Mentioned on Bruce Schneier's blog https://www.schneier.com/blog/archives/2024/06/demo-of-aes-gcm-misuse-problems.html

Just what it says in the title.

Found via a link on the TUHS mailing list to https://alecmuffett.com/article/108789
See https://alecmuffett.com/article/108139 "Hot on the heels of #ChatControl and in the name of “identity” and “consumer choice” the EU seeks the ability to undetectably spy on HTTPS communication; 300+ experts say “no” to #Article45 of #eIDAS #QWAC"

Found on https://www.linux.com/audience/developers/hacking-the-linux-kernel-in-ada-part-1/

SC4 is a secure communications system specifically designed for (relatively) easy auditability by way of a ruthless commitment to simplicity. SC4 provides the functional equivalent of PGP from the end-user's point of view, but implements it in two order of magnitude less code. The cryptographic core of SC4 is Daniel J. Bernstein's TweetNaCl library (<800 LOC). On top of this we have a variety of UI implementations ranging from 1000 to 5000 LOC. One of these has completed a formal audit to date.

OpenSSL software - a robust, commercial-grade, full-featured toolkit for general-purpose cryptography and secure communication.

This document attempts to give you the tools needed to answer questions and explain the mysteries of gpg and PGP so that you too can take advantage of this tool and stop making excuses.
Found on https://rgoulter.com/blog/posts/programming/2022-06-10-a-visual-explanation-of-gpg-subkeys.html
See also https://github.com/dmshaw/paperkey and https://github.com/jonathancross/jc-docs

Found on http://www.pfarrell.com/

Available for Linux, OS X and Windows. More details can be found on https://www.primx.eu/en/encryption-software/zed-en/
ALGORITHMS: AES (128 to 256 bits) and RSA (1024 to 4096 bits).
TECHNOLOGIES: PKCS#1, PKCS#5, PKCS#11, X509, Microsoft CSP, LDAP technologies, PKIx compatible.
 PKCS#1 RSA Cryptography Standard https://en.wikipedia.org/wiki/PKCS_1
 PKCS#5 Password-based Encryption Standard https://en.wikipedia.org/wiki/PBKDF2
 PKCS#11 Cryptographic Token Interface https://en.wikipedia.org/wiki/PKCS_11
 X509 https://en.wikipedia.org/wiki/X.509 (ITU) standard defining the format of public key certificates.
 Does CSP stand for https://en.wikipedia.org/wiki/Credential_service_provider , Cloud service provide https://mymatetech.net/what-is-microsoft-csp-ab5b80519e79 or something else?
 LDAP https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol
 Does PKIx stand for https://en.wikipedia.org/wiki/X.509#PKIX_Working_Group ?

SYSTEMS: Available for Windows 11 to Windows 7, Linux (various distributions) and Mac OS.
LANGUAGES: Available in 7 languages.
ZED! mobile app for iOS and Android.

This repository documents how to implement custom FIDO2 extensions. It contains supplementary material to our paper at ETAA 2021. We describe how to implement extensions on all parts of the FIDO2 stack: On the relying party (website), on the client (browser), and on the authenticator (hardware token).

Found via https://positive.security/blog/find-you and https://github.com/seemoo-lab/openhaystack