macOS
brew install qcalocal Homebrew formula metadata
sudo port install qcaMacPorts ports tree · devel/qca/Portfile · source: api.github.com
brew / rank 4692
Qt Cryptographic Architecture (QCA). Version 2.3.12 via Homebrew; verified 2026-10-08. Also installable with apk: sudo apk add libqca-qt5.
install
brew install qcalocal Homebrew formula metadata
sudo port install qcaMacPorts ports tree · devel/qca/Portfile · source: api.github.com
sudo apk add qcaAlpine Linux edge package indexes · qca · source: dl-cdn.alpinelinux.org
sudo dnf install qca-qt5Fedora Rawhide package metadata · qca-qt5 · source: dl.fedoraproject.org
sudo pacman -S qca-qt5Arch Linux sync databases · qca-qt5 · source: geo.mirror.pkgbuild.com
overview
Qt Cryptographic Architecture (QCA)
history
QCA is KDE's cross-platform cryptographic abstraction for Qt applications, exposing a consistent API while loading cryptographic implementations through providers.
QCA, the Qt Cryptographic Architecture, dates to the early Qt 3 and Qt 4 era; official source headers carry Justin Karneges copyright beginning in 2003 and Brad Hards contributions beginning in 2004.
Inspired by the Java Cryptography Architecture, QCA introduced a cross-platform Qt-style API separated from concrete implementations through dynamically selected providers.
QCA's adoption has centered on Qt and KDE applications that need TLS, certificates, SASL, OpenPGP, CMS, smart-card, hashing, and encryption facilities while preserving Qt types and conventions.
The input records packages in Homebrew, Alpine Linux, Fedora, Arch Linux, and MacPorts. Distribution naming commonly reflects the supported Qt generation because QCA is primarily consumed as a runtime or development library.
Applications include QtCrypto, initialize QCA for provider-backed operations, link against the QCA library, and test required algorithms with QCA::isSupported(). Provider plugins normally reside in Qt's plugins/crypto directory.
QCA lets package maintainers separate a stable Qt-facing API from replaceable cryptographic provider plugins. That architecture permits backend changes without recompiling every client application, while making provider availability an important runtime packaging concern.
security posture
No matching local secret-handling manifest was found for qca. Package metadata is still published here so future coverage has a stable package URL.
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
mozcerts-qt6 | cli | global executable | |
qcatool-qt6 | cli | global executable |
freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
install metadata
| Package key | brew:qca |
|---|---|
| Version | 2.3.12 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/qca |
| Homepage | https://userbase.kde.org/QCA |
| Upstream docs | https://userbase.kde.org/QCA |
| License | LGPL-2.1-or-later |
| Source archive | https://download.kde.org/stable/qca/2.3.12/qca-2.3.12.tar.xz |
| Last updated | 2026-10-08T15:34:20-04:00 |
| Pulse | updated |
| Dependencies | botan, ca-certificates, gnupg, libgcrypt, nspr, nss, openssl@4, pkcs11-helper, qt5compat, qtbase |
| Build dependencies | cmake, pkgconf |
| Uses from macOS | cyrus-sasl |
| Bottle | available (on arm64_golden_gate, arm64_linux, arm64_sequoia, arm64_tahoe, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | qca |
| Version Scheme | 0 |
| Revision | 1 |
| Head Version | HEAD |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
libqca-qt5 2.3.10-r0
Qt cryptographic architecture
sudo apk add libqca-qt5libqca-qt6 2.3.10-r0
Qt cryptographic architecture
sudo apk add libqca-qt6qca 2.3.10-r0
Qt cryptographic architecture
sudo apk add qcaqca-dev 2.3.10-r0
Qt cryptographic architecture (development files)
sudo apk add qca-devqca-doc 2.3.10-r0
Qt cryptographic architecture (documentation)
sudo apk add qca-docqca-qt6-dev 2.3.10-r0
Qt cryptographic architecture
sudo apk add qca-qt6-devqca-qt5 2.3.12-1.fc46
Qt5 Cryptographic Architecture
sudo dnf install qca-qt5qca-qt5-cyrus-sasl 2.3.12-1.fc46
Cyrus-SASL plugin for the Qt5 Cryptographic Architecture
sudo dnf install qca-qt5-cyrus-saslqca-qt5-devel 2.3.12-1.fc46
Qt5 Cryptographic Architecture development files
sudo dnf install qca-qt5-develqca-qt5-gcrypt 2.3.12-1.fc46
Gcrypt plugin for the Qt5 Cryptographic Architecture
sudo dnf install qca-qt5-gcryptqca-qt5-gnupg 2.3.12-1.fc46
Gnupg plugin for the Qt Cryptographic Architecture
sudo dnf install qca-qt5-gnupgqca-qt5-logger 2.3.12-1.fc46
Logger plugin for the Qt5 Cryptographic Architecture
sudo dnf install qca-qt5-loggerqca-qt5-nss 2.3.12-1.fc46
Nss plugin for the Qt5 Cryptographic Architecture
sudo dnf install qca-qt5-nssqca-qt5-ossl 2.3.12-1.fc46
Openssl plugin for the Qt5 Cryptographic Architecture
sudo dnf install qca-qt5-osslqca-qt5-pkcs11 2.3.12-1.fc46
Pkcs11 plugin for the Qt5 Cryptographic Architecture
sudo dnf install qca-qt5-pkcs11qca-qt5-softstore 2.3.12-1.fc46
Pkcs11 plugin for the Qt5 Cryptographic Architecture
sudo dnf install qca-qt5-softstoresource trail
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View the package source record on GitHub.