diff --git a/dotnet/AipsCore/Infrastructure/Persistence/Db/AipsDbContext.cs b/dotnet/AipsCore/Infrastructure/Persistence/Db/AipsDbContext.cs
index 5aff8f0..ce13ff9 100644
--- a/dotnet/AipsCore/Infrastructure/Persistence/Db/AipsDbContext.cs
+++ b/dotnet/AipsCore/Infrastructure/Persistence/Db/AipsDbContext.cs
@@ -1,4 +1,5 @@
-using Microsoft.AspNetCore.Identity;
+using AipsCore.Infrastructure.Persistence.Authentication.RefreshToken;
+using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
 
@@ -6,6 +7,8 @@ namespace AipsCore.Infrastructure.Persistence.Db;
 
 public class AipsDbContext : IdentityDbContext<User.User, IdentityRole<Guid>, Guid>
 {
+    public DbSet<RefreshToken> RefreshTokens { get; set; }
+    
     public DbSet<Whiteboard.Whiteboard> Whiteboards { get; set; }
     public DbSet<Shape.Shape> Shapes { get; set; }
     public DbSet<WhiteboardMembership.WhiteboardMembership> WhiteboardMemberships { get; set; }
diff --git a/dotnet/AipsCore/Infrastructure/Persistence/Db/Migrations/20260214171247_AddedRefreshTokens.Designer.cs b/dotnet/AipsCore/Infrastructure/Persistence/Db/Migrations/20260214171247_AddedRefreshTokens.Designer.cs
new file mode 100644
index 0000000..179c3a3
--- /dev/null
+++ b/dotnet/AipsCore/Infrastructure/Persistence/Db/Migrations/20260214171247_AddedRefreshTokens.Designer.cs
@@ -0,0 +1,506 @@
+// <auto-generated />
+using System;
+using AipsCore.Infrastructure.Persistence.Db;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace AipsCore.Infrastructure.Persistence.Db.Migrations
+{
+    [DbContext(typeof(AipsDbContext))]
+    [Migration("20260214171247_AddedRefreshTokens")]
+    partial class AddedRefreshTokens
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "10.0.2")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Authentication.RefreshToken.RefreshToken", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("ExpiresAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Token")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("RefreshTokens");
+                });
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Shape.Shape", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("AuthorId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Color")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("character varying(10)");
+
+                    b.Property<int?>("EndPositionX")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("EndPositionY")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("PositionX")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("PositionY")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("TextSize")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("TextValue")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("Thickness")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Type")
+                        .HasColumnType("integer");
+
+                    b.Property<Guid>("WhiteboardId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AuthorId");
+
+                    b.HasIndex("WhiteboardId");
+
+                    b.ToTable("Shapes");
+                });
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.User.User", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<int>("AccessFailedCount")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DeletedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<bool>("EmailConfirmed")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("LockoutEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTimeOffset?>("LockoutEnd")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("NormalizedEmail")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("NormalizedUserName")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("PasswordHash")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PhoneNumber")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("PhoneNumberConfirmed")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("SecurityStamp")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("TwoFactorEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("UserName")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedEmail")
+                        .HasDatabaseName("EmailIndex");
+
+                    b.HasIndex("NormalizedUserName")
+                        .IsUnique()
+                        .HasDatabaseName("UserNameIndex");
+
+                    b.ToTable("AspNetUsers", (string)null);
+                });
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Whiteboard.Whiteboard", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Code")
+                        .IsRequired()
+                        .HasMaxLength(8)
+                        .HasColumnType("character varying(8)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DeletedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("JoinPolicy")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("MaxParticipants")
+                        .HasColumnType("integer");
+
+                    b.Property<Guid>("OwnerId")
+                        .HasColumnType("uuid");
+
+                    b.Property<int>("State")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("OwnerId");
+
+                    b.ToTable("Whiteboards");
+                });
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.WhiteboardMembership.WhiteboardMembership", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<bool>("CanJoin")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("EditingEnabled")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsBanned")
+                        .HasColumnType("boolean");
+
+                    b.Property<DateTime>("LastInteractedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("WhiteboardId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.HasIndex("WhiteboardId");
+
+                    b.ToTable("WhiteboardMemberships");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRole<System.Guid>", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<string>("NormalizedName")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedName")
+                        .IsUnique()
+                        .HasDatabaseName("RoleNameIndex");
+
+                    b.ToTable("AspNetRoles", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<System.Guid>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ClaimType")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ClaimValue")
+                        .HasColumnType("text");
+
+                    b.Property<Guid>("RoleId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetRoleClaims", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<System.Guid>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ClaimType")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ClaimValue")
+                        .HasColumnType("text");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserClaims", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<System.Guid>", b =>
+                {
+                    b.Property<string>("LoginProvider")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProviderKey")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProviderDisplayName")
+                        .HasColumnType("text");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("LoginProvider", "ProviderKey");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserLogins", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<System.Guid>", b =>
+                {
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("RoleId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("UserId", "RoleId");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetUserRoles", (string)null);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<System.Guid>", b =>
+                {
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("LoginProvider")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Value")
+                        .HasColumnType("text");
+
+                    b.HasKey("UserId", "LoginProvider", "Name");
+
+                    b.ToTable("AspNetUserTokens", (string)null);
+                });
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Authentication.RefreshToken.RefreshToken", b =>
+                {
+                    b.HasOne("AipsCore.Infrastructure.Persistence.User.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Shape.Shape", b =>
+                {
+                    b.HasOne("AipsCore.Infrastructure.Persistence.User.User", "Author")
+                        .WithMany("Shapes")
+                        .HasForeignKey("AuthorId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("AipsCore.Infrastructure.Persistence.Whiteboard.Whiteboard", "Whiteboard")
+                        .WithMany("Shapes")
+                        .HasForeignKey("WhiteboardId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Author");
+
+                    b.Navigation("Whiteboard");
+                });
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Whiteboard.Whiteboard", b =>
+                {
+                    b.HasOne("AipsCore.Infrastructure.Persistence.User.User", "Owner")
+                        .WithMany("Whiteboards")
+                        .HasForeignKey("OwnerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Owner");
+                });
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.WhiteboardMembership.WhiteboardMembership", b =>
+                {
+                    b.HasOne("AipsCore.Infrastructure.Persistence.User.User", "User")
+                        .WithMany("Memberships")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("AipsCore.Infrastructure.Persistence.Whiteboard.Whiteboard", "Whiteboard")
+                        .WithMany("Memberships")
+                        .HasForeignKey("WhiteboardId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+
+                    b.Navigation("Whiteboard");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<System.Guid>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole<System.Guid>", null)
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<System.Guid>", b =>
+                {
+                    b.HasOne("AipsCore.Infrastructure.Persistence.User.User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<System.Guid>", b =>
+                {
+                    b.HasOne("AipsCore.Infrastructure.Persistence.User.User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<System.Guid>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole<System.Guid>", null)
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("AipsCore.Infrastructure.Persistence.User.User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<System.Guid>", b =>
+                {
+                    b.HasOne("AipsCore.Infrastructure.Persistence.User.User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.User.User", b =>
+                {
+                    b.Navigation("Memberships");
+
+                    b.Navigation("Shapes");
+
+                    b.Navigation("Whiteboards");
+                });
+
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Whiteboard.Whiteboard", b =>
+                {
+                    b.Navigation("Memberships");
+
+                    b.Navigation("Shapes");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/dotnet/AipsCore/Infrastructure/Persistence/Db/Migrations/20260214171247_AddedRefreshTokens.cs b/dotnet/AipsCore/Infrastructure/Persistence/Db/Migrations/20260214171247_AddedRefreshTokens.cs
new file mode 100644
index 0000000..11fde22
--- /dev/null
+++ b/dotnet/AipsCore/Infrastructure/Persistence/Db/Migrations/20260214171247_AddedRefreshTokens.cs
@@ -0,0 +1,47 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace AipsCore.Infrastructure.Persistence.Db.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddedRefreshTokens : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "RefreshTokens",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uuid", nullable: false),
+                    Token = table.Column<string>(type: "character varying(255)", maxLength: 255, nullable: false),
+                    UserId = table.Column<Guid>(type: "uuid", nullable: false),
+                    ExpiresAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_RefreshTokens", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_RefreshTokens_AspNetUsers_UserId",
+                        column: x => x.UserId,
+                        principalTable: "AspNetUsers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_RefreshTokens_UserId",
+                table: "RefreshTokens",
+                column: "UserId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "RefreshTokens");
+        }
+    }
+}
diff --git a/dotnet/AipsCore/Infrastructure/Persistence/Db/Migrations/AipsDbContextModelSnapshot.cs b/dotnet/AipsCore/Infrastructure/Persistence/Db/Migrations/AipsDbContextModelSnapshot.cs
index a0c1825..fe16030 100644
--- a/dotnet/AipsCore/Infrastructure/Persistence/Db/Migrations/AipsDbContextModelSnapshot.cs
+++ b/dotnet/AipsCore/Infrastructure/Persistence/Db/Migrations/AipsDbContextModelSnapshot.cs
@@ -22,6 +22,30 @@ namespace AipsCore.Infrastructure.Persistence.Db.Migrations
 
             NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
 
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Authentication.RefreshToken.RefreshToken", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("ExpiresAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Token")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("character varying(255)");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("RefreshTokens");
+                });
+
             modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Shape.Shape", b =>
                 {
                     b.Property<Guid>("Id")
@@ -347,6 +371,17 @@ namespace AipsCore.Infrastructure.Persistence.Db.Migrations
                     b.ToTable("AspNetUserTokens", (string)null);
                 });
 
+            modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Authentication.RefreshToken.RefreshToken", b =>
+                {
+                    b.HasOne("AipsCore.Infrastructure.Persistence.User.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
             modelBuilder.Entity("AipsCore.Infrastructure.Persistence.Shape.Shape", b =>
                 {
                     b.HasOne("AipsCore.Infrastructure.Persistence.User.User", "Author")