Add NOS support

package.json

@@ -11,6 +11,7 @@
     "NanoCurrency",
     "$NANO",
     "Banano",
+    "NOS",
     "NanoS",
     "Blue",
     "Hardware Wallet"

src/NOS.js

@@ -0,0 +1,110 @@
+/********************************************************************************
+ *   LibNano Ledger JS API
+ *   (c) 2018 Mart Roosmaa
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ ********************************************************************************/
+//@flow
+
+import type Transport from "@ledgerhq/hw-transport";
+import type { BlockData } from "./api";
+import { BaseAPI, getAddress, signBlock, cacheBlock } from "./api";
+
+/**
+ * NOS API
+ *
+ * @example
+ * import { NOS } from "hw-app-nano";
+ * const nos = new NOS(transport);
+ */
+export default class NOS extends BaseAPI {
+  constructor(transport: Transport<*>) {
+    super(transport, {
+      coinName: "NOS",
+      addressPrimaryPrefix: "usd_",
+      addressSecondaryPrefix: "usd_"
+    });
+  }
+
+  /**
+   * Get NOS address for the given BIP 32 path.
+   * @param path a path in BIP 32 format
+   * @option boolDisplay display the address on the device
+   * @return an object with a publicKey and address
+   * @example
+   * nos.getAddress("44'/229'/840'/0'").then(o => o.address)
+   */
+  async getAddress(
+    path: string,
+    boolDisplay?: boolean
+  ): Promise<{|
+    publicKey: string,
+    address: string
+  |}> {
+    this._assertCorrectCoin();
+    return await getAddress(this.coin, this.transport, path, boolDisplay);
+  }
+
+  /**
+   * Generate a signature for a block
+   * @param path a path of the account in BIP 32 format
+   * @param blockData block data to hash and sign
+   *
+   * @example <caption>Opening an account</caption>
+   * nos.signBlock("44'/229'/840'/0'", {
+   *   representative: "usd_3hd4ezdgsp15iemx7h81in7xz5tpxi43b6b41zn3qmwiuypankocw3awes5k",
+   *   balance: "100000000000000000000000000000000",
+   *   sourceBlock: "06B95C8A7EC4116E5BD907CD6DC65D310E065992A2E1D02F337D1A8308DEBC14"
+   * }).then(o => o.signature)
+   *
+   * @example <caption>Sending funds</caption>
+   * nos.signBlock("44'/229'/840'/0'", {
+   *   previousBlock: "991CF190094C00F0B68E2E5F75F6BEE95A2E0BD93CEAA4A6734DB9F19B728948",
+   *   representative: "usd_3hd4ezdgsp15iemx7h81in7xz5tpxi43b6b41zn3qmwiuypankocw3awes5k",
+   *   balance: "100000000000000000000000000000000",
+   *   recipient: "usd_3hd4ezdgsp15iemx7h81in7xz5tpxi43b6b41zn3qmwiuypankocw3awes5k"
+   * }).then(o => o.signature)
+   */
+  async signBlock(
+    path: string,
+    blockData: BlockData
+  ): Promise<{|
+    blockHash: string,
+    signature: string
+  |}> {
+    this._assertCorrectCoin();
+    return signBlock(this.coin, this.transport, path, blockData);
+  }
+
+  /**
+   * Cache block in Ledger device memory
+   * @param path a path of the account in BIP 32 format
+   * @param blockData block data
+   * @param signature signature (in hex) of the block
+   *
+   * @example
+   * nos.cacheBlock("44'/229'/840'/0'", {
+   *   representative: "usd_3hd4ezdgsp15iemx7h81in7xz5tpxi43b6b41zn3qmwiuypankocw3awes5k",
+   *   balance: "100000000000000000000000000000000",
+   *   sourceBlock: "06B95C8A7EC4116E5BD907CD6DC65D310E065992A2E1D02F337D1A8308DEBC14"
+   * });
+   */
+  async cacheBlock(
+    path: string,
+    blockData: BlockData,
+    signature: string
+  ): Promise<*> {
+    this._assertCorrectCoin();
+    return cacheBlock(this.coin, this.transport, path, blockData, signature);
+  }
+}

src/index.js

@@ -21,3 +21,4 @@ export type { BlockData } from "./api";
 export { encodeBalance, decodeBalance } from "./util";
 export { default } from "./Nano";
 export { default as Banano } from "./Banano";
+export { default as NOS } from "./NOS";