1 files changed, 24 insertions, 0 deletions
diff --git a/LibMatrix/Abstractions/VersionedKeyId.cs b/LibMatrix/Abstractions/VersionedKeyId.cs
new file mode 100644
index 0000000..0a6d651
--- /dev/null
+++ b/LibMatrix/Abstractions/VersionedKeyId.cs
@@ -0,0 +1,24 @@
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+
+namespace LibMatrix.Abstractions;
+
+[DebuggerDisplay("{Algorithm}:{KeyId}")]
+[SuppressMessage("ReSharper", "NonReadonlyMemberInGetHashCode")]
+public class VersionedKeyId {
+    public required string Algorithm { get; set; }
+    public required string KeyId { get; set; }
+
+    public static implicit operator VersionedKeyId(string key) {
+        var parts = key.Split(':', 2);
+        if (parts.Length != 2) throw new ArgumentException("Invalid key format. Expected 'algorithm:keyId'.", nameof(key));
+        return new VersionedKeyId { Algorithm = parts[0], KeyId = parts[1] };
+    }
+
+    public static implicit operator string(VersionedKeyId key) => $"{key.Algorithm}:{key.KeyId}";
+    public static implicit operator (string, string)(VersionedKeyId key) => (key.Algorithm, key.KeyId);
+    public static implicit operator VersionedKeyId((string algorithm, string keyId) key) => (key.algorithm, key.keyId);
+
+    public override bool Equals(object? obj) => obj is VersionedKeyId other && Algorithm == other.Algorithm && KeyId == other.KeyId;
+    public override int GetHashCode() => HashCode.Combine(Algorithm, KeyId);
+}
\ No newline at end of file