diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000..df19a20
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1,2 @@
+github: RustForWeb
+open_collective: rustforweb
diff --git a/.github/labels.yml b/.github/labels.yml
new file mode 100644
index 0000000..78937ac
--- /dev/null
+++ b/.github/labels.yml
@@ -0,0 +1,15 @@
+- name: 'type: bug'
+  description: 'Bug'
+  color: '3e63dd'
+- name: 'type: documentation'
+  description: 'Documentation'
+  color: '3e63dd'
+- name: 'type: feature'
+  description: 'Feature'
+  color: '3e63dd'
+- name: 'type: maintenance'
+  description: 'Maintenance'
+  color: '3e63dd'
+- name: 'type: question'
+  description: 'Question'
+  color: '3e63dd'
diff --git a/.github/renovate.json b/.github/renovate.json
new file mode 100644
index 0000000..8e2b279
--- /dev/null
+++ b/.github/renovate.json
@@ -0,0 +1,3 @@
+{
+    "extends": ["config:recommended", "schedule:weekly", ":prConcurrentLimitNone", ":prHourlyLimitNone"]
+}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..42126f6
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,54 @@
+name: CI
+
+on:
+    pull_request: {}
+    push:
+        branches:
+            - main
+
+env:
+    RUSTFLAGS: '-Dwarnings'
+
+jobs:
+    lint:
+        name: Lint
+        runs-on: ubuntu-latest
+
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+
+            - name: Set up Rust toolchain
+              run: rustup toolchain install stable --no-self-update --profile default --target wasm32-unknown-unknown
+
+            - name: Set up Rust cache
+              uses: swatinem/rust-cache@v2
+              with:
+                  cache-on-failure: true
+                  save-if: ${{ github.ref == 'refs/heads/main' }}
+
+            - name: Check formatting
+              run: cargo fmt --all --check
+
+            - name: Lint
+              run: cargo clippy --all-features
+
+    test:
+        name: Test
+        runs-on: ubuntu-latest
+
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+
+            - name: Set up Rust toolchain
+              run: rustup toolchain install stable --no-self-update --profile default --target wasm32-unknown-unknown
+
+            - name: Set up Rust cache
+              uses: swatinem/rust-cache@v2
+              with:
+                  cache-on-failure: true
+                  save-if: ${{ github.ref == 'refs/heads/main' }}
+
+            - name: Test
+              run: cargo test --all-features
diff --git a/.github/workflows/labels.yml b/.github/workflows/labels.yml
new file mode 100644
index 0000000..3b97717
--- /dev/null
+++ b/.github/workflows/labels.yml
@@ -0,0 +1,17 @@
+name: Labels
+
+on:
+    workflow_dispatch:
+
+jobs:
+    sync-labels:
+        name: Sync Labels
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  sparse-checkout: .github/labels.yml
+
+            - uses: EndBug/label-sync@v2
+              with:
+                  config-file: .github/labels.yml
diff --git a/.github/workflows/website.yml b/.github/workflows/website.yml
new file mode 100644
index 0000000..188a368
--- /dev/null
+++ b/.github/workflows/website.yml
@@ -0,0 +1,111 @@
+name: Website
+on:
+    pull_request: {}
+    push:
+        branches:
+            - main
+
+concurrency:
+    group: ${{ github.workflow }}-${{ github.ref }}
+    cancel-in-progress: false
+
+jobs:
+    book-test:
+        name: Test Book
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+
+            - name: Set up Rust toolchain
+              run: |
+                  rustup toolchain install stable --no-self-update --profile minimal
+                  rustup target add wasm32-unknown-unknown
+
+            - name: Set up Rust cache
+              uses: swatinem/rust-cache@v2
+              with:
+                  cache-on-failure: true
+                  save-if: ${{ github.ref == 'refs/heads/main' }}
+
+            - name: Install Cargo Binary Install
+              uses: cargo-bins/cargo-binstall@main
+
+            - name: Install mdBook
+              run: cargo binstall --force -y mdbook mdbook-tabs
+
+            - name: Run tests
+              run: mdbook test
+              working-directory: book
+
+    book-build:
+        name: Build Book
+        needs: book-test
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  fetch-depth: 0
+
+            - name: Set up Rust toolchain
+              run: |
+                  rustup toolchain install stable --no-self-update --profile minimal
+                  rustup target add wasm32-unknown-unknown
+
+            - name: Set up Rust cache
+              uses: swatinem/rust-cache@v2
+              with:
+                  cache-on-failure: true
+                  save-if: ${{ github.ref == 'refs/heads/main' }}
+
+            - name: Install Cargo Binary Install
+              uses: cargo-bins/cargo-binstall@main
+
+            - name: Install mdBook
+              run: cargo binstall --force -y mdbook mdbook-tabs
+
+            - name: Install Node.js dependencies
+              run: npm install
+
+            - name: Build Book
+              run: mdbook build
+              working-directory: book
+
+            - name: Upload artifact
+              uses: actions/upload-artifact@v4
+              with:
+                  name: book
+                  path: book/book
+                  retention-days: 1
+                  if-no-files-found: error
+
+    deploy:
+        name: Deploy
+        needs: book-build
+        if: github.ref == 'refs/heads/main'
+        runs-on: ubuntu-latest
+        permissions:
+            contents: read
+            pages: write
+            id-token: write
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  fetch-depth: 0
+
+            - name: Download artifacts
+              uses: actions/download-artifact@v4
+              with:
+                  path: dist
+                  merge-multiple: true
+
+            - name: Setup Pages
+              uses: actions/configure-pages@v5
+
+            - name: Upload artifact
+              uses: actions/upload-pages-artifact@v3
+              with:
+                  path: dist
+
+            - name: Deploy to GitHub Pages
+              id: deployment
+              uses: actions/deploy-pages@v4
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..73f61ed
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,166 @@
+# Created by https://www.toptal.com/developers/gitignore/api/rust,node
+# Edit at https://www.toptal.com/developers/gitignore?templates=rust,node
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+.temp
+
+# Docusaurus cache and generated files
+.docusaurus
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+### Node Patch ###
+# Serverless Webpack directories
+.webpack/
+
+# Optional stylelint cache
+
+# SvelteKit build / generate output
+.svelte-kit
+
+### Rust ###
+# Generated by Cargo
+# will have compiled files and executables
+debug/
+target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+# Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb
+
+# End of https://www.toptal.com/developers/gitignore/api/rust,node
+
+# mdBook
+book/book/
+
+# Tailwind CSS ouput
+tailwind.output.css
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..ba98b61
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,12 @@
+repos:
+    - repo: https://github.com/pre-commit/mirrors-prettier
+      rev: v3.1.0
+      hooks:
+          - id: prettier
+            additional_dependencies:
+                - prettier@^3.4.2
+    - repo: https://github.com/doublify/pre-commit-rust
+      rev: v1.0
+      hooks:
+          - id: fmt
+          - id: clippy
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..2f7896d
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1 @@
+target/
diff --git a/.prettierrc.json b/.prettierrc.json
new file mode 100644
index 0000000..7fd3381
--- /dev/null
+++ b/.prettierrc.json
@@ -0,0 +1,7 @@
+{
+    "bracketSpacing": false,
+    "printWidth": 120,
+    "singleQuote": true,
+    "tabWidth": 4,
+    "trailingComma": "none"
+}
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..b18025f
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "auth"
+version = "0.0.1"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..cafac18
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,12 @@
+[workspace]
+members = ["packages/*"]
+resolver = "2"
+
+[workspace.package]
+authors = ["Rust For Web <info@rustforweb.org>"]
+edition = "2021"
+license = "MIT"
+repository = "https://github.com/RustForWeb/auth"
+version = "0.0.1"
+
+[workspace.dependencies]
diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..c367fe7
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Rust For Web
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
+OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..a3b1d22
--- /dev/null
+++ b/README.md
@@ -0,0 +1,17 @@
+<h1 align="center">Auth</h1>
+
+Web authentication for Rust.
+
+## Documentation
+
+TODO
+
+## License
+
+This project is available under the [MIT license](LICENSE.md).
+
+## Rust For Web
+
+The Auth project is part of the [Rust For Web](https://github.com/RustForWeb).
+
+[Rust For Web](https://github.com/RustForWeb) creates and ports web UI libraries for Rust. All projects are free and open source.
diff --git a/book/book.toml b/book/book.toml
new file mode 100644
index 0000000..ae51f81
--- /dev/null
+++ b/book/book.toml
@@ -0,0 +1,17 @@
+[book]
+authors = ["Daniëlle Huisman"]
+language = "en"
+multilingual = false
+src = "src"
+title = "Auth"
+
+[preprocessor.tabs]
+
+[output.html]
+additional-css = ["theme/tabs.css", "theme/theme.css"]
+additional-js = ["theme/tabs.js"]
+edit-url-template = "https://github.com/RustForWeb/auth/edit/main/book/{path}"
+git-repository-url = "https://github.com/RustForWeb/auth"
+
+[rust]
+edition = "2021"
diff --git a/book/src/SUMMARY.md b/book/src/SUMMARY.md
new file mode 100644
index 0000000..8d452f5
--- /dev/null
+++ b/book/src/SUMMARY.md
@@ -0,0 +1,4 @@
+# Summary
+
+- [Introduction](./introduction.md)
+- [Contributing]()
diff --git a/book/src/introduction.md b/book/src/introduction.md
new file mode 100644
index 0000000..2ae5288
--- /dev/null
+++ b/book/src/introduction.md
@@ -0,0 +1,13 @@
+# Introduction
+
+Web authentication for Rust.
+
+## License
+
+This project is available under the [MIT license](https://github.com/RustForWeb/auth/blob/main/LICENSE.md).
+
+## Rust For Web
+
+The Auth project is part of the [Rust For Web](https://github.com/RustForWeb).
+
+[Rust For Web](https://github.com/RustForWeb) creates and ports web UI libraries for Rust. All projects are free and open source.
diff --git a/book/theme/tabs.css b/book/theme/tabs.css
new file mode 100644
index 0000000..8712b85
--- /dev/null
+++ b/book/theme/tabs.css
@@ -0,0 +1,25 @@
+.mdbook-tabs {
+    display: flex;
+}
+
+.mdbook-tab {
+    background-color: var(--table-alternate-bg);
+    padding: 0.5rem 1rem;
+    cursor: pointer;
+    border: none;
+    font-size: 1.6rem;
+    line-height: 1.45em;
+}
+
+.mdbook-tab.active {
+    background-color: var(--table-header-bg);
+    font-weight: bold;
+}
+
+.mdbook-tab-content {
+    padding: 1rem 0rem;
+}
+
+.mdbook-tab-content table {
+    margin: unset;
+}
diff --git a/book/theme/tabs.js b/book/theme/tabs.js
new file mode 100644
index 0000000..8ba5e87
--- /dev/null
+++ b/book/theme/tabs.js
@@ -0,0 +1,75 @@
+/**
+ * Change active tab of tabs.
+ *
+ * @param {Element} container
+ * @param {string} name
+ */
+const changeTab = (container, name) => {
+    for (const child of container.children) {
+        if (!(child instanceof HTMLElement)) {
+            continue;
+        }
+
+        if (child.classList.contains('mdbook-tabs')) {
+            for (const tab of child.children) {
+                if (!(tab instanceof HTMLElement)) {
+                    continue;
+                }
+
+                if (tab.dataset.tabname === name) {
+                    tab.classList.add('active');
+                } else {
+                    tab.classList.remove('active');
+                }
+            }
+        } else if (child.classList.contains('mdbook-tab-content')) {
+            if (child.dataset.tabname === name) {
+                child.classList.remove('hidden');
+            } else {
+                child.classList.add('hidden');
+            }
+        }
+    }
+};
+
+document.addEventListener('DOMContentLoaded', () => {
+    const tabs = document.querySelectorAll('.mdbook-tab');
+    for (const tab of tabs) {
+        tab.addEventListener('click', () => {
+            if (!(tab instanceof HTMLElement)) {
+                return;
+            }
+
+            if (!tab.parentElement || !tab.parentElement.parentElement) {
+                return;
+            }
+
+            const container = tab.parentElement.parentElement;
+            const name = tab.dataset.tabname;
+            const global = container.dataset.tabglobal;
+
+            changeTab(container, name);
+
+            if (global) {
+                localStorage.setItem(`mdbook-tabs-${global}`, name);
+
+                const globalContainers = document.querySelectorAll(
+                    `.mdbook-tabs-container[data-tabglobal="${global}"]`
+                );
+                for (const globalContainer of globalContainers) {
+                    changeTab(globalContainer, name);
+                }
+            }
+        });
+    }
+
+    const containers = document.querySelectorAll('.mdbook-tabs-container[data-tabglobal]');
+    for (const container of containers) {
+        const global = container.dataset.tabglobal;
+
+        const name = localStorage.getItem(`mdbook-tabs-${global}`);
+        if (name && document.querySelector(`.mdbook-tab[data-tabname=${name}]`)) {
+            changeTab(container, name);
+        }
+    }
+});
diff --git a/book/theme/theme.css b/book/theme/theme.css
new file mode 100644
index 0000000..ea07a3e
--- /dev/null
+++ b/book/theme/theme.css
@@ -0,0 +1,3 @@
+table {
+    margin: unset;
+}
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..68dc8c0
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,33 @@
+{
+    "name": "@rustforweb/auth",
+    "lockfileVersion": 3,
+    "requires": true,
+    "packages": {
+        "": {
+            "name": "@rustforweb/auth",
+            "license": "MIT",
+            "devDependencies": {
+                "prettier": "^3.4.2"
+            },
+            "engines": {
+                "node": ">=22"
+            }
+        },
+        "node_modules/prettier": {
+            "version": "3.4.2",
+            "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.4.2.tgz",
+            "integrity": "sha512-e9MewbtFo+Fevyuxn/4rrcDAaq0IYxPGLvObpQjiZBMAzB9IGmzlnG9RZy3FFas+eBMu2vA0CszMeduow5dIuQ==",
+            "dev": true,
+            "license": "MIT",
+            "bin": {
+                "prettier": "bin/prettier.cjs"
+            },
+            "engines": {
+                "node": ">=14"
+            },
+            "funding": {
+                "url": "https://github.com/prettier/prettier?sponsor=1"
+            }
+        }
+    }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..d0cdcd6
--- /dev/null
+++ b/package.json
@@ -0,0 +1,15 @@
+{
+    "name": "@rustforweb/auth",
+    "description": "Web authentication for Rust.",
+    "author": "Rust For Web <info@rustforweb.org>",
+    "repository": "github:RustForWeb/auth",
+    "license": "MIT",
+    "private": true,
+    "scripts": {},
+    "devDependencies": {
+        "prettier": "^3.4.2"
+    },
+    "engines": {
+        "node": ">=22"
+    }
+}
diff --git a/packages/auth/Cargo.toml b/packages/auth/Cargo.toml
new file mode 100644
index 0000000..a67be97
--- /dev/null
+++ b/packages/auth/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "auth"
+description = "Web authentication for Rust."
+
+authors.workspace = true
+edition.workspace = true
+license.workspace = true
+repository.workspace = true
+version.workspace = true
+
+[dependencies]
diff --git a/packages/auth/src/lib.rs b/packages/auth/src/lib.rs
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/packages/auth/src/lib.rs
@@ -0,0 +1 @@
+