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Update jsOTP.js #5

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Update jsOTP.js #5

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7 changes: 4 additions & 3 deletions dist/jsOTP.js
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Original file line number Diff line number Diff line change
Expand Up @@ -78,7 +78,7 @@
throw "Error: invalid code length";
}
}

Hotp.prototype.uintToString = function(uintArray) {
var decodedString, encodedString;
encodedString = String.fromCharCode.apply(null, uintArray);
Expand All @@ -88,9 +88,10 @@

Hotp.prototype.getOtp = function(key, counter) {
var digest, h, offset, shaObj, v;
shaObj = new jsSHA("SHA-1", "TEXT");
shaObj = new jsSHA("SHA-1", "HEX"); // was "TEXT" but this broke for counter > 127
shaObj.setHMACKey(key, "TEXT");
shaObj.update(this.uintToString(new Uint8Array(this.intToBytes(counter))));
counterString = ("0000000000000000" + counter.toString(16)).slice(-16); // padded hex counter value
shaObj.update(counterString);
digest = shaObj.getHMAC("HEX");
h = this.hexToBytes(digest);
offset = h[19] & 0xf;
Expand Down