---
name: "gnutls_decode_gost_rs_value"
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_decode_gost_rs_value"
---

# gnutls\_decode\_gost\_rs\_value(3)

API function

## NAME

gnutls\_decode\_gost\_rs\_value - API function

## SYNOPSIS

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

**int gnutls\_decode\_gost\_rs\_value(const gnutls\_datum\_t \*** *sig\_value***, gnutls\_datum\_t \*** *r***, gnutls\_datum\_t \*** *s***);**

## ARGUMENTS

- const gnutls\_datum\_t \* sig\_value

  will holds a GOST signature according to RFC 4491 section 2.2.2

- gnutls\_datum\_t \* r

  will contain the r value

- gnutls\_datum\_t \* s

  will contain the s value

## DESCRIPTION

This function will decode the provided  *sig\_value* , into  *r* and  *s* elements. See RFC 4491 section 2.2.2 for the format of signature value.

The output values may be padded with a zero byte to prevent them from being interpreted as negative values. The value should be deallocated using **gnutls\_free()**.

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, otherwise an error code is returned.

## SINCE

3\.6.0

## 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/