Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/crypto/rsa.c b/crypto/rsa.c
index 4167980..4cdbec9 100644
--- a/crypto/rsa.c
+++ b/crypto/rsa.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/* RSA asymmetric public-key algorithm [RFC3447]
*
* Copyright (c) 2015, Intel Corporation
* Authors: Tadeusz Struk <tadeusz.struk@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
*/
#include <linux/module.h>
@@ -50,34 +46,6 @@
return mpi_powm(m, c, key->d, key->n);
}
-/*
- * RSASP1 function [RFC3447 sec 5.2.1]
- * s = m^d mod n
- */
-static int _rsa_sign(const struct rsa_mpi_key *key, MPI s, MPI m)
-{
- /* (1) Validate 0 <= m < n */
- if (mpi_cmp_ui(m, 0) < 0 || mpi_cmp(m, key->n) >= 0)
- return -EINVAL;
-
- /* (2) s = m^d mod n */
- return mpi_powm(s, m, key->d, key->n);
-}
-
-/*
- * RSAVP1 function [RFC3447 sec 5.2.2]
- * m = s^e mod n;
- */
-static int _rsa_verify(const struct rsa_mpi_key *key, MPI m, MPI s)
-{
- /* (1) Validate 0 <= s < n */
- if (mpi_cmp_ui(s, 0) < 0 || mpi_cmp(s, key->n) >= 0)
- return -EINVAL;
-
- /* (2) m = s^e mod n */
- return mpi_powm(m, s, key->e, key->n);
-}
-
static inline struct rsa_mpi_key *rsa_get_key(struct crypto_akcipher *tfm)
{
return akcipher_tfm_ctx(tfm);
@@ -160,85 +128,6 @@
return ret;
}
-static int rsa_sign(struct akcipher_request *req)
-{
- struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
- const struct rsa_mpi_key *pkey = rsa_get_key(tfm);
- MPI m, s = mpi_alloc(0);
- int ret = 0;
- int sign;
-
- if (!s)
- return -ENOMEM;
-
- if (unlikely(!pkey->n || !pkey->d)) {
- ret = -EINVAL;
- goto err_free_s;
- }
-
- ret = -ENOMEM;
- m = mpi_read_raw_from_sgl(req->src, req->src_len);
- if (!m)
- goto err_free_s;
-
- ret = _rsa_sign(pkey, s, m);
- if (ret)
- goto err_free_m;
-
- ret = mpi_write_to_sgl(s, req->dst, req->dst_len, &sign);
- if (ret)
- goto err_free_m;
-
- if (sign < 0)
- ret = -EBADMSG;
-
-err_free_m:
- mpi_free(m);
-err_free_s:
- mpi_free(s);
- return ret;
-}
-
-static int rsa_verify(struct akcipher_request *req)
-{
- struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
- const struct rsa_mpi_key *pkey = rsa_get_key(tfm);
- MPI s, m = mpi_alloc(0);
- int ret = 0;
- int sign;
-
- if (!m)
- return -ENOMEM;
-
- if (unlikely(!pkey->n || !pkey->e)) {
- ret = -EINVAL;
- goto err_free_m;
- }
-
- s = mpi_read_raw_from_sgl(req->src, req->src_len);
- if (!s) {
- ret = -ENOMEM;
- goto err_free_m;
- }
-
- ret = _rsa_verify(pkey, m, s);
- if (ret)
- goto err_free_s;
-
- ret = mpi_write_to_sgl(m, req->dst, req->dst_len, &sign);
- if (ret)
- goto err_free_s;
-
- if (sign < 0)
- ret = -EBADMSG;
-
-err_free_s:
- mpi_free(s);
-err_free_m:
- mpi_free(m);
- return ret;
-}
-
static void rsa_free_mpi_key(struct rsa_mpi_key *key)
{
mpi_free(key->d);
@@ -353,8 +242,6 @@
static struct akcipher_alg rsa = {
.encrypt = rsa_enc,
.decrypt = rsa_dec,
- .sign = rsa_sign,
- .verify = rsa_verify,
.set_priv_key = rsa_set_priv_key,
.set_pub_key = rsa_set_pub_key,
.max_size = rsa_max_size,
@@ -391,7 +278,7 @@
crypto_unregister_akcipher(&rsa);
}
-module_init(rsa_init);
+subsys_initcall(rsa_init);
module_exit(rsa_exit);
MODULE_ALIAS_CRYPTO("rsa");
MODULE_LICENSE("GPL");