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19 lines
629 B
Groff
19 lines
629 B
Groff
.TH fmt_asn1dertag 3
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.SH NAME
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fmt_asn1dertag \- encode unsigned integer like ASN.1 DER tag
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.SH SYNTAX
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.B #include <libowfat/fmt.h>
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size_t \fBfmt_asn1dertag\fP(char *\fIdest\fR,unsigned long long \fIsource\fR);
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.SH DESCRIPTION
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fmt_asn1dertag encodes an unsigned integer using the ASN.1 DER for
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encoding tag. This takes one byte for every 7 bits in the number.
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If \fIdest\fR equals FMT_LEN (i.e. is NULL), fmt_asn1dertag returns the
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number of bytes it would have written.
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For convenience, fmt.h defines the integer FMT_ASN1TAG to be big
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enough to contain every possible fmt_asn1dertag output.
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.SH "SEE ALSO"
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scan_asn1dertag(3)
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