cryptnox-sdk-arduino/util_8h_source.html

/*

 * SPDX-License-Identifier: LGPL-3.0-or-later

 * Copyright (c) 2026 Cryptnox SA

 */


#ifndef UTIL_H

#define UTIL_H


#include <stdint.h>

#include <stddef.h>


uint32_t RlpEncodeWholeHeader(uint8_t *header_output, size_t header_cap, uint32_t total_len);


uint32_t RlpEncodeItem(uint8_t* output, size_t output_cap, const uint8_t* input, uint32_t input_len);


uint32_t ConvertNumberToUintArray(uint8_t *str, uint64_t val);


size_t trimLeadingZeros(uint8_t* out, size_t out_cap, const uint8_t* in, size_t in_len);


int fromHex(char c);


bool hexToBytes(const char* hex, uint8_t* out, size_t len);


#endif /* UTIL_H */

trimLeadingZeros
size_t trimLeadingZeros(uint8_t *out, size_t out_cap, const uint8_t *in, size_t in_len)
Removes leading zeros from a byte array.
Definition util.cpp:220

RlpEncodeWholeHeader
uint32_t RlpEncodeWholeHeader(uint8_t *header_output, size_t header_cap, uint32_t total_len)
Encodes the total length into an RLP list header.
Definition util.cpp:76

fromHex
int fromHex(char c)
Convert a hexadecimal character to a byte value.
Definition util.cpp:15

hexToBytes
bool hexToBytes(const char *hex, uint8_t *out, size_t len)
Convert a hex string to a byte array.
Definition util.cpp:32

RlpEncodeItem
uint32_t RlpEncodeItem(uint8_t *output, size_t output_cap, const uint8_t *input, uint32_t input_len)
Encodes a single item in RLP format.
Definition util.cpp:123

ConvertNumberToUintArray
uint32_t ConvertNumberToUintArray(uint8_t *str, uint64_t val)
Converts an unsigned integer to a big-endian byte array.
Definition util.cpp:190