文本加密

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1const crypto = require('crypto');

2function aesEncrypt(data,key,iv){

3    let cipher = crypto.createCipheriv('aes-128-cbc', key, iv);

4  return cipher.update(data, 'utf8', 'hex')+cipher.final('hex');

5}

6function aesDecrypt(crypted,key,iv){

7    let decipher = crypto.createDecipheriv('aes-128-cbc', key, iv);

8  return decipher.update(crypted, 'hex', 'utf8')+decipher.final('utf8');

9}

10let key = '1234567891234567';

11let iv = '1234567891234567';

12let text = 'hello world';

13let enc = aesEncrypt(text,key,iv);

14console.log(aesDecrypt(enc,key,iv));

15

文件加密

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1const crypto = require('crypto');

2const fs = require('fs');

3let key = '1234567891234567';

4let iv = '1234567891234567';

5let path = __dirname+'/files/blockchain-cat.pdf';

6let enPath = __dirname+'/encrypt/blockchain-cat.pdf';

7let dePath = __dirname+'/decrypt/blockchain-cat.pdf';

8

9function aesEncryptNew(buff,key,iv){

10  let cipher = crypto.createCipheriv('aes-128-cbc', key, iv);

11  return cipher.update(buff,'','hex')+cipher.final('hex');

12}

13function aesDecryptNew(buff,key,iv){

14  let decipher = crypto.createDecipheriv('aes-128-cbc', key, iv);

15  return decipher.update(buff,'','hex')+decipher.final('hex');

16}

17

18let buff = fs.readFileSync(path);

19let buffEnc = aesEncryptNew(buff,key,iv);

20fs.writeFileSync(enPath,new Buffer(buffEnc,'hex'));

21

22hexContent = fs.readFileSync(enPath);

23let deHex = aesDecryptNew(hexContent,key,iv);

24fs.writeFileSync(dePath,new Buffer(deHex,'hex'));

25