OpenSolaris_b135/uts/common/des/des_crypt.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
*/
/*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley 4.3 BSD
* under license from the Regents of the University of California.
*/
/*
* des_crypt.c, DES encryption library routines
*/
#include <sys/errno.h>
#include <sys/modctl.h>
#include <sys/systm.h>
#include <sys/cmn_err.h>
#include <sys/ddi.h>
#include <sys/crypto/common.h>
#include <sys/crypto/spi.h>
#include <sys/sysmacros.h>
#include <sys/strsun.h>
#include <sys/note.h>
#include <modes/modes.h>
#define _DES_FIPS_POST
#include <des/des_impl.h>
/* EXPORT DELETE START */
#include <sys/types.h>
#include <rpc/des_crypt.h>
#include <des/des.h>
#ifdef sun_hardware
#include <sys/ioctl.h>
#ifdef _KERNEL
#include <sys/conf.h>
static int g_desfd = -1;
#define getdesfd() (cdevsw[11].d_open(0, 0) ? -1 : 0)
#define ioctl(a, b, c) (cdevsw[11].d_ioctl(0, b, c, 0) ? -1 : 0)
#else
#define getdesfd() (open("/dev/des", 0, 0))
#endif /* _KERNEL */
#endif /* sun */
static int common_crypt(char *key, char *buf, size_t len,
unsigned int mode, struct desparams *desp);
extern int _des_crypt(char *buf, size_t len, struct desparams *desp);
/* EXPORT DELETE END */
extern struct mod_ops mod_cryptoops;
/*
* Module linkage information for the kernel.
*/
static struct modlmisc modlmisc = {
&mod_miscops,
"des encryption",
};
static struct modlcrypto modlcrypto = {
&mod_cryptoops,
"DES Kernel SW Provider"
};
static struct modlinkage modlinkage = {
MODREV_1,
&modlmisc,
&modlcrypto,
NULL
};
/* EXPORT DELETE START */
#define DES_MIN_KEY_LEN DES_MINBYTES
#define DES_MAX_KEY_LEN DES_MAXBYTES
#define DES3_MIN_KEY_LEN DES3_MAXBYTES /* no CKK_DES2 support */
#define DES3_MAX_KEY_LEN DES3_MAXBYTES
/* EXPORT DELETE END */
#ifndef DES_MIN_KEY_LEN
#define DES_MIN_KEY_LEN 0
#endif
#ifndef DES_MAX_KEY_LEN
#define DES_MAX_KEY_LEN 0
#endif
#ifndef DES3_MIN_KEY_LEN
#define DES3_MIN_KEY_LEN 0
#endif
#ifndef DES3_MAX_KEY_LEN
#define DES3_MAX_KEY_LEN 0
#endif
/*
* Mechanism info structure passed to KCF during registration.
*/
static crypto_mech_info_t des_mech_info_tab[] = {
/* DES_ECB */
{SUN_CKM_DES_ECB, DES_ECB_MECH_INFO_TYPE,
CRYPTO_FG_ENCRYPT | CRYPTO_FG_ENCRYPT_ATOMIC |
CRYPTO_FG_DECRYPT | CRYPTO_FG_DECRYPT_ATOMIC,
DES_MIN_KEY_LEN, DES_MAX_KEY_LEN, CRYPTO_KEYSIZE_UNIT_IN_BYTES},
/* DES_CBC */
{SUN_CKM_DES_CBC, DES_CBC_MECH_INFO_TYPE,
CRYPTO_FG_ENCRYPT | CRYPTO_FG_ENCRYPT_ATOMIC |
CRYPTO_FG_DECRYPT | CRYPTO_FG_DECRYPT_ATOMIC,
DES_MIN_KEY_LEN, DES_MAX_KEY_LEN, CRYPTO_KEYSIZE_UNIT_IN_BYTES},
/* DES3_ECB */
{SUN_CKM_DES3_ECB, DES3_ECB_MECH_INFO_TYPE,
CRYPTO_FG_ENCRYPT | CRYPTO_FG_ENCRYPT_ATOMIC |
CRYPTO_FG_DECRYPT | CRYPTO_FG_DECRYPT_ATOMIC,
DES3_MIN_KEY_LEN, DES3_MAX_KEY_LEN, CRYPTO_KEYSIZE_UNIT_IN_BYTES},
/* DES3_CBC */
{SUN_CKM_DES3_CBC, DES3_CBC_MECH_INFO_TYPE,
CRYPTO_FG_ENCRYPT | CRYPTO_FG_ENCRYPT_ATOMIC |
CRYPTO_FG_DECRYPT | CRYPTO_FG_DECRYPT_ATOMIC,
DES3_MIN_KEY_LEN, DES3_MAX_KEY_LEN, CRYPTO_KEYSIZE_UNIT_IN_BYTES}
};
/* operations are in-place if the output buffer is NULL */
#define DES_ARG_INPLACE(input, output) \
if ((output) == NULL) \
(output) = (input);
static void des_provider_status(crypto_provider_handle_t, uint_t *);
static crypto_control_ops_t des_control_ops = {
des_provider_status
};
static int
des_common_init(crypto_ctx_t *, crypto_mechanism_t *, crypto_key_t *,
crypto_spi_ctx_template_t, crypto_req_handle_t);
static int des_common_init_ctx(des_ctx_t *, crypto_spi_ctx_template_t *,
crypto_mechanism_t *, crypto_key_t *, des_strength_t, int);
static int des_encrypt_final(crypto_ctx_t *, crypto_data_t *,
crypto_req_handle_t);
static int des_decrypt_final(crypto_ctx_t *, crypto_data_t *,
crypto_req_handle_t);
static int des_encrypt(crypto_ctx_t *, crypto_data_t *, crypto_data_t *,
crypto_req_handle_t);
static int des_encrypt_update(crypto_ctx_t *, crypto_data_t *,
crypto_data_t *, crypto_req_handle_t);
static int des_encrypt_atomic(crypto_provider_handle_t, crypto_session_id_t,
crypto_mechanism_t *, crypto_key_t *, crypto_data_t *,
crypto_data_t *, crypto_spi_ctx_template_t, crypto_req_handle_t);
static int des_decrypt(crypto_ctx_t *, crypto_data_t *, crypto_data_t *,
crypto_req_handle_t);
static int des_decrypt_update(crypto_ctx_t *, crypto_data_t *,
crypto_data_t *, crypto_req_handle_t);
static int des_decrypt_atomic(crypto_provider_handle_t, crypto_session_id_t,
crypto_mechanism_t *, crypto_key_t *, crypto_data_t *,
crypto_data_t *, crypto_spi_ctx_template_t, crypto_req_handle_t);
static crypto_cipher_ops_t des_cipher_ops = {
des_common_init,
des_encrypt,
des_encrypt_update,
des_encrypt_final,
des_encrypt_atomic,
des_common_init,
des_decrypt,
des_decrypt_update,
des_decrypt_final,
des_decrypt_atomic
};
static int des_create_ctx_template(crypto_provider_handle_t,
crypto_mechanism_t *, crypto_key_t *, crypto_spi_ctx_template_t *,
size_t *, crypto_req_handle_t);
static int des_free_context(crypto_ctx_t *);
static crypto_ctx_ops_t des_ctx_ops = {
des_create_ctx_template,
des_free_context
};
static int des_key_check(crypto_provider_handle_t, crypto_mechanism_t *,
crypto_key_t *);
static crypto_key_ops_t des_key_ops = {
NULL,
NULL,
NULL,
NULL,
NULL,
des_key_check
};
static void des_POST(int *);
static crypto_fips140_ops_t des_fips140_ops = {
des_POST
};
static crypto_ops_t des_crypto_ops = {
&des_control_ops,
NULL,
&des_cipher_ops,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
&des_key_ops,
NULL,
&des_ctx_ops,
NULL,
NULL,
&des_fips140_ops
};
static crypto_provider_info_t des_prov_info = {
CRYPTO_SPI_VERSION_4,
"DES Software Provider",
CRYPTO_SW_PROVIDER,
{&modlinkage},
NULL,
&des_crypto_ops,
sizeof (des_mech_info_tab)/sizeof (crypto_mech_info_t),
des_mech_info_tab
};
static crypto_kcf_provider_handle_t des_prov_handle = NULL;
int
_init(void)
{
int ret;
if ((ret = mod_install(&modlinkage)) != 0)
return (ret);
/*
* Register with KCF. If the registration fails, kcf will log an
* error but do not uninstall the module, since the functionality
* provided by misc/des should still be available.
*
*/
(void) crypto_register_provider(&des_prov_info, &des_prov_handle);
return (0);
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&modlinkage, modinfop));
}
/*
* Copy 8 bytes
*/
#define COPY8(src, dst) { \
char *a = (char *)dst; \
char *b = (char *)src; \
*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
}
/*
* Copy multiple of 8 bytes
*/
#define DESCOPY(src, dst, len) { \
char *a = (char *)dst; \
char *b = (char *)src; \
int i; \
for (i = (size_t)len; i > 0; i -= 8) { \
*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
} \
}
/*
* CBC mode encryption
*/
/* ARGSUSED */
int
cbc_crypt(char *key, char *buf, size_t len, unsigned int mode, char *ivec)
{
int err = 0;
/* EXPORT DELETE START */
struct desparams dp;
dp.des_mode = CBC;
COPY8(ivec, dp.des_ivec);
err = common_crypt(key, buf, len, mode, &dp);
COPY8(dp.des_ivec, ivec);
/* EXPORT DELETE END */
return (err);
}
/*
* ECB mode encryption
*/
/* ARGSUSED */
int
ecb_crypt(char *key, char *buf, size_t len, unsigned int mode)
{
int err = 0;
/* EXPORT DELETE START */
struct desparams dp;
dp.des_mode = ECB;
err = common_crypt(key, buf, len, mode, &dp);
/* EXPORT DELETE END */
return (err);
}
/* EXPORT DELETE START */
/*
* Common code to cbc_crypt() & ecb_crypt()
*/
static int
common_crypt(char *key, char *buf, size_t len, unsigned int mode,
struct desparams *desp)
{
int desdev;
if ((len % 8) != 0 || len > DES_MAXDATA)
return (DESERR_BADPARAM);
desp->des_dir =
((mode & DES_DIRMASK) == DES_ENCRYPT) ? ENCRYPT : DECRYPT;
desdev = mode & DES_DEVMASK;
COPY8(key, desp->des_key);
#ifdef sun_hardware
if (desdev == DES_HW) {
int res;
if (g_desfd < 0 &&
(g_desfd == -1 || (g_desfd = getdesfd()) < 0))
goto software; /* no hardware device */
/*
* hardware
*/
desp->des_len = len;
if (len <= DES_QUICKLEN) {
DESCOPY(buf, desp->des_data, len);
res = ioctl(g_desfd, DESIOCQUICK, (char *)desp);
DESCOPY(desp->des_data, buf, len);
} else {
desp->des_buf = (uchar_t *)buf;
res = ioctl(g_desfd, DESIOCBLOCK, (char *)desp);
}
return (res == 0 ? DESERR_NONE : DESERR_HWERROR);
}
software:
#endif
/*
* software
*/
if (!_des_crypt(buf, len, desp))
return (DESERR_HWERROR);
return (desdev == DES_SW ? DESERR_NONE : DESERR_NOHWDEVICE);
}
/*
* Initialize key schedules for DES and DES3
*/
static int
init_keysched(crypto_key_t *key, void *newbie, des_strength_t strength)
{
uint8_t corrected_key[DES3_KEYSIZE];
/*
* Only keys by value are supported by this module.
*/
switch (key->ck_format) {
case CRYPTO_KEY_RAW:
if (strength == DES && key->ck_length != DES_MAXBITS)
return (CRYPTO_KEY_SIZE_RANGE);
if (strength == DES3 && key->ck_length != DES3_MAXBITS)
return (CRYPTO_KEY_SIZE_RANGE);
break;
default:
return (CRYPTO_KEY_TYPE_INCONSISTENT);
}
/*
* Fix parity bits.
* Initialize key schedule even if key is weak.
*/
if (key->ck_data == NULL)
return (CRYPTO_ARGUMENTS_BAD);
des_parity_fix(key->ck_data, strength, corrected_key);
des_init_keysched(corrected_key, strength, newbie);
return (CRYPTO_SUCCESS);
}
/* EXPORT DELETE END */
/*
* KCF software provider control entry points.
*/
/* ARGSUSED */
static void
des_provider_status(crypto_provider_handle_t provider, uint_t *status)
{
*status = CRYPTO_PROVIDER_READY;
}
/*
* KCF software provider encrypt entry points.
*/
static int
des_common_init(crypto_ctx_t *ctx, crypto_mechanism_t *mechanism,
crypto_key_t *key, crypto_spi_ctx_template_t template,
crypto_req_handle_t req)
{
/* EXPORT DELETE START */
des_strength_t strength;
des_ctx_t *des_ctx = NULL;
int rv;
int kmflag;
/*
* Only keys by value are supported by this module.
*/
if (key->ck_format != CRYPTO_KEY_RAW) {
return (CRYPTO_KEY_TYPE_INCONSISTENT);
}
kmflag = crypto_kmflag(req);
/* Check mechanism type and parameter length */
switch (mechanism->cm_type) {
case DES_ECB_MECH_INFO_TYPE:
des_ctx = ecb_alloc_ctx(kmflag);
/* FALLTHRU */
case DES_CBC_MECH_INFO_TYPE:
if (mechanism->cm_param != NULL &&
mechanism->cm_param_len != DES_BLOCK_LEN)
return (CRYPTO_MECHANISM_PARAM_INVALID);
if (key->ck_length != DES_MAXBITS)
return (CRYPTO_KEY_SIZE_RANGE);
strength = DES;
if (des_ctx == NULL)
des_ctx = cbc_alloc_ctx(kmflag);
break;
case DES3_ECB_MECH_INFO_TYPE:
des_ctx = ecb_alloc_ctx(kmflag);
/* FALLTHRU */
case DES3_CBC_MECH_INFO_TYPE:
if (mechanism->cm_param != NULL &&
mechanism->cm_param_len != DES_BLOCK_LEN)
return (CRYPTO_MECHANISM_PARAM_INVALID);
if (key->ck_length != DES3_MAXBITS)
return (CRYPTO_KEY_SIZE_RANGE);
strength = DES3;
if (des_ctx == NULL)
des_ctx = cbc_alloc_ctx(kmflag);
break;
default:
return (CRYPTO_MECHANISM_INVALID);
}
if ((rv = des_common_init_ctx(des_ctx, template, mechanism, key,
strength, kmflag)) != CRYPTO_SUCCESS) {
crypto_free_mode_ctx(des_ctx);
return (rv);
}
ctx->cc_provider_private = des_ctx;
/* EXPORT DELETE END */
return (CRYPTO_SUCCESS);
}
static void
des_copy_block64(uint8_t *in, uint64_t *out)
{
if (IS_P2ALIGNED(in, sizeof (uint64_t))) {
/* LINTED: pointer alignment */
out[0] = *(uint64_t *)&in[0];
} else {
uint64_t tmp64;
#ifdef _BIG_ENDIAN
tmp64 = (((uint64_t)in[0] << 56) |
((uint64_t)in[1] << 48) |
((uint64_t)in[2] << 40) |
((uint64_t)in[3] << 32) |
((uint64_t)in[4] << 24) |
((uint64_t)in[5] << 16) |
((uint64_t)in[6] << 8) |
(uint64_t)in[7]);
#else
tmp64 = (((uint64_t)in[7] << 56) |
((uint64_t)in[6] << 48) |
((uint64_t)in[5] << 40) |
((uint64_t)in[4] << 32) |
((uint64_t)in[3] << 24) |
((uint64_t)in[2] << 16) |
((uint64_t)in[1] << 8) |
(uint64_t)in[0]);
#endif /* _BIG_ENDIAN */
out[0] = tmp64;
}
}
/* ARGSUSED */
static int
des_encrypt(crypto_ctx_t *ctx, crypto_data_t *plaintext,
crypto_data_t *ciphertext, crypto_req_handle_t req)
{
int ret;
/* EXPORT DELETE START */
des_ctx_t *des_ctx;
/*
* Plaintext must be a multiple of the block size.
* This test only works for non-padded mechanisms
* when blocksize is 2^N.
*/
if ((plaintext->cd_length & (DES_BLOCK_LEN - 1)) != 0)
return (CRYPTO_DATA_LEN_RANGE);
ASSERT(ctx->cc_provider_private != NULL);
des_ctx = ctx->cc_provider_private;
DES_ARG_INPLACE(plaintext, ciphertext);
/*
* We need to just return the length needed to store the output.
* We should not destroy the context for the following case.
*/
if (ciphertext->cd_length < plaintext->cd_length) {
ciphertext->cd_length = plaintext->cd_length;
return (CRYPTO_BUFFER_TOO_SMALL);
}
/*
* Do an update on the specified input data.
*/
ret = des_encrypt_update(ctx, plaintext, ciphertext, req);
ASSERT(des_ctx->dc_remainder_len == 0);
(void) des_free_context(ctx);
/* EXPORT DELETE END */
/* LINTED */
return (ret);
}
/* ARGSUSED */
static int
des_decrypt(crypto_ctx_t *ctx, crypto_data_t *ciphertext,
crypto_data_t *plaintext, crypto_req_handle_t req)
{
int ret;
/* EXPORT DELETE START */
des_ctx_t *des_ctx;
/*
* Ciphertext must be a multiple of the block size.
* This test only works for non-padded mechanisms
* when blocksize is 2^N.
*/
if ((ciphertext->cd_length & (DES_BLOCK_LEN - 1)) != 0)
return (CRYPTO_ENCRYPTED_DATA_LEN_RANGE);
ASSERT(ctx->cc_provider_private != NULL);
des_ctx = ctx->cc_provider_private;
DES_ARG_INPLACE(ciphertext, plaintext);
/*
* We need to just return the length needed to store the output.
* We should not destroy the context for the following case.
*/
if (plaintext->cd_length < ciphertext->cd_length) {
plaintext->cd_length = ciphertext->cd_length;
return (CRYPTO_BUFFER_TOO_SMALL);
}
/*
* Do an update on the specified input data.
*/
ret = des_decrypt_update(ctx, ciphertext, plaintext, req);
ASSERT(des_ctx->dc_remainder_len == 0);
(void) des_free_context(ctx);
/* EXPORT DELETE END */
/* LINTED */
return (ret);
}
/* ARGSUSED */
static int
des_encrypt_update(crypto_ctx_t *ctx, crypto_data_t *plaintext,
crypto_data_t *ciphertext, crypto_req_handle_t req)
{
off_t saved_offset;
size_t saved_length, out_len;
int ret = CRYPTO_SUCCESS;
/* EXPORT DELETE START */
ASSERT(ctx->cc_provider_private != NULL);
DES_ARG_INPLACE(plaintext, ciphertext);
/* compute number of bytes that will hold the ciphertext */
out_len = ((des_ctx_t *)ctx->cc_provider_private)->dc_remainder_len;
out_len += plaintext->cd_length;
out_len &= ~(DES_BLOCK_LEN - 1);
/* return length needed to store the output */
if (ciphertext->cd_length < out_len) {
ciphertext->cd_length = out_len;
return (CRYPTO_BUFFER_TOO_SMALL);
}
saved_offset = ciphertext->cd_offset;
saved_length = ciphertext->cd_length;
/*
* Do the DES update on the specified input data.
*/
switch (plaintext->cd_format) {
case CRYPTO_DATA_RAW:
ret = crypto_update_iov(ctx->cc_provider_private,
plaintext, ciphertext, des_encrypt_contiguous_blocks,
des_copy_block64);
break;
case CRYPTO_DATA_UIO:
ret = crypto_update_uio(ctx->cc_provider_private,
plaintext, ciphertext, des_encrypt_contiguous_blocks,
des_copy_block64);
break;
case CRYPTO_DATA_MBLK:
ret = crypto_update_mp(ctx->cc_provider_private,
plaintext, ciphertext, des_encrypt_contiguous_blocks,
des_copy_block64);
break;
default:
ret = CRYPTO_ARGUMENTS_BAD;
}
if (ret == CRYPTO_SUCCESS) {
if (plaintext != ciphertext)
ciphertext->cd_length =
ciphertext->cd_offset - saved_offset;
} else {
ciphertext->cd_length = saved_length;
}
ciphertext->cd_offset = saved_offset;
/* EXPORT DELETE END */
return (ret);
}
/* ARGSUSED */
static int
des_decrypt_update(crypto_ctx_t *ctx, crypto_data_t *ciphertext,
crypto_data_t *plaintext, crypto_req_handle_t req)
{
off_t saved_offset;
size_t saved_length, out_len;
int ret = CRYPTO_SUCCESS;
/* EXPORT DELETE START */
ASSERT(ctx->cc_provider_private != NULL);
DES_ARG_INPLACE(ciphertext, plaintext);
/* compute number of bytes that will hold the plaintext */
out_len = ((des_ctx_t *)ctx->cc_provider_private)->dc_remainder_len;
out_len += ciphertext->cd_length;
out_len &= ~(DES_BLOCK_LEN - 1);
/* return length needed to store the output */
if (plaintext->cd_length < out_len) {
plaintext->cd_length = out_len;
return (CRYPTO_BUFFER_TOO_SMALL);
}
saved_offset = plaintext->cd_offset;
saved_length = plaintext->cd_length;
/*
* Do the DES update on the specified input data.
*/
switch (ciphertext->cd_format) {
case CRYPTO_DATA_RAW:
ret = crypto_update_iov(ctx->cc_provider_private,
ciphertext, plaintext, des_decrypt_contiguous_blocks,
des_copy_block64);
break;
case CRYPTO_DATA_UIO:
ret = crypto_update_uio(ctx->cc_provider_private,
ciphertext, plaintext, des_decrypt_contiguous_blocks,
des_copy_block64);
break;
case CRYPTO_DATA_MBLK:
ret = crypto_update_mp(ctx->cc_provider_private,
ciphertext, plaintext, des_decrypt_contiguous_blocks,
des_copy_block64);
break;
default:
ret = CRYPTO_ARGUMENTS_BAD;
}
if (ret == CRYPTO_SUCCESS) {
if (ciphertext != plaintext)
plaintext->cd_length =
plaintext->cd_offset - saved_offset;
} else {
plaintext->cd_length = saved_length;
}
plaintext->cd_offset = saved_offset;
/* EXPORT DELETE END */
return (ret);
}
/* ARGSUSED */
static int
des_encrypt_final(crypto_ctx_t *ctx, crypto_data_t *ciphertext,
crypto_req_handle_t req)
{
/* EXPORT DELETE START */
des_ctx_t *des_ctx;
ASSERT(ctx->cc_provider_private != NULL);
des_ctx = ctx->cc_provider_private;
/*
* There must be no unprocessed plaintext.
* This happens if the length of the last data is
* not a multiple of the DES block length.
*/
if (des_ctx->dc_remainder_len > 0)
return (CRYPTO_DATA_LEN_RANGE);
(void) des_free_context(ctx);
ciphertext->cd_length = 0;
/* EXPORT DELETE END */
return (CRYPTO_SUCCESS);
}
/* ARGSUSED */
static int
des_decrypt_final(crypto_ctx_t *ctx, crypto_data_t *plaintext,
crypto_req_handle_t req)
{
/* EXPORT DELETE START */
des_ctx_t *des_ctx;
ASSERT(ctx->cc_provider_private != NULL);
des_ctx = ctx->cc_provider_private;
/*
* There must be no unprocessed ciphertext.
* This happens if the length of the last ciphertext is
* not a multiple of the DES block length.
*/
if (des_ctx->dc_remainder_len > 0)
return (CRYPTO_ENCRYPTED_DATA_LEN_RANGE);
(void) des_free_context(ctx);
plaintext->cd_length = 0;
/* EXPORT DELETE END */
return (CRYPTO_SUCCESS);
}
/* ARGSUSED */
static int
des_encrypt_atomic(crypto_provider_handle_t provider,
crypto_session_id_t session_id, crypto_mechanism_t *mechanism,
crypto_key_t *key, crypto_data_t *plaintext, crypto_data_t *ciphertext,
crypto_spi_ctx_template_t template, crypto_req_handle_t req)
{
int ret;
/* EXPORT DELETE START */
des_ctx_t des_ctx; /* on the stack */
des_strength_t strength;
off_t saved_offset;
size_t saved_length;
DES_ARG_INPLACE(plaintext, ciphertext);
/*
* Plaintext must be a multiple of the block size.
* This test only works for non-padded mechanisms
* when blocksize is 2^N.
*/
if ((plaintext->cd_length & (DES_BLOCK_LEN - 1)) != 0)
return (CRYPTO_DATA_LEN_RANGE);
/* return length needed to store the output */
if (ciphertext->cd_length < plaintext->cd_length) {
ciphertext->cd_length = plaintext->cd_length;
return (CRYPTO_BUFFER_TOO_SMALL);
}
/* Check mechanism type and parameter length */
switch (mechanism->cm_type) {
case DES_ECB_MECH_INFO_TYPE:
case DES_CBC_MECH_INFO_TYPE:
if (mechanism->cm_param_len > 0 &&
mechanism->cm_param_len != DES_BLOCK_LEN)
return (CRYPTO_MECHANISM_PARAM_INVALID);
if (key->ck_length != DES_MINBITS)
return (CRYPTO_KEY_SIZE_RANGE);
strength = DES;
break;
case DES3_ECB_MECH_INFO_TYPE:
case DES3_CBC_MECH_INFO_TYPE:
if (mechanism->cm_param_len > 0 &&
mechanism->cm_param_len != DES_BLOCK_LEN)
return (CRYPTO_MECHANISM_PARAM_INVALID);
if (key->ck_length != DES3_MAXBITS)
return (CRYPTO_KEY_SIZE_RANGE);
strength = DES3;
break;
default:
return (CRYPTO_MECHANISM_INVALID);
}
bzero(&des_ctx, sizeof (des_ctx_t));
if ((ret = des_common_init_ctx(&des_ctx, template, mechanism, key,
strength, crypto_kmflag(req))) != CRYPTO_SUCCESS) {
return (ret);
}
saved_offset = ciphertext->cd_offset;
saved_length = ciphertext->cd_length;
/*
* Do the update on the specified input data.
*/
switch (plaintext->cd_format) {
case CRYPTO_DATA_RAW:
ret = crypto_update_iov(&des_ctx, plaintext, ciphertext,
des_encrypt_contiguous_blocks, des_copy_block64);
break;
case CRYPTO_DATA_UIO:
ret = crypto_update_uio(&des_ctx, plaintext, ciphertext,
des_encrypt_contiguous_blocks, des_copy_block64);
break;
case CRYPTO_DATA_MBLK:
ret = crypto_update_mp(&des_ctx, plaintext, ciphertext,
des_encrypt_contiguous_blocks, des_copy_block64);
break;
default:
ret = CRYPTO_ARGUMENTS_BAD;
}
if (des_ctx.dc_flags & PROVIDER_OWNS_KEY_SCHEDULE) {
bzero(des_ctx.dc_keysched, des_ctx.dc_keysched_len);
kmem_free(des_ctx.dc_keysched, des_ctx.dc_keysched_len);
}
if (ret == CRYPTO_SUCCESS) {
ASSERT(des_ctx.dc_remainder_len == 0);
if (plaintext != ciphertext)
ciphertext->cd_length =
ciphertext->cd_offset - saved_offset;
} else {
ciphertext->cd_length = saved_length;
}
ciphertext->cd_offset = saved_offset;
/* EXPORT DELETE END */
/* LINTED */
return (ret);
}
/* ARGSUSED */
static int
des_decrypt_atomic(crypto_provider_handle_t provider,
crypto_session_id_t session_id, crypto_mechanism_t *mechanism,
crypto_key_t *key, crypto_data_t *ciphertext, crypto_data_t *plaintext,
crypto_spi_ctx_template_t template, crypto_req_handle_t req)
{
int ret;
/* EXPORT DELETE START */
des_ctx_t des_ctx; /* on the stack */
des_strength_t strength;
off_t saved_offset;
size_t saved_length;
DES_ARG_INPLACE(ciphertext, plaintext);
/*
* Ciphertext must be a multiple of the block size.
* This test only works for non-padded mechanisms
* when blocksize is 2^N.
*/
if ((ciphertext->cd_length & (DES_BLOCK_LEN - 1)) != 0)
return (CRYPTO_DATA_LEN_RANGE);
/* return length needed to store the output */
if (plaintext->cd_length < ciphertext->cd_length) {
plaintext->cd_length = ciphertext->cd_length;
return (CRYPTO_BUFFER_TOO_SMALL);
}
/* Check mechanism type and parameter length */
switch (mechanism->cm_type) {
case DES_ECB_MECH_INFO_TYPE:
case DES_CBC_MECH_INFO_TYPE:
if (mechanism->cm_param_len > 0 &&
mechanism->cm_param_len != DES_BLOCK_LEN)
return (CRYPTO_MECHANISM_PARAM_INVALID);
if (key->ck_length != DES_MINBITS)
return (CRYPTO_KEY_SIZE_RANGE);
strength = DES;
break;
case DES3_ECB_MECH_INFO_TYPE:
case DES3_CBC_MECH_INFO_TYPE:
if (mechanism->cm_param_len > 0 &&
mechanism->cm_param_len != DES_BLOCK_LEN)
return (CRYPTO_MECHANISM_PARAM_INVALID);
if (key->ck_length != DES3_MAXBITS)
return (CRYPTO_KEY_SIZE_RANGE);
strength = DES3;
break;
default:
return (CRYPTO_MECHANISM_INVALID);
}
bzero(&des_ctx, sizeof (des_ctx_t));
if ((ret = des_common_init_ctx(&des_ctx, template, mechanism, key,
strength, crypto_kmflag(req))) != CRYPTO_SUCCESS) {
return (ret);
}
saved_offset = plaintext->cd_offset;
saved_length = plaintext->cd_length;
/*
* Do the update on the specified input data.
*/
switch (ciphertext->cd_format) {
case CRYPTO_DATA_RAW:
ret = crypto_update_iov(&des_ctx, ciphertext, plaintext,
des_decrypt_contiguous_blocks, des_copy_block64);
break;
case CRYPTO_DATA_UIO:
ret = crypto_update_uio(&des_ctx, ciphertext, plaintext,
des_decrypt_contiguous_blocks, des_copy_block64);
break;
case CRYPTO_DATA_MBLK:
ret = crypto_update_mp(&des_ctx, ciphertext, plaintext,
des_decrypt_contiguous_blocks, des_copy_block64);
break;
default:
ret = CRYPTO_ARGUMENTS_BAD;
}
if (des_ctx.dc_flags & PROVIDER_OWNS_KEY_SCHEDULE) {
bzero(des_ctx.dc_keysched, des_ctx.dc_keysched_len);
kmem_free(des_ctx.dc_keysched, des_ctx.dc_keysched_len);
}
if (ret == CRYPTO_SUCCESS) {
ASSERT(des_ctx.dc_remainder_len == 0);
if (ciphertext != plaintext)
plaintext->cd_length =
plaintext->cd_offset - saved_offset;
} else {
plaintext->cd_length = saved_length;
}
plaintext->cd_offset = saved_offset;
/* EXPORT DELETE END */
/* LINTED */
return (ret);
}
/*
* KCF software provider context template entry points.
*/
/* ARGSUSED */
static int
des_create_ctx_template(crypto_provider_handle_t provider,
crypto_mechanism_t *mechanism, crypto_key_t *key,
crypto_spi_ctx_template_t *tmpl, size_t *tmpl_size, crypto_req_handle_t req)
{
/* EXPORT DELETE START */
des_strength_t strength;
void *keysched;
size_t size;
int rv;
switch (mechanism->cm_type) {
case DES_ECB_MECH_INFO_TYPE:
strength = DES;
break;
case DES_CBC_MECH_INFO_TYPE:
strength = DES;
break;
case DES3_ECB_MECH_INFO_TYPE:
strength = DES3;
break;
case DES3_CBC_MECH_INFO_TYPE:
strength = DES3;
break;
default:
return (CRYPTO_MECHANISM_INVALID);
}
if ((keysched = des_alloc_keysched(&size, strength,
crypto_kmflag(req))) == NULL) {
return (CRYPTO_HOST_MEMORY);
}
/*
* Initialize key schedule. Key length information is stored
* in the key.
*/
if ((rv = init_keysched(key, keysched, strength)) != CRYPTO_SUCCESS) {
bzero(keysched, size);
kmem_free(keysched, size);
return (rv);
}
*tmpl = keysched;
*tmpl_size = size;
/* EXPORT DELETE END */
return (CRYPTO_SUCCESS);
}
/* ARGSUSED */
static int
des_free_context(crypto_ctx_t *ctx)
{
/* EXPORT DELETE START */
des_ctx_t *des_ctx = ctx->cc_provider_private;
if (des_ctx != NULL) {
if (des_ctx->dc_flags & PROVIDER_OWNS_KEY_SCHEDULE) {
ASSERT(des_ctx->dc_keysched_len != 0);
bzero(des_ctx->dc_keysched, des_ctx->dc_keysched_len);
kmem_free(des_ctx->dc_keysched,
des_ctx->dc_keysched_len);
}
crypto_free_mode_ctx(des_ctx);
ctx->cc_provider_private = NULL;
}
/* EXPORT DELETE END */
return (CRYPTO_SUCCESS);
}
/*
* Pass it to des_keycheck() which will
* fix it (parity bits), and check if the fixed key is weak.
*/
/* ARGSUSED */
static int
des_key_check(crypto_provider_handle_t pd, crypto_mechanism_t *mech,
crypto_key_t *key)
{
/* EXPORT DELETE START */
int expectedkeylen;
des_strength_t strength;
uint8_t keydata[DES3_MAX_KEY_LEN];
if ((mech == NULL) || (key == NULL))
return (CRYPTO_ARGUMENTS_BAD);
switch (mech->cm_type) {
case DES_ECB_MECH_INFO_TYPE:
case DES_CBC_MECH_INFO_TYPE:
expectedkeylen = DES_MINBITS;
strength = DES;
break;
case DES3_ECB_MECH_INFO_TYPE:
case DES3_CBC_MECH_INFO_TYPE:
expectedkeylen = DES3_MAXBITS;
strength = DES3;
break;
default:
return (CRYPTO_MECHANISM_INVALID);
}
if (key->ck_format != CRYPTO_KEY_RAW)
return (CRYPTO_KEY_TYPE_INCONSISTENT);
if (key->ck_length != expectedkeylen)
return (CRYPTO_KEY_SIZE_RANGE);
bcopy(key->ck_data, keydata, CRYPTO_BITS2BYTES(expectedkeylen));
if (des_keycheck(keydata, strength, key->ck_data) == B_FALSE)
return (CRYPTO_WEAK_KEY);
/* EXPORT DELETE END */
return (CRYPTO_SUCCESS);
}
/* ARGSUSED */
static int
des_common_init_ctx(des_ctx_t *des_ctx, crypto_spi_ctx_template_t *template,
crypto_mechanism_t *mechanism, crypto_key_t *key, des_strength_t strength,
int kmflag)
{
int rv = CRYPTO_SUCCESS;
/* EXPORT DELETE START */
void *keysched;
size_t size;
if (template == NULL) {
if ((keysched = des_alloc_keysched(&size, strength,
kmflag)) == NULL)
return (CRYPTO_HOST_MEMORY);
/*
* Initialize key schedule.
* Key length is stored in the key.
*/
if ((rv = init_keysched(key, keysched,
strength)) != CRYPTO_SUCCESS)
kmem_free(keysched, size);
des_ctx->dc_flags |= PROVIDER_OWNS_KEY_SCHEDULE;
des_ctx->dc_keysched_len = size;
} else {
keysched = template;
}
des_ctx->dc_keysched = keysched;
if (strength == DES3) {
des_ctx->dc_flags |= DES3_STRENGTH;
}
switch (mechanism->cm_type) {
case DES_CBC_MECH_INFO_TYPE:
case DES3_CBC_MECH_INFO_TYPE:
rv = cbc_init_ctx((cbc_ctx_t *)des_ctx, mechanism->cm_param,
mechanism->cm_param_len, DES_BLOCK_LEN, des_copy_block64);
break;
case DES_ECB_MECH_INFO_TYPE:
case DES3_ECB_MECH_INFO_TYPE:
des_ctx->dc_flags |= ECB_MODE;
}
if (rv != CRYPTO_SUCCESS) {
if (des_ctx->dc_flags & PROVIDER_OWNS_KEY_SCHEDULE) {
bzero(keysched, size);
kmem_free(keysched, size);
}
}
/* EXPORT DELETE END */
return (rv);
}
/*
* Triple DES Power-Up Self-Test
*/
void
des_POST(int *rc)
{
*rc = fips_des3_post();
}