首先让我说我对密码学很陌生。我正在尝试在 Node.js中实现密码块链接模式。
我的问题是,在没有解密的加密之后,它停止为一个解密函数调用工作。这是我的代码:
var crypto = require('crypto');
var encryptionMethod = 'aes-256-cbc';
var vector = new Buffer([0xF1, 0x4C, 0xB6, 0xBD, 0x82, 0x93, 0x3C, 0x97, 0x6A, 0x4B, 0x4A, 0xD2, 0xAD, 0xD5, 0xA8, 0x6D]);
var key = new Buffer([59, 92, 128, 239, 136, 26, 19, 26, 226, 234, 53, 71, 157, 113, 209, 96, 111, 83, 167, 123, 217, 107, 124, 31, 238, 176, 58, 110, 161, 82, 81, 69]);
var cipher = crypto.createCipheriv(encryptionMethod, key, vector);
cipher.setAutoPadding(false);
var decipher = crypto.createDecipheriv(encryptionMethod, key, vector);
decipher.setAutoPadding(false);
var encrypt = function(array) {
return cipher.update(new Buffer(array));
};
var decrypt = function(buffer) {
return decipher.update(buffer);
};
var data = [];
for (var i = 0; i < 32; i++) {
data.push(i);
}
// no problem here (probably because the vector updates itself?)
console.log(decrypt(encrypt(data))); // <Buffer 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f>
console.log(decrypt(encrypt(data))); // <Buffer 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f>
console.log(decrypt(encrypt(data))); // <Buffer 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f>
// after one encryption without a decryption it stops working.
console.log((encrypt(data)));
// why can't this be decrypted correctly? The last 16 entries are correct.
console.log(decrypt(encrypt(data))); // <Buffer e2 df 50 63 c7 eb 06 4c 28 19 6d 04 41 bd c0 db 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f>
// expected result
console.log(decrypt(encrypt(data))); // <Buffer 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f>
请参阅console.log
电话上方的评论以获取更多信息。如何确保该decrypt
功能始终有效?