Client and backend. Every class listed here is shared: the same code is compiled into your app and into your server. The package's page in the client API lists all of it, including any classes that exist only in the app.

package com.codename1.crypto.evm

Ethereum and other EVM chains: EvmAddress with the EIP-55 checksum, EvmTransaction for legacy (EIP-155), access-list (EIP-2930) and dynamic-fee (EIP-1559) transactions, Abi encoding, PersonalSign (EIP-191), TypedData (EIP-712) and Erc20 token calls.

Types

class AbiThe Solidity contract ABI: function selectors, call data and return values.
class Erc20Call data for ERC-20 tokens (USDC, USDT, DAI…).
class EvmAddressA 20-byte address on Ethereum or any EVM chain (Polygon, Arbitrum, Base, BNB Chain…).
class EvmTransactionAn EVM transaction in any of the three envelopes nodes accept: legacy (with EIP-155 replay protection), EIP-2930 access-list (type 1) and EIP-1559 dynamic-fee (type 2).
class PersonalSignEIP-191 personal_sign messages, the “Sign in with Ethereum” and wallet-ownership proof, and the 65-byte r || s || v signatures EVM wallets exchange.
class TypedDataEIP-712 typed structured data: the eth_signTypedData_v4 document permits, orders and meta-transactions are signed as.