SC_ASN1_READ_TAG(3)
NAME
sc_asn1_read_tag - Extract a tag from an ASN.1 entry
SYNOPSIS
#include <opensc.h> int sc_asn1_read_tag(const unsigned char **buf, size_t buflen, unsigned int *cla_out, unsigned int *tag_out, size_t *taglen);
DESCRIPTION
This function extracts a tag from an ASN.1 entry at the buffer pointed
to by the pointer in buf. The buffer is buflen bytes long. The tag
class will be stored in cla_out, the tag itself in tag_out, and the
length of the extracted tag in tag_len.
RETURN VALUE
- Returns 1 if successful, or -1 in case of error.