blowfish.js

OA系统实现以下功能： a、个人办公,我的办公桌 b、公文管理 c、工作流程 d、组织管理 e. 权限管理

		for (var i = 0; i < l; ) {
			var t = tab.indexOf(s[i++]) << 18 | tab.indexOf(s[i++]) << 12 | tab.indexOf(s[i++]) << 6 | tab.indexOf(s[i++]);
			out.push((t >>> 16) & 255);
			out.push((t >>> 8) & 255);
			out.push(t & 255);
		}
		return out;
	}
	this.getIV = function (outputType) {
		var out = outputType || dojo.crypto.outputTypes.Base64;
		switch (out) {
		  case dojo.crypto.outputTypes.Hex:
			var s = [];
			for (var i = 0; i < iv.length; i++) {
				s.push((iv[i]).toString(16));
			}
			return s.join("");
		  case dojo.crypto.outputTypes.String:
			return iv.join("");
		  case dojo.crypto.outputTypes.Raw:
			return iv;
		  default:
			return toBase64(iv);
		}
	};
	this.setIV = function (data, inputType) {
		var ip = inputType || dojo.crypto.outputTypes.Base64;
		var ba = null;
		switch (ip) {
		  case dojo.crypto.outputTypes.String:
			ba = [];
			for (var i = 0; i < data.length; i++) {
				ba.push(data.charCodeAt(i));
			}
			break;
		  case dojo.crypto.outputTypes.Hex:
			ba = [];
			var i = 0;
			while (i + 1 < data.length) {
				ba.push(parseInt(data.substr(i, 2), 16));
				i += 2;
			}
			break;
		  case dojo.crypto.outputTypes.Raw:
			ba = data;
			break;
		  default:
			ba = fromBase64(data);
			break;
		}
		iv = {};
		iv.left = ba[0] * POW24 | ba[1] * POW16 | ba[2] * POW8 | ba[3];
		iv.right = ba[4] * POW24 | ba[5] * POW16 | ba[6] * POW8 | ba[7];
	};
	this.encrypt = function (plaintext, key, ao) {
		var out = dojo.crypto.outputTypes.Base64;
		var mode = dojo.crypto.cipherModes.EBC;
		if (ao) {
			if (ao.outputType) {
				out = ao.outputType;
			}
			if (ao.cipherMode) {
				mode = ao.cipherMode;
			}
		}
		var bx = init(key);
		var padding = 8 - (plaintext.length & 7);
		for (var i = 0; i < padding; i++) {
			plaintext += String.fromCharCode(padding);
		}
		var cipher = [];
		var count = plaintext.length >> 3;
		var pos = 0;
		var o = {};
		var isCBC = (mode == dojo.crypto.cipherModes.CBC);
		var vector = {left:iv.left || null, right:iv.right || null};
		for (var i = 0; i < count; i++) {
			o.left = plaintext.charCodeAt(pos) * POW24 | plaintext.charCodeAt(pos + 1) * POW16 | plaintext.charCodeAt(pos + 2) * POW8 | plaintext.charCodeAt(pos + 3);
			o.right = plaintext.charCodeAt(pos + 4) * POW24 | plaintext.charCodeAt(pos + 5) * POW16 | plaintext.charCodeAt(pos + 6) * POW8 | plaintext.charCodeAt(pos + 7);
			if (isCBC) {
				o.left = xor(o.left, vector.left);
				o.right = xor(o.right, vector.right);
			}
			eb(o, bx);
			if (isCBC) {
				vector.left = o.left;
				vector.right = o.right;
				dojo.crypto.outputTypes.Hex;
			}
			cipher.push((o.left >> 24) & 255);
			cipher.push((o.left >> 16) & 255);
			cipher.push((o.left >> 8) & 255);
			cipher.push(o.left & 255);
			cipher.push((o.right >> 24) & 255);
			cipher.push((o.right >> 16) & 255);
			cipher.push((o.right >> 8) & 255);
			cipher.push(o.right & 255);
			pos += 8;
		}
		switch (out) {
		  case dojo.crypto.outputTypes.Hex:
			var s = [];
			for (var i = 0; i < cipher.length; i++) {
				s.push((cipher[i]).toString(16));
			}
			return s.join("");
		  case dojo.crypto.outputTypes.String:
			return cipher.join("");
		  case dojo.crypto.outputTypes.Raw:
			return cipher;
		  default:
			return toBase64(cipher);
		}
	};
	this.decrypt = function (ciphertext, key, ao) {
		var ip = dojo.crypto.outputTypes.Base64;
		var mode = dojo.crypto.cipherModes.EBC;
		if (ao) {
			if (ao.outputType) {
				ip = ao.outputType;
			}
			if (ao.cipherMode) {
				mode = ao.cipherMode;
			}
		}
		var bx = init(key);
		var pt = [];
		var c = null;
		switch (ip) {
		  case dojo.crypto.outputTypes.Hex:
			c = [];
			var i = 0;
			while (i + 1 < ciphertext.length) {
				c.push(parseInt(ciphertext.substr(i, 2), 16));
				i += 2;
			}
			break;
		  case dojo.crypto.outputTypes.String:
			c = [];
			for (var i = 0; i < ciphertext.length; i++) {
				c.push(ciphertext.charCodeAt(i));
			}
			break;
		  case dojo.crypto.outputTypes.Raw:
			c = ciphertext;
			break;
		  default:
			c = fromBase64(ciphertext);
			break;
		}
		var count = c.length >> 3;
		var pos = 0;
		var o = {};
		var isCBC = (mode == dojo.crypto.cipherModes.CBC);
		var vector = {left:iv.left || null, right:iv.right || null};
		for (var i = 0; i < count; i++) {
			o.left = c[pos] * POW24 | c[pos + 1] * POW16 | c[pos + 2] * POW8 | c[pos + 3];
			o.right = c[pos + 4] * POW24 | c[pos + 5] * POW16 | c[pos + 6] * POW8 | c[pos + 7];
			if (isCBC) {
				var left = o.left;
				var right = o.right;
			}
			db(o, bx);
			if (isCBC) {
				o.left = xor(o.left, vector.left);
				o.right = xor(o.right, vector.right);
				vector.left = left;
				vector.right = right;
			}
			pt.push((o.left >> 24) & 255);
			pt.push((o.left >> 16) & 255);
			pt.push((o.left >> 8) & 255);
			pt.push(o.left & 255);
			pt.push((o.right >> 24) & 255);
			pt.push((o.right >> 16) & 255);
			pt.push((o.right >> 8) & 255);
			pt.push(o.right & 255);
			pos += 8;
		}
		if (pt[pt.length - 1] == pt[pt.length - 2] || pt[pt.length - 1] == 1) {
			var n = pt[pt.length - 1];
			pt.splice(pt.length - n, n);
		}
		for (var i = 0; i < pt.length; i++) {
			pt[i] = String.fromCharCode(pt[i]);
		}
		return pt.join("");
	};
	this.setIV("0000000000000000", dojo.crypto.outputTypes.Hex);
}();