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icp: remove skein module

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Nothing calls it through the KCF interface, so this is all unused.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
This commit is contained in:
Rob Norris 2024-05-19 15:00:00 +10:00 committed by Brian Behlendorf
parent f39241aeb3
commit ae512620d0
5 changed files with 0 additions and 522 deletions
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3
include/sys/crypto/icp.h
View File

@ -32,9 +32,6 @@ int aes_mod_fini(void);
int sha2_mod_init(void);
int sha2_mod_fini(void);
int skein_mod_init(void);
int skein_mod_fini(void);
int icp_init(void);
void icp_fini(void);

1
lib/libicp/Makefile.am
View File

@ -31,7 +31,6 @@ nodist_libicp_la_SOURCES = \
module/icp/illumos-crypto.c \
module/icp/io/aes.c \
module/icp/io/sha2_mod.c \
module/icp/io/skein_mod.c \
module/icp/core/kcf_sched.c \
module/icp/core/kcf_prov_lib.c \
module/icp/core/kcf_callprov.c \

1
module/Kbuild.in
View File

@ -122,7 +122,6 @@ ICP_OBJS := \
illumos-crypto.o \
io/aes.o \
io/sha2_mod.o \
io/skein_mod.o \
spi/kcf_spi.o
ICP_OBJS_X86_64 := \

2
module/icp/illumos-crypto.c
View File

@ -107,7 +107,6 @@
void
icp_fini(void)
{
skein_mod_fini();
sha2_mod_fini();
aes_mod_fini();
kcf_sched_destroy();
@ -134,7 +133,6 @@ icp_init(void)
/* initialize algorithms */
aes_mod_init();
sha2_mod_init();
skein_mod_init();
return (0);
}

515
module/icp/io/skein_mod.c
View File

@ -1,515 +0,0 @@
/*
* 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://opensource.org/licenses/CDDL-1.0.
* 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 2013 Saso Kiselkov. All rights reserved.
*/
#include <sys/crypto/common.h>
#include <sys/crypto/icp.h>
#include <sys/crypto/spi.h>
#include <sys/sysmacros.h>
#define SKEIN_MODULE_IMPL
#include <sys/skein.h>
static const crypto_mech_info_t skein_mech_info_tab[] = {
{CKM_SKEIN_256_MAC, SKEIN_256_MAC_MECH_INFO_TYPE,
CRYPTO_FG_MAC | CRYPTO_FG_MAC_ATOMIC},
{CKM_SKEIN_512_MAC, SKEIN_512_MAC_MECH_INFO_TYPE,
CRYPTO_FG_MAC | CRYPTO_FG_MAC_ATOMIC},
{CKM_SKEIN1024_MAC, SKEIN1024_MAC_MECH_INFO_TYPE,
CRYPTO_FG_MAC | CRYPTO_FG_MAC_ATOMIC},
};
static int skein_update(crypto_ctx_t *, crypto_data_t *);
static int skein_final(crypto_ctx_t *, crypto_data_t *);
static int skein_mac_init(crypto_ctx_t *, crypto_mechanism_t *, crypto_key_t *,
crypto_spi_ctx_template_t);
static int skein_mac_atomic(crypto_mechanism_t *, crypto_key_t *,
crypto_data_t *, crypto_data_t *, crypto_spi_ctx_template_t);
static const crypto_mac_ops_t skein_mac_ops = {
.mac_init = skein_mac_init,
.mac = NULL,
.mac_update = skein_update, /* using regular digest update is OK here */
.mac_final = skein_final, /* using regular digest final is OK here */
.mac_atomic = skein_mac_atomic,
.mac_verify_atomic = NULL
};
static int skein_create_ctx_template(crypto_mechanism_t *, crypto_key_t *,
crypto_spi_ctx_template_t *, size_t *);
static int skein_free_context(crypto_ctx_t *);
static const crypto_ctx_ops_t skein_ctx_ops = {
.create_ctx_template = skein_create_ctx_template,
.free_context = skein_free_context
};
static const crypto_ops_t skein_crypto_ops = {
NULL,
&skein_mac_ops,
&skein_ctx_ops,
};
static const crypto_provider_info_t skein_prov_info = {
"Skein Software Provider",
&skein_crypto_ops,
sizeof (skein_mech_info_tab) / sizeof (crypto_mech_info_t),
skein_mech_info_tab
};
static crypto_kcf_provider_handle_t skein_prov_handle = 0;
typedef struct skein_ctx {
skein_mech_type_t sc_mech_type;
size_t sc_digest_bitlen;
/*LINTED(E_ANONYMOUS_UNION_DECL)*/
union {
Skein_256_Ctxt_t sc_256;
Skein_512_Ctxt_t sc_512;
Skein1024_Ctxt_t sc_1024;
};
} skein_ctx_t;
#define SKEIN_CTX(_ctx_) ((skein_ctx_t *)((_ctx_)->cc_provider_private))
#define SKEIN_CTX_LVALUE(_ctx_) (_ctx_)->cc_provider_private
#define SKEIN_OP(_skein_ctx, _op, ...) \
do { \
skein_ctx_t *sc = (_skein_ctx); \
switch (sc->sc_mech_type) { \
case SKEIN_256_MAC_MECH_INFO_TYPE: \
(void) Skein_256_ ## _op(&sc->sc_256, __VA_ARGS__);\
break; \
case SKEIN_512_MAC_MECH_INFO_TYPE: \
(void) Skein_512_ ## _op(&sc->sc_512, __VA_ARGS__);\
break; \
case SKEIN1024_MAC_MECH_INFO_TYPE: \
(void) Skein1024_ ## _op(&sc->sc_1024, __VA_ARGS__);\
break; \
} \
} while (0)
static int
skein_get_digest_bitlen(const crypto_mechanism_t *mechanism, size_t *result)
{
if (mechanism->cm_param != NULL) {
/*LINTED(E_BAD_PTR_CAST_ALIGN)*/
skein_param_t *param = (skein_param_t *)mechanism->cm_param;
if (mechanism->cm_param_len != sizeof (*param) ||
param->sp_digest_bitlen == 0) {
return (CRYPTO_MECHANISM_PARAM_INVALID);
}
*result = param->sp_digest_bitlen;
} else {
return (CRYPTO_MECHANISM_INVALID);
}
return (CRYPTO_SUCCESS);
}
int
skein_mod_init(void)
{
/*
* Try to register with KCF - failure shouldn't unload us, since we
* still may want to continue providing misc/skein functionality.
*/
(void) crypto_register_provider(&skein_prov_info, &skein_prov_handle);
return (0);
}
int
skein_mod_fini(void)
{
int ret = 0;
if (skein_prov_handle != 0) {
if ((ret = crypto_unregister_provider(skein_prov_handle)) !=
CRYPTO_SUCCESS) {
cmn_err(CE_WARN,
"skein _fini: crypto_unregister_provider() "
"failed (0x%x)", ret);
return (EBUSY);
}
skein_prov_handle = 0;
}
return (0);
}
/*
* General Skein hashing helper functions.
*/
/*
* Performs an Update on a context with uio input data.
*/
static int
skein_digest_update_uio(skein_ctx_t *ctx, const crypto_data_t *data)
{
off_t offset = data->cd_offset;
size_t length = data->cd_length;
uint_t vec_idx = 0;
size_t cur_len;
zfs_uio_t *uio = data->cd_uio;
/* we support only kernel buffer */
if (zfs_uio_segflg(uio) != UIO_SYSSPACE)
return (CRYPTO_ARGUMENTS_BAD);
/*
* Jump to the first iovec containing data to be
* digested.
*/
offset = zfs_uio_index_at_offset(uio, offset, &vec_idx);
if (vec_idx == zfs_uio_iovcnt(uio)) {
/*
* The caller specified an offset that is larger than the
* total size of the buffers it provided.
*/
return (CRYPTO_DATA_LEN_RANGE);
}
/*
* Now do the digesting on the iovecs.
*/
while (vec_idx < zfs_uio_iovcnt(uio) && length > 0) {
cur_len = MIN(zfs_uio_iovlen(uio, vec_idx) - offset, length);
SKEIN_OP(ctx, Update, (uint8_t *)zfs_uio_iovbase(uio, vec_idx)
+ offset, cur_len);
length -= cur_len;
vec_idx++;
offset = 0;
}
if (vec_idx == zfs_uio_iovcnt(uio) && length > 0) {
/*
* The end of the specified iovec's was reached but
* the length requested could not be processed, i.e.
* The caller requested to digest more data than it provided.
*/
return (CRYPTO_DATA_LEN_RANGE);
}
return (CRYPTO_SUCCESS);
}
/*
* Performs a Final on a context and writes to a uio digest output.
*/
static int
skein_digest_final_uio(skein_ctx_t *ctx, crypto_data_t *digest)
{
off_t offset = digest->cd_offset;
uint_t vec_idx = 0;
zfs_uio_t *uio = digest->cd_uio;
/* we support only kernel buffer */
if (zfs_uio_segflg(uio) != UIO_SYSSPACE)
return (CRYPTO_ARGUMENTS_BAD);
/*
* Jump to the first iovec containing ptr to the digest to be returned.
*/
offset = zfs_uio_index_at_offset(uio, offset, &vec_idx);
if (vec_idx == zfs_uio_iovcnt(uio)) {
/*
* The caller specified an offset that is larger than the
* total size of the buffers it provided.
*/
return (CRYPTO_DATA_LEN_RANGE);
}
if (offset + CRYPTO_BITS2BYTES(ctx->sc_digest_bitlen) <=
zfs_uio_iovlen(uio, vec_idx)) {
/* The computed digest will fit in the current iovec. */
SKEIN_OP(ctx, Final,
(uchar_t *)zfs_uio_iovbase(uio, vec_idx) + offset);
} else {
uint8_t *digest_tmp;
off_t scratch_offset = 0;
size_t length = CRYPTO_BITS2BYTES(ctx->sc_digest_bitlen);
size_t cur_len;
digest_tmp = kmem_alloc(CRYPTO_BITS2BYTES(
ctx->sc_digest_bitlen), KM_SLEEP);
if (digest_tmp == NULL)
return (CRYPTO_HOST_MEMORY);
SKEIN_OP(ctx, Final, digest_tmp);
while (vec_idx < zfs_uio_iovcnt(uio) && length > 0) {
cur_len = MIN(zfs_uio_iovlen(uio, vec_idx) - offset,
length);
memcpy(zfs_uio_iovbase(uio, vec_idx) + offset,
digest_tmp + scratch_offset, cur_len);
length -= cur_len;
vec_idx++;
scratch_offset += cur_len;
offset = 0;
}
kmem_free(digest_tmp, CRYPTO_BITS2BYTES(ctx->sc_digest_bitlen));
if (vec_idx == zfs_uio_iovcnt(uio) && length > 0) {
/*
* The end of the specified iovec's was reached but
* the length requested could not be processed, i.e.
* The caller requested to digest more data than it
* provided.
*/
return (CRYPTO_DATA_LEN_RANGE);
}
}
return (CRYPTO_SUCCESS);
}
/*
* KCF software provider digest entry points.
*/
/*
* Performs a skein Update with the input message in `data' (successive calls
* can push more data). This is used both for digest and MAC operation.
* Supported input data formats are raw, uio and mblk.
*/
static int
skein_update(crypto_ctx_t *ctx, crypto_data_t *data)
{
int error = CRYPTO_SUCCESS;
ASSERT(SKEIN_CTX(ctx) != NULL);
switch (data->cd_format) {
case CRYPTO_DATA_RAW:
SKEIN_OP(SKEIN_CTX(ctx), Update,
(uint8_t *)data->cd_raw.iov_base + data->cd_offset,
data->cd_length);
break;
case CRYPTO_DATA_UIO:
error = skein_digest_update_uio(SKEIN_CTX(ctx), data);
break;
default:
error = CRYPTO_ARGUMENTS_BAD;
}
return (error);
}
/*
* Performs a skein Final, writing the output to `digest'. This is used both
* for digest and MAC operation.
* Supported output digest formats are raw, uio and mblk.
*/
static int
skein_final_nofree(crypto_ctx_t *ctx, crypto_data_t *digest)
{
int error = CRYPTO_SUCCESS;
ASSERT(SKEIN_CTX(ctx) != NULL);
if (digest->cd_length <
CRYPTO_BITS2BYTES(SKEIN_CTX(ctx)->sc_digest_bitlen)) {
digest->cd_length =
CRYPTO_BITS2BYTES(SKEIN_CTX(ctx)->sc_digest_bitlen);
return (CRYPTO_BUFFER_TOO_SMALL);
}
switch (digest->cd_format) {
case CRYPTO_DATA_RAW:
SKEIN_OP(SKEIN_CTX(ctx), Final,
(uint8_t *)digest->cd_raw.iov_base + digest->cd_offset);
break;
case CRYPTO_DATA_UIO:
error = skein_digest_final_uio(SKEIN_CTX(ctx), digest);
break;
default:
error = CRYPTO_ARGUMENTS_BAD;
}
if (error == CRYPTO_SUCCESS)
digest->cd_length =
CRYPTO_BITS2BYTES(SKEIN_CTX(ctx)->sc_digest_bitlen);
else
digest->cd_length = 0;
return (error);
}
static int
skein_final(crypto_ctx_t *ctx, crypto_data_t *digest)
{
int error = skein_final_nofree(ctx, digest);
if (error == CRYPTO_BUFFER_TOO_SMALL)
return (error);
memset(SKEIN_CTX(ctx), 0, sizeof (*SKEIN_CTX(ctx)));
kmem_free(SKEIN_CTX(ctx), sizeof (*(SKEIN_CTX(ctx))));
SKEIN_CTX_LVALUE(ctx) = NULL;
return (error);
}
/*
* Helper function that builds a Skein MAC context from the provided
* mechanism and key.
*/
static int
skein_mac_ctx_build(skein_ctx_t *ctx, crypto_mechanism_t *mechanism,
crypto_key_t *key)
{
int error;
if (!VALID_SKEIN_MAC_MECH(mechanism->cm_type))
return (CRYPTO_MECHANISM_INVALID);
ctx->sc_mech_type = mechanism->cm_type;
error = skein_get_digest_bitlen(mechanism, &ctx->sc_digest_bitlen);
if (error != CRYPTO_SUCCESS)
return (error);
SKEIN_OP(ctx, InitExt, ctx->sc_digest_bitlen, 0, key->ck_data,
CRYPTO_BITS2BYTES(key->ck_length));
return (CRYPTO_SUCCESS);
}
/*
* KCF software provide mac entry points.
*/
/*
* Initializes a skein MAC context. You may pass a ctx_template, in which
* case the template will be reused to make initialization more efficient.
* Otherwise a new context will be constructed. The mechanism cm_type must
* be one of SKEIN_*_MAC_MECH_INFO_TYPE. Same as in skein_digest_init, you
* may pass a skein_param_t in cm_param to configure the length of the
* digest. The key must be in raw format.
*/
static int
skein_mac_init(crypto_ctx_t *ctx, crypto_mechanism_t *mechanism,
crypto_key_t *key, crypto_spi_ctx_template_t ctx_template)
{
int error;
SKEIN_CTX_LVALUE(ctx) = kmem_alloc(sizeof (*SKEIN_CTX(ctx)), KM_SLEEP);
if (SKEIN_CTX(ctx) == NULL)
return (CRYPTO_HOST_MEMORY);
if (ctx_template != NULL) {
memcpy(SKEIN_CTX(ctx), ctx_template,
sizeof (*SKEIN_CTX(ctx)));
} else {
error = skein_mac_ctx_build(SKEIN_CTX(ctx), mechanism, key);
if (error != CRYPTO_SUCCESS)
goto errout;
}
return (CRYPTO_SUCCESS);
errout:
memset(SKEIN_CTX(ctx), 0, sizeof (*SKEIN_CTX(ctx)));
kmem_free(SKEIN_CTX(ctx), sizeof (*SKEIN_CTX(ctx)));
return (error);
}
/*
* The MAC update and final calls are reused from the regular digest code.
*/
/*
* Same as skein_digest_atomic, performs an atomic Skein MAC operation in
* one step. All the same properties apply to the arguments of this
* function as to those of the partial operations above.
*/
static int
skein_mac_atomic(crypto_mechanism_t *mechanism,
crypto_key_t *key, crypto_data_t *data, crypto_data_t *mac,
crypto_spi_ctx_template_t ctx_template)
{
/* faux crypto context just for skein_digest_{update,final} */
int error;
crypto_ctx_t ctx;
skein_ctx_t skein_ctx;
SKEIN_CTX_LVALUE(&ctx) = &skein_ctx;
if (ctx_template != NULL) {
memcpy(&skein_ctx, ctx_template, sizeof (skein_ctx));
} else {
error = skein_mac_ctx_build(&skein_ctx, mechanism, key);
if (error != CRYPTO_SUCCESS)
goto errout;
}
if ((error = skein_update(&ctx, data)) != CRYPTO_SUCCESS)
goto errout;
if ((error = skein_final_nofree(&ctx, mac)) != CRYPTO_SUCCESS)
goto errout;
return (CRYPTO_SUCCESS);
errout:
memset(&skein_ctx, 0, sizeof (skein_ctx));
return (error);
}
/*
* KCF software provider context management entry points.
*/
/*
* Constructs a context template for the Skein MAC algorithm. The same
* properties apply to the arguments of this function as to those of
* skein_mac_init.
*/
static int
skein_create_ctx_template(crypto_mechanism_t *mechanism, crypto_key_t *key,
crypto_spi_ctx_template_t *ctx_template, size_t *ctx_template_size)
{
int error;
skein_ctx_t *ctx_tmpl;
ctx_tmpl = kmem_alloc(sizeof (*ctx_tmpl), KM_SLEEP);
if (ctx_tmpl == NULL)
return (CRYPTO_HOST_MEMORY);
error = skein_mac_ctx_build(ctx_tmpl, mechanism, key);
if (error != CRYPTO_SUCCESS)
goto errout;
*ctx_template = ctx_tmpl;
*ctx_template_size = sizeof (*ctx_tmpl);
return (CRYPTO_SUCCESS);
errout:
memset(ctx_tmpl, 0, sizeof (*ctx_tmpl));
kmem_free(ctx_tmpl, sizeof (*ctx_tmpl));
return (error);
}
/*
* Frees a skein context in a parent crypto context.
*/
static int
skein_free_context(crypto_ctx_t *ctx)
{
if (SKEIN_CTX(ctx) != NULL) {
memset(SKEIN_CTX(ctx), 0, sizeof (*SKEIN_CTX(ctx)));
kmem_free(SKEIN_CTX(ctx), sizeof (*SKEIN_CTX(ctx)));
SKEIN_CTX_LVALUE(ctx) = NULL;
}
return (CRYPTO_SUCCESS);
}