在尝试理解Node.js Crypto API时,我一直在尝试将代码与等效OpenSSL enc
命令行匹配(为了便于阅读而插入换行符),该命令行通过xxd
传递给十六进制显示。
$ echo -n "The quick brown fox jumps over the lazy dog" | openssl enc -aes256 -e
-K "a891f95cc50bd872e8fcd96cf5030535e273c5210570b3dcfa7946873d167c57"
-iv "3bbdce68b2736ed96972d56865ad82a2" | xxd -p -c 64
582178570b7b74b000fd66316379835809874f985e0facadabb5b9c6b00593171165ae21c091f5237cea1a6fd939fd14
但是,当我运行node test-aes.js
时,我得到以下输出:
b8f995c4eb9691ef726b81a03681c48e
哪个与我的预期输出不匹配(甚至是长度的三分之一)。这是我的test-aes.js
文件:
var crypto = require("crypto");
var testVector = { plaintext : "The quick brown fox jumps over the lazy dog",
iv : "3bbdce68b2736ed96972d56865ad82a2",
key : "a891f95cc50bd872e8fcd96cf5030535e273c5210570b3dcfa7946873d167c57",
ciphertext : "582178570b7b74b000fd66316379835809874f985e0facadabb5b9c6b00593171165ae21c091f5237cea1a6fd939fd14"};
var key = new Buffer(testVector.key, "hex");
var iv = new Buffer(testVector.iv, "hex");
var cipher = crypto.createCipher("aes256", key, iv);
cipher.update(testVector.plaintext, "utf8");
var crypted = cipher.final("hex");
console.log(crypted);
问题:我在将OpenSSL参数映射到Node.js加密API时出错了吗?
答案 0 :(得分:3)
这里你去:
var cipher = crypto.createCipheriv("aes256", key, iv);
var crypted = cipher.update(testVector.plaintext, "utf8", "hex");
crypted += cipher.final("hex");
console.log(crypted);
您的原始代码存在两个问题
createCipher
功能错误,您应该使用createCipheriv
。update
有一个返回值,您需要跟踪它。