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.\"Generated by db2man.xsl. Don't modify this, modify the source.
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.TH "SC_ASN1_READ_TAG" 3 "" "" "OpenSC API Reference"
.SH NAME
sc_asn1_read_tag \- Extract a tag from an ASN.1 entry
.SH "SYNOPSIS"
.PP
.nf
#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);
.fi
.SH "DESCRIPTION"
.PP
This function extracts a tag from an ASN\&.1 entry at the buffer pointed to by the pointer in \fIbuf\fR\&. The buffer is \fIbuflen\fR bytes long\&. The tag class will be stored in \fIcla_out\fR, the tag itself in\fItag_out\fR, and the length of the extracted tag in\fItag_len\fR\&.
.SH "RETURN VALUE"
.PP
Returns 1 if successful, or \-1 in case of error\&.
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