集成签字面板

2025-12-23 20:12:53 +08:00 · 2021-09-14 14:40:47 +08:00
parent 7b1006ce56
commit b8d2743f3c
11 changed files with 755 additions and 2 deletions
--- a/public/CFCA/Base64.js
+++ b/public/CFCA/Base64.js
@@ -0,0 +1,93 @@
+function Base64() {
+ 
+	// private property
+	b64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
+    b64padchar="=";
+
+	// public method for encoding
+	this.encode = function (bytes) {
+		var i;
+		var c = 0x0;
+		var ret = "";
+		for (i = 0; i + 3 <= bytes.length; i += 3) {
+			c = ((bytes[i] & 0xFF) << 16) ^ ((bytes[i + 1]& 0xFF) << 8) ^ (bytes[i + 2] & 0xFF);
+			ret += b64map.charAt(c >>> 18) + b64map.charAt((c & 0x3F000) >>> 12) + b64map.charAt((c & 0xFC0) >>> 6) + b64map.charAt(c & 0x3F);
+		}
+
+		if (i == (bytes.length-1)) {
+			c = bytes[i] & 0xFF;
+			ret += b64map.charAt((c & 0xFC) >>> 2) + b64map.charAt((c & 0x3) << 4);
+		}
+		else if (i + 1 == (bytes.length-1)) {
+			c = ((bytes[i] & 0xFF) << 8) ^ (bytes[i + 1] & 0xFF);
+			ret += b64map.charAt((c & 0xFC00) >>> 10) + b64map.charAt((c & 0x3F0) >>> 4) + b64map.charAt((c & 0xF) << 2);
+		}
+
+		while ((ret.length & 3) > 0) {
+			ret += b64padchar;
+		}
+
+		return ret;
+	}
+ 
+	// public method for decoding
+	this.decode = function (s) {
+		var ret = [];
+		var i;
+
+		for (i = 0; i < s.length; i += 4) {
+			var block = [];
+			var v1 = b64map.indexOf(s.charAt(i));
+			if (v1 < 0) continue;
+			block.push(v1);
+
+			var v2 = b64map.indexOf(s.charAt(i+1));
+			if (v2 < 0) continue;
+			block.push(v2);
+
+			var third = s.charAt(i+2);
+			if(third == b64padchar) { //Handle Block
+				ret = ret.concat(convertb64Block(block));
+				break;
+			}
+			else {
+				 var v3 = b64map.indexOf(third);
+				 if (v3 < 0) continue;
+				 block.push(v3);
+			}
+
+			var fourth = s.charAt(i+3);
+			if(fourth == b64padchar) {//Handle Block
+				ret = ret.concat(convertb64Block(block));
+				break;
+			}
+			else {
+				 var v4 = b64map.indexOf(fourth);
+				 if (v4 < 0) continue;
+				 block.push(v4);
+			}
+			ret = ret.concat(convertb64Block(block));//Handle Block
+		}
+
+		return ret;
+	}
+	
+	function convertb64Block(bytes) {
+		var ret = [];
+		var i = 0;
+		if (bytes.length == 4) {
+			ret.push(((bytes[i] & 0x3F) << 2) ^ ((bytes[i + 1] & 0x30) >>> 4));
+			ret.push(((bytes[i + 1] & 0xF) << 4) ^ ((bytes[i + 2] & 0x3C) >>> 2));
+			ret.push(((bytes[i + 2] & 0x3) << 6) ^ (bytes[i + 3] & 0xFF));
+		}
+		else if (bytes.length == 3) {
+			ret.push(((bytes[i] & 0x3F) << 2) ^ ((bytes[i + 1] & 0x30) >>> 4));
+			ret.push(((bytes[i + 1] & 0xF) << 4) ^ ((bytes[i + 2] & 0x3C)>>>2));
+		}
+		else if (bytes.length == 2) {
+			ret.push(((bytes[i] & 0x3F) << 2) ^ ((bytes[i+1] & 0x30)>>>4));
+		}
+
+		return ret;
+}
+}