feat: ledger Signer

__tests__/utils/encode.test.ts

@@ -1,3 +1,4 @@
+import { encode } from '../../src';
 import { atobUniversal, btoaUniversal } from '../../src/utils/encode';
 
 describe('atobUniversal and btoaUniversal functions', () => {
@@ -32,3 +33,12 @@ describe('atobUniversal and btoaUniversal functions', () => {
     expect(decoded).toEqual(new Uint8Array([]));
   });
 });
+
+describe('concatenateArrayBuffer', () => {
+  test('should concatenate uint8Arrays', () => {
+    const path0buff = new Uint8Array([128, 0, 10, 85]);
+    const path1buff = new Uint8Array([71, 65, 233, 201]);
+    const result = encode.concatenateArrayBuffer([path0buff, path1buff]);
+    expect(result).toEqual(new Uint8Array([128, 0, 10, 85, 71, 65, 233, 201]));
+  });
+});

__tests__/utils/ethSigner.test.ts

@@ -10,6 +10,7 @@ import {
   encode,
   eth,
   extractContractHashes,
+  getLedgerPathBuffer,
   hash,
   num,
   stark,
@@ -353,3 +354,16 @@ describe('Ethereum signer', () => {
     });
   });
 });
+
+describe('Ledger Signer', () => {
+  // signature of Ledger can't be tested automatically.
+  // So, just the test of the path encoding.
+  test('getLedgerPathBuffer', () => {
+    const path = getLedgerPathBuffer(3, 'AstroAPP');
+    expect(path).toEqual(
+      new Uint8Array([
+        128, 0, 10, 85, 71, 65, 233, 201, 95, 192, 123, 107, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0,
+      ])
+    );
+  });
+});

__tests__/utils/num.test.ts

@@ -18,6 +18,7 @@ import {
   isNumber,
   isBoolean,
 } from '../../src/utils/num';
+import { num } from '../../src';
 
 describe('isHex', () => {
   test('should return true for valid hex strings', () => {
@@ -208,3 +209,10 @@ describe('isBoolean', () => {
     expect(isBoolean({})).toBe(false);
   });
 });
+
+describe('stringToSha256ToArrayBuff4', () => {
+  test('should correctly hash&encode an utf8 string', () => {
+    const buff = num.stringToSha256ToArrayBuff4('LedgerW');
+    expect(buff).toEqual(new Uint8Array([43, 206, 231, 219]));
+  });
+});

package.json

@@ -95,6 +95,7 @@
     "typescript-coverage-report": "npm:@penovicp/typescript-coverage-report@^1.0.0-beta.2"
   },
   "dependencies": {
+    "@ledgerhq/hw-transport": "^6.31.1",
     "@noble/curves": "~1.4.0",
     "@noble/hashes": "^1.4.0",
     "@scure/base": "~1.1.3",

src/constants.ts

@@ -16,6 +16,7 @@ export { ETransactionVersion as TRANSACTION_VERSION };
 
 export const ZERO = 0n;
 export const MASK_250 = 2n ** 250n - 1n; // 2 ** 250 - 1
+export const MASK_31 = 2n ** 31n - 1n; // 2 ** 31 - 1
 export const API_VERSION = ZERO;
 export const PRIME = 2n ** 251n + 17n * 2n ** 192n + 1n;
 

src/signer/index.ts

@@ -1,3 +1,4 @@
 export * from './interface';
 export * from './default';
 export * from './ethSigner';
+export * from './ledgerSigner';