@xpla/xpla/dist/auth/strategy.js

<p align="center"> <img src="https://user-images.githubusercontent.com/545047/188804067-28e67e5e-0214-4449-ab04-2e0c564a6885.svg" width="80"> </p>

import { bech32 } from "bech32";
import { keccak_256 } from "@noble/hashes/sha3";

//#region src/auth/strategy.ts
const COSMOS_EVM_ADDRESS_STRATEGY = {
	name: "cosmos_evm",
	preprocessPublicKey: (pubKeyBytes, compressed, algo) => {
		let ethPubKey = compressed ? algo.uncompress(pubKeyBytes) : pubKeyBytes;
		return ethPubKey[0] === 4 ? ethPubKey.slice(1) : ethPubKey;
	},
	hash: (bytes) => keccak_256(bytes).slice(-20),
	encode: (bytes, prefix = "xpla") => {
		const words = bech32.toWords(Buffer.from(bytes));
		return bech32.encode(prefix, words);
	},
	decode: (address) => {
		const decoded = bech32.decode(address);
		return {
			bytes: new Uint8Array(bech32.fromWords(decoded.words)),
			prefix: decoded.prefix
		};
	},
	extractPrefix: (address) => {
		const match = address.match(/^([a-z]+)1/);
		return match ? match[1] : void 0;
	}
};

//#endregion
export { COSMOS_EVM_ADDRESS_STRATEGY };