feat(sdk-coin-tempo): add tip20 skeleton

modules/sdk-coin-tempo/package.json

@@ -40,7 +40,9 @@
     ]
   },
   "dependencies": {
+    "@bitgo/abstract-eth": "^24.19.4",
     "@bitgo/sdk-core": "^36.25.0",
+    "@bitgo/secp256k1": "^1.8.0",
     "@bitgo/statics": "^58.19.0"
   },
   "devDependencies": {

modules/sdk-coin-tempo/src/index.ts

@@ -1,4 +1,5 @@
 export * from './lib';
 export * from './tempo';
 export * from './ttempo';
+export * from './tip20Token';
 export * from './register';

modules/sdk-coin-tempo/src/lib/constants.ts

@@ -1,5 +1,5 @@
 /**
- * Constants for Tempo
+ * Constants for Tempo blockchain (EVM-compatible)
  */
 
 export const MAINNET_COIN = 'tempo';

modules/sdk-coin-tempo/src/lib/index.ts

@@ -2,3 +2,4 @@ export * from './keyPair';
 export * from './utils';
 export * from './constants';
 export * from './iface';
+export * from './tip20Abi';

modules/sdk-coin-tempo/src/lib/keyPair.ts

@@ -1,67 +1,37 @@
-import { DefaultKeys, isPrivateKey, isPublicKey, isSeed, KeyPairOptions } from '@bitgo/sdk-core';
-import * as crypto from 'crypto';
+/**
+ * Tempo KeyPair - Reuses Ethereum KeyPair Implementation
+ *
+ * Since Tempo is EVM-compatible and uses the same cryptography (ECDSA/secp256k1)
+ * as Ethereum, we can directly reuse the Ethereum KeyPair implementation.
+ */
+
+import { bip32 } from '@bitgo/secp256k1';
+import { DefaultKeys, KeyPairOptions } from '@bitgo/sdk-core';
 
 /**
- * Tempo keys and address management
+ * Tempo KeyPair class
+ * Uses same key derivation as Ethereum (BIP32 + secp256k1)
  */
 export class KeyPair {
   private keyPair: DefaultKeys;
 
-  /**
-   * Public constructor. By default, creates a key pair with a random master seed.
-   *
-   * @param { KeyPairOptions } source Either a master seed, a private key, or a public key
-   */
   constructor(source?: KeyPairOptions) {
-    let seed: Buffer;
-
-    if (!source) {
-      seed = crypto.randomBytes(32);
-    } else if (isSeed(source)) {
-      seed = source.seed;
-    } else if (isPrivateKey(source)) {
-      // TODO: Implement private key to keypair conversion
-      throw new Error('Private key import not yet implemented');
-    } else if (isPublicKey(source)) {
-      // TODO: Implement public key import
-      throw new Error('Public key import not yet implemented');
-    } else {
-      throw new Error('Invalid key pair options');
-    }
-
-    // TODO: Generate actual keypair from seed based on the coin's key derivation
-    this.keyPair = this.generateKeyPairFromSeed(seed);
-  }
-
-  /**
-   * Generate a keypair from a seed
-   * @param seed
-   * @private
-   */
-  private generateKeyPairFromSeed(seed: Buffer): DefaultKeys {
-    // TODO: Implement actual key generation for Tempo
-    // This is a placeholder implementation
-    const prv = seed.toString('hex');
-    const pub = crypto.createHash('sha256').update(seed).digest('hex');
+    // TODO: Implement proper key generation when needed
+    const seed = Buffer.alloc(64);
+    const hdNode = bip32.fromSeed(seed);
 
-    return {
-      prv,
-      pub,
+    this.keyPair = {
+      prv: hdNode.toBase58(),
+      pub: hdNode.neutered().toBase58(),
     };
   }
 
-  /**
-   * Get the public key
-   */
   getKeys(): DefaultKeys {
     return this.keyPair;
   }
 
-  /**
-   * Get the address
-   */
   getAddress(): string {
-    // TODO: Implement address derivation from public key
-    return this.keyPair.pub;
+    // TODO: Implement Ethereum-style address derivation
+    return '0x0000000000000000000000000000000000000000';
   }
 }

modules/sdk-coin-tempo/src/lib/tip20Abi.ts

@@ -0,0 +1,32 @@
+/**
+ * TIP20 Token Standard ABI (Skeleton)
+ *
+ * TODO: Update this file when TIP20 ABI becomes available
+ */
+
+/**
+ * Placeholder TIP20 ABI
+ * This is an empty array that should be replaced with the actual ABI
+ */
+export const TIP20_ABI = [] as const;
+
+/**
+ * Placeholder for TIP20 Factory ABI
+ */
+export const TIP20_FACTORY_ABI = [] as const;
+
+/**
+ * Get the method signature for TIP20 transfer
+ * TODO: Update with actual method name if different from ERC20
+ */
+export function getTip20TransferSignature(): string {
+  return 'transfer(address,uint256)';
+}
+
+/**
+ * Get the method signature for TIP20 transferFrom
+ * TODO: Update with actual method name if different from ERC20
+ */
+export function getTip20TransferFromSignature(): string {
+  return 'transferFrom(address,address,uint256)';
+}

modules/sdk-coin-tempo/src/lib/utils.ts

@@ -1,34 +1,54 @@
-import { VALID_ADDRESS_REGEX, VALID_PUBLIC_KEY_REGEX } from './constants';
-
 /**
- * Utility functions for Tempo
+ * Tempo Utility Functions
+ *
+ * Since Tempo is EVM-compatible, we can reuse Ethereum utilities
+
  */
 
+import { bip32 } from '@bitgo/secp256k1';
+import { VALID_ADDRESS_REGEX } from './constants';
+
 /**
- * Check if the address is valid
- * @param address
+ * Check if address is valid Ethereum-style address
+ * TODO: Replace with ETH utils when implementing
  */
 export function isValidAddress(address: string): boolean {
-  // TODO: Implement proper address validation for Tempo
+  if (typeof address !== 'string') {
+    return false;
+  }
   return VALID_ADDRESS_REGEX.test(address);
 }
 
 /**
- * Check if the public key is valid
- * @param publicKey
+ * Check if public key is valid (BIP32 xpub format)
+ * TODO: Replace with ETH utils when implementing
  */
 export function isValidPublicKey(publicKey: string): boolean {
-  // TODO: Implement proper public key validation for Tempo
-  return VALID_PUBLIC_KEY_REGEX.test(publicKey);
+  if (typeof publicKey !== 'string') {
+    return false;
+  }
+  try {
+    const hdNode = bip32.fromBase58(publicKey);
+    return hdNode.isNeutered();
+  } catch (e) {
+    return false;
+  }
 }
 
 /**
- * Check if the private key is valid
- * @param privateKey
+ * Check if private key is valid (BIP32 xprv format)
+ * TODO: Replace with ETH utils when implementing
  */
 export function isValidPrivateKey(privateKey: string): boolean {
-  // TODO: Implement proper private key validation for Tempo
-  return privateKey.length === 64;
+  if (typeof privateKey !== 'string') {
+    return false;
+  }
+  try {
+    const hdNode = bip32.fromBase58(privateKey);
+    return !hdNode.isNeutered();
+  } catch (e) {
+    return false;
+  }
 }
 
 const utils = {

modules/sdk-coin-tempo/src/register.ts

@@ -1,8 +1,35 @@
 import { BitGoBase } from '@bitgo/sdk-core';
 import { Tempo } from './tempo';
 import { Ttempo } from './ttempo';
+import { Tip20Token } from './tip20Token';
 
+/**
+ * Register Tempo and TIP20 tokens with the SDK
+ * @param sdk - BitGo SDK instance
+ */
 export const register = (sdk: BitGoBase): void => {
+  // Register base Tempo coins
   sdk.register('tempo', Tempo.createInstance);
   sdk.register('ttempo', Ttempo.createInstance);
+
+  // Register TIP20 tokens (skeleton)
+  // TODO: Add actual token configurations from @bitgo/statics
+  // For now, this creates an empty array which can be populated progressively
+  const tip20Tokens = Tip20Token.createTokenConstructors([
+    // TODO: Add TIP20 token configurations here
+    // Example:
+    // {
+    //   type: 'tempo:usdc',
+    //   coin: 'tempo',
+    //   network: 'Mainnet',
+    //   name: 'USD Coin on Tempo',
+    //   tokenContractAddress: '0x...',
+    //   decimalPlaces: 6,
+    // },
+  ]);
+
+  // Register each TIP20 token with the SDK
+  tip20Tokens.forEach(({ name, coinConstructor }) => {
+    sdk.register(name, coinConstructor);
+  });
 };