Generate Access Token
Implementation Examples of Access Token Generation in Various Programming Languages
Create access token by using HMAC-SHA256
An access token can be generated by combining the api_key and timestamp string with the provided api_secret.
Attribute
Description
api_key
Get it from your PAVE Developer dashboard
api_secret
Get it from your PAVE Developer dashboard
timestamp
UTC Datetime string, example: 2021-05-30T12:49:19Z
Examples in Different Languages:
$token = hash_hmac('sha256', '<username>:<api_key>@<timestamp>', '<api_secret');
// https://www.php.net/manual/en/function.hash-hmac.phpconst crypto = require('crypto');
const apiKey = 'your_api_key';
const apiSecret = 'your_api_secret';
const username = 'your_username';
const timestamp = (new Date()).toJSON();
const message = `${username}:${apiKey}@${timestamp}`;
const accessToken = crypto.createHmac('sha256', apiSecret).update(message).digest('hex');import hashlib
import hmac
from datetime import datetime, timezone
api_key = 'your_api_key'
api_secret = 'your_api_secret'
username = 'your_username'
timestamp = datetime.now(timezone.utc).isoformat()
message = f'{username}:{api_key}@{timestamp}'
access_token = hmac.new(api_secret.encode('utf-8'), msg=message.encode('utf-8'), digestmod=hashlib.sha256).hexdigest()package main
import (
"crypto/hmac"
"crypto/sha256"
"encoding/hex"
"fmt"
"time"
)
func main() {
apiKey := "your_api_key"
apiSecret := "your_api_secret"
username := "your_username"
timestamp := time.Now().Format(time.RFC3339)
message := fmt.Sprintf("%s:%s@%d", username, apiKey, timestamp)
hmac := hmac.New(sha256.New, []byte(apiSecret))
hmac.Write([]byte(message))
access_token := hex.EncodeToString(hmac.Sum(nil))
fmt.Println(signature) // prints the HMAC-SHA256 signature
}import CommonCrypto
import Foundation
func hmacSha256(message: String, key: String) -> String {
let messageData = message.data(using: .utf8)!
let keyData = key.data(using: .utf8)!
var hmacData = Data(count: Int(CC_SHA256_DIGEST_LENGTH))
hmacData.withUnsafeMutableBytes { hmacPtr in
CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA256), (keyData as NSData).bytes, keyData.count, (messageData as NSData).bytes, messageData.count, hmacPtr)
}
return hmacData.map { String(format: "%02hhx", $0) }.joined()
}
let apiKey = "your_api_key"
let apiSecret = "your_api_secret"
let username = "your_username"
let dateFormatter = ISO8601DateFormatter()
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
let timestamp = dateFormatter.string(from: Date())
let message = "\(username):\(apiKey)@\(timestamp)"
let accessToken = hmacSha256(message: message, key: apiSecret)import java.nio.charset.StandardCharsets
import java.security.Key
import java.security.MessageDigest
import javax.crypto.Mac
import javax.crypto.spec.SecretKeySpec
import java.time.LocalDateTime
import java.time.OffsetDateTime
import java.time.ZoneOffset
import java.time.format.DateTimeFormatter
fun main() {
val apiKey = "your_api_key"
val apiSecret = "your_api_secret"
val username = "your_username"
val utcDateTime = LocalDateTime.now(ZoneOffset.UTC)
val offsetDateTime = OffsetDateTime.of(utcDateTime, ZoneOffset.UTC)
val formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ssXXX")
val timestamp = offsetDateTime.format(formatter)
val message = "$username:$apiKey@$timestamp"
val accessToken = hmacSha256(message, apiSecret)
}
fun hmacSha256(message: String, key: String): String {
val secretKey = SecretKeySpec(key.toByteArray(StandardCharsets.UTF_8), "HmacSHA256")
val mac = Mac.getInstance("HmacSHA256")
mac.init(secretKey)
val hmac = mac.doFinal(message.toByteArray(StandardCharsets.UTF_8))
return bytesToHex(hmac)
}
fun bytesToHex(bytes: ByteArray): String {
return bytes.joinToString("") { "%02x".format(it) }
}Last updated