minimalHelper.js

define([], function () {
	var chelper = {
		getCurveName: function (curve) {
			var curcurve;
			for (curcurve in sjcl.ecc.curves) {
				if (sjcl.ecc.curves.hasOwnProperty(curcurve)) {
					if (sjcl.ecc.curves[curcurve] === curve) {
						return curcurve;
					}
				}
			}

			throw "curve not existing";
		},
		getCurve: function (curveName) {
			if (typeof curveName !== "string" || curveName.substr(0, 1) !== "c") {
				curveName = "c" + curveName;
			}

			if (sjcl.ecc.curves[curveName]) {
				return sjcl.ecc.curves[curveName];
			}

			throw new Error("invalid curve");
		},
		isHex: function (data) {
			return (data && typeof data === "string" && !!data.match(/^[A-Fa-f0-9]*$/));
		},
		hex2bits: function (t) {
			if (t instanceof Array) {
				return t;
			}

			return sjcl.codec.hex.toBits(t);
		},
		bits2hex: function (t) {
			if (typeof t === "string") {
				return t;
			}

			return sjcl.codec.hex.fromBits(t);
		}
	};

	return chelper;
});