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asn1_der_decoding2

Section: libtasn1 (3)
Updated: 4.8
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NAME

asn1_der_decoding2 - API function

SYNOPSIS

#include <libtasn1.h>

int asn1_der_decoding2(asn1_node * element, const void * ider, int * max_ider_len, unsigned int flags, char * errorDescription);

ARGUMENTS

asn1_node * element: pointer to an ASN1 structure.
const void * ider: vector that contains the DER encoding.
int * max_ider_len: pointer to an integer giving the information about the maximal number of bytes occupied by * ider . The real size of the DER encoding is returned through this pointer.
unsigned int flags: flags controlling the behaviour of the function.
char * errorDescription: null-terminated string contains details when an error occurred.

DESCRIPTION

Fill the structure * element with values of a DER encoding string. The structure must just be created with function asn1_create_element().

If ASN1_DECODE_FLAG_ALLOW_PADDING flag is set then the function will ignore padding after the decoded DER data. Upon a successful return the value of * max_ider_len will be set to the number of bytes decoded.

If ASN1_DECODE_FLAG_STRICT_DER flag is set then the function will not decode any BER-encoded elements.

RETURNS

ASN1_SUCCESS if DER encoding OK, ASN1_ELEMENT_NOT_FOUND if ELEMENT is NULL, and ASN1_TAG_ERROR or ASN1_DER_ERROR if the der encoding doesn't match the structure name (* ELEMENT deleted).

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