| | | 1 | | using System.Text.Json; |
| | | 2 | | |
| | | 3 | | namespace LOCKnet.Core.DataAbstractions; |
| | | 4 | | |
| | | 5 | | /// <summary> |
| | | 6 | | /// Beschreibt die KDF-Konfiguration fuer einen Vault-Header. |
| | | 7 | | /// Die Parameter werden serialisiert gespeichert, damit kuenftige Unlocks |
| | | 8 | | /// denselben Ableitungsweg reproduzieren koennen. |
| | | 9 | | /// </summary> |
| | | 10 | | public sealed class VaultKdfParameters |
| | | 11 | | { |
| | | 12 | | /// <summary>Name des zugrunde liegenden Hash-Algorithmus.</summary> |
| | 2049 | 13 | | public string HashAlgorithm { get; set; } = "SHA256"; |
| | | 14 | | |
| | | 15 | | /// <summary>Anzahl der KDF-Iterationen.</summary> |
| | 1098 | 16 | | public int Iterations { get; set; } |
| | | 17 | | |
| | | 18 | | /// <summary>Ausgabegroesse des abgeleiteten Schluessels in Bytes.</summary> |
| | 2028 | 19 | | public int KeyLengthBytes { get; set; } = 32; |
| | | 20 | | |
| | | 21 | | /// <summary>Empfohlene Salt-Laenge in Bytes fuer neue Header.</summary> |
| | 2027 | 22 | | public int SaltLengthBytes { get; set; } = 32; |
| | | 23 | | |
| | | 24 | | /// <summary>Serialisiert die Parameter in JSON fuer die Persistenz.</summary> |
| | | 25 | | public string Serialize() |
| | 120 | 26 | | => JsonSerializer.Serialize(this); |
| | | 27 | | |
| | | 28 | | /// <summary>Deserialisiert einen JSON-String in KDF-Parameter.</summary> |
| | | 29 | | /// <param name="json">Der serialisierte JSON-String.</param> |
| | | 30 | | public static VaultKdfParameters Deserialize(string json) |
| | 127 | 31 | | { |
| | 127 | 32 | | ArgumentException.ThrowIfNullOrWhiteSpace(json); |
| | 127 | 33 | | return JsonSerializer.Deserialize<VaultKdfParameters>(json) |
| | 127 | 34 | | ?? throw new InvalidOperationException("KDF-Parameter konnten nicht deserialisiert werden."); |
| | 127 | 35 | | } |
| | | 36 | | } |