LibrePGP · RFC 4880 · C++

Powering end-to-end email encryption in Mozilla Thunderbird.

Secure email with unrivaled performance. LibrePGP and RFC 4880 compliant — openly licensed, cross-platform, and built for the long haul.

Get started Contribute Latest: v0.18.1 · 2025-11-21
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LibrePGP

Ribose proudly announces full support for LibrePGP: a new specification for OpenPGP that defends secure communication into the future.

Read the announcement

§ 01 — Software

The RNP suite

All software

RNP

C++ OpenPGP library and tools

Written in C++

Py-RNP

Bindings for RNP in Python

Bindings for Python

Ruby-RNP

Bindings for RNP in Ruby

Bindings for Ruby

homebrew-rnp

Homebrew formula for RNP.

Homebrew formula

Install RNP

rnp · rnpkeys · librnp
via Homebrew
brew tap rnpgp/rnp
brew install rnp

More platforms (Windows, Ubuntu, FreeBSD) in the installation guide.

§ 02 — Specifications

Standards work

All specifications

Draft

IANA Registry Updates for OpenPGP

Changes motivated by recently proposed extensions to OpenPGP.

Draft

SCA Extensions For OpenPGP

Enables OpenPGP to be used in compliance with SCA regulations within China.

§ 03 — Blog

Releases & news

All posts
2025-11-20 release RNP version 0.18.1 released 2025-06-19 release RNP version 0.18.0 released 2024-07-22 news RNP proudly supports LibrePGP 2024-05-03 release RNP version 0.17.1 released

§ 04 — Security

Advisories

All advisories
RA-2025-11-20 CVE-2025-13470 2025-11-21

RA-2025-11-20: Security vulnerability fixed in RNP 0.18.1

Use of insufficiently random values in session key generation for PKESK. RNP version 0.18.0 ONLY is affected. Upgrading to RNP 0.18.1 fixes this issue.

§ 05 — Manual

Man pages

Full manual
librnp(3) OpenPGP implementation, available via FFI interface rnp(1) OpenPGP-compatible signatures and encryption rnpkeys(1) OpenPGP key management utility