Håvard Raddum

I. M. Ayala and H. Raddum

Zeroed Out: Cryptanalysis of Weak PRFs in Alternating Moduli

IACR Transactions on Symmetric Cryptology

S. Husum, H. Raddum and M. Stam

A Comparison of Graph-Inference Side-Channel Attacks Against SKINNY

CASCADE 2025

M. Abdelmonem, L. Holzbaur, H. Raddum and A. Zeh

Efficient Error Detection Methods for the Number Theoretic Transforms in Lattice-Based Algorithms

CASCADE 2025

M. Øygarden, P. Felke and H. Raddum

Analysis of Multivariate Encryption Schemes: Application to Dob and C*

Journal of Cryptology

A. Bariant, A. Boeuf, A. Lemoine, I. M. Ayala, M. Øygarden, L. Perrin and H. Raddum

The Algebraic Freelunch: Efficient Gröbner Basis Attacks Against Arithmetization-Oriented Primitives

Advances in Cryptology – CRYPTO 2024

L. Grassi, I. M. Ayala, M. N. Hovd, M. Øygarden, H. Raddum and Q. Wang

Cryptanalysis of Symmetric Primitives over Rings and a Key Recovery Attack on Rubato

Advances in Cryptology – CRYPTO 2023

H. Raddum and H. F. Våge

Factoring RSA Keys Found in Certificate Transparency Logs

Linz, Austria

M. N. Hovd, H. Raddum and P. Fauzi

On the IND-CCA1 Security of FHE Schemes

MDPI Cryptography

C. Cid, J. P. Indrøy and H. Raddum

FASTA – a stream cipher for fast FHE evaluation

Topics in Cryptology - CT-RSA 2022 - Cryptographers' Track at the RSA Conference 2022

M. Øygarden, P. Felke and H. Raddum

Analysis of Multivariate Encryption Schemes: Application to Dob

Public-Key Cryptography (PKC 2021)

P. Fauzi, M. N. Hovd and H. Raddum

A Practical Adaptive Key Recovery Attack on the LGM (GSW-like) Cryptosystem

International Conference on Post-Quantum Cryptography

J. P. Indrøy, N. Costes and H. Raddum

Boolean Polynomials, BDDs and CRHS Equations – Connecting the Dots with CryptaPath

Selected Areas in Cryptography

P. Derbez, G. Leander, G. Leurent, H. Raddum, Y. Rotella, D. Rupprecht, C. Beierle and L. Stennes

Cryptanalysis of the GPRS Encryption Algorithms GEA-1 and GEA-2

Eurocrypt

M. Øygarden, P. Felke, H. Raddum and C. Cid

Cryptanalysis of the Multivariate Encryption Scheme EFLASH

RSA Conference Cryptographers' Track 2020

M. Kumar, H. Raddum and S. Varadharajan

Reducing Lattice Enumeration Search Trees

Infocommunications Journal

B. Greve, Ø. Ytrehus, H. Raddum and G. Fløystad

Solving non-linear Boolean equation systems by variable elimination

Applicable Algebra in Engineering, Communication and Computing

M. Kumar, S. Varadharajan and H. Raddum

Graphs and Self-dual additive codes over GF(4)

The Eleventh International Workshop on Coding and Cryptography

H. Raddum and P. Zajac

MRHS solver based on linear algebra and exhaustive search

Journal of Mathematical Cryptology

H. Raddum and S. Varadharajan

Factorization using binary decision diagrams

Cryptography and Communications

C. Boyd, G. T. Davies, K. Gjøsteen, H. Raddum and M. Toorani

Definitions for Plaintext-Existence Hiding in Cloud Storage

Proceedings of the 13th International Conference on Availability, Reliability and Security

H. Raddum, M. Toorani, K. Gjøsteen, C. Boyd and G. T. Davies

Security Notions for Cloud Storage and Deduplication

ProvSec 2018: Provable Security

S. Rasoolzadeh and H. Raddum

Cryptanalysis of 6-round PRINCE using 2 Known Plaintexts

Cryptography and Communications

S. Rasoolzadeh and H. Raddum

Improved Multi-Dimensional Meet-in-the-Middle Cryptanalysis of KATAN

Tatra Mountains Mathematical Publications

S. Rasoolzadeh and H. Raddum

Faster Key Recovery Attack on Round-Reduced PRINCE

LightSec 2016

S. Rasoolzadeh and H. Raddum

Cryptanalysis of PRINCE with Minimal Data

Africacrypt 2016

O. Kazymyrov, R. Oliynykov and H. Raddum

Influence of addition modulo 2^n on algebraic attacks

Cryptography and Communications

H. Raddum and O. Kazymyrov

Algebraic Attacks Using Binary Decision Diagrams

BalkanCryptSec 2014

H. Raddum and K. J. Hole

Dømt til dårlig sikkerhet

Chronicle in Bergens Tidende

H. Raddum

Snowden-stormen har stilnet. Hva nå?

Chronicle on NRK Ytring

T. E. Schilling and H. Raddum

Solving Compressed Right Hand Side Equation Systems with Linear Absorption

7th International Conference on Sequences and Their Applications, SETA 2012

T. E. Schilling and H. Raddum

Analysis of Trivium Using Compressed Right Hand Side Equations

14th International Conference on Information Security and Cryptology - ICISC 2011

M. R. S. Abyaneh, S. M. M. Hassanzadeh and H. Raddum

Tutorial Paper on Quantitative Risk Assessment

Norsk Informasjonssikkerhetskonferanse (NISK) 2011, Tromsø

H. Raddum and M. Sys

The Zodiac Killer Ciphers

Tatra Mountains Mathematical Publications

H. Raddum, L. H. Nestås and K. J. Hole

Security Analysis of Mobile Phones Used as OTP Generators

International Workshop on Security Theory and Practice, WISTP 2010

T. E. Schilling and H. Raddum

Solving Equation Systems by Agreeing and Learning

Third International Workshop on the Arithmetic of Finite Fields, WAIFI 2010

H. Raddum

Coercion-Resistant Receipts in Electronic Elections

Norsk Informasjonssikkerhetskonferanse, NISK 2010, Gjøvik

M. R. Z'aba, H. Raddum, L. Simpson, E. Dawson, M. Henricksen and K. Wong

Algebraic Analysis of LEX

Australasian Information Security Conference, AISC2009

H. Raddum, L. Nestas and K. J. Hole

Når folk stemmer hjemme

Feature article in HUBRO

H. Raddum and I. Semaev

Solving Multiple Right Hand Sides linear equations

Designs, Codes and Cryptography

M. R. Z'aba, H. Raddum, M. Henricksen and E. Dawson

Bit-Pattern Based Integral Attack

Fast Software Encryption, FSE 2008

S. Rønjom and H. Raddum

On the Number of Linearly Independent Equations Generated by XL

Sequences and Their Applications, SETA 2008

S. Babbage, C. Cid, N. Pramstaller and H. Raddum

An Analysis of the Hermes8 Stream Ciphers

12th Australasian Conference on Information Security and Privacy, ACISP 2007

H. Raddum

MRHS Equation Systems

14th International Workshop on Selected Areas in Cryptography, SAC 2007

H. Raddum

More Dual Rijndaels

4th International Conference, AES 2004

H. Raddum

On the computation of coset leaders with high Hamming weight

Discrete Mathematics

V. Moen, H. Raddum and K. J. Hole

Weaknesses in the temporal key hash of WPA

Mobile Computing and Communications Review

L. Knudsen and H. Raddum

Distinguishing attack on five-round Feistel networks

Electronic Letters

H. Raddum

Cryptanalysis of IDEA-X/2

Fast Software Encryption

H. Raddum and L. Knudsen

On Noekeon

Second Open NESSIE workshop

H. Raddum and L. Knudsen

A Differential Attack on Reduced-Round SC2000

Selected Areas in Cryptography 2001