商城下单购买，品类接口，钱包依赖

wallet/Wallet.js

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+import Bitcore from "bitcore-lib"
+import Mnemonic from "bitcore-mnemonic"
+import secp256k1 from 'secp256k1'
+import {
+    Address,
+    pubToAddress,
+    toBuffer,
+    toChecksumAddress,
+    intToBuffer
+} from 'ethereumjs-util'
+import coinType from './networks.js'
+import basex from 'base-x'
+
+export default class Wallet {
+
+    static coinType = coinType
+
+    /**
+     * 生成助记词
+     * @param {Object} lang
+     */
+    static generateMnemonic(lang) {
+        if (lang) {
+            return (new Mnemonic(this.getLanguage(lang))).toString();
+        } else {
+            return (new Mnemonic()).toString();
+        }
+    }
+
+    /**
+     * 验证助记词
+     * @param {Object} code
+     * @param {Object} lang
+     */
+    static validMnemonic(code, lang) {
+        if (lang) {
+            return Mnemonic.isValid(code, this.getLanguage(lang));
+        } else {
+            return Mnemonic.isValid(code);
+        }
+    }
+
+    /**
+     * 获取助记词字典
+     * @param {Object} lang
+     */
+    static getLanguage(lang) {
+        return Mnemonic.Words[lang]
+    }
+
+    /**
+     * 转成硬钱包私钥
+     * @param {Object} code
+     */
+    static toHDPrivateKey(code) {
+        return (new Mnemonic(code)).toHDPrivateKey()
+    }
+
+    /**
+     * 验证地址是否合法
+     * @param {Object} addr
+     */
+    static isValidAddress(addr) {
+        return Bitcore.Address.isValid(addr)
+    }
+
+    /**
+     * 硬钱包私钥转成对应网络的 地址 和 私钥
+     * @param {Object} hdPrivateKey
+     * @param {Object} type
+     */
+    static HDPrivateKeyToAddress(hdPrivateKey, type) {
+        const derived = hdPrivateKey.derive("m/44'/" + type.type + "'/0'/0/0");
+        if (type.type === 195) {
+            const ethAddr = this.getEthereumAddress(derived)
+            const addressBuffer = Buffer.concat([intToBuffer(0x41), ethAddr.buf], 21)
+            return {
+                address: Bitcore.encoding.Base58Check.encode(addressBuffer),
+                public_key: derived.privateKey.publicKey.toString(),
+                private_key: derived.privateKey.toString()
+            }
+        }
+        if (type.type === 144) {
+            let addr = derived.privateKey.toAddress(type.network).toString()
+            let deco = Bitcore.encoding.Base58.decode(addr)
+
+            return {
+                address: basex('rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz').encode(deco),
+                public_key: derived.privateKey.publicKey.toString(),
+                private_key: derived.privateKey.toString()
+            }
+        }
+        if (this.networkIsEthereum(type)) {
+            return {
+                address: toChecksumAddress(this.getEthereumAddress(derived).toString()),
+                public_key: derived.privateKey.publicKey.toString(),
+                private_key: derived.privateKey.toString()
+            }
+        }
+        return {
+            address: derived.privateKey.toAddress(type.network).toString(),
+            public_key: derived.privateKey.publicKey.toString(),
+            private_key: derived.privateKey.toString()
+        }
+    }
+
+    /**
+     * 以太坊地址格式转换
+     * @param {Object} derived
+     */
+    static getEthereumAddress(derived) {
+        const publicKey = derived.hdPublicKey.publicKey.toBuffer()
+        const ethPublicKey = secp256k1.publicKeyConvert(publicKey, false)
+            .slice(1)
+        return Address.fromPublicKey(toBuffer(ethPublicKey))
+    }
+
+    /**
+     * 是否是以太坊网络
+     * @param {Object} type
+     */
+    static networkIsEthereum(type) {
+        return type.isEthereum
+    }
+
+}