---
name: "sigsum-key-verify"
section: "1"
platform: "linux"
package: "sigsum-go"
version: "0.11.2-1+b3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/sigsum-key-verify"
---

# sigsum-key-verify(1)

verify Ed25519 signature

## NAME

sigsum-key-verify - verify Ed25519 signature

## SYNOPSIS

**sigsum-key** *verify* \[*--help*\] \[*-k key-file*\] \[*-n namespace*\] \[*-s sig-file*\] *\< msg*

## DESCRIPTION

Verify an Ed25519 signature with a given namespace.  The namespaces that are used in the Sigsum system are 'sigsum.org/v1/tree-leaf' (signed checksums) and 'sigsum.org/v1/submit-token' (rate limiting). The default behavior is to not use any namespace.

The message to verify is provided on stdin.

## OPTIONS

- **--help**

  Show usage message and exit

**-k**, **--key**=*key-file*

-

  Public key in OpenSSH format (required)

**-n**, **--namespace**=*namespace*

-

  Signature namespace to ensure domain separation

**-s**, **--signature**=*sig-file*

-

  Signature in hex format (required)

## RETURN CODES

A non-zero return code is used to indicate failure.

## CONTACT

Send an email to the sigsum-general mailing list at **sigsum-general@lists.sigsum.org.** You can also reach out in room **#sigsum** at **OFTC.net** and **matrix.org.**

## REPORTING BUGS

Use the issue tracker located at **https://git.glasklar.is/sigsum/core/sigsum-go/-/issues.** To file issues without a GitLab account, send an email to **sigsum-core-sigsum-go-issues@incoming.glasklar.is** and wait for a maintainer to make the issue public.

## SEE ALSO

[**sigsum-key-from-hex**(1)](/sigsum-key-from-hex/1.md) [**sigsum-key-from-vkey**(1)](/sigsum-key-from-vkey/1.md) [**sigsum-key-generate**(1)](/sigsum-key-generate/1.md) [**sigsum-key-sign**(1)](/sigsum-key-sign/1.md) [**sigsum-key-to-hash**(1)](/sigsum-key-to-hash/1.md) [**sigsum-key-to-hex**(1)](/sigsum-key-to-hex/1.md) [**sigsum-key-to-vkey**(1)](/sigsum-key-to-vkey/1.md) [**sigsum-key-verify**(1)](/sigsum-key-verify/1.md) [**sigsum-monitor**(1)](/sigsum-monitor/1.md) [**sigsum-submit**(1)](/sigsum-submit/1.md) [**sigsum-token**(1)](/sigsum-token/1.md) **sigsum-tools**(5) [**sigsum-verify**(1)](/sigsum-verify/1.md)