Implement support for Sui (SUI) blockchain (784) with encoding and decoding functions

docs/supported-cryptocurrencies.md

@@ -138,6 +138,7 @@ The following coins are supported:
 | 589       | tfuel | Theta Fuel          | checksummed-hex                                                    |
 | 592       | grin  | Grin                | base58check                                                        |
 | 714       | bnb   | BNB                 | bech32                                                             |
+| 784       | sui   | Sui                 | hex                                                                |
 | 818       | vet   | VeChain             | checksummed-hex                                                    |
 | 825       | hive  | Hive                | base58 + ripemd160-checksum                                        |
 | 888       | neo   | NEO                 | base58check                                                        |

src/coders.ts

@@ -120,6 +120,7 @@ export { decodeSteemAddress, encodeSteemAddress } from "./coin/steem.js";
 export { decodeStratAddress, encodeStratAddress } from "./coin/strat.js";
 export { decodeStrkAddress, encodeStrkAddress } from "./coin/strk.js";
 export { decodeStxAddress, encodeStxAddress } from "./coin/stx.js";
+export { decodeSuiAddress, encodeSuiAddress } from "./coin/sui.js";
 export { decodeSysAddress, encodeSysAddress } from "./coin/sys.js";
 export { decodeTfuelAddress, encodeTfuelAddress } from "./coin/tfuel.js";
 export {

src/coin/sui.test.ts

@@ -0,0 +1,60 @@
+import { hexToBytes } from "@noble/hashes/utils";
+import { describe, expect, test } from "bun:test";
+import { decodeSuiAddress, encodeSuiAddress } from "./sui.js";
+
+describe.each([
+  // Test vectors from Sui documentation and examples
+  {
+    text: "0x21dcef5bbc5ec6d1789e8b92d3cb2c4d6855da09bd8197f8b256ca15714a7c47",
+    hex: "21dcef5bbc5ec6d1789e8b92d3cb2c4d6855da09bd8197f8b256ca15714a7c47",
+  },
+  {
+    text: "0x0000000000000000000000000000000000000000000000000000000000000001",
+    hex: "0000000000000000000000000000000000000000000000000000000000000001",
+  },
+  // Test case without 0x prefix
+  {
+    text: "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
+    hex: "1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
+  },
+])("sui address", ({ text, hex }) => {
+  test(`encode: ${text}`, () => {
+    expect(encodeSuiAddress(hexToBytes(hex))).toEqual(text.toLowerCase());
+  });
+  test(`decode: ${text}`, () => {
+    expect(decodeSuiAddress(text)).toEqual(hexToBytes(hex));
+  });
+});
+
+test("SUI decoding - incorrect length", () => {
+  expect(() =>
+    decodeSuiAddress("0x21dcef5bbc5ec6d1789e8b92d3cb2c4d6855da09bd8197f8b256ca15714a7c")
+  ).toThrow("Unrecognised address format");
+});
+
+test("SUI decoding - invalid hex", () => {
+  expect(() =>
+    decodeSuiAddress("0x21dcef5bbc5ec6d1789e8b92d3cb2c4d6855da09bd8197f8b256ca15714a7c4g")
+  ).toThrow("Unrecognised address format");
+});
+
+test("SUI encoding - incorrect length", () => {
+  expect(() =>
+    encodeSuiAddress(
+      hexToBytes("21dcef5bbc5ec6d1789e8b92d3cb2c4d6855da09bd8197f8b256ca15714a7c")
+    )
+  ).toThrow("Unrecognised address format");
+});
+
+test("SUI decoding - without 0x prefix", () => {
+  const address = "21dcef5bbc5ec6d1789e8b92d3cb2c4d6855da09bd8197f8b256ca15714a7c47";
+  expect(decodeSuiAddress(address)).toEqual(hexToBytes(address));
+});
+
+test("SUI encoding/decoding - case insensitive input", () => {
+  const upperCaseAddress = "0x21DCEF5BBC5EC6D1789E8B92D3CB2C4D6855DA09BD8197F8B256CA15714A7C47";
+  const expectedBytes = hexToBytes("21dcef5bbc5ec6d1789e8b92d3cb2c4d6855da09bd8197f8b256ca15714a7c47");
+
+  expect(decodeSuiAddress(upperCaseAddress)).toEqual(expectedBytes);
+  expect(encodeSuiAddress(expectedBytes)).toEqual(upperCaseAddress.toLowerCase());
+});

src/coin/sui.ts

@@ -0,0 +1,37 @@
+import type { CheckedCoin } from "../types.js";
+import {
+  bytesToHex,
+  hexToBytes,
+} from "../utils/bytes.js";
+import { stripHexPrefix } from "../utils/hex.js";
+
+const name = "sui";
+const coinType = 784;
+
+export const encodeSuiAddress = (source: Uint8Array) => {
+  if (source.length !== 32) throw new Error("Unrecognised address format");
+
+  const encoded = bytesToHex(source);
+  return encoded.toLowerCase();
+};
+
+export const decodeSuiAddress = (source: string) => {
+  const stripped = stripHexPrefix(source);
+
+  // Check if the address has the correct format (64 hex chars)
+  if (!/^0x[a-fA-F0-9]{64}$/.test(source) && !/^[a-fA-F0-9]{64}$/.test(stripped)) {
+    throw new Error("Unrecognised address format");
+  }
+
+  const decoded = hexToBytes(`0x${stripped}` as const);
+  if (decoded.length !== 32) throw new Error("Unrecognised address format");
+
+  return decoded;
+};
+
+export const sui = {
+  name,
+  coinType,
+  encode: encodeSuiAddress,
+  decode: decodeSuiAddress,
+} as const satisfies CheckedCoin;

src/coins.ts

@@ -93,6 +93,7 @@ export { steem } from "./coin/steem.js";
 export { strat } from "./coin/strat.js";
 export { strk } from "./coin/strk.js";
 export { stx } from "./coin/stx.js";
+export { sui } from "./coin/sui.js";
 export { sys } from "./coin/sys.js";
 export { tfuel } from "./coin/tfuel.js";
 export { thetaLegacy } from "./coin/thetaLegacy.js";

src/consts/coinTypeToNameMap.ts

@@ -141,6 +141,7 @@ export const nonEvmCoinTypeToNameMap = Object.freeze({
   "592": ["grin", "Grin"],
   "700": ["gnoLegacy", "[LEGACY] Gnosis"],
   "714": ["bnb", "BNB"],
+  "784": ["sui", "Sui"],
   "818": ["vet", "VeChain"],
   "820": ["cloLegacy", "[LEGACY] Callisto"],
   "825": ["hive", "Hive"],