/*
 * Scatterlist Cryptographic API.
 *
 * Procfs information.
 *
 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option) 
 * any later version.
 *
 */

#include <asm/atomic.h>
#include <linux/init.h>
#include <linux/crypto.h>
#include <linux/rwsem.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include "internal.h"

static void *c_start(struct seq_file *m, loff_t *pos)
{
	down_read(&crypto_alg_sem);
	return seq_list_start(&crypto_alg_list, *pos);
}

static void *c_next(struct seq_file *m, void *p, loff_t *pos)
{
	return seq_list_next(p, &crypto_alg_list, pos);
}

static void c_stop(struct seq_file *m, void *p)
{
	up_read(&crypto_alg_sem);
}

static int c_show(struct seq_file *m, void *p)
{
	struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
	
	seq_printf(m, "name         : %s\n", alg->cra_name);
	seq_printf(m, "driver       : %s\n", alg->cra_driver_name);
	seq_printf(m, "module       : %s\n", module_name(alg->cra_module));
	seq_printf(m, "priority     : %d\n", alg->cra_priority);
	seq_printf(m, "refcnt       : %d\n", atomic_read(&alg->cra_refcnt));
	
	switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
	case CRYPTO_ALG_TYPE_CIPHER:
		seq_printf(m, "type         : cipher\n");
		seq_printf(m, "blocksize    : %u\n", alg->cra_blocksize);
		seq_printf(m, "min keysize  : %u\n",
					alg->cra_cipher.cia_min_keysize);
		seq_printf(m, "max keysize  : %u\n",
					alg->cra_cipher.cia_max_keysize);
		break;
		
	case CRYPTO_ALG_TYPE_DIGEST:
		seq_printf(m, "type         : digest\n");
		seq_printf(m, "blocksize    : %u\n", alg->cra_blocksize);
		seq_printf(m, "digestsize   : %u\n",
		           alg->cra_digest.dia_digestsize);
		break;
	case CRYPTO_ALG_TYPE_COMPRESS:
		seq_printf(m, "type         : compression\n");
		break;
	default:
		if (alg->cra_type && alg->cra_type->show)
			alg->cra_type->show(m, alg);
		else
			seq_printf(m, "type         : unknown\n");
		break;
	}

	seq_putc(m, '\n');
	return 0;
}

static const struct seq_operations crypto_seq_ops = {
	.start		= c_start,
	.next		= c_next,
	.stop		= c_stop,
	.show		= c_show
};

static int crypto_info_open(structpre { line-height: 125%; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .ges { font-weight: bold; font-style: italic } /* Generic.EmphStrong */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
/*
 * Cryptographic API.
 *
 * Anubis Algorithm
 *
 * The Anubis algorithm was developed by Paulo S. L. M. Barreto and
 * Vincent Rijmen.
 *
 * See
 *
 *	P.S.L.M. Barreto, V. Rijmen,
 *	``The Anubis block cipher,''
 *	NESSIE submission, 2000.
 *
 * This software implements the "tweaked" version of Anubis.
 * Only the S-box and (consequently) the rounds constants have been
 * changed.
 *
 * The original authors have disclaimed all copyright interest in this
 * code and thus put it in the public domain. The subsequent authors
 * have put this under the GNU General Public License.
 *
 * By Aaron Grothe ajgrothe@yahoo.com, October 28, 2004
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <asm/byteorder.h>
#include <linux/crypto.h>
#include <linux/types.h>

#define ANUBIS_MIN_KEY_SIZE	16
#define ANUBIS_MAX_KEY_SIZE	40
#define ANUBIS_BLOCK_SIZE	16
#define ANUBIS_MAX_N		10
#define ANUBIS_MAX_ROUNDS	(8 + ANUBIS_MAX_N)

struct anubis_ctx {
	int key_len; // in bits
	int R;
	u32 E[ANUBIS_MAX_ROUNDS + 1][4];
	u32 D[ANUBIS_MAX_ROUNDS + 1][4];
};

static const u32 T0[256] = {
	0xba69d2bbU, 0x54a84de5U, 0x2f5ebce2U, 0x74e8cd25U,
	0x53a651f7U, 0xd3bb6bd0U, 0xd2b96fd6U, 0x4d9a29b3U,
	0x50a05dfdU, 0xac458acfU, 0x8d070e09U, 0xbf63c6a5U,
	0x70e0dd3dU, 0x52a455f1U, 0x9a29527bU, 0x4c982db5U,
	0xeac98f46U, 0xd5b773c4U, 0x97336655U, 0xd1bf63dcU,
	0x3366ccaaU, 0x51a259fbU, 0x5bb671c7U, 0xa651a2f3U,
	0xdea15ffeU, 0x48903dadU, 0xa84d9ad7U, 0x992f5e71U,
	0xdbab4be0U, 0x3264c8acU, 0xb773e695U, 0xfce5d732U,
	0xe3dbab70U, 0x9e214263U, 0x913f7e41U, 0x9b2b567dU,
	0xe2d9af76U, 0xbb6bd6bdU, 0x4182199bU, 0x6edca579U,
	0xa557aef9U, 0xcb8b0b80U, 0x6bd6b167U, 0x95376e59U,
	0xa15fbee1U, 0xf3fbeb10U, 0xb17ffe81U, 0x0204080cU,
	0xcc851792U, 0xc49537a2U, 0x1d3a744eU, 0x14285078U,
	0xc39b2bb0U, 0x63c69157U, 0xdaa94fe6U, 0x5dba69d3U,
	0x5fbe61dfU, 0xdca557f2U, 0x7dfae913U, 0xcd871394U,
	0x7ffee11fU, 0x5ab475c1U, 0x6cd8ad75U, 0x5cb86dd5U,
	0xf7f3fb08U, 0x264c98d4U, 0xffe3db38U, 0xedc79354U,
	0xe8cd874aU, 0x9d274e69U, 0x6fdea17fU, 0x8e010203U,
	0x19326456U, 0xa05dbae7U, 0xf0fde71aU, 0x890f1e11U,
	0x0f1e3c22U, 0x070e1c12U, 0xaf4386c5U, 0xfbebcb20U,
	0x08102030U, 0x152a547eU, 0x0d1a342eU, 0x04081018U,
	0x01020406U, 0x64c88d45U, 0xdfa35bf8U, 0x76ecc529U,
	0x79f2f90bU, 0xdda753f4U, 0x3d7af48eU, 0x162c5874U,
	0x3f7efc82U, 0x376edcb2U, 0x6ddaa973U, 0x3870e090U,
	0xb96fdeb1U, 0x73e6d137U, 0xe9cf834cU, 0x356ad4beU,
	0x55aa49e3U, 0x71e2d93bU, 0x7bf6f107U, 0x8c050a0fU,
	0x72e4d531U, 0x880d1a17U, 0xf6f1ff0eU, 0x2a54a8fcU,
	0x3e7cf884U, 0x5ebc65d9U, 0x274e9cd2U, 0x468c0589U,
	0x0c183028U, 0x65ca8943U, 0x68d0bd6dU, 0x61c2995bU,
	0x03060c0aU, 0xc19f23bcU, 0x57ae41efU, 0xd6b17fceU,
	0xd9af43ecU, 0x58b07dcdU, 0xd8ad47eaU, 0x66cc8549U,
	0xd7b37bc8U, 0x3a74e89cU, 0xc88d078aU, 0x3c78f088U,
	0xfae9cf26U, 0x96316253U, 0xa753a6f5U, 0x982d5a77U,
	0xecc59752U, 0xb86ddab7U, 0xc7933ba8U, 0xae4182c3U,
	0x69d2b96bU, 0x4b9631a7U, 0xab4b96ddU, 0xa94f9ed1U,
	0x67ce814fU, 0x0a14283cU, 0x478e018fU, 0xf2f9ef16U,
	0xb577ee99U, 0x224488ccU, 0xe5d7b364U, 0xeec19f5eU,
	0xbe61c2a3U, 0x2b56acfaU, 0x811f3e21U, 0x1224486cU,
	0x831b362dU, 0x1b366c5aU, 0x0e1c3824U, 0x23468ccaU,
	0xf5f7f304U, 0x458a0983U, 0x214284c6U, 0xce811f9eU,
	0x499239abU, 0x2c58b0e8U, 0xf9efc32cU, 0xe6d1bf6eU,
	0xb671e293U, 0x2850a0f0U, 0x172e5c72U, 0x8219322bU,
	0x1a34685cU, 0x8b0b161dU, 0xfee1df3eU, 0x8a09121bU,
	0x09122436U, 0xc98f038cU, 0x87132635U, 0x4e9c25b9U,
	0xe1dfa37cU, 0x2e5cb8e4U, 0xe4d5b762U, 0xe0dda77aU,
	0xebcb8b40U, 0x903d7a47U, 0xa455aaffU, 0x1e3c7844U,
	0x85172e39U, 0x60c09d5dU, 0x00000000U, 0x254a94deU,
	0xf4f5f702U, 0xf1ffe31cU, 0x94356a5fU, 0x0b162c3aU,
	0xe7d3bb68U, 0x75eac923U, 0xefc39b58U, 0x3468d0b8U,
	0x3162c4a6U, 0xd4b577c2U, 0xd0bd67daU, 0x86112233U,
	0x7efce519U, 0xad478ec9U, 0xfde7d334U, 0x2952a4f6U,
	0x3060c0a0U, 0x3b76ec9aU, 0x9f234665U, 0xf8edc72aU,
	0xc6913faeU, 0x13264c6aU, 0x060c1814U, 0x050a141eU,
	0xc59733a4U, 0x11224466U, 0x77eec12fU, 0x7cf8ed15U,
	0x7af4f501U, 0x78f0fd0dU, 0x366cd8b4U, 0x1c387048U,
	0x3972e496U, 0x59b279cbU, 0x18306050U, 0x56ac45e9U,
	0xb37bf68dU, 0xb07dfa87U, 0x244890d8U, 0x204080c0U,
	0xb279f28bU, 0x9239724bU, 0xa35bb6edU, 0xc09d27baU,
	0x44880d85U, 0x62c49551U, 0x10204060U, 0xb475ea9fU,
	0x84152a3fU, 0x43861197U, 0x933b764dU, 0xc2992fb6U,
	0x4a9435a1U, 0xbd67cea9U, 0x8f030605U, 0x2d5ab4eeU,
	0xbc65caafU, 0x9c254a6fU, 0x6ad4b561U, 0x40801d9dU,
	0xcf831b98U, 0xa259b2ebU, 0x801d3a27U, 0x4f9e21bfU,
	0x1f3e7c42U, 0xca890f86U, 0xaa4992dbU, 0x42841591U,
};

static const u32 T1[256] = {
	0x69babbd2U, 0xa854e54dU, 0x5e2fe2bcU, 0xe87425cdU,
	0xa653f751U, 0xbbd3d06bU, 0xb9d2d66fU, 0x9a4db329U,
	0xa050fd5dU, 0x45accf8aU, 0x078d090eU, 0x63bfa5c6U,
	0xe0703dddU, 0xa452f155U, 0x299a7b52U, 0x984cb52dU,
	0xc9ea468fU, 0xb7d5c473U, 0x33975566U, 0xbfd1dc63U,
	0x6633aaccU, 0xa251fb59U, 0xb65bc771U, 0x51a6f3a2U,
	0xa1defe5fU, 0x9048ad3dU, 0x4da8d79aU, 0x2f99715eU,
	0xabdbe04bU, 0x6432acc8U, 0x73b795e6U, 0xe5fc32d7U,
	0xdbe370abU, 0x219e6342U, 0x3f91417eU, 0x2b9b7d56U,
	0xd9e276afU, 0x6bbbbdd6U, 0x82419b19U, 0xdc6e79a5U,
	0x57a5f9aeU, 0x8bcb800bU, 0xd66b67b1U, 0x3795596eU,
	0x5fa1e1beU, 0xfbf310ebU, 0x7fb181feU, 0x04020c08U,
	0x85cc9217U, 0x95c4a237U, 0x3a1d4e74U, 0x28147850U,
	0x9bc3b02bU, 0xc6635791U, 0xa9dae64fU, 0xba5dd369U,
	0xbe5fdf61U, 0xa5dcf257U, 0xfa7d13e9U, 0x87cd9413U,
	0xfe7f1fe1U, 0xb45ac175U, 0xd86c75adU, 0xb85cd56dU,
	0xf3f708fbU, 0x4c26d498U, 0xe3ff38dbU, 0xc7ed5493U,
	0xcde84a87U, 0x279d694eU, 0xde6f7fa1U, 0x018e0302U,
	0x32195664U, 0x5da0e7baU, 0xfdf01ae7U, 0x0f89111eU,
	0x1e0f223cU, 0x0e07121cU, 0x43afc586U, 0xebfb20cbU,
	0x10083020U, 0x2a157e54U, 0x1a0d2e34U, 0x08041810U,
	0x02010604U, 0xc864458dU, 0xa3dff85bU, 0xec7629c5U,
	0xf2790bf9U, 0xa7ddf453U