Adding retriveCredentials

floAuthenticator.html

@@ -7544,6 +7544,65 @@ Bitcoin.Util = {
         myFloID = floCrypto.getFloIDfromPubkeyHex(myPubKey)
     }
 
+    function retriveCredentials(pinInput) {
+
+        if (typeof pinInput !== "function") {
+            pinInput = function () {
+                return new Promise((resolve, reject) => {
+                    var input = prompt("Enter PIN")
+                    if (input !== null)
+                        resolve(input)
+                    else
+                        reject(null)
+                })
+            }
+        }
+
+        const readSharesFromIDB = function (pin, indexArr) {
+            return new Promise((resolve, reject) => {
+                var tableArr = []
+                for (var i = 0; i < indexArr.length; i++)
+                    tableArr[i] = pin[i % pin.length]
+                var promises = []
+                for (var i = 0; i < indexArr.length; i++)
+                    promises.push(compactIDB.readData(tableArr[i], indexArr[i], floGlobals.application))
+                Promise.all(promises).then(shares => {
+                    var secret = floCrypto.retrieveShamirSecret(shares)
+                    if (secret)
+                        resolve(secret)
+                    else
+                        reject("Incorrect PIN or Insufficient Shares")
+                }).catch(error => reject(error))
+            })
+        }
+
+        const retrivePrivKey = function () {
+            return new Promise((resolve, reject) => {
+                let indexArr = localStorage.getItem(`${floGlobals.application}#privKey`)
+                if (indexArr) {
+                    pinInput().then(pin => {
+                        if (!pin)
+                            return reject("Empty PIN")
+                        if (!isNaN(pin))
+                            return reject("Invalid PIN")
+                        readSharesFromIDB(pin, JSON.parse(indexArr))
+                            .then(result => resolve(result))
+                            .catch(error => reject(error))
+                    }).catch(error => reject("PIN not entered"))
+                } else
+                    reject("No Credentials Stored")
+            })
+        }
+
+        return new Promise((resolve, reject) => {
+            retrivePrivKey().then(privKey => {
+                myPrivKey = privKey
+                myPubKey = floCrypto.getPubKeyHex(myPrivKey)
+                myFloID = floCrypto.getFloIDfromPubkeyHex(myPubKey)
+                resolve('Login Credentials loaded successful')
+            }).catch(error => reject(error))
+        })
+    }
 </script>
 </body>
 </html>