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AngularJS is a JavaScript framework. It can be added to HTML pages via the <script> tag.
AngularJS extends HTML through directives and binds data to HTML through expressions.
angularJS is an excellent js development framework promoted by Google...
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Encryption is common in applications. I personally recommend implementing encryption signatures on the front end (whether front end encryption is necessary from Zhihu: http://www.zhihu.com/question/25539382)
A brief explanation of the encryption algorithms of base64, md5, and sha1:
1. Base64 is a reversible and symmetric encryption algorithm; base64 has a basic character set composed of 64 basic characters.
Base64 encryption principle:
a. Base64 is a group of 3 bytes, and one byte occupies 8 bits (bit)
b. Divide 24 bits into four groups, each with 6 bits.
c. Then add 00 in each group of high two digits, expand to 32 bits, forming four bytes
2. md5 signature is an irreversible message digest algorithm; that is, it cannot be decrypted (from ciphertext to plaintext) (please refer to Baidu: http://baike.baidu.com/view/7636.htm) MD5 will generate a 128-bit message digest
a. Fill: First, the information needs to be filled so that the result of the remaining balance of its bit length pair 512 is equal to 448;
b. Initialization variable: The initial 128-bit value is the initial trial link variable. These parameters are used in the first round of operations and are expressed in big-endian endian endianness. They are: A=0x01234567, B=0x89ABCDEF, C=0xFEDCBA98, D=0x76543210
c. Processing grouped data
d. Output: The output is a cascade of a, b, c and d
3. Sha1 signature is an irreversible digital signature algorithm (please refer to Baidu: http://baike.baidu.com/view/1228622.htm) SHA1 will generate a 160-bit message digest.
a. Fill: First, the information needs to be filled so that the result of the remaining balance of its bit length pair 512 is equal to 448;
b. Complement length: The so-called complement length is to fill the length of the original data behind the message that the fill operation has been performed.
c. Constants used
d. Functions used: In SHA1 we need a series of functions. Each function ft (0 <= t <= 79) operates 32-bit words B, C, D and generates 32-bit words as output
e. Calculate message summary: The message summary must be calculated using messages after filling and length replacement.
Login control module:
Service module:
var encryption = angular.module('Encryption', []);encryption.service('Md5', function(){var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode *//*** Methods for external calls*/this.hex_md5 = function(s) { return binl2hex(core_md5(str2binl(s), s.length * chrsz));}/** Calculate the MD5 of an array of little-endian words, and a bit length*/function core_md5(x, len) {/* append padding */x[len >> 5] |= 0x80 << ((len) % 32);x[(((len + 64) >>> 9) << 4) + 14] = len;var a = 1732584193;var b = -271733879;var c = -1732584194;var d = 271733878;for(var i = 0; i < x.length; i += 16){var old = a;var oldb = b;var oldc = c;var oldd = d;a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);c = md5_ff(c, d, a, b, x[i+10], 17, -42063);b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);c = md5_gg(c, d, a, b, x[i+ 1], 14, 643717713);b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);d = md5_gg(d, a, b, c, d, x[i+ 5], 5 , -701558691);d = md5_gg(d, a, b, c, c, x[i+10], 9 , 38016083);c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);b = md5_gg(b, c, d, a, x[i+4], 20, -405537848);a = md5_gg(a, b, c, d, x[i+9], 5 , 568446438);d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);c = md5_gg(c, d, a, b, x[i+3], 14, -187363961);b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);d = md5_gg(b, c, d, a, x[i+ 5], 4 , -378558);d = md5_gg(b, c, d, a, x[i+ 5], 4 , -378558);d = md5_gg(b, c, d, a, x[i+ 12], 20, -1926607734);a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);a = md5_hh(a, b, c, d, x[i+ 6], 23, 76029189);a = md5_hh(a, b, c, d, x[i+ 6], 23, 76029189);a = md5_hh(a, b, c, d, x[i+ 0], 11, -358537222);c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);a = md5_hh(a, b, c, d, x[i+ 6], 23, 76029189);a = md5_hh(a, b, c, d, x[i+ 6], 23, 76029189);a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);a = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);a = safe_add(a, olda);b = safe_add(b, oldb);c = safe_add(c, oldc);d = safe_add(d, oldd);}return Array(a, b, c, d);}}).service('Base64', function(){_keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";// public method for encodingthis.encode = function (input) {var output = "";var chr1, chr2, chr3, enc1, enc2, enc3, enc4;var i = 0;input = _utf8_encode(input);while (i < input.length) {chr1 = input.charCodeAt(i++);chr2 = input.charCodeAt(i++);chr3 = input.charCodeAt(i++);enc1 = chr1 >> 2;enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);enc4 = chr3 & 63;if (isNaN(chr2)) {enc3 = enc4 = 64;} else if (isNaN(chr3)) {enc4 = 64;}output = output +_keyStr.charAt(enc1) + _keyStr.charAt(enc2) +_keyStr.charAt(enc3) + _keyStr.charAt(enc4);}return output;}// private method for UTF-8 encoding_utf8_encode = function (string) {string = string.replace(//r/n/g,"/n");var utftext = "";for (var n = 0; n < string.length; n++) {var c = string.charCodeAt(n);if (c < 128) {utftext += String.fromCharCode(c);} else if((c > 127) && (c < 2048)) {utftext += String.fromCharCode((c >> 6) | 192);utftext += String.fromCharCode((c & 63) | 128);} else {utftext += String.fromCharCode((c >> 12) | 224);utftext += String.fromCharCode((c >> 6) & 63) | 128);utftext += String.fromCharCode((c & 63) | 128);}}return utftext;}}).service('Sha1', function(){var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode *//* * Methods for external calls*/this.hex_sha1 = function (s) {return binb2hex(core_sha1(str2binb(s), s.length * chrsz));}/* * Calculate the SHA-1 of an array of big-endian words, and a bit length */function core_sha1(x, len) {/* append padding */x[len >> 5] |= 0x80 << (24 - len % 32);x[((len + 64 >> 9) << 4) + 15] = len;var w = Array(80);var a = 1732584193;var b = -271733879;var c = -1732584194;var d = 271733878;var e = -1009589776;for (var i = 0; i < x.length; i += 16) {var old = a;var oldb = b;var oldc = c;var oldd = d;var old = e;for (var j = 0; j < 80; j++) {if (j < 16) w[j] = x[i + j];else w[j] = rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);var t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)), safe_add(safe_add(e, w[j]), sha1_kt(j)));e = d;d = c;c = rol(b, 30);b = a;a = t;}a = safe_add(a, olda);b = safe_add(b, oldb);c = safe_add(c, oldc);d = safe_add(d, old);e = safe_add(e, old);} return Array(a, b, c, d, e);} })File structure:
The above is the implementation signature and encryption of AngularJs custom service introduced to you by the editor. I hope it will be helpful to you. If you have any questions, please leave me a message and the editor will reply to you in time. Thank you very much for your support to Wulin.com website!