#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <pwd.h>
#include <stdio.h>

#include "rnd.h"
#include "die.h"
#include "str.h"
#include "crypto.h"
#include "curve.h"
#include "ioops.h"
#include "config.h"
#include "keypair.h"

void generate_keypair(void)
{
	struct passwd *pw = getpwuid(getuid());
	unsigned char publickey[crypto_box_pub_key_size];
	unsigned char secretkey[crypto_box_sec_key_size];
	char file[128];

	xmemset(publickey, 0, sizeof(publickey));
	xmemset(secretkey, 0, sizeof(secretkey));

	curve25519_selftest();

	printf("Reading from %s (this may take a while) ...\n",
	       HIG_ENTROPY_SOURCE);

	gen_key_bytes(secretkey, sizeof(secretkey));
	crypto_scalarmult_curve25519_base(publickey, secretkey);

	slprintf(file, sizeof(file), "%s/%s", pw->pw_dir, FILE_PUBKEY);
	write_blob_or_die(file, publickey, sizeof(publickey));
	printf("Public key written to %s!\n", file);

	slprintf(file, sizeof(file), "%s/%s", pw->pw_dir, FILE_PRIVKEY);
	write_blob_or_die(file, secretkey, sizeof(secretkey));
	printf("Secret key written to %s!\n", file);

	xmemset(publickey, 0, sizeof(publickey));
	xmemset(secretkey, 0, sizeof(secretkey));
}

void verify_keypair(void)
{
	int result;
	struct passwd *pw = getpwuid(getuid());
	unsigned char publickey[crypto_box_pub_key_size];
	unsigned char publicres[crypto_box_pub_key_size];
	unsigned char secretkey[crypto_box_sec_key_size];
	char file[128];

	curve25519_selftest();

	xmemset(publickey, 0, sizeof(publickey));
	xmemset(publicres, 0, sizeof(publicres));
	xmemset(secretkey, 0, sizeof(secretkey));

	slprintf(file, sizeof(file), "%s/%s", pw->pw_dir, FILE_PUBKEY);
	read_blob_or_die(file, publickey, sizeof(publickey));

	slprintf(file, sizeof(file), "%s/%s", pw->pw_dir, FILE_PRIVKEY);
	read_blob_or_die(file, secretkey, sizeof(secretkey));

	crypto_scalarmult_curve25519_base(publicres, secretkey);
	result = crypto_verify_32(publicres, publickey);

	xmemset(publickey, 0, sizeof(publickey));
	xmemset(publicres, 0, sizeof(publicres));
	xmemset(secretkey, 0, sizeof(secretkey));

	if (result)
		panic("Keypair is corrupt! You need to regenerate!\n");
}
7c4ab7b2a7e34a13e468311db4cd64'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/'>
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<div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='packet-loop-back'/><input type='hidden' name='id' value='57b9f569447c4ab7b2a7e34a13e468311db4cd64'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;</td><td class='right'>2016-09-13 03:35:20 +0900</td></tr>
<tr><th>committer</th><td>Eric Anholt &lt;eric@anholt.net&gt;</td><td class='right'>2016-10-06 11:53:35 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=packet-loop-back&amp;id=57b9f569447c4ab7b2a7e34a13e468311db4cd64'>57b9f569447c4ab7b2a7e34a13e468311db4cd64</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=57b9f569447c4ab7b2a7e34a13e468311db4cd64'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=packet-loop-back&amp;id=57b9f569447c4ab7b2a7e34a13e468311db4cd64'>e6719af0a19a7958327ec1f25df79c8bfee87116</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=packet-loop-back&amp;id=c2cbc38b9715bd8318062e600668fc30e5a3fbfa'>c2cbc38b9715bd8318062e600668fc30e5a3fbfa</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?h=packet-loop-back&amp;id=57b9f569447c4ab7b2a7e34a13e468311db4cd64&amp;id2=c2cbc38b9715bd8318062e600668fc30e5a3fbfa'>diff</a>)</td></tr></table>
<div class='commit-subject'>drm/vc4: cleanup with list_first_entry_or_null()</div><div class='commit-msg'>The combo of list_empty() check and return list_first_entry()
can be replaced with list_first_entry_or_null().

Signed-off-by: Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;
Signed-off-by: Eric Anholt &lt;eric@anholt.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=packet-loop-back&amp;id=57b9f569447c4ab7b2a7e34a13e468311db4cd64'>Diffstat</a></div><table summary='diffstat' class='diffstat'>