Tribblix: manual page: asn1_der

asn1_der_decoding2(3) libtasn1 asn1_der_decoding2(3)

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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