public async Task <Document> Deprotect(Document value, ProtectionKey key, CancellationToken cancellationToken = default)
{
try
{
if (!await IsProtected(value, cancellationToken))
{
return(value);
}
var bs = Convert.FromBase64String(value.Raw);
// var ky = Encoding.UTF8.GetBytes(key.Password);
// await using var ms = new MemoryStream(AesDecrypt(bs, ky));
await using var ms = new MemoryStream(bs);
return(await JsonSerializer.DeserializeAsync <Document>(ms, cancellationToken : cancellationToken)
?? throw new NullReferenceException("Null"));
}
catch (Exception ex)
{
throw new ProtectionException("Deprotect failed.", ex);
}
}
public async Task <Document> Protect(Document value, ProtectionKey key, CancellationToken cancellationToken = default)
{
try
{
byte[] bs;
await using (var ms = new MemoryStream())
{
await JsonSerializer.SerializeAsync(ms, value, cancellationToken : cancellationToken);
bs = ms.ToArray();
}
// var ky = Encoding.UTF8.GetBytes(key.Password); AesEncrypt(bs, ky)
return(new Document {
Tag = _protectFlag, Raw = Convert.ToBase64String(bs)
});
}
catch (Exception ex)
{
throw new ProtectionException("Protect failed.", ex);
}
}