting a key does not validate the certificate chain or hostname.