asn1_encode_simple_der (3)

#include <libtasn1.h>

int asn1_encode_simple_der(unsigned int etype, const unsigned char * str, unsigned int str_len, unsigned char * tl, unsigned int * tl_len);

unsigned int etype

The type of the string to be encoded (ASN1_ETYPE_)

const unsigned char * str

the string data.

unsigned int str_len

the string length

unsigned char * tl

the encoded tag and length

unsigned int * tl_len

the bytes of the tl field

Creates the DER encoding for various simple ASN.1 types like strings etc. It stores the tag and length in tl , which should have space for at least ASN1_MAX_TL_SIZE bytes. Initially tl_len should contain the size of tl .

The complete DER encoding should consist of the value in tl appended with the provided str .

ASN1_SUCCESS if successful or an error value.

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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:

• http://www.gnu.org/software/libtasn1/manual/