291ebdd4e4
Fix infinite recursion in host-based bt_rand function. This would call HCI LE Random Number command, which would in turn call bt_rand, causing an infinite recursion. bt_rand -> prng_reseed -> BT_HCI_OP_LE_RAND -> le_rand -> bt_rand To solve this issue the controller should avoid doing calls into the host, so all calls to bt_rand in the controller should be replaced with a call to a controller function. Fixes #22202 Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
44 lines
905 B
C
44 lines
905 B
C
/*
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* Copyright (c) 2016-2017 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_HCI_DRIVER)
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#define LOG_MODULE_NAME bt_ctlr_crypto
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#include "common/log.h"
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#include "../util/util.h"
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#include "hal/ecb.h"
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int bt_rand(void *buf, size_t len)
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{
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return util_rand(buf, len);
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}
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int bt_encrypt_le(const u8_t key[16], const u8_t plaintext[16],
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u8_t enc_data[16])
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{
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BT_DBG("key %s", bt_hex(key, 16));
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BT_DBG("plaintext %s", bt_hex(plaintext, 16));
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ecb_encrypt(key, plaintext, enc_data, NULL);
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BT_DBG("enc_data %s", bt_hex(enc_data, 16));
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return 0;
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}
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int bt_encrypt_be(const u8_t key[16], const u8_t plaintext[16],
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u8_t enc_data[16])
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{
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BT_DBG("key %s", bt_hex(key, 16));
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BT_DBG("plaintext %s", bt_hex(plaintext, 16));
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ecb_encrypt_be(key, plaintext, enc_data);
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BT_DBG("enc_data %s", bt_hex(enc_data, 16));
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return 0;
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}
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