JMR-devandClaude Opus 4.8
2dcfcf5631
On Windows, recover the Adobe ADEPT user key from an installed/activated Adobe Digital Editions and use it automatically, so ADEPT EPUBs decrypt with no --key argument. Ported from adobekey.py: * Build the DPAPI entropy byte-for-byte: system-volume serial number, CPUID leaf-0 vendor (EBX|EDX|ECX) and leaf-1 signature, and the ADE username, packed as ">I12s3s13s". * CryptUnprotectData (DPAPI) recovers the key-encryption-key from the HKCU\Software\Adobe\Adept\Device "key" value, then each per-credential privateLicenseKey under ...\Activation is AES-128-CBC decrypted and the DER RSA key taken from byte 26 onward. Decryption now lazily auto-extracts and retries when no supplied key fits, and newly found keys are written back to the TOML config so later runs are offline. Uses the `windows` (DPAPI/volume info) and `winreg` crates behind cfg(windows); pure-Rust crypto unchanged. Verified end-to-end on a real ADEPT EPUB: the key was extracted from the local ADE and the book decrypted to a valid, DRM-free EPUB (rights.xml and encryption.xml removed, content readable). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
DRMLibre
A standalone, single-binary command-line tool (written in Rust, no runtime dependencies) for removing DRM from Amazon Kindle and Adobe Digital Editions ebooks. The decryption logic is ported from DeDRM_tools; DRMLibre is therefore licensed GPL-3.0-or-later. See CREDITS.md.
Use DRMLibre only on books you own, to exercise your own rights (format shifting, backup, accessibility). Respect the law in your jurisdiction.
Status
Under active development. Supported / planned formats:
| Capability | Status |
|---|---|
| Adobe ADEPT EPUB (+ hardening, B&N PassHash, font de-obfuscation) | ✅ done |
| Kindle MOBI / AZW / AZW3 | ✅ done |
| Adobe key auto-extraction from installed ADE (Windows, DPAPI) | ✅ done |
Kindle-for-PC key (.kinf) / Android / macOS auto-extraction |
planned |
| Kindle KFX-ZIP | planned |
| Adobe PDF, Kindle Topaz, eReader, Kobo, LCP | out of scope |
On Windows with Adobe Digital Editions activated, ADEPT EPUBs decrypt with no extra arguments — the key is extracted from the local install and cached in the config for later offline use.
Usage
drmlibre remove <files...> [options] # remove DRM
drmlibre passhash ... # generate/extract Adobe/B&N PassHashes
drmlibre config # summarize keys in the config file
Common remove options: -o/--output, --outputdir, -f/--force,
--overwrite, --serial, --pid, --key, --passphrase, --android-backup,
--config (default ./drmlibre.toml).
Examples:
# Adobe EPUB, using an exported Adobe key:
drmlibre remove "My Book.epub" --key adobe.der -o "My Book (no DRM).epub"
# Kindle eInk book, using the device serial:
drmlibre remove "My Book.azw" --serial 0123456789ABCDEF
Architecture
A Cargo workspace:
crates/drmlibre-core— the UI-agnostic engine (format detection, key management, decryptors). No printing or process exits; everything is aResultand progress goes throughtracing. This is what a future GUI links.crates/drmlibre-cli— thedrmlibrebinary (argument parsing, file I/O policy, exit codes).
Building
cargo build --release # binary at target/release/drmlibre
cargo test # run the test suite