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Diffstat (limited to 'linux/net/ipsec/alg/ipsec_alg_cryptoapi.c')
-rw-r--r--linux/net/ipsec/alg/ipsec_alg_cryptoapi.c421
1 files changed, 0 insertions, 421 deletions
diff --git a/linux/net/ipsec/alg/ipsec_alg_cryptoapi.c b/linux/net/ipsec/alg/ipsec_alg_cryptoapi.c
deleted file mode 100644
index fc68094c2..000000000
--- a/linux/net/ipsec/alg/ipsec_alg_cryptoapi.c
+++ /dev/null
@@ -1,421 +0,0 @@
-/*
- * ipsec_alg to linux cryptoapi GLUE
- *
- * Authors: CODE.ar TEAM
- * Harpo MAxx <harpo@linuxmendoza.org.ar>
- * JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
- * Luciano Ruete <docemeses@softhome.net>
- *
- * $Id: ipsec_alg_cryptoapi.c,v 1.3 2004/09/17 18:57:30 as Exp $
- *
- * 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. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
- *
- * Example usage:
- * modinfo -p ipsec_cryptoapi (quite useful info, including supported algos)
- * modprobe ipsec_cryptoapi
- * modprobe ipsec_cryptoapi test=1
- * modprobe ipsec_cryptoapi excl=1 (exclusive cipher/algo)
- * modprobe ipsec_cryptoapi noauto=1 aes=1 twofish=1 (only these ciphers)
- * modprobe ipsec_cryptoapi aes=128,128 (force these keylens)
- * modprobe ipsec_cryptoapi des_ede3=0 (everything but 3DES)
- */
-#include <linux/config.h>
-#include <linux/version.h>
-
-/*
- * special case: ipsec core modular with this static algo inside:
- * must avoid MODULE magic for this file
- */
-#if CONFIG_IPSEC_MODULE && CONFIG_IPSEC_ALG_CRYPTOAPI
-#undef MODULE
-#endif
-
-#include <linux/module.h>
-#include <linux/init.h>
-
-#include <linux/kernel.h> /* printk() */
-#include <linux/errno.h> /* error codes */
-#include <linux/types.h> /* size_t */
-#include <linux/string.h>
-
-/* Check if __exit is defined, if not null it */
-#ifndef __exit
-#define __exit
-#endif
-
-/* warn the innocent */
-#if !defined (CONFIG_CRYPTO) && !defined (CONFIG_CRYPTO_MODULE)
-#warning "No linux CryptoAPI found, install 2.4.22+ or 2.6.x"
-#define NO_CRYPTOAPI_SUPPORT
-#endif
-/* Low freeswan header coupling */
-#include "freeswan/ipsec_alg.h"
-
-#include <linux/crypto.h>
-#ifdef CRYPTO_API_VERSION_CODE
-#warning "Old CryptoAPI is not supported. Only linux-2.4.22+ or linux-2.6.x are supported"
-#define NO_CRYPTOAPI_SUPPORT
-#endif
-
-#ifdef NO_CRYPTOAPI_SUPPORT
-#warning "Building an unusable module :P"
-/* Catch old CryptoAPI by not allowing module to load */
-IPSEC_ALG_MODULE_INIT( ipsec_cryptoapi_init )
-{
- printk(KERN_WARNING "ipsec_cryptoapi.o was not built on stock Linux CryptoAPI (2.4.22+ or 2.6.x), not loading.\n");
- return -EINVAL;
-}
-#else
-#include <asm/scatterlist.h>
-#include <asm/pgtable.h>
-#include <linux/mm.h>
-
-#define CIPHERNAME_AES "aes"
-#define CIPHERNAME_3DES "des3_ede"
-#define CIPHERNAME_BLOWFISH "blowfish"
-#define CIPHERNAME_CAST "cast5"
-#define CIPHERNAME_SERPENT "serpent"
-#define CIPHERNAME_TWOFISH "twofish"
-
-#define ESP_3DES 3
-#define ESP_AES 12
-#define ESP_BLOWFISH 7 /* truly _constant_ :) */
-#define ESP_CAST 6 /* quite constant :) */
-#define ESP_SERPENT 252 /* from ipsec drafts */
-#define ESP_TWOFISH 253 /* from ipsec drafts */
-
-#define AH_MD5 2
-#define AH_SHA 3
-#define DIGESTNAME_MD5 "md5"
-#define DIGESTNAME_SHA1 "sha1"
-
-MODULE_AUTHOR("Juanjo Ciarlante, Harpo MAxx, Luciano Ruete");
-static int debug=0;
-MODULE_PARM(debug, "i");
-static int test=0;
-MODULE_PARM(test, "i");
-static int excl=0;
-MODULE_PARM(excl, "i");
-
-static int noauto = 0;
-MODULE_PARM(noauto,"i");
-MODULE_PARM_DESC(noauto, "Dont try all known algos, just setup enabled ones");
-
-static int des_ede3[] = {-1, -1};
-static int aes[] = {-1, -1};
-static int blowfish[] = {-1, -1};
-static int cast[] = {-1, -1};
-static int serpent[] = {-1, -1};
-static int twofish[] = {-1, -1};
-
-MODULE_PARM(des_ede3,"1-2i");
-MODULE_PARM(aes,"1-2i");
-MODULE_PARM(blowfish,"1-2i");
-MODULE_PARM(cast,"1-2i");
-MODULE_PARM(serpent,"1-2i");
-MODULE_PARM(twofish,"1-2i");
-MODULE_PARM_DESC(des_ede3, "0: disable | 1: force_enable | min,max: dontuse");
-MODULE_PARM_DESC(aes, "0: disable | 1: force_enable | min,max: keybitlens");
-MODULE_PARM_DESC(blowfish, "0: disable | 1: force_enable | min,max: keybitlens");
-MODULE_PARM_DESC(cast, "0: disable | 1: force_enable | min,max: keybitlens");
-MODULE_PARM_DESC(serpent, "0: disable | 1: force_enable | min,max: keybitlens");
-MODULE_PARM_DESC(twofish, "0: disable | 1: force_enable | min,max: keybitlens");
-
-struct ipsec_alg_capi_cipher {
- const char *ciphername; /* cryptoapi's ciphername */
- unsigned blocksize;
- unsigned short minbits;
- unsigned short maxbits;
- int *parm; /* lkm param for this cipher */
- struct ipsec_alg_enc alg; /* note it's not a pointer */
-};
-static struct ipsec_alg_capi_cipher alg_capi_carray[] = {
- { CIPHERNAME_AES , 16, 128, 256, aes , { ixt_alg_id: ESP_AES, }},
- { CIPHERNAME_TWOFISH , 16, 128, 256, twofish, { ixt_alg_id: ESP_TWOFISH, }},
- { CIPHERNAME_SERPENT , 16, 128, 256, serpent, { ixt_alg_id: ESP_SERPENT, }},
- { CIPHERNAME_CAST , 8, 128, 128, cast , { ixt_alg_id: ESP_CAST, }},
- { CIPHERNAME_BLOWFISH , 8, 128, 448, blowfish,{ ixt_alg_id: ESP_BLOWFISH, }},
- { CIPHERNAME_3DES , 8, 192, 192, des_ede3,{ ixt_alg_id: ESP_3DES, }},
- { NULL, 0, 0, 0, NULL, {} }
-};
-#ifdef NOT_YET
-struct ipsec_alg_capi_digest {
- const char *digestname; /* cryptoapi's digestname */
- struct digest_implementation *di;
- struct ipsec_alg_auth alg; /* note it's not a pointer */
-};
-static struct ipsec_alg_capi_cipher alg_capi_darray[] = {
- { DIGESTNAME_MD5, NULL, { ixt_alg_id: AH_MD5, }},
- { DIGESTNAME_SHA1, NULL, { ixt_alg_id: AH_SHA, }},
- { NULL, NULL, {} }
-};
-#endif
-/*
- * "generic" linux cryptoapi setup_cipher() function
- */
-int setup_cipher(const char *ciphername)
-{
- return crypto_alg_available(ciphername, 0);
-}
-
-/*
- * setups ipsec_alg_capi_cipher "hyper" struct components, calling
- * register_ipsec_alg for cointaned ipsec_alg object
- */
-static void _capi_destroy_key (struct ipsec_alg_enc *alg, __u8 *key_e);
-static __u8 * _capi_new_key (struct ipsec_alg_enc *alg, const __u8 *key, size_t keylen);
-static int _capi_cbc_encrypt(struct ipsec_alg_enc *alg, __u8 * key_e, __u8 * in, int ilen, const __u8 * iv, int encrypt);
-
-static int
-setup_ipsec_alg_capi_cipher(struct ipsec_alg_capi_cipher *cptr)
-{
- int ret;
- cptr->alg.ixt_version = IPSEC_ALG_VERSION;
- cptr->alg.ixt_module = THIS_MODULE;
- atomic_set (& cptr->alg.ixt_refcnt, 0);
- strncpy (cptr->alg.ixt_name , cptr->ciphername, sizeof (cptr->alg.ixt_name));
-
- cptr->alg.ixt_blocksize=cptr->blocksize;
- cptr->alg.ixt_keyminbits=cptr->minbits;
- cptr->alg.ixt_keymaxbits=cptr->maxbits;
- cptr->alg.ixt_state = 0;
- if (excl) cptr->alg.ixt_state |= IPSEC_ALG_ST_EXCL;
- cptr->alg.ixt_e_keylen=cptr->alg.ixt_keymaxbits/8;
- cptr->alg.ixt_e_ctx_size = 0;
- cptr->alg.ixt_alg_type = IPSEC_ALG_TYPE_ENCRYPT;
- cptr->alg.ixt_e_new_key = _capi_new_key;
- cptr->alg.ixt_e_destroy_key = _capi_destroy_key;
- cptr->alg.ixt_e_cbc_encrypt = _capi_cbc_encrypt;
- cptr->alg.ixt_data = cptr;
-
- ret=register_ipsec_alg_enc(&cptr->alg);
- printk("setup_ipsec_alg_capi_cipher(): "
- "alg_type=%d alg_id=%d name=%s "
- "keyminbits=%d keymaxbits=%d, ret=%d\n",
- cptr->alg.ixt_alg_type,
- cptr->alg.ixt_alg_id,
- cptr->alg.ixt_name,
- cptr->alg.ixt_keyminbits,
- cptr->alg.ixt_keymaxbits,
- ret);
- return ret;
-}
-/*
- * called in ipsec_sa_wipe() time, will destroy key contexts
- * and do 1 unbind()
- */
-static void
-_capi_destroy_key (struct ipsec_alg_enc *alg, __u8 *key_e)
-{
- struct crypto_tfm *tfm=(struct crypto_tfm*)key_e;
-
- if (debug > 0)
- printk(KERN_DEBUG "klips_debug: _capi_destroy_key:"
- "name=%s key_e=%p \n",
- alg->ixt_name, key_e);
- if (!key_e) {
- printk(KERN_ERR "klips_debug: _capi_destroy_key:"
- "name=%s NULL key_e!\n",
- alg->ixt_name);
- return;
- }
- crypto_free_tfm(tfm);
-}
-
-/*
- * create new key context, need alg->ixt_data to know which
- * (of many) cipher inside this module is the target
- */
-static __u8 *
-_capi_new_key (struct ipsec_alg_enc *alg, const __u8 *key, size_t keylen)
-{
- struct ipsec_alg_capi_cipher *cptr;
- struct crypto_tfm *tfm=NULL;
-
- cptr = alg->ixt_data;
- if (!cptr) {
- printk(KERN_ERR "_capi_new_key(): "
- "NULL ixt_data (?!) for \"%s\" algo\n"
- , alg->ixt_name);
- goto err;
- }
- if (debug > 0)
- printk(KERN_DEBUG "klips_debug:_capi_new_key:"
- "name=%s cptr=%p key=%p keysize=%d\n",
- alg->ixt_name, cptr, key, keylen);
-
- /*
- * alloc tfm
- */
- tfm = crypto_alloc_tfm(cptr->ciphername, CRYPTO_TFM_MODE_CBC);
- if (!tfm) {
- printk(KERN_ERR "_capi_new_key(): "
- "NULL tfm for \"%s\" cryptoapi (\"%s\") algo\n"
- , alg->ixt_name, cptr->ciphername);
- goto err;
- }
- if (crypto_cipher_setkey(tfm, key, keylen) < 0) {
- printk(KERN_ERR "_capi_new_key(): "
- "failed new_key() for \"%s\" cryptoapi algo (keylen=%d)\n"
- , alg->ixt_name, keylen);
- crypto_free_tfm(tfm);
- tfm=NULL;
- }
-err:
- if (debug > 0)
- printk(KERN_DEBUG "klips_debug:_capi_new_key:"
- "name=%s key=%p keylen=%d tfm=%p\n",
- alg->ixt_name, key, keylen, tfm);
- return (__u8 *) tfm;
-}
-/*
- * core encryption function: will use cx->ci to call actual cipher's
- * cbc function
- */
-static int
-_capi_cbc_encrypt(struct ipsec_alg_enc *alg, __u8 * key_e, __u8 * in, int ilen, const __u8 * iv, int encrypt) {
- int error =0;
- struct crypto_tfm *tfm=(struct crypto_tfm *)key_e;
- struct scatterlist sg = {
- .page = virt_to_page(in),
- .offset = (unsigned long)(in) % PAGE_SIZE,
- .length=ilen,
- };
- if (debug > 1)
- printk(KERN_DEBUG "klips_debug:_capi_cbc_encrypt:"
- "key_e=%p "
- "in=%p out=%p ilen=%d iv=%p encrypt=%d\n"
- , key_e
- , in, in, ilen, iv, encrypt);
- crypto_cipher_set_iv(tfm, iv, crypto_tfm_alg_ivsize(tfm));
- if (encrypt)
- error = crypto_cipher_encrypt (tfm, &sg, &sg, ilen);
- else
- error = crypto_cipher_decrypt (tfm, &sg, &sg, ilen);
- if (debug > 1)
- printk(KERN_DEBUG "klips_debug:_capi_cbc_encrypt:"
- "error=%d\n"
- , error);
- return (error<0)? error : ilen;
-}
-/*
- * main initialization loop: for each cipher in list, do
- * 1) setup cryptoapi cipher else continue
- * 2) register ipsec_alg object
- */
-static int
-setup_cipher_list (struct ipsec_alg_capi_cipher* clist)
-{
- struct ipsec_alg_capi_cipher *cptr;
- /* foreach cipher in list ... */
- for (cptr=clist;cptr->ciphername;cptr++) {
- /*
- * see if cipher has been disabled (0) or
- * if noauto set and not enabled (1)
- */
- if (cptr->parm[0] == 0 || (noauto && cptr->parm[0] < 0)) {
- if (debug>0)
- printk(KERN_INFO "setup_cipher_list(): "
- "ciphername=%s skipped at user request: "
- "noauto=%d parm[0]=%d parm[1]=%d\n"
- , cptr->ciphername
- , noauto
- , cptr->parm[0]
- , cptr->parm[1]);
- continue;
- }
- /*
- * use a local ci to avoid touching cptr->ci,
- * if register ipsec_alg success then bind cipher
- */
- if( setup_cipher(cptr->ciphername) ) {
- if (debug > 0)
- printk(KERN_DEBUG "klips_debug:"
- "setup_cipher_list():"
- "ciphername=%s found\n"
- , cptr->ciphername);
- if (setup_ipsec_alg_capi_cipher(cptr) == 0) {
-
-
- } else {
- printk(KERN_ERR "klips_debug:"
- "setup_cipher_list():"
- "ciphername=%s failed ipsec_alg_register\n"
- , cptr->ciphername);
- }
- } else {
- if (debug>0)
- printk(KERN_INFO "setup_cipher_list(): lookup for ciphername=%s: not found \n",
- cptr->ciphername);
- }
- }
- return 0;
-}
-/*
- * deregister ipsec_alg objects and unbind ciphers
- */
-static int
-unsetup_cipher_list (struct ipsec_alg_capi_cipher* clist)
-{
- struct ipsec_alg_capi_cipher *cptr;
- /* foreach cipher in list ... */
- for (cptr=clist;cptr->ciphername;cptr++) {
- if (cptr->alg.ixt_state & IPSEC_ALG_ST_REGISTERED) {
- unregister_ipsec_alg_enc(&cptr->alg);
- }
- }
- return 0;
-}
-/*
- * test loop for registered algos
- */
-static int
-test_cipher_list (struct ipsec_alg_capi_cipher* clist)
-{
- int test_ret;
- struct ipsec_alg_capi_cipher *cptr;
- /* foreach cipher in list ... */
- for (cptr=clist;cptr->ciphername;cptr++) {
- if (cptr->alg.ixt_state & IPSEC_ALG_ST_REGISTERED) {
- test_ret=ipsec_alg_test(
- cptr->alg.ixt_alg_type,
- cptr->alg.ixt_alg_id,
- test);
- printk("test_cipher_list(alg_type=%d alg_id=%d): test_ret=%d\n",
- cptr->alg.ixt_alg_type,
- cptr->alg.ixt_alg_id,
- test_ret);
- }
- }
- return 0;
-}
-
-IPSEC_ALG_MODULE_INIT( ipsec_cryptoapi_init )
-{
- int ret, test_ret;
- if ((ret=setup_cipher_list(alg_capi_carray)) < 0)
- return -EPROTONOSUPPORT;
- if (ret==0 && test) {
- test_ret=test_cipher_list(alg_capi_carray);
- }
- return ret;
-}
-IPSEC_ALG_MODULE_EXIT( ipsec_cryptoapi_fini )
-{
- unsetup_cipher_list(alg_capi_carray);
- return;
-}
-#ifdef MODULE_LICENSE
-MODULE_LICENSE("GPL");
-#endif
-
-EXPORT_NO_SYMBOLS;
-#endif /* NO_CRYPTOAPI_SUPPORT */
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