generateSignatureOrToken static method
Implementation
static String generateSignatureOrToken(String message, String secret) {
final key = utf8.encode(secret);
final bytes = utf8.encode(message);
final hmacSha512 = Hmac(sha512, key); // Create HMAC with SHA-512
final digest = hmacSha512.convert(bytes);
return base64Encode(digest.bytes); // Return base64 string
}