Expose getPublic and getPrivate from subprocess

utils/ECC/ECC.js

@@ -201,6 +201,17 @@ const decryptMessage = async ({ encryptedMessage, deviceId }) => {
   }
 }
 
+/**
+ * @returns {Promise<Buffer>}
+ */
+const generatePrivate = () => invoke('generatePrivate', [], cryptoSubprocess)
+
+/**
+ * @param {Buffer} priv
+ * @returns {Promise<Buffer>}
+ */
+const getPublic = priv => invoke('getPublic', [priv], cryptoSubprocess)
+
 module.exports = {
   isAuthorizedDevice,
   isEncryptedMessage,
@@ -211,6 +222,8 @@ module.exports = {
   generateRandomString,
   nodeKeyPairs,
   devicePublicKeys,
+  generatePrivate,
+  getPublic,
   /**
    * Used for tests.
    */

utils/ECC/ECC.spec.js

@@ -13,7 +13,9 @@ const {
   encryptMessage,
   generateKeyPair,
   isAuthorizedDevice,
-  killECCCryptoSubprocess
+  killECCCryptoSubprocess,
+  generatePrivate,
+  getPublic
 } = require('./ECC')
 
 const uuid = () => {
@@ -120,5 +122,26 @@ describe('ECC', () => {
     })
   })
 
+  describe('generatePrivate()', () => {
+    it('generates a private key', async () => {
+      expect.hasAssertions()
+
+      const priv = await generatePrivate()
+
+      expect(priv).toBeInstanceOf(Buffer)
+    })
+  })
+
+  describe('getPublic()', () => {
+    it('derives a public key from a private key', async () => {
+      expect.hasAssertions()
+
+      const priv = await generatePrivate()
+      const pub = await getPublic(priv)
+
+      expect(pub).toBeInstanceOf(Buffer)
+    })
+  })
+
   after(killECCCryptoSubprocess)
 })