feat(sdk-coin-near): address verification for near

modules/sdk-coin-near/src/near.ts

@@ -18,8 +18,8 @@ import {
   EDDSAMethods,
   EDDSAMethodTypes,
   Environments,
+  InvalidAddressError,
   KeyPair,
-  MethodNotImplementedError,
   MPCAlgorithm,
   MPCRecoveryOptions,
   MPCSweepRecoveryOptions,
@@ -38,7 +38,9 @@ import {
   TokenEnablementConfig,
   TransactionParams,
   TransactionType,
-  VerifyAddressOptions,
+  TssVerifyAddressOptions,
+  UnexpectedAddressError,
+  verifyMPCWalletAddress,
   VerifyTransactionOptions,
 } from '@bitgo/sdk-core';
 import { BaseCoin as StaticsBaseCoin, CoinFamily, coins, Nep141Token, Networks } from '@bitgo/statics';
@@ -82,6 +84,15 @@ export interface NearParseTransactionOptions extends BaseParseTransactionOptions
   };
 }
 
+/**
+ * Options for verifying NEAR TSS/MPC wallet addresses.
+ * Extends base TssVerifyAddressOptions with NEAR-specific fields.
+ */
+export interface TssVerifyNearAddressOptions extends TssVerifyAddressOptions {
+  /** The root address of the wallet (for root address verification) */
+  rootAddress?: string;
+}
+
 interface TransactionOutput {
   address: string;
   amount: string;
@@ -984,8 +995,41 @@ export class Near extends BaseCoin {
     };
   }
 
-  async isWalletAddress(params: VerifyAddressOptions): Promise<boolean> {
-    throw new MethodNotImplementedError();
+  /**
+   * Verify if an address belongs to a NEAR wallet using EdDSA TSS MPC derivation.
+   * For NEAR, the address is the public key directly (implicit accounts).
+   *
+   * @param {TssVerifyAddressOptions} params - Verification parameters
+   * @returns {Promise<boolean>} True if address belongs to wallet
+   * @throws {InvalidAddressError} If address format is invalid or doesn't match derived address
+   * @throws {Error} If invalid parameters
+   */
+  async isWalletAddress(params: TssVerifyNearAddressOptions): Promise<boolean> {
+    const { address, rootAddress } = params;
+
+    if (!this.isValidAddress(address)) {
+      throw new InvalidAddressError(`invalid address: ${address}`);
+    }
+
+    const isVerifyingRootAddress = rootAddress && address === rootAddress;
+    if (isVerifyingRootAddress) {
+      const index = typeof params.index === 'string' ? parseInt(params.index, 10) : params.index;
+      if (index !== 0) {
+        throw new Error(`Root address verification requires index 0, but got index ${params.index}.`);
+      }
+    }
+
+    const result = await verifyMPCWalletAddress(
+      { ...params, keyCurve: 'ed25519' },
+      this.isValidAddress.bind(this),
+      (pubKey) => pubKey
+    );
+
+    if (!result) {
+      throw new UnexpectedAddressError(`address validation failure: address ${address} is not a wallet address`);
+    }
+
+    return true;
   }
 
   async verifyTransaction(params: VerifyTransactionOptions): Promise<boolean> {

modules/sdk-coin-near/test/unit/near.ts

@@ -151,6 +151,100 @@ describe('NEAR:', function () {
     });
   });
 
+  describe('Address verification', () => {
+    const addressVerificationData = {
+      commonKeychain:
+        '43d3f6a94d7e3faf4dd390a7e26f554eaa98c8f0813e3f0ae959d61d8acd012e0504e552a5c311260f2fbaef3a817dfa5b85b984cd43b161bebad9ded25764cc',
+      rootAddress: '98908af363d3e99d87b1d6dce4f80a28bbfe64fee22dbb8a36dada25ba30d027',
+      receiveAddress: '6aa21569736f6ebaf925fef8ece219c2b703098cc358ce34a97f2c2a2e099659',
+      receiveAddressIndex: 2,
+    };
+
+    let keychains;
+
+    before(function () {
+      keychains = [
+        { commonKeychain: addressVerificationData.commonKeychain },
+        { commonKeychain: addressVerificationData.commonKeychain },
+        { commonKeychain: addressVerificationData.commonKeychain },
+      ];
+    });
+
+    it('should verify a valid TSS root address (index 0)', async function () {
+      const params = {
+        address: addressVerificationData.rootAddress,
+        rootAddress: addressVerificationData.rootAddress,
+        keychains: keychains,
+        index: 0,
+      };
+      const result = await basecoin.isWalletAddress(params);
+      result.should.equal(true);
+    });
+
+    it('should verify a valid TSS receive address (index > 0)', async function () {
+      const params = {
+        address: addressVerificationData.receiveAddress,
+        rootAddress: addressVerificationData.rootAddress,
+        keychains: keychains,
+        index: addressVerificationData.receiveAddressIndex,
+      };
+      const result = await basecoin.isWalletAddress(params);
+      result.should.equal(true);
+    });
+
+    it('should throw error for invalid address format', async function () {
+      const invalidAddress = 'invalid-address';
+      const params = {
+        address: invalidAddress,
+        keychains: keychains,
+        index: 0,
+      };
+      await basecoin.isWalletAddress(params).should.be.rejected();
+    });
+
+    it('should throw error when verifying root address with wrong index', async function () {
+      const params = {
+        address: addressVerificationData.rootAddress,
+        rootAddress: addressVerificationData.rootAddress,
+        keychains: keychains,
+        index: 1,
+      };
+      await basecoin
+        .isWalletAddress(params)
+        .should.be.rejectedWith('Root address verification requires index 0, but got index 1.');
+    });
+
+    it('should throw error when keychains is missing', async function () {
+      const params = {
+        address: addressVerificationData.rootAddress,
+        keychains: [],
+        index: 0,
+      };
+      await basecoin.isWalletAddress(params).should.be.rejectedWith('missing required param keychains');
+    });
+
+    it('should throw error for address that does not match derivation', async function () {
+      const wrongAddress = '0000000000000000000000000000000000000000000000000000000000000000';
+      const params = {
+        address: wrongAddress,
+        keychains: keychains,
+        index: 0,
+      };
+      await basecoin.isWalletAddress(params).should.be.rejected();
+    });
+
+    it('should handle string index', async function () {
+      const params = {
+        address: addressVerificationData.rootAddress,
+        rootAddress: addressVerificationData.rootAddress,
+        keychains: keychains,
+        index: '0',
+      };
+      const result = await basecoin.isWalletAddress(params);
+      result.should.equal(true);
+    });
+  });
+
   describe('Verify transaction: ', () => {
     const amount = '1000000';
     const gas = '125000000000000';