/// <summary>
/// The cookie value's bindings.
/// </summary>
public static string GetSalt(this HttpContext context, ICaptchaCryptoProvider captchaProtectionProvider)
{
var ip = context.Connection.RemoteIpAddress;
var userAgent = (string)context.Request.Headers[HeaderNames.UserAgent];
var issueDate = DateTime.Now.ToString("yyyy_MM_dd", CultureInfo.InvariantCulture);
var name = typeof(ProvidersExtensions).Name;
var salt = $"::{issueDate}::{name}::{ip}::{userAgent}";
return(captchaProtectionProvider.Hash(salt).HashString);
}
/// <summary>
/// Serialize the given data to an string.
/// </summary>
public string Serialize(object data)
{
var resultBytes = JsonSerializer.SerializeToUtf8Bytes(data,
new JsonSerializerOptions {
WriteIndented = false, IgnoreNullValues = true
});
var token = _captchaProtectionProvider.Hash(Encoding.UTF8.GetString(resultBytes)).HashString;
_distributedCache.Set(token, resultBytes, new DistributedCacheEntryOptions
{
AbsoluteExpiration = DateTimeOffset.UtcNow.AddMinutes(_options.AbsoluteExpirationMinutes)
});
return(token);
}
/// <summary>
/// Serialize the given data to an string.
/// </summary>
public string Serialize(object data)
{
var result = JsonSerializer.Serialize(data,
new JsonSerializerOptions {
WriteIndented = false, IgnoreNullValues = true
});
var token = _captchaProtectionProvider.Hash(result).HashString;
_memoryCache.Set(token, result, new MemoryCacheEntryOptions
{
AbsoluteExpiration = DateTimeOffset.UtcNow.AddMinutes(_options.AbsoluteExpirationMinutes),
Size = 1 // the size limit is the count of entries
});
return(token);
}
/// <summary>
/// The cookie value's bindings.
/// </summary>
public static string GetSalt(this HttpContext context, ICaptchaCryptoProvider captchaProtectionProvider)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (captchaProtectionProvider == null)
{
throw new ArgumentNullException(nameof(captchaProtectionProvider));
}
var userAgent = (string)context.Request.Headers[HeaderNames.UserAgent];
var issueDate = DateTime.Now.ToString("yyyy_MM_dd", CultureInfo.InvariantCulture);
var name = typeof(ProvidersExtensions).Name;
var salt = $"::{issueDate}::{name}::{userAgent}";
return(captchaProtectionProvider.Hash(salt).HashString);
}
