From a36159eec6ca17402b0e146b86efaf76568dc353 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 20 Sep 2024 01:41:23 +0000
Subject: [PATCH] 重命名 AX88772C_eeprom/asix.c 为 asix_mac.c
---
kernel/crypto/asymmetric_keys/public_key.c | 361 +++++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 303 insertions(+), 58 deletions(-)
diff --git a/kernel/crypto/asymmetric_keys/public_key.c b/kernel/crypto/asymmetric_keys/public_key.c
index e929fe1..bd713a2 100644
--- a/kernel/crypto/asymmetric_keys/public_key.c
+++ b/kernel/crypto/asymmetric_keys/public_key.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/* In-software asymmetric public-key crypto subtype
*
- * See Documentation/crypto/asymmetric-keys.txt
+ * See Documentation/crypto/asymmetric-keys.rst
*
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.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.
*/
#define pr_fmt(fmt) "PKEY: "fmt
@@ -21,6 +17,8 @@
#include <keys/asymmetric-subtype.h>
#include <crypto/public_key.h>
#include <crypto/akcipher.h>
+#include <crypto/sm2.h>
+#include <crypto/sm3_base.h>
MODULE_DESCRIPTION("In-software asymmetric public-key subtype");
MODULE_AUTHOR("Red Hat, Inc.");
@@ -45,6 +43,7 @@
{
if (key) {
kfree(key->key);
+ kfree(key->params);
kfree(key);
}
}
@@ -60,42 +59,129 @@
}
/*
- * Verify a signature using a public key.
+ * Determine the crypto algorithm name.
*/
-int public_key_verify_signature(const struct public_key *pkey,
- const struct public_key_signature *sig)
+static
+int software_key_determine_akcipher(const char *encoding,
+ const char *hash_algo,
+ const struct public_key *pkey,
+ char alg_name[CRYPTO_MAX_ALG_NAME])
{
- struct crypto_wait cwait;
- struct crypto_akcipher *tfm;
- struct akcipher_request *req;
- struct scatterlist sig_sg, digest_sg;
- const char *alg_name;
- char alg_name_buf[CRYPTO_MAX_ALG_NAME];
- void *output;
- unsigned int outlen;
- int ret;
+ int n;
- pr_devel("==>%s()\n", __func__);
-
- BUG_ON(!pkey);
- BUG_ON(!sig);
- BUG_ON(!sig->s);
-
- if (!sig->digest)
- return -ENOPKG;
-
- alg_name = sig->pkey_algo;
- if (strcmp(sig->pkey_algo, "rsa") == 0) {
+ if (strcmp(encoding, "pkcs1") == 0) {
/* The data wangled by the RSA algorithm is typically padded
* and encoded in some manner, such as EMSA-PKCS1-1_5 [RFC3447
* sec 8.2].
*/
- if (snprintf(alg_name_buf, CRYPTO_MAX_ALG_NAME,
- "pkcs1pad(rsa,%s)", sig->hash_algo
- ) >= CRYPTO_MAX_ALG_NAME)
- return -EINVAL;
- alg_name = alg_name_buf;
+ if (!hash_algo)
+ n = snprintf(alg_name, CRYPTO_MAX_ALG_NAME,
+ "pkcs1pad(%s)",
+ pkey->pkey_algo);
+ else
+ n = snprintf(alg_name, CRYPTO_MAX_ALG_NAME,
+ "pkcs1pad(%s,%s)",
+ pkey->pkey_algo, hash_algo);
+ return n >= CRYPTO_MAX_ALG_NAME ? -EINVAL : 0;
}
+
+ if (strcmp(encoding, "raw") == 0) {
+ strcpy(alg_name, pkey->pkey_algo);
+ return 0;
+ }
+
+ return -ENOPKG;
+}
+
+static u8 *pkey_pack_u32(u8 *dst, u32 val)
+{
+ memcpy(dst, &val, sizeof(val));
+ return dst + sizeof(val);
+}
+
+/*
+ * Query information about a key.
+ */
+static int software_key_query(const struct kernel_pkey_params *params,
+ struct kernel_pkey_query *info)
+{
+ struct crypto_akcipher *tfm;
+ struct public_key *pkey = params->key->payload.data[asym_crypto];
+ char alg_name[CRYPTO_MAX_ALG_NAME];
+ u8 *key, *ptr;
+ int ret, len;
+
+ ret = software_key_determine_akcipher(params->encoding,
+ params->hash_algo,
+ pkey, alg_name);
+ if (ret < 0)
+ return ret;
+
+ tfm = crypto_alloc_akcipher(alg_name, 0, 0);
+ if (IS_ERR(tfm))
+ return PTR_ERR(tfm);
+
+ ret = -ENOMEM;
+ key = kmalloc(pkey->keylen + sizeof(u32) * 2 + pkey->paramlen,
+ GFP_KERNEL);
+ if (!key)
+ goto error_free_tfm;
+ memcpy(key, pkey->key, pkey->keylen);
+ ptr = key + pkey->keylen;
+ ptr = pkey_pack_u32(ptr, pkey->algo);
+ ptr = pkey_pack_u32(ptr, pkey->paramlen);
+ memcpy(ptr, pkey->params, pkey->paramlen);
+
+ if (pkey->key_is_private)
+ ret = crypto_akcipher_set_priv_key(tfm, key, pkey->keylen);
+ else
+ ret = crypto_akcipher_set_pub_key(tfm, key, pkey->keylen);
+ if (ret < 0)
+ goto error_free_key;
+
+ len = crypto_akcipher_maxsize(tfm);
+ info->key_size = len * 8;
+ info->max_data_size = len;
+ info->max_sig_size = len;
+ info->max_enc_size = len;
+ info->max_dec_size = len;
+ info->supported_ops = (KEYCTL_SUPPORTS_ENCRYPT |
+ KEYCTL_SUPPORTS_VERIFY);
+ if (pkey->key_is_private)
+ info->supported_ops |= (KEYCTL_SUPPORTS_DECRYPT |
+ KEYCTL_SUPPORTS_SIGN);
+ ret = 0;
+
+error_free_key:
+ kfree(key);
+error_free_tfm:
+ crypto_free_akcipher(tfm);
+ pr_devel("<==%s() = %d\n", __func__, ret);
+ return ret;
+}
+
+/*
+ * Do encryption, decryption and signing ops.
+ */
+static int software_key_eds_op(struct kernel_pkey_params *params,
+ const void *in, void *out)
+{
+ const struct public_key *pkey = params->key->payload.data[asym_crypto];
+ struct akcipher_request *req;
+ struct crypto_akcipher *tfm;
+ struct crypto_wait cwait;
+ struct scatterlist in_sg, out_sg;
+ char alg_name[CRYPTO_MAX_ALG_NAME];
+ char *key, *ptr;
+ int ret;
+
+ pr_devel("==>%s()\n", __func__);
+
+ ret = software_key_determine_akcipher(params->encoding,
+ params->hash_algo,
+ pkey, alg_name);
+ if (ret < 0)
+ return ret;
tfm = crypto_alloc_akcipher(alg_name, 0, 0);
if (IS_ERR(tfm))
@@ -106,40 +192,197 @@
if (!req)
goto error_free_tfm;
- ret = crypto_akcipher_set_pub_key(tfm, pkey->key, pkey->keylen);
+ key = kmalloc(pkey->keylen + sizeof(u32) * 2 + pkey->paramlen,
+ GFP_KERNEL);
+ if (!key)
+ goto error_free_req;
+
+ memcpy(key, pkey->key, pkey->keylen);
+ ptr = key + pkey->keylen;
+ ptr = pkey_pack_u32(ptr, pkey->algo);
+ ptr = pkey_pack_u32(ptr, pkey->paramlen);
+ memcpy(ptr, pkey->params, pkey->paramlen);
+
+ if (pkey->key_is_private)
+ ret = crypto_akcipher_set_priv_key(tfm, key, pkey->keylen);
+ else
+ ret = crypto_akcipher_set_pub_key(tfm, key, pkey->keylen);
if (ret)
- goto error_free_req;
+ goto error_free_key;
- ret = -ENOMEM;
- outlen = crypto_akcipher_maxsize(tfm);
- output = kmalloc(outlen, GFP_KERNEL);
- if (!output)
- goto error_free_req;
-
- sg_init_one(&sig_sg, sig->s, sig->s_size);
- sg_init_one(&digest_sg, output, outlen);
- akcipher_request_set_crypt(req, &sig_sg, &digest_sg, sig->s_size,
- outlen);
+ sg_init_one(&in_sg, in, params->in_len);
+ sg_init_one(&out_sg, out, params->out_len);
+ akcipher_request_set_crypt(req, &in_sg, &out_sg, params->in_len,
+ params->out_len);
crypto_init_wait(&cwait);
akcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG |
CRYPTO_TFM_REQ_MAY_SLEEP,
crypto_req_done, &cwait);
- /* Perform the verification calculation. This doesn't actually do the
- * verification, but rather calculates the hash expected by the
- * signature and returns that to us.
- */
- ret = crypto_wait_req(crypto_akcipher_verify(req), &cwait);
+ /* Perform the encryption calculation. */
+ switch (params->op) {
+ case kernel_pkey_encrypt:
+ ret = crypto_akcipher_encrypt(req);
+ break;
+ case kernel_pkey_decrypt:
+ ret = crypto_akcipher_decrypt(req);
+ break;
+ case kernel_pkey_sign:
+ ret = crypto_akcipher_sign(req);
+ break;
+ default:
+ BUG();
+ }
+
+ ret = crypto_wait_req(ret, &cwait);
+ if (ret == 0)
+ ret = req->dst_len;
+
+error_free_key:
+ kfree(key);
+error_free_req:
+ akcipher_request_free(req);
+error_free_tfm:
+ crypto_free_akcipher(tfm);
+ pr_devel("<==%s() = %d\n", __func__, ret);
+ return ret;
+}
+
+#if IS_REACHABLE(CONFIG_CRYPTO_SM2)
+static int cert_sig_digest_update(const struct public_key_signature *sig,
+ struct crypto_akcipher *tfm_pkey)
+{
+ struct crypto_shash *tfm;
+ struct shash_desc *desc;
+ size_t desc_size;
+ unsigned char dgst[SM3_DIGEST_SIZE];
+ int ret;
+
+ BUG_ON(!sig->data);
+
+ /* SM2 signatures always use the SM3 hash algorithm */
+ if (!sig->hash_algo || strcmp(sig->hash_algo, "sm3") != 0)
+ return -EINVAL;
+
+ ret = sm2_compute_z_digest(tfm_pkey, SM2_DEFAULT_USERID,
+ SM2_DEFAULT_USERID_LEN, dgst);
if (ret)
- goto out_free_output;
+ return ret;
- /* Do the actual verification step. */
- if (req->dst_len != sig->digest_size ||
- memcmp(sig->digest, output, sig->digest_size) != 0)
- ret = -EKEYREJECTED;
+ tfm = crypto_alloc_shash(sig->hash_algo, 0, 0);
+ if (IS_ERR(tfm))
+ return PTR_ERR(tfm);
-out_free_output:
- kfree(output);
+ desc_size = crypto_shash_descsize(tfm) + sizeof(*desc);
+ desc = kzalloc(desc_size, GFP_KERNEL);
+ if (!desc) {
+ ret = -ENOMEM;
+ goto error_free_tfm;
+ }
+
+ desc->tfm = tfm;
+
+ ret = crypto_shash_init(desc);
+ if (ret < 0)
+ goto error_free_desc;
+
+ ret = crypto_shash_update(desc, dgst, SM3_DIGEST_SIZE);
+ if (ret < 0)
+ goto error_free_desc;
+
+ ret = crypto_shash_finup(desc, sig->data, sig->data_size, sig->digest);
+
+error_free_desc:
+ kfree(desc);
+error_free_tfm:
+ crypto_free_shash(tfm);
+ return ret;
+}
+#else
+static inline int cert_sig_digest_update(
+ const struct public_key_signature *sig,
+ struct crypto_akcipher *tfm_pkey)
+{
+ return -ENOTSUPP;
+}
+#endif /* ! IS_REACHABLE(CONFIG_CRYPTO_SM2) */
+
+/*
+ * Verify a signature using a public key.
+ */
+int public_key_verify_signature(const struct public_key *pkey,
+ const struct public_key_signature *sig)
+{
+ struct crypto_wait cwait;
+ struct crypto_akcipher *tfm;
+ struct akcipher_request *req;
+ struct scatterlist src_sg;
+ char alg_name[CRYPTO_MAX_ALG_NAME];
+ char *buf, *ptr;
+ size_t buf_len;
+ int ret;
+
+ pr_devel("==>%s()\n", __func__);
+
+ BUG_ON(!pkey);
+ BUG_ON(!sig);
+ BUG_ON(!sig->s);
+
+ ret = software_key_determine_akcipher(sig->encoding,
+ sig->hash_algo,
+ pkey, alg_name);
+ if (ret < 0)
+ return ret;
+
+ tfm = crypto_alloc_akcipher(alg_name, 0, 0);
+ if (IS_ERR(tfm))
+ return PTR_ERR(tfm);
+
+ ret = -ENOMEM;
+ req = akcipher_request_alloc(tfm, GFP_KERNEL);
+ if (!req)
+ goto error_free_tfm;
+
+ buf_len = max_t(size_t, pkey->keylen + sizeof(u32) * 2 + pkey->paramlen,
+ sig->s_size + sig->digest_size);
+
+ buf = kmalloc(buf_len, GFP_KERNEL);
+ if (!buf)
+ goto error_free_req;
+
+ memcpy(buf, pkey->key, pkey->keylen);
+ ptr = buf + pkey->keylen;
+ ptr = pkey_pack_u32(ptr, pkey->algo);
+ ptr = pkey_pack_u32(ptr, pkey->paramlen);
+ memcpy(ptr, pkey->params, pkey->paramlen);
+
+ if (pkey->key_is_private)
+ ret = crypto_akcipher_set_priv_key(tfm, buf, pkey->keylen);
+ else
+ ret = crypto_akcipher_set_pub_key(tfm, buf, pkey->keylen);
+ if (ret)
+ goto error_free_buf;
+
+ if (strcmp(pkey->pkey_algo, "sm2") == 0 && sig->data_size) {
+ ret = cert_sig_digest_update(sig, tfm);
+ if (ret)
+ goto error_free_buf;
+ }
+
+ memcpy(buf, sig->s, sig->s_size);
+ memcpy(buf + sig->s_size, sig->digest, sig->digest_size);
+
+ sg_init_one(&src_sg, buf, sig->s_size + sig->digest_size);
+ akcipher_request_set_crypt(req, &src_sg, NULL, sig->s_size,
+ sig->digest_size);
+ crypto_init_wait(&cwait);
+ akcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG |
+ CRYPTO_TFM_REQ_MAY_SLEEP,
+ crypto_req_done, &cwait);
+ ret = crypto_wait_req(crypto_akcipher_verify(req), &cwait);
+
+error_free_buf:
+ kfree(buf);
error_free_req:
akcipher_request_free(req);
error_free_tfm:
@@ -167,6 +410,8 @@
.name_len = sizeof("public_key") - 1,
.describe = public_key_describe,
.destroy = public_key_destroy,
+ .query = software_key_query,
+ .eds_op = software_key_eds_op,
.verify_signature = public_key_verify_signature_2,
};
EXPORT_SYMBOL_GPL(public_key_subtype);
--
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