openssl aes-128-cbc 用 nodejs 怎么写？ nodejs 的 crypto 库 vi 只认 16 位额……
lqzhgood 2021-02-08 19:20:59 +08:00 2729 次点击这是一个创建于 1710 天前的主题，其中的信息可能已经有所发展或是发生改变。
openssl enc -d -aes-128-cbc -in ./1qaz -K bc1f89d3421a6f097262c348890a9acc -out decrypted.jpg -iv bc1f89d3421a6f097262c348890a9acc 我用 nodejs 这么写，一直报错 Invalid IV length 求教。。。。
样本文件下载地址 https://netcut.cn/nodejs
const crypto = require("crypto"); const key = "bc1f89d3421a6f097262c348890a9acc"; const iv = key; const cipher = crypto.createCipheriv('aes-128-cbc', key, iv); const encryptedBytes = fs.readFileSync('./1qaz'); cipher.update(encryptedBytes); const data = cipher.final('hex'); console.log('data', data); 第 1 条附言 2021-02-08 20:26:52 +08:00
const encryptedBytes = fs.readFileSync('./1qaz'); const decipher = crypto.createCipheriv('aes-128-cbc', Buffer.from(key, 'hex'), Buffer.from(iv, 'hex')); const data = Buffer.concat([decipher.update(encryptedBytes), decipher.final()]); fs.writeFileSync('./test.jpg', data); 第 2 条附言 2021-02-08 20:40:45 +08:00
上面的附言里面 createDecipheriv 写成 createCipheriv 了………………
const key = "bc1f89d3421a6f097262c348890a9acc"; const iv = key; const encryptedBytes = fs.readFileSync('./1qaz'); const decipher = crypto.createDecipheriv('aes-128-cbc', Buffer.from(key, 'hex'), Buffer.from(iv, 'hex')); const data = Buffer.concat([decipher.update(encryptedBytes), decipher.final()]); fs.writeFileSync('./test.jpg', data); 再加个 stream 形式的， 留给后来人
const key = "bc1f89d3421a6f097262c348890a9acc"; const iv = key; let input = fs.createReadStream('./1qaz'); let output = fs.createWriteStream('test2.jpg'); const decipher = crypto.createDecipheriv('aes-128-cbc', Buffer.from(key, 'hex'), Buffer.from(iv, 'hex')); input.pipe(decipher).pipe(output); output.on('finish', () => { console.log('ok!!'); });  | 1 Mitt 2021-02-08 19:22:43 +08:00  1 128/8 = 16 |
 | 2 lqzhgood OP @Mitt openssl 是怎么把 32 位的 vi `bc1f89d3421a6f097262c348890a9acc` 处理成 16 位的呢。 |
| 3 Mitt 2021-02-08 19:24:53 +08:00 1 16 字节才是正确的，32 位是因为它是十六进制，你 hex2bin 就好了 |
 | 4 Jirajine 2021-02-08 19:28:06 +08:00 via Android 1 显然 key 接受的类型是二进制数据，而不是字符串。 |
| 5 lqzhgood OP @Jirajine Nodejs http://nodejs.cn/api/crypto.html#crypto_crypto_createcipheriv_algorithm_key_iv_options 不是说 key 支持 String 类型么~ |
| 6 lqzhgood OP @Mitt 能再说清楚点么？ 我把 key 写为 Buffer.from([ 0xbc, 0x1f, 0x89, 0xd3, 0x42, 0x1a, 0x6f, 0x09, 0x72, 0x62, 0xc3, 0x48, 0x89, 0x0a, 0x9a, 0xcc, ]) 还是无法解出~~ |
 | 7 EPr2hh6LADQWqRVH 2021-02-08 20:03:35 +08:00 1 @lqzhgood Buffer.from('bc1f89d3421a6f097262c348890a9acc', 'hex'), 他俩类型都统一成 Buffer |
| 8 Jirajine 2021-02-08 20:03:42 +08:00 1 > Both arguments must be 'utf8' encoded strings 这里的意思应该是指把 string 看作 utf8 encoded bytes, 而你这里显然不是。 改成 const cipher = crypto.createCipheriv('aes-128-cbc', Buffer.from(key,'hex'), Buffer.from(iv,'hex')); 只能说文档比较糟糕，缺乏例子且描述较为模糊。 |
| 10 lqzhgood OP |
 | 11 xxcheng 2021-12-23 23:20:30 +08:00 太感谢了 |
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