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Man Pages


Manual Reference Pages  -  LIBOWFAT_FMT_ASN1DERLENGTH (3)

NAME

fmt_asn1derlength - encode unsigned integer like ASN.1 DER length

CONTENTS

Syntax
Description

SYNTAX

#include <fmt.h>

size_t fmt_asn1derlength(char *dest,unsigned long long source);

DESCRIPTION

fmt_asn1derlength encodes an unsigned integer using the ASN.1 DER for encoding tag lengths. This can take from 1 byte (0-0x7f) up to sizeof(source)+1 bytes.

If dest equals FMT_LEN (i.e. is NULL), fmt_asn1derlength returns the number of bytes it would have written.

For convenience, fmt.h defines the integer FMT_ASN1LENGTH to be big enough to contain every possible fmt_asn1derlength output.

SEE ALSO

scan_asn1derlength(3)
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