asn1_length_der(3)

asn1_length_der3

Api function

Usage

#include <libtasn1.h>

void asn1_length_der(unsigned long int len, unsigned char * der, int * der_len);

Arguments

unsigned long int len

value to convert.

unsigned char * der

buffer to hold the returned encoding (may be NULL).

int * der_len

number of meaningful bytes of ANS (der[0]..der[der_len-1]).

Overview

Creates the DER encoding of the provided length value. The der buffer must have enough room for the output. The maximum length this function will encode is ASN1_MAX_LENGTH_SIZE.

To know the size of the DER encoding use a NULL value for der .

Releases

11 releases since Debian 4.0 (Etch); the text changed 9 times.

  1. 4.0
  2. 5.0
  3. 6.0
  4. 7
  5. 8
  6. 9–10
  7. 11
  8. 12
  9. 13
  10. Arch

From libtasn1 4.21.0-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.