asn1_octet_der (3) - Linux Manuals

asn1_octet_der: API function


asn1_octet_der - API function


#include <libtasn1.h>

void asn1_octet_der(const unsigned char * str, int str_len, unsigned char * der, int * der_len);


const unsigned char * str
the input data.
int str_len
STR length (str[0]..str[*str_len-1]).
unsigned char * der
encoded string returned.
int * der_len
number of meaningful bytes of DER (der[0]..der[der_len-1]).


Creates a length-value DER encoding for the input data. The DER encoding of the input data will be placed in the der variable.

Note that the OCTET STRING tag is not included in the output.

This function does not return any value because it is expected that der_len will contain enough bytes to store the string plus the DER encoding. The DER encoding size can be obtained using asn1_length_der().


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