eth_rlp.h

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/*
 * SPDX-License-Identifier: LGPL-3.0-or-later
 * Copyright (c) 2026 Cryptnox SA
 */

 
#ifndef ETH_RLP_H
#define ETH_RLP_H
 
/******************************************************************
 * 1. Included files
 ******************************************************************/
 
#include <stdint.h>
#include <stddef.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/******************************************************************
 * 2. Types
 ******************************************************************/

typedef struct {
    uint64_t       chain_id;          
    uint64_t       nonce;             
    uint64_t       max_priority_fee;  
    uint64_t       max_fee;           
    uint64_t       gas_limit;         
    uint8_t        to[20];            
    uint64_t       eth_value;         
    const uint8_t *calldata;          
    size_t         calldata_len;      
} eth_tx_t;
 
/******************************************************************
 * 3. Public API
 ******************************************************************/

size_t eth_rlp_encode_unsigned(const eth_tx_t *tx, uint8_t *out, size_t out_max);

size_t eth_rlp_encode_signed(const eth_tx_t *tx, uint8_t v,
                              const uint8_t r[32], const uint8_t s[32],
                              uint8_t *out, size_t out_max);
 
#ifdef __cplusplus
}
#endif
 
#endif // ETH_RLP_H