What is a .P7C file?
P7C is a PKCS#7 certificate bundle, often a chain of certificates.
- Did you know
- PKCS stands for Public-Key Cryptography Standards, a numbered series RSA first published in June 1991 - this format takes its name from standard number seven.
- A P7C is a degenerate PKCS#7 SignedData structure - a “certs-only” bundle with no actual signed content.
- P7C uses the same PKCS#7 syntax as S/MIME, which is why mail tools recognise it as a certificate carrier.
- What Analyser reads
- Inspect security and crypto files: PEM private/public keys (RSA/EC/Ed25519, PKCS#1 vs PKCS#8, encryption), OpenSSH .pub with SHA-256 fingerprint, PuTTY .ppk, PKCS#10 CSR, X.509 CRL, PKCS#7 bundles, OpenVPN/WireGuard configs, Java KeyStores, Apple .mobileconfig/.mobileprovision, Windows .reg (with autorun flagging), and pcap/pcapng captures - warning when a private key or secret is present.
- Depth of analysis
- .P7C is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .P7C file
- Drag a .P7C file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.