san*_*ich 3 hash typescript deno
我知道如何在 Python 中做到这一点。
#!/usr/bin/python
import sys
import os
import hashlib
import hmac
import base64
secretKey = bytes("passw@rd", 'UTF-8')
message = bytes(f'hello world\nhello deno', 'UTF-8')
encryptedKey = base64.b64encode(hmac.new(secretKey, message, digestmod=hashlib.sha256).digest())
print(encryptedKey)
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但我不知道如何在 den 中做到这一点。我希望在 deno 中得到与上面的 python 代码相同的结果。
您可以借助内置 crypto.subtle 工具(自 2021 年中期开始提供)创建 HMAC-SHA256 哈希,如下所示:
import { encode, decode } from "https://deno.land/std/encoding/base64.ts"
// just an example of the data for which we create an HMAC
const message = "hello world\nhello deno"
const encoder = new TextEncoder()
const secretKey = "passw@rd";
const keyBuf = encoder.encode(secretKey);
const key = await crypto.subtle.importKey(
"raw",
keyBuf,
{name: "HMAC", hash: "SHA-256"},
true,
["sign", "verify"],
)
const data = encoder.encode(message);
const result = await crypto.subtle.sign("HMAC", key , data.buffer);
console.log(encode(new Uint8Array(result)));
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kqfsOD/HMHBRL9F1Si4Y/qo9PCw2csuwXIGZK/P1IWc=
如果目标只是验证现有签名,您可以将解码后的签名传递给函数verify:
// validation of a received hmac-code
const hmacBase64 = "kqfsOD/HMHBRL9F1Si4Y/qo9PCw2csuwXIGZK/P1IWc=";
const hmacDecoded = decode(hmacBase64); // Base64 decoding
const verified = await crypto.subtle.verify("HMAC", key, hmacDecoded, data.buffer);
console.log("The signature is " + (verified? "": "in") + "valid");
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签名有效
在 Deno 中引入 crypto.subtle 之前,有两种基于外部包的选择:
您可以使用God Crypto,但这需要额外的 Base64 模块。重要提示:God Crypto 所有者已停止维护该软件包,因此不建议再使用。
import { hmac } from "https://deno.land/x/god_crypto@v1.4.10/mod.ts"
import * as base64 from "https://deno.land/x/base64@v0.2.1/mod.ts"
let secretKey = "passw@rd"
let message = "hello world\nhello deno"
const result: string = base64.fromUint8Array(hmac("sha256", secretKey, message))
console.log(result)
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kqfsOD/HMHBRL9F1Si4Y/qo9PCw2csuwXIGZK/P1IWc=
或者您可以使用更方便的hmac模块,它集成了“base64”、“utf8”和“hex”的输出编码:
import { hmac } from "https://deno.land/x/hmac@v2.0.1/mod.ts";
let secretKey = "passw@rd"
let message = "hello world\nhello deno"
const result = hmac("sha256", secretKey , message , "utf8", "base64");
console.log(result)
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kqfsOD/HMHBRL9F1Si4Y/qo9PCw2csuwXIGZK/P1IWc=
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