---
name: "sigsum-key-to-hash"
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-to-hash"
---

# sigsum-key-to-hash(1)

output public-key hash in hex format

## NAME

sigsum-key-to-hash - output public-key hash in hex format

## SYNOPSIS

**sigsum-key** *to-hash* \[*--help*\] \[*-k key-file*\] \[*-o output-file*\]

## DESCRIPTION

Read a public key in OpenSSH format and output its hash in hex format. The public key is read on stdin and output is written on stdout. Override the default behavior using the **-k** and **-o** options.

## OPTIONS

- **--help**

  Show usage message and exit

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

-

  Public key in OpenSSH format

**-o**, **--output**=*output-file*

-

  Hashed public key in hex format

## 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)