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31 lines
700 B
C
31 lines
700 B
C
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/*
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* SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdlib.h>
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#include <stdint.h>
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#include "test_mbedtls_utils.h"
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static inline char to_hex_digit(unsigned val)
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{
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return (val < 10) ? ('0' + val) : ('a' + val - 10);
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}
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void utils_bin2hex(char *const hex, const size_t hex_maxlen, const unsigned char *const bin, const size_t bin_len)
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{
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assert(bin_len < SIZE_MAX / 2);
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assert(hex_maxlen > bin_len * 2U);
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assert(hex);
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assert(bin);
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int i;
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for (i = 0; i < bin_len; i++) {
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hex[2*i] = to_hex_digit(bin[i] >> 4);
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hex[2*i + 1] = to_hex_digit(bin[i] & 0xf);
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}
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hex[i * 2U] = 0U;
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}
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