---
name: "gnutls_hash_init"
section: "3"
platform: "linux"
package: "gnutls"
version: "3.8.13-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_hash_init"
---

# gnutls\_hash\_init(3)

API function

## NAME

gnutls\_hash\_init - API function

## SYNOPSIS

**#include \<gnutls/crypto.h\>**

**int gnutls\_hash\_init(gnutls\_hash\_hd\_t \*** *dig***, gnutls\_digest\_algorithm\_t** *algorithm***);**

## ARGUMENTS

- gnutls\_hash\_hd\_t \* dig

  is a **gnutls\_hash\_hd\_t** type

- gnutls\_digest\_algorithm\_t algorithm

  the hash algorithm to use

## DESCRIPTION

This function will initialize an context that can be used to produce a Message Digest of data.  This will effectively use the current crypto backend in use by gnutls or the cryptographic accelerator in use.

## RETURNS

Zero or a negative error code on error.

## SINCE

2\.10.0

## REPORTING BUGS

Report bugs to \<bugs@gnutls.org\>.\
 Home page: https://www.gnutls.org

## COPYRIGHT

Copyright © 2001-2023 Free Software Foundation, Inc., and others.\
 Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.

## SEE ALSO

The full documentation for **gnutls** is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit

- https://www.gnutls.org/manual/