原生js的RSA和AES加密解密

2015/04/06 50812

清华大佬耗费三个月吐血整理的几百G的资源，免费分享！....>>>

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
<!doctype html>
<html>
    <head>
        <meta charset='UTF-8'>
    </head>
    <body>
        <div class='test'></div>
        <script type="text/javascript">
   
            function encrypt(data, keyJSON){
                var data = new TextEncoder("UTF-8").encode(data);
                var randomsKeys = geneRandomHexStr(64); // 128 bit keys
                var encryptedKey = hexStringToUint8Array(randomsKeys);
                var aesAlgo = {name: 'aes-cbc', iv: hexStringToUint8Array("000102030405060708090a0b0c0d0e0f")};
                return crypto.subtle.importKey("jwk", keyJSON, {name: "rsa-oaep", hash: {name: "sha-256"}},true, ['encrypt'])
                    .then(function(publicKey){
                        return crypto.subtle.encrypt({name: "rsa-oaep"}, publicKey, encryptedKey);
                    }).then(function(res){
                        encryptedKey = bytesToHexString(res)
                        // use aes to encrypt data
                        // import aes key
                        return crypto.subtle.importKey('raw',
                            hexStringToUint8Array(randomsKeys) , aesAlgo, false, ['encrypt', 'decrypt']);
                           
                    }).then(function(result){
                        // use aes to encode
                        return crypto.subtle.encrypt(aesAlgo,
                         result, data);
                    }).then(function(encryptedData){
                        return Promise.resolve({
                            'encrypted': bytesToHexString(encryptedData),
                            'encryptedKey': encryptedKey,
                        });
                    });
   
                //console.log(new TextDecoder("UTF-8").decode(data));
                // use server public key to encrypt
                   
            }
   
            function decrypt(data, keyJSON){
                // use local private key to decrypt
                var encryptedKey = new hexStringToUint8Array(data.encryptedKey);
                var encryptedData = new hexStringToUint8Array(data.encrypted);
                var aesAlgo = {name: 'aes-cbc', iv: hexStringToUint8Array("000102030405060708090a0b0c0d0e0f")};
                // decrypt key
                return crypto.subtle.importKey('jwk', keyJSON, {name: "rsa-oaep", hash: {name: "sha-256"}}, true,
                    ['decrypt']).then(function(privateKey){
                        return crypto.subtle.decrypt({name: 'rsa-oaep'}, privateKey, encryptedKey);
                    }).then(function(decryptedKey){
                        // import aes key
                        return crypto.subtle.importKey('raw',
                            decryptedKey, aesAlgo, false, ['encrypt', 'decrypt']);
                    }).catch(function(){
                        console.error("decrypt error");
                    }).then(function(result){
                        // decode encrypted data
                        return crypto.subtle.decrypt(aesAlgo, result, encryptedData);
                    }).then(function(data){
                        return Promise.resolve(new TextDecoder("UTF-8").decode(new Uint8Array(data)));
                    })
   
            }
   
            function createNewUserKey(){
                var algorithmKeyGen = {
                    name: "RSA-OAEP",
                    hash: {name: "sha-256"},
                    // RsaKeyGenParams
                    modulusLength: 2048,
                    publicExponent: new Uint8Array([0x01, 0x00, 0x01]),  // Equivalent to 65537
                };
                var nonExtractable = false;
                   
                var publicKey = "";
                var privateKey = "";
                var keyPairs = "";
                return crypto.subtle.generateKey(algorithmKeyGen, true, ['encrypt', 'decrypt']).then(function(result) {
                    // gene key pair
                    keyPairs = result;
                    return Promise.all([crypto.subtle.exportKey("jwk", keyPairs.publicKey),
                        crypto.subtle.exportKey("jwk", keyPairs.privateKey)]);
                })
                   
            }
   
            function _arrayBufferToBase64( buffer ) {
                var binary = '';
                var bytes = new Uint8Array( buffer );
                var len = bytes.byteLength;
                for (var i = 0; i < len; i++) {
                    binary += String.fromCharCode( bytes[ i ] );
                }
                return window.btoa( binary );
            }
   
            function hexStringToUint8Array(hexString) {
                if (hexString.length % 2 != 0)
                    throw "Invalid hexString";
                var arrayBuffer = new Uint8Array(hexString.length / 2);
                for (var i = 0; i < hexString.length; i += 2) {
                    var byteValue = parseInt(hexString.substr(i, 2), 16);
                    if (byteValue == NaN)
                        throw "Invalid hexString";
                    arrayBuffer[i/2] = byteValue;
                }
                return arrayBuffer;
            }
   
            function bytesToHexString(bytes) {
                if (!bytes)
                    return null;
                bytes = new Uint8Array(bytes);
                var hexBytes = [];
                for (var i = 0; i < bytes.length; ++i) {
                    var byteString = bytes[i].toString(16);
                    if (byteString.length < 2)
                        byteString = "0" + byteString;
                    hexBytes.push(byteString);
                }
                return hexBytes.join("");
            }
   
            function geneRandomHexStr(length){
                var text = "";
                var possible = "0123456789abcdef";
   
                for( var i=0; i < length; i++ )
                    text += possible.charAt(Math.floor(Math.random() * possible.length));
   
                return text;
            }
   
            createNewUserKey().then(function(keyPairs){
                encrypt("this is origin text", keyPairs[0]).then(function(res){
                    console.log('public', JSON.stringify(keyPairs[0]));
                    console.log('private', JSON.stringify(keyPairs[1]));
                    decrypt(res, keyPairs[1]).then(function(decrypted){
                        console.log('decrypted', decrypted);
                    });
                });
            })
   
        </script>
    </body>
</html>