/*
 * sha1_base.h - core logic for SHA-1 implementations
 *
 * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <crypto/internal/hash.h>
#include <crypto/sha.h>
#include <linux/crypto.h>
#include <linux/module.h>

#include <asm/unaligned.h>

typedef void (sha1_block_fn)(struct sha1_state *sst, u8 const *src, int blocks);

static inline int sha1_base_init(struct shash_desc *desc)
{
	struct sha1_state *sctx = shash_desc_ctx(desc);

	sctx->state[0] = SHA1_H0;
	sctx->state[1] = SHA1_H1;
	sctx->state[2] = SHA1_H2;
	sctx->state[3] = SHA1_H3;
	sctx->state[4] = SHA1_H4;
	sctx->count = 0;

	return 0;
}

static inline int sha1_base_do_update(struct shash_desc *desc,
				      const u8 *data,
				      unsigned int len,
				      sha1_block_fn *block_fn)
{
	struct sha1_state *sctx = shash_desc_ctx(desc);
	unsigned int partial = sctx->count % SHA1_BLOCK_SIZE;

	sctx->count += len;

	if (unlikely((partial + len) >= SHA1_BLOCK_SIZE)) {
		int blocks;

		if (partial) {
			int p = SHA1_BLOCK_SIZE - partial;

			memcpy(sctx->buffer + partial, data, p);
			data += p;
			len -= p;

			block_fn(sctx, sctx->buffer, 1);
		}

		blocks = len / SHA1_BLOCK_SIZE;
		len %= SHA1_BLOCK_SIZE;

		if (blocks) {
			block_fn(sctx, data, blocks);
			data += blocks * SHA1_BLOCK_SIZE;
		}
		partial = 0;
	}
	if (len)
		memcpy(sctx->buffer + partial, data, len);

	return 0;
}

static inline int sha1_base_do_finalize(struct shash_desc *desc,
					sha1_block_fn *block_fn)
{
	const int bit_offset = SHA1_BLOCK_SIZE - sizeof(__be64);
	struct sha1_state *sctx = shash_desc_ctx(desc);
	__be64 *bits = (__be64 *)(sctx->buffer + bit_offset);
	unsigned int partial = sctx->count % SHA1_BLOCK_SIZE;

	sctx->buffer[partial++] = 0x80;
	if (partial > bit_offset) {
		memset(sctx->buffer + partial, 0x0, SHA1_BLOCK_SIZE - partial);
		partial = 0;

		block_fn(sctx, sctx->buffer, 1);
	}

	memset(sctx->buffer + partial, 0x0, bit_offset - partial);
	*bits = cpu_to_be64(sctx->count << 3);
	block_fn(sctx, sctx->buffer, 1);

	return 0;
}

static inline int sha1_base_finish(struct shash_desc *desc, u8 *out)
{
	struct sha1_state *sctx = shash_desc_ctx(desc);
	__be32 *digest = (__be32 *)out;
	int i;

	for (i = 0; i < SHA1_DIGEST_SIZE / sizeof(__be32); i++)
		put_unaligned_be32(sctx->state[i], digest++);

	*sctx = (struct sha1_state){};
	return 0;
}
.cgi/linux/net-next.git/log/?id=3b1137fe74829e021f483756a648cbb87c8a1b4a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?id=3b1137fe74829e021f483756a648cbb87c8a1b4a'>include</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include?id=3b1137fe74829e021f483756a648cbb87c8a1b4a&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=3b1137fe74829e021f483756a648cbb87c8a1b4a'>net: ipv6: Change notifications for multipath add to RTA_MULTIPATH</a></td><td>David Ahern</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=0ae8133586ad1c9be894411aaf8b17bb58c8efe5'>net: ipv6: Allow shorthand delete of all nexthops in multipath route</a></td><td>David Ahern</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-03 17:28:29 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=79e7fff47b7bb4124ef970a13eac4fdeddd1fc25'>net: remove support for per driver ndo_busy_poll()</a></td><td>Eric Dumazet</td><td>2</td><td><span class='deletions'>-5</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-03 16:58:20 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=52e01b84a244473074fc0612c169e2e043d58b01'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next</a></td><td>David S. Miller</td><td>11</td><td><span class='deletions'>-40</span>/<span class='insertions'>+60</span></td></tr>
<tr><td><span title='2017-02-03 16:35:43 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=69ca05ce9dec2cc95070df7f1f10ea6c9c12d237'>sched: cls_flower: expose priority to offloading netdevice</a></td><td>Jiri Pirko</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-03 16:35:42 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=44091d29f2075972aede47ef17e1e70db3d51190'>lib: Introduce priority array area manager</a></td><td>Jiri Pirko</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+76</span></td></tr>
<tr><td><span title='2017-02-03 16:35:42 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=b862815c3ee7b49ec20a9ab25da55a5f0bcbb95e'>list: introduce list_for_each_entry_from_reverse helper</a></td><td>Jiri Pirko</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+13</span></td></tr>
<tr><td><span title='2017-02-03 15:50:18 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=3898fac1f488c76e0eef5b5267b4ba8112a82ac4'>trace: rename trace_print_hex_seq arg and add kdoc</a></td><td>Daniel Borkmann</td><td>2</td><td><span class='deletions'>-3</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-03 15:21:21 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=b3c7ef0adadc5768e0baa786213c6bd1ce521a77'>bridge: uapi: add per vlan tunnel info</a></td><td>Roopa Prabhu</td><td>3</td><td><span class='deletions'>-0</span>/<span class='insertions'>+13</span></td></tr>
<tr><td><span title='2017-02-03 15:21:21 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=3ad7a4b141ebd6091494913672d7166d5c2764e4'>vxlan: support fdb and learning in COLLECT_METADATA mode</a></td><td>Roopa Prabhu</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-03 15:21:21 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=f35581d64e55fc65753a62957b3b98127d560d07'>ip_tunnels: new IP_TUNNEL_INFO_BRIDGE flag for ip_tunnel_info mode</a></td><td>Roopa Prabhu</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-03 15:16:46 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=295a6e06d21e1f469c9f38b00125a13b60ad4e7c'>net/sched: act_ife: Change to use ife module</a></td><td>Yotam Gigi</td><td>2</td><td><span class='deletions'>-10</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-03 15:16:45 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=1ce8460496c05379c66edc178c3c55ca4e953044'>net: Introduce ife encapsulation module</a></td><td>Yotam Gigi</td><td>3</td><td><span class='deletions'>-0</span>/<span class='insertions'>+70</span></td></tr>
<tr><td><span title='2017-02-03 15:16:45 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=1d5e7c859e81a66674d194c346119d154d31e9dc'>net/sched: act_ife: Unexport ife_tlv_meta_encode</a></td><td>Yotam Gigi</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-03 11:19:34 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=3541f9e8bdebce02458882b66b638d7302c1f616'>tcp: add tcp_mss_clamp() helper</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+9</span></td></tr>
<tr><td><span title='2017-02-02 23:34:19 -0500'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=8fe809a992639b2013c0d8da2ba55cdea28a959a'>net: add LINUX_MIB_PFMEMALLOCDROP counter</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-02 22:05:28 -0500'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=60f06fde4cff6f6134decbf09199b5e047bc3355'>net: phy: marvell: Add support for 88e1545 PHY</a></td><td>Andrew Lunn</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-02 21:58:02 -0500'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=ba94f3088b792b16ea576a256a6030feddc87f24'>unix: add ioctl to open a unix socket file with O_PATH</a></td><td>Andrey Vagin</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-02 21:50:51 -0500'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=e4cf8a38fc0d257b4070066e46a678f4777fecaa'>net: phy: Marvell: Add mv88e6390 internal PHY</a></td><td>Andrew Lunn</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+6</span></td></tr>
<tr><td><span title='2017-02-02 16:54:00 -0500'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=e2160156bf2a7d5018e99a9993fbcdda0abac09b'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>David S. Miller</td><td>9</td><td><span class='deletions'>-30</span>/<span class='insertions'>+40</span></td></tr>
<tr><td><span title='2017-02-02 14:31:58 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=2851940ffee313e0ff12540a8e11a8c54dea9c65'>netfilter: allow logging from non-init namespaces</a></td><td>Michal Kubeček</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-02 14:31:57 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=90c1aff702d449a1a248c4829d51c0bc677f968e'>ipvs: free ip_vs_dest structs when refcnt=0</a></td><td>David Windsor</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-02 14:31:56 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=a9e419dc7be6997409dca6d1b9daf3cc7046902f'>netfilter: merge ctinfo into nfct pointer storage area</a></td><td>Florian Westphal</td><td>2</td><td><span class='deletions'>-17</span>/<span class='insertions'>+15</span></td></tr>
<tr><td><span title='2017-02-02 14:31:55 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=303223092081963513494b4377fa1ac9e362ed4b'>netfilter: guarantee 8 byte minalign for template addresses</a></td><td>Florian Westphal</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-02 14:31:54 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=c74454fadd5ea6fc866ffe2c417a0dba56b2bf1c'>netfilter: add and use nf_ct_set helper</a></td><td>Florian Westphal</td><td>2</td><td><span class='deletions'>-2</span>/<span class='insertions'>+9</span></td></tr>
<tr><td><span title='2017-02-02 14:31:53 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=cb9c68363efb6d1f950ec55fb06e031ee70db5fc'>skbuff: add and use skb_nfct helper</a></td><td>Florian Westphal</td><td>2</td><td><span class='deletions'>-4</span>/<span class='insertions'>+11</span></td></tr>
<tr><td><span title='2017-02-02 14:31:52 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=97a6ad13decc16c5adbf181283932daba7e17faf'>netfilter: reduce direct skb-&gt;nfct usage</a></td><td>Florian Westphal</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+6</span></td></tr>
<tr><td><span title='2017-02-02 14:31:51 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=11df4b760f11ca7528c62b1c4b870735d1c62116'>netfilter: conntrack: no need to pass ctinfo to error handler</a></td><td>Florian Westphal</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>