sha256 base64

[lscool66]

Question

import hashlib
import base64
import hmac

def gen_sign(timestamp, secret):
    # 拼接timestamp和secret
    string_to_sign = '{}\n{}'.format(timestamp, secret)
    print(string_to_sign)
    hmac_code = hmac.new(string_to_sign.encode("utf-8"), digestmod=hashlib.sha256).digest()

    print(hmac_code)

    # 对结果进行base64处理
    sign = base64.b64encode(hmac_code).decode('utf-8')

    return sign

let secret = "123"
let timestamp = (date now | into int | into string | str substring 0..10)
let sign = ($timestamp + "\n" + $secret | hash sha256 | encode base64)

python 和 nu 的结果不一致请问应该如何写nu

Additional context and details

No response

[fdncred]

I'm not sure exactly but it looks like it may have something to do with how hmac and base64 are being used. hmac is producing binary data. To do something similar, you'd need to do hash sha256 --binary. You also need to understand how base64.b64encode is being used so you can use the same parameters in nushell. We allow character sets. You can see this with encode base64 --help.

[lscool66]

func GenSign(secret string, timestamp int64) (string, error) {
 //timestamp + key 做sha256, 再进行base64 encode
 stringToSign := fmt.Sprintf("%v", timestamp) + "\n" + secret

 var data []byte
 h := hmac.New(sha256.New, []byte(stringToSign))
 _, err := h.Write(data)
 if err != nil {
    return "", err
 }

 signature := base64.StdEncoding.EncodeToString(h.Sum(nil))
 return signature, nil
}

我这边使用go的交叉编译来解决这个问题