Cryptology group news

CWI joins Sino-European research network LIAMA

Centrum Wiskunde & Informatica (CWI) has officially joined research network LIAMA. The Sino-European Laboratory in Computer Science, Automation and Applied Mathematics (LIAMA) is a research lab consisting of European and Chinese research institutes in the field of mathematics and computer science. LIAMA conducts research, training and transfer projects in these fields. CWI will join the lab as one of the founding members.

Two CWI cryptographers honoured at CRYPTO 2013

During CRYPTO – one of the two leading crypto conferences in the world – two researchers from Centrum Wiskunde & Informatica (CWI) in Amsterdam were honoured: Ronald Cramer and Marc Stevens. The 33rd CRYPTO conference took place in  Santa Barbara, Ca., USA in August 2013.

Future mobile payments safer with quantum cryptographic identification

Payment by mobile phone will be common in the near future. Security of the payment system will partly be based on secure identification, and it will be crucial that no secret-key material, like a PIN or a password, is leaked while interacting with the payment terminal. Niek Bouman of Centrum Wiskunde & Informatica (CWI) in Amsterdam has investigated a new identification method based on quantum mechanics.

Experts uncover weakness in Internet security

Independent security researchers in California and researchers at the Centrum Wiskunde & Informatica (CWI) in the Netherlands, EPFL in Switzerland, and Eindhoven University of Technology (TU/e) in the Netherlands have found a weakness in the Internet digital certificate infrastructure.

CWI contributes to crack RSA-576

An international team of mathematicians and computer scientists including two CWI researchers has found the two prime factors of a specially prepared encryption testing number called RSA-576, a number of 576 bits or 174 digits. This was announced on December 3, 2003 by team leader Jens Franke from Bonn University. Factoring the number is equivalent to cracking a key of 576 bits in the widely used RSA crypto system. The security of this crypto system is based on the assumption that such large numbers are hard to factor.

CWI builds new supercomputer

CWI has started the construction of a new supercomputer cluster in the beginning of October 2003. The cluster, consisting of 48 dual and quad AMD Opteron systems, is the first quad Opteron cluster in the Benelux. The new supercomputer, funded by the Netherlands Organization for Scientific Research NWO, is expected to be operational in two months.

Security of E-commerce threatened by 512-bit number factorization

On August 22 1999, a team of scientists from six different countries, led by  Herman te Riele of CWI (Amsterdam), found the prime factors of a 512-bit number,  whose size models 95% of the keys used for protection of electronic commerce  on the Internet. This result shows, much earlier than expected at the start  of E-commerce, that the popular key-size of 512 bits is no longer safe against  even a moderately powerful attacker. The amount of money protected by 512-bit keys is immense.