WebPKI & Advanced Cryptography

CSR (Certificate Signing Request) Inspector

CSR (Certificate Signing Request) Inspector: pkcs#10 pem or base64 der → subject distinguished name (dn), subject alternative names (sans), public key algorithm & modulus, cryptographic self-signature validity, parsed asn.1 structure. Process locally in your browser.

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What does this tool do?

CSR (Certificate Signing Request) Inspector: pkcs#10 pem or base64 der → subject distinguished name (dn), subject alternative names (sans), public key algorithm & modulus, cryptographic self-signature validity, parsed asn.1 structure. Process locally in your browser. Inputs: PKCS#10 PEM or Base64 DER. Outputs: Subject Distinguished Name (DN), Subject Alternative Names (SANs), Public Key Algorithm & Modulus, Cryptographic Self-Signature Validity, Parsed ASN.1 Structure.

How to use it?

Provide the listed input and choose Inspect CSR. Review the result, then copy or download where available. Clear removes inputs and results.

Browser-local processing. No uploads, content logging, persistence or remote resource loading. Generated markup is inert text; files are treated as untrusted data.

100% in-browser cryptographic processing using Web Crypto API. Private keys, passphrases, AES-GCM payloads, and certificate requests are calculated client-side and never sent to any server.