74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*
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* Copyright Nordic Semiconductor ASA
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "cc310_glue.h"
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int cc310_init(void)
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{
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/* Only initialize once */
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static bool initialized;
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if (!initialized) {
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nrf_cc310_enable();
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if (nrf_cc310_bl_init() != 0) {
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return -1;
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}
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initialized = true;
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nrf_cc310_disable();
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}
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return 0;
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}
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void cc310_sha256_update(nrf_cc310_bl_hash_context_sha256_t *ctx,
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const void *data,
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uint32_t data_len)
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{
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/*
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* NRF Cryptocell can only read from RAM this allocates a buffer on the stack
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* if the data provided is not located in RAM.
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*/
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if ((uint32_t) data < CONFIG_SRAM_BASE_ADDRESS) {
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uint8_t stack_buffer[data_len];
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uint32_t block_len = data_len;
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memcpy(stack_buffer, data, block_len);
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nrf_cc310_bl_hash_sha256_update(ctx, stack_buffer, block_len);
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} else {
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nrf_cc310_bl_hash_sha256_update(ctx, data, data_len);
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}
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};
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int cc310_ecdsa_verify_secp256r1(uint8_t *hash,
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uint8_t *public_key,
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uint8_t *signature,
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size_t hash_len)
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{
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int rc;
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nrf_cc310_bl_ecdsa_verify_context_secp256r1_t ctx;
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cc310_init();
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nrf_cc310_enable();
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rc = nrf_cc310_bl_ecdsa_verify_secp256r1(&ctx,
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(nrf_cc310_bl_ecc_public_key_secp256r1_t *) public_key,
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(nrf_cc310_bl_ecc_signature_secp256r1_t *) signature,
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hash,
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hash_len);
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nrf_cc310_disable();
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return rc;
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}
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