From ccbf44e3fc35dcb7cdd02e21536a81c28be704b7 Mon Sep 17 00:00:00 2001
From: khiem20tc <khiem20tc@gmail.com>
Date: Mon, 9 Oct 2023 21:09:06 +0700
Subject: [PATCH] chore(key): add key utils

---
 utils/key/key.go | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 utils/key/key.go

diff --git a/utils/key/key.go b/utils/key/key.go
new file mode 100644
index 0000000..c14d1a0
--- /dev/null
+++ b/utils/key/key.go
@@ -0,0 +1,46 @@
+package key
+
+import (
+	"crypto/rand"
+	"math/big"
+	"sync"
+)
+
+const (
+	// Define the character sets for API key and API secret.
+	apiKeyCharset    = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	apiSecretCharset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789@#$%&?"
+	apiKeyLength     = 32  // Adjust the length as needed.
+	apiSecretLength  = 128 // Adjust the length as needed.
+)
+
+func GenerateAPIKey() (string, string) {
+	apiKey, secretKey := "", ""
+	wg := sync.WaitGroup{}
+	wg.Add(2)
+	go func() {
+		defer wg.Done()
+		apiKey = generateRandomString(apiKeyCharset, apiKeyLength)
+	}()
+	go func() {
+		defer wg.Done()
+		secretKey = generateRandomString(apiSecretCharset, apiSecretLength)
+	}()
+	wg.Wait()
+	return apiKey, secretKey
+}
+
+func generateRandomString(charset string, length int) string {
+	// Calculate the maximum index in the charset.
+	maxIndex := big.NewInt(int64(len(charset)))
+
+	// Generate random indices and create the string.
+	var result string
+	for i := 0; i < length; i++ {
+		index, _ := rand.Int(rand.Reader, maxIndex)
+
+		result += string(charset[index.Int64()])
+	}
+
+	return result
+}