---
name: "tor-print-ed-signing-cert"
section: "1"
platform: "linux"
package: "tor"
version: "0.4.9.14-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/tor-print-ed-signing-cert"
---

# tor-print-ed-signing-cert(1)

print expiration date of ed25519 signing certificate

## NAME

tor-print-ed-signing-cert - print expiration date of ed25519 signing certificate

## SYNOPSIS

**tor-print-ed-signing-cert** *\<path to ed25519\_signing\_cert file\>*

## DESCRIPTION

**tor-print-ed-signing-cert** is utility program for Tor relay operators to check expiration date of ed25519 signing certificate.

Expiration date is printed in three formats:

• Human-readable timestamp, localized to current timezone.

• RFC 1123 timestamp (at GMT timezone).

• Unix time value.

## SEE ALSO

[**tor**(1)](/tor/1.md)

https://spec.torproject.org/cert-spec

## AUTHOR

**Tor Project, Inc.**

Author.