From 64c6107ce0be1e864352063f157af44bc345989a Mon Sep 17 00:00:00 2001
From: =?utf8?q?Miro=20Mets=C3=A4nheimo?= <miro@metsanheimo.fi>
Date: Sat, 18 Sep 2021 23:00:42 +0300
Subject: [PATCH] Version 1.3.5

* Expose the blake2b hashing function
* Expose the public key to address function
---
 README.md         |  2 +-
 index.ts          | 24 ++++++++++++++++++++++++
 package-lock.json |  2 +-
 package.json      |  2 +-
 test/test.js      | 13 +++++++++++++
 5 files changed, 40 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index cd006f2..ede8a45 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ npm install nanocurrency-web
 ### In web
 
 ```html
-<script src="https://unpkg.com/nanocurrency-web@1.3.3" type="text/javascript"></script>
+<script src="https://unpkg.com/nanocurrency-web@1.3.5" type="text/javascript"></script>
 <script type="text/javascript">
     NanocurrencyWeb.wallet.generate(...);
 </script>
diff --git a/index.ts b/index.ts
index 2234ae7..4146b4c 100644
--- a/index.ts
+++ b/index.ts
@@ -334,6 +334,30 @@ const tools = {
 		return Convert.ab2hex(publicKeyBytes).slice(0, 64)
 	},
 
+	/**
+	 * Convert a public key to a Nano address
+	 *
+	 * @param {string} input Public key to convert
+	 * @returns {string} the nano address
+	 */
+	publicKeyToAddress: (input: string): string => {
+		return nanoAddress.deriveAddress(input)
+	},
+
+	/**
+	 * Hash a string or array of strings with blake2b
+	 *
+	 * @param {string | string[]} input string to hash
+	 * @returns {string} hashed string
+	 */
+	blake2b: (input: string | string[]): string => {
+		if (Array.isArray(input)) {
+			return Convert.ab2hex(signer.generateHash(input.map(Convert.stringToHex)))
+		} else {
+			return Convert.ab2hex(signer.generateHash([Convert.stringToHex(input)]))
+		}
+	},
+
 }
 
 export {
diff --git a/package-lock.json b/package-lock.json
index b2f2a83..9d1b70d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
 	"name": "nanocurrency-web",
-	"version": "1.3.4",
+	"version": "1.3.5",
 	"lockfileVersion": 1,
 	"requires": true,
 	"dependencies": {
diff --git a/package.json b/package.json
index b4d2d91..fc6af57 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "nanocurrency-web",
-	"version": "1.3.4",
+	"version": "1.3.5",
 	"description": "Toolkit for Nano cryptocurrency client side offline integrations",
 	"author": "Miro Metsänheimo <miro@metsanheimo.fi>",
 	"license": "MIT",
diff --git a/test/test.js b/test/test.js
index 45abdf7..8187d30 100644
--- a/test/test.js
+++ b/test/test.js
@@ -316,4 +316,17 @@ describe('Signer tests', () => {
 		expect(publicKey).to.equal('5b65b0e8173ee0802c2c3e6c9080d1a16b06de1176c938a924f58670904e82c4')
 	})
 
+	it('should convert a public key to a Nano address', () => {
+		const address = tools.publicKeyToAddress('5b65b0e8173ee0802c2c3e6c9080d1a16b06de1176c938a924f58670904e82c4')
+		expect(address).to.equal('nano_1pu7p5n3ghq1i1p4rhmek41f5add1uh34xpb94nkbxe8g4a6x1p69emk8y1d')
+	})
+
+	it('should create a blake2b hash', () => {
+		let hash = tools.blake2b('asd')
+		expect(hash).to.equal('f787fbcdd2b4c6f6447921d6f163e8fddfb83d08432430cacaaab1bbedd723fe')
+
+		hash = tools.blake2b(['asd'])
+		expect(hash).to.equal('f787fbcdd2b4c6f6447921d6f163e8fddfb83d08432430cacaaab1bbedd723fe')
+	})
+
 })
-- 
2.34.1