3 APIの呼び出し方法

import base64
import datetime
import hashlib
import hmac
import urllib.parse

def generate_authorization_headers(access_key, secret_key, url, http_method):
    RFC7231_FORMAT = '%a, %d %b %Y %H:%M:%S GMT'
    xdate = datetime.datetime.utcnow().strftime(RFC7231_FORMAT)
    url_path = urllib.parse.urlparse(url).path
    signature = 'x-date: %s\n%s %s HTTP/1.1' % (xdate, http_method.upper(), url_path)
    crypto = hmac.new(secret_key.encode('utf-8'), signature.encode('utf-8'), hashlib.sha256)
    hmac_signature = base64.b64encode(crypto.digest()).decode('utf-8')
    authorization = '''hmac username="%s", algorithm="hmac-sha256", headers="x-date request-line", signature="%s"''' % (access_key, hmac_signature)
    return {
        "x-date": xdate,
        "Authorization": authorization
    }

//crypto-jsが必要です。 詳細はhttps://www.npmjs.com/package/crypto-jsを参照してください。

function generate_authorization_headers(access_key, secret_key, url, http_method) {
    var today = new Date();
    var xdate = today.toGMTString();
    var reg = /.+?\:\/\/.+?(\/.+?)(?:#|\?|$)/;
		var url_path = reg.exec(url)[1];
    var signature = "x-date: " + xdate + "\n" + http_method + " " + url_path + " HTTP/1.1";
    var hmac_signature = CryptoJS.HmacSHA256(signature, secret_key).toString(CryptoJS.enc.Base64);
    var authorization = "hmac username=\"" + access_key + "\", algorithm=\"hmac-sha256\", headers=\"x-date request-line\", signature=\"" + hmac_signature +  "\"";
    return "-H 'x-date: " + xdate + "' -H 'Authorization: " + authorization + "'";
}

import java.text.SimpleDateFormat
import java.util.*
import javax.crypto.Mac
import javax.crypto.spec.SecretKeySpec
import java.net.URL

fun generate_authorization_headers(
     access_key: String,
     secret_key: String,
     url: String,
     http_method: String): Pair<String, String> {
    val rfc7231 = SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss 'GMT'", Locale.US).apply {
        isLenient = false
        timeZone = TimeZone.getTimeZone("UTC")
    }
    val xDate = rfc7231.format(Date())
    val url_path = URL(url).getPath()
    val encodeData = "x-date: $xDate\n$http_method $url_path HTTP/1.1"
    val sha256Hmac = Mac.getInstance("HmacSHA256")
    val secretKey = SecretKeySpec(secret_key.toByteArray(), "HmacSHA256")
    sha256Hmac.init(secretKey)
    val signature = Base64.getEncoder().encodeToString(sha256Hmac.doFinal(encodeData.toByteArray()))
    val authorization = "hmac username=\"${access_key}\", algorithm=\"hmac-sha256\", headers=\"x-date request-line\", signature=\"${signature}\""
    return Pair(xDate,authorization)
}