---
name: "asn1_decode_simple_der"
section: "3"
platform: "linux"
package: "libtasn1"
version: "4.21.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/asn1_decode_simple_der"
---

# asn1\_decode\_simple\_der(3)

API function

## NAME

asn1\_decode\_simple\_der - API function

## SYNOPSIS

**#include \<libtasn1.h\>**

**int asn1\_decode\_simple\_der(unsigned int** *etype***, const unsigned char \*** *der***, unsigned int** *\_der\_len***, const unsigned char \*\*** *str***, unsigned int \*** *str\_len***);**

## ARGUMENTS

- unsigned int etype

  The type of the string to be encoded (ASN1\_ETYPE\_)

- const unsigned char \* der

  the encoded string

- unsigned int \_der\_len

  the bytes of the encoded string

- const unsigned char \*\* str

  a pointer to the data

- unsigned int \* str\_len

  the length of the data

## DESCRIPTION

Decodes a simple DER encoded type (e.g. a string, which is not constructed). The output is a pointer inside the  *der* .

## RETURNS

**ASN1\_SUCCESS** if successful or an error value.

## COPYRIGHT

Copyright © 2006-2025 Free Software Foundation, Inc..\
 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 **libtasn1** is maintained as a Texinfo manual.  If the **info** and **libtasn1** programs are properly installed at your site, the command

-

  **info libtasn1**

should give you access to the complete manual. As an alternative you may obtain the manual from:

-

  **https://www.gnu.org/software/libtasn1/manual/**