We present a set of attacks on the OpenPGP specification and implementations of it which
result in full recovery of users' private keys. The attacks exploit the lack of cryptographic …

S/MIME and OpenPGP use cryptographic constructions repeatedly shown to be vulnerable
to format oracle attacks in protocols like TLS, SSH, or IKE. However, format oracle attacks in …

We describe in this paper how to perform a padding oracle attack against the GlobalPlatform
SCP02 protocol. SCP02 is implemented in smart cards and used by transport companies, in …

In this work we investigate the problem of automating the development of adaptive chosen
ciphertext attacks on systems that contain vulnerable format oracles. Unlike previous …

We analyse the cryptographic protocols underlying Delta Chat, a decentralised messaging
application which uses e-mail infrastructure for message delivery. It provides end-to-end …

This work describes vulnerabilities in the specification of the AEAD packets as introduced in
the novel LibrePGP specification that is implemented by the widely used GnuPG application …

For the past half-century since the advent of modern cryptography, perhaps most distinctly
demarcated by Diffie and Hellman in 1976, dramatic advances in cryptographic theory and …

The aim of the present paper is to propose a polynomial-time plaintext-recovery attack on
the matrix-based knapsack cipher. The aforesaid algorithm uses only public information and …

In the last decades, the use of cloud storage has grown significantly. Simultaneously,
awareness around privacy issues related to outsourced data increases among uses …

In this work we investigate the problem of automating the development of adaptive chosen
ciphertext attacks on systems that contain vulnerable format oracles. Unlike previous …