Add cryptographic session key management for users

Introduces a new cryptographic key management system for user sessions, including models, DTOs, interfaces, and services for handling identity keys, signed pre-keys, and one-time pre-keys. Updates the SessionKeysController and DI configuration to use the new services. Adds related EF Core configurations and migrations, and updates the UserSession model to reference the new UserCryptoSession. Removes the obsolete ISessionKeyService interface.

Govor.Data/Migrations/GovorDbContextModelSnapshot.cs

@@ -145,12 +145,14 @@ namespace Govor.Data.Migrations
                         .HasColumnType("char(36)");
 
                     b.Property<Guid?>("InvitationId")
-                        .IsRequired()
                         .HasColumnType("char(36)");
 
                     b.Property<bool>("IsBanned")
                         .HasColumnType("tinyint(1)");
 
+                    b.Property<DateTime>("MemberSince")
+                        .HasColumnType("datetime(6)");
+
                     b.Property<Guid>("UserId")
                         .HasColumnType("char(36)");
 
@@ -364,40 +366,6 @@ namespace Govor.Data.Migrations
                     b.ToTable("PrivateChats");
                 });
 
-            modelBuilder.Entity("Govor.Core.Models.UserSession", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("char(36)");
-
-                    b.Property<DateTime>("CreatedAt")
-                        .HasColumnType("datetime(6)");
-
-                    b.Property<string>("DeviceInfo")
-                        .IsRequired()
-                        .HasMaxLength(200)
-                        .HasColumnType("varchar(200)");
-
-                    b.Property<DateTime>("ExpiresAt")
-                        .HasColumnType("datetime(6)");
-
-                    b.Property<bool>("IsRevoked")
-                        .HasColumnType("tinyint(1)");
-
-                    b.Property<string>("RefreshToken")
-                        .IsRequired()
-                        .HasColumnType("longtext");
-
-                    b.Property<Guid>("UserId")
-                        .HasColumnType("char(36)");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("UserId");
-
-                    b.ToTable("UserSessions");
-                });
-
             modelBuilder.Entity("Govor.Core.Models.Users.Admin", b =>
                 {
                     b.Property<Guid>("UserId")
@@ -408,6 +376,82 @@ namespace Govor.Data.Migrations
                     b.ToTable("Admins");
                 });
 
+            modelBuilder.Entity("Govor.Core.Models.Users.Crypto.OneTimePreKey", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)");
+
+                    b.Property<bool>("IsUsed")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("tinyint(1)")
+                        .HasDefaultValue(false);
+
+                    b.Property<byte[]>("PublicKey")
+                        .IsRequired()
+                        .HasColumnType("longblob");
+
+                    b.Property<DateTime>("UploadedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<Guid>("UserCryptoSessionId")
+                        .HasColumnType("char(36)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UploadedAt");
+
+                    b.HasIndex("UserCryptoSessionId", "IsUsed");
+
+                    b.ToTable("OneTimePreKeys");
+                });
+
+            modelBuilder.Entity("Govor.Core.Models.Users.Crypto.SignedPreKey", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)");
+
+                    b.Property<byte[]>("PublicSignedPreKey")
+                        .IsRequired()
+                        .HasColumnType("longblob");
+
+                    b.Property<byte[]>("SignedPreKeySignature")
+                        .IsRequired()
+                        .HasColumnType("longblob");
+
+                    b.Property<Guid>("UserCryptoSessionId")
+                        .HasColumnType("char(36)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserCryptoSessionId")
+                        .IsUnique();
+
+                    b.ToTable("SignedPreKeys");
+                });
+
+            modelBuilder.Entity("Govor.Core.Models.Users.Crypto.UserCryptoSession", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)");
+
+                    b.Property<byte[]>("PublicIdentityKey")
+                        .IsRequired()
+                        .HasColumnType("longblob");
+
+                    b.Property<Guid>("UserSessionId")
+                        .HasColumnType("char(36)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserSessionId")
+                        .IsUnique();
+
+                    b.ToTable("UserCryptoSessions");
+                });
+
             modelBuilder.Entity("Govor.Core.Models.Users.User", b =>
                 {
                     b.Property<Guid>("Id")
@@ -445,6 +489,40 @@ namespace Govor.Data.Migrations
                     b.ToTable("Users");
                 });
 
+            modelBuilder.Entity("Govor.Core.Models.Users.UserSession", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("DeviceInfo")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("varchar(256)");
+
+                    b.Property<DateTime>("ExpiresAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<bool>("IsRevoked")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("RefreshToken")
+                        .IsRequired()
+                        .HasColumnType("longtext");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("char(36)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("UserSessions");
+                });
+
             modelBuilder.Entity("Govor.Core.Models.Friendship", b =>
                 {
                     b.HasOne("Govor.Core.Models.Users.User", "Addressee")
@@ -501,8 +579,7 @@ namespace Govor.Data.Migrations
                     b.HasOne("Govor.Core.Models.GroupInvitation", null)
                         .WithMany()
                         .HasForeignKey("InvitationId")
-                        .OnDelete(DeleteBehavior.SetNull)
-                        .IsRequired();
+                        .OnDelete(DeleteBehavior.SetNull);
                 });
 
             modelBuilder.Entity("Govor.Core.Models.Messages.MediaAttachments", b =>
@@ -563,15 +640,6 @@ namespace Govor.Data.Migrations
                         .IsRequired();
                 });
 
-            modelBuilder.Entity("Govor.Core.Models.UserSession", b =>
-                {
-                    b.HasOne("Govor.Core.Models.Users.User", null)
-                        .WithMany()
-                        .HasForeignKey("UserId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-                });
-
             modelBuilder.Entity("Govor.Core.Models.Users.Admin", b =>
                 {
                     b.HasOne("Govor.Core.Models.Users.User", "User")
@@ -583,6 +651,39 @@ namespace Govor.Data.Migrations
                     b.Navigation("User");
                 });
 
+            modelBuilder.Entity("Govor.Core.Models.Users.Crypto.OneTimePreKey", b =>
+                {
+                    b.HasOne("Govor.Core.Models.Users.Crypto.UserCryptoSession", "UserCryptoSession")
+                        .WithMany("OneTimePreKeys")
+                        .HasForeignKey("UserCryptoSessionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("UserCryptoSession");
+                });
+
+            modelBuilder.Entity("Govor.Core.Models.Users.Crypto.SignedPreKey", b =>
+                {
+                    b.HasOne("Govor.Core.Models.Users.Crypto.UserCryptoSession", "UserCryptoSession")
+                        .WithOne("SignedPreKey")
+                        .HasForeignKey("Govor.Core.Models.Users.Crypto.SignedPreKey", "UserCryptoSessionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("UserCryptoSession");
+                });
+
+            modelBuilder.Entity("Govor.Core.Models.Users.Crypto.UserCryptoSession", b =>
+                {
+                    b.HasOne("Govor.Core.Models.Users.UserSession", "UserSession")
+                        .WithOne("CryptoSession")
+                        .HasForeignKey("Govor.Core.Models.Users.Crypto.UserCryptoSession", "UserSessionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("UserSession");
+                });
+
             modelBuilder.Entity("Govor.Core.Models.Users.User", b =>
                 {
                     b.HasOne("Govor.Core.Models.Invitation", "Invite")
@@ -594,6 +695,15 @@ namespace Govor.Data.Migrations
                     b.Navigation("Invite");
                 });
 
+            modelBuilder.Entity("Govor.Core.Models.Users.UserSession", b =>
+                {
+                    b.HasOne("Govor.Core.Models.Users.User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
             modelBuilder.Entity("Govor.Core.Models.ChatGroup", b =>
                 {
                     b.Navigation("Admins");
@@ -624,12 +734,26 @@ namespace Govor.Data.Migrations
                     b.Navigation("Messages");
                 });
 
+            modelBuilder.Entity("Govor.Core.Models.Users.Crypto.UserCryptoSession", b =>
+                {
+                    b.Navigation("OneTimePreKeys");
+
+                    b.Navigation("SignedPreKey")
+                        .IsRequired();
+                });
+
             modelBuilder.Entity("Govor.Core.Models.Users.User", b =>
                 {
                     b.Navigation("ReceivedFriendRequests");
 
                     b.Navigation("SentFriendRequests");
                 });
+
+            modelBuilder.Entity("Govor.Core.Models.Users.UserSession", b =>
+                {
+                    b.Navigation("CryptoSession")
+                        .IsRequired();
+                });
 #pragma warning restore 612, 618
         }
     }