winget install --id=Kessriga.Flamberge -e flamberge removes DRM from ebooks, reimplementing the DeDRM_tools Calibre plugins in Rust. It supports the Mobipocket, Topaz, KFX, Adobe ADEPT (EPUB+PDF), Barnes & Noble (EPUB+PDF), eReader, and Kobo KEPUB schemes.
Remove DRM from ebooks you own — a fast, standalone Rust CLI.
flamberge turns a locked book you bought — from Kindle, Kobo, Adobe/library
loans, Barnes & Noble, or eReader — into a plain, standard file (.epub,
.mobi, .pdf, …) that opens in any reader and is yours to keep and back up.
It's a from-scratch reimplementation of the
DeDRM_tools Calibre plugins as
a single self-contained binary — no Calibre, no Python, no plugins.
> Use only on books you own, where removing DRM for personal use is lawful in > your jurisdiction.
New to any of this? The User Guide explains — from zero — what DRM is, where your key comes from, and how to unlock your books store by store. Start there if the terms "DRM" or "key" are unfamiliar.
--auto-keys pulls local Adobe/Kobo/Kindle keys
off this machine; dedicated keys subcommands generate or extract them.# 1. Install (see Install below for every option)
cargo install flamberge
# 2. Unlock a book, supplying your key
flamberge decrypt book.azw --serial B001234567890123 # Kindle device serial
flamberge decrypt book.epub --auto-keys # Adobe / library (finds your key)
# 3. Done — the unlocked book is written next to the original as book_nodrm.
Not sure where your key comes from? That's exactly what the User Guide walks through, one store at a time.
Pick your platform's package manager:
| Manager | Command | Platforms |
|---|---|---|
| cargo (crates.io) | cargo install flamberge | any (builds from source) |
| Nix | nix profile install github:kessriga/flamberge (or nix run github:kessriga/flamberge) | Linux, macOS |
| Homebrew | brew install kessriga/flamberge/flamberge | macOS (Apple Silicon), Linux (x86_64) |
| mise | mise use -g ubi:kessriga/flamberge | Linux, macOS, Windows |
| winget | winget install Kessriga.Flamberge | Windows (x86_64) |
| Scoop | scoop bucket add flamberge https://github.com/kessriga/scoop-flamberge then scoop install flamberge | Windows (x86_64) |
| Chocolatey | choco install flamberge | Windows (x86_64) |
| Arch (AUR) | yay -S flamberge-bin | Linux (x86_64) |
| Debian/Ubuntu | dpkg -i flamberge__amd64.deb (from Releases) | Linux (x86_64) |
| Fedora/RHEL | rpm -i flamberge--1.x86_64.rpm (from Releases) | Linux (x86_64) |
> Live now: crates.io, Nix, Scoop, mise, and the pre-built binaries (incl.
> .deb/.rpm). The Homebrew, winget, Chocolatey, and AUR entries are still
> being registered (see packaging/README.md) — until
> each is live, use one of the above or build from source below.
Pre-built binaries. Every tagged release attaches an optimized flamberge
binary for Linux (x86_64), macOS (Apple Silicon), and Windows (x86_64), plus
.deb/.rpm packages and a SHA256SUMS file for verification. Grab the archive
for your platform from the
Releases page, unpack it, and
put flamberge on your PATH.
From source (needs Rust ≥ 1.85):
cargo install flamberge # from crates.io
cargo install --path crates/flamberge-cli # from a local checkout
cargo build --release # or just build in place → target/release/flamberge
The scheme is chosen automatically by file extension, then every candidate key is
tried. Output defaults to _nodrm. next to the input; your original is
never modified.
# Decrypt a single book with an explicit key
flamberge decrypt book.azw --serial B001234567890123
flamberge decrypt book.epub --adept-key adobekey.der
flamberge decrypt book.kepub.epub --kobo-db KoboReader.sqlite
# Best-effort: discover local Adobe/Kobo/Kindle keys on this host first
flamberge decrypt book.epub --auto-keys
# Batch: several files or a whole directory → per-file OK/SKIP/FAIL summary
flamberge decrypt ~/Books --output-dir ~/Books/nodrm --auto-keys
# Generate keys offline (from your name + card, or a Kindle serial)
flamberge keys ignoble --name "Jane Q. Reader" --cc "1234 5678 9012 3456"
flamberge keys ereader --name "Jane Q. Reader" --cc "4111 1111 1111 1111"
flamberge keys eink-pid --serial B001234567890123
# Extract keys from local DRM-app state
flamberge keys adobe # macOS Adobe Digital Editions activation.dat
flamberge keys kobo # Kobo device / desktop DB + network-card IDs
flamberge keys kindle --k4i my.k4i # decode a Kindle .k4i / .kinf / Android artifact
Run flamberge --help or flamberge --help for the full option list.
For a guided, store-by-store walkthrough, see the User Guide.
Decryption is pure Rust and runs on every platform; all schemes are implemented and tested end-to-end. "Where the key comes from" is covered per store in the User Guide.
| Store | Format in → out | Where your key comes from |
|---|---|---|
| Kindle | .azw .mobi .prc → .mobi; .azw1 .tpz → .tpz; .kfx-zip → .kfx-zip | Kindle serial / PID, or --k4i / --android |
| Adobe & library | .epub → .epub; .pdf → .pdf | Adobe key from activation.dat (keys adobe) |
| Barnes & Noble | .epub → .epub; .pdf → .pdf | Name + credit-card (keys ignoble) |
| eReader | .pdb → .pmlz | Name + credit-card (keys ereader) |
| Kobo | .kepub.epub → .epub | Kobo user key + library DB (keys kobo / --kobo-db) |
Key extraction by platform. Decryption works everywhere; only the automatic
gathering of another app's local key state is platform-dependent — notably, the
Adobe key auto-extracts on macOS but must be exported to a .der on Windows. The
full matrix is in the
User Guide.
flamberge is a Cargo workspace; the CLI is a thin driver over layered libraries.
| Crate | Role | API docs |
|---|---|---|
flamberge-crypto | Shared ciphers: PC1, Topaz, AES, DES, RC4, CRC-32, digests, PBKDF2, RSA | docs.rs |
flamberge-formats | Container parsers: PalmDB, TPZ0, KFX-ZIP, ION, OCF/EPUB, PDF, PMLZ | docs.rs |
flamberge-keys | Key acquisition: PID gen, B&N/eReader/Kobo keygen, platform extraction | docs.rs |
flamberge-schemes | Per-scheme DRM removal + format dispatch | docs.rs |
flamberge | The flamberge binary (in crates/flamberge-cli) | — (binary crate) |
Dependency direction: crypto ← formats, keys ← schemes ← cli. The
flamberge crate itself is the CLI binary, so it has no docs.rs page; the
library crates above are documented on docs.rs. The byte-level algorithm
reference for every scheme lives in
docs/DEDRM_SCHEMES.md.
Build and test the workspace:
cargo build # or cargo build --release
cargo test # unit + cross-scheme integration tests
MIT — see LICENSE.