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70 lines
2.5 KiB
70 lines
2.5 KiB
6 years ago
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'\" t
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.\" Title: zmq_z85_encode
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.\" Author: [see the "AUTHORS" section]
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.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
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.\" Date: 02/18/2017
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.\" Manual: 0MQ Manual
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.\" Source: 0MQ 4.2.2
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.\" Language: English
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.\"
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.TH "ZMQ_Z85_ENCODE" "3" "02/18/2017" "0MQ 4\&.2\&.2" "0MQ Manual"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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zmq_z85_encode \- encode a binary key as Z85 printable text
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.SH "SYNOPSIS"
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.sp
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\fBchar *zmq_z85_encode (char *dest, const uint8_t *data, size_t size);\fR
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.SH "DESCRIPTION"
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.sp
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The \fIzmq_z85_encode()\fR function shall encode the binary block specified by \fIdata\fR and \fIsize\fR into a string in \fIdest\fR\&. The size of the binary block must be divisible by 4\&. The \fIdest\fR must have sufficient space for size * 1\&.25 plus 1 for a null terminator\&. A 32\-byte CURVE key is encoded as 40 ASCII characters plus a null terminator\&.
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.sp
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The encoding shall follow the ZMQ RFC 32 specification\&.
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.SH "RETURN VALUE"
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.sp
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The \fIzmq_z85_encode()\fR function shall return \fIdest\fR if successful, else it shall return NULL\&.
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.SH "EXAMPLE"
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.PP
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\fBEncoding a CURVE key\fR.
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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#include <sodium\&.h>
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uint8_t public_key [32];
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uint8_t secret_key [32];
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int rc = crypto_box_keypair (public_key, secret_key);
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assert (rc == 0);
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char encoded [41];
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zmq_z85_encode (encoded, public_key, 32);
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puts (encoded);
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.fi
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.if n \{\
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.RE
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.\}
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.sp
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.SH "SEE ALSO"
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.sp
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\fBzmq_z85_decode\fR(3) \fBzmq_curve_keypair\fR(3) \fBzmq_curve_public\fR(3) \fBzmq_curve\fR(7)
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.SH "AUTHORS"
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.sp
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This page was written by the 0MQ community\&. To make a change please read the 0MQ Contribution Policy at \m[blue]\fBhttp://www\&.zeromq\&.org/docs:contributing\fR\m[]\&.
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