Stefan Lucks is a researcher in the fields of
communications securityCommunications security : Measures and controls taken to deny unauthorized persons information derived from telecommunications and ensure the authenticity of such telecommunications. Communications security includes cryptosecurity, transmission security, emission security, traffic-flow security...
and
cryptographyCryptography is the practice and study of hiding information. Modern cryptography intersects the disciplines of mathematics, computer science, and engineering...
. Lucks is known for his attack on
Triple DESIn cryptography, Triple DES is the common name for the Triple Data Encryption Algorithm block cipher defined in each of:* * *...
, and for extending
Lars KnudsenLars Ramkilde Knudsen is a Danish researcher in cryptography, particularly interested in the design and analysis of block ciphers, hash functions and message authentication codes .-Academic:...
's Square attack to
TwofishIn cryptography, Twofish is a symmetric key block cipher with a block size of 128 bits and key sizes up to 256 bits. It was one of the five finalists of the Advanced Encryption Standard contest, but was not selected for standardisation...
, a cipher outside the
SquareIn cryptography, Square is a block cipher invented by Joan Daemen and Vincent Rijmen. The design, published in 1997, is a forerunner to the Rijndael algorithm, which has been adopted as the Advanced Encryption Standard...
family, thus generalising the attack into
integral cryptanalysisIn cryptography, integral cryptanalysis is a cryptanalytic attack that is particularly applicable to block ciphers based on substitution-permutation networks. It was originally designed by Lars Knudsen as a dedicated attack against Square, so is commonly known as the Square attack. It was also...
. He has also co-authored attacks on
AESIn cryptography, the Advanced Encryption Standard is an encryption standard adopted by the U.S. government. The standard comprises three block ciphers, AES-128, AES-192 and AES-256, adopted from a larger collection originally published as Rijndael. Each AES cipher has a 128-bit block size, with...
,
LEVIATHANLEVIATHAN is a stream cipher submitted to NESSIE by Scott Fluhrer and David McGrew. It is a seekable stream cipher, which means that the user may efficiently skip forward to any part of the keystream, much like CTR mode or Salsa20, but unlike those ciphers generating contiguous blocks of the...
, and the
E0E0 is a stream cipher used in the Bluetooth protocol. It generates a sequence of pseudorandom numbers and combines it with the data using the XOR operator. The key length may vary, but is generally 128 bits....
cipher used in
BluetoothBluetooth is an open wireless protocol for exchanging data over short distances from fixed and mobile devices, creating personal area networks . It was originally conceived as a wireless alternative to RS232 data cables...
devices, as well as publishing strong password-based key agreement schemes.
Stefan Lucks is a researcher in the fields of
communications securityCommunications security : Measures and controls taken to deny unauthorized persons information derived from telecommunications and ensure the authenticity of such telecommunications. Communications security includes cryptosecurity, transmission security, emission security, traffic-flow security...
and
cryptographyCryptography is the practice and study of hiding information. Modern cryptography intersects the disciplines of mathematics, computer science, and engineering...
. Lucks is known for his attack on
Triple DESIn cryptography, Triple DES is the common name for the Triple Data Encryption Algorithm block cipher defined in each of:* * *...
, and for extending
Lars KnudsenLars Ramkilde Knudsen is a Danish researcher in cryptography, particularly interested in the design and analysis of block ciphers, hash functions and message authentication codes .-Academic:...
's Square attack to
TwofishIn cryptography, Twofish is a symmetric key block cipher with a block size of 128 bits and key sizes up to 256 bits. It was one of the five finalists of the Advanced Encryption Standard contest, but was not selected for standardisation...
, a cipher outside the
SquareIn cryptography, Square is a block cipher invented by Joan Daemen and Vincent Rijmen. The design, published in 1997, is a forerunner to the Rijndael algorithm, which has been adopted as the Advanced Encryption Standard...
family, thus generalising the attack into
integral cryptanalysisIn cryptography, integral cryptanalysis is a cryptanalytic attack that is particularly applicable to block ciphers based on substitution-permutation networks. It was originally designed by Lars Knudsen as a dedicated attack against Square, so is commonly known as the Square attack. It was also...
. He has also co-authored attacks on
AESIn cryptography, the Advanced Encryption Standard is an encryption standard adopted by the U.S. government. The standard comprises three block ciphers, AES-128, AES-192 and AES-256, adopted from a larger collection originally published as Rijndael. Each AES cipher has a 128-bit block size, with...
,
LEVIATHANLEVIATHAN is a stream cipher submitted to NESSIE by Scott Fluhrer and David McGrew. It is a seekable stream cipher, which means that the user may efficiently skip forward to any part of the keystream, much like CTR mode or Salsa20, but unlike those ciphers generating contiguous blocks of the...
, and the
E0E0 is a stream cipher used in the Bluetooth protocol. It generates a sequence of pseudorandom numbers and combines it with the data using the XOR operator. The key length may vary, but is generally 128 bits....
cipher used in
BluetoothBluetooth is an open wireless protocol for exchanging data over short distances from fixed and mobile devices, creating personal area networks . It was originally conceived as a wireless alternative to RS232 data cables...
devices, as well as publishing strong password-based key agreement schemes.
Lucks graduated from the University of Dortmund in 1992, and received his PhD at the Georg-August-Universität,
GöttingenGöttingen is a college town in Lower Saxony, Germany. It is the capital of the district of Göttingen. The Leine river runs through the town. In 2006 the population was 129,686.-General information:...
in 1997.
After leaving the
University of MannheimThe University of Mannheim is one of the younger German universities. The University’s trademark is its distinct profile. This is characterized by Mannheim’s economic and social sciences which are closely intertwined with humanities, law, mathematics and computer science...
Lucks now heads the Chair of Media Security at Bauhaus-University Weimar.
Together with
Niels FergusonNiels T. Ferguson is a Dutch cryptographer and consultant who currently works for Microsoft. He has worked with others, including Bruce Schneier, designing cryptographic algorithms, testing algorithms and protocols, and writing papers and books...
,
Bruce SchneierBruce Schneier is an American cryptographer, computer security specialist, and writer. He is the author of several books on computer security and cryptography, and is the founder and chief technology officer of BT Counterpane, formerly Counterpane Internet Security, Inc...
and others he developed the
SkeinSkein is a cryptographic hash function and an entrant in the NIST hash function competition to design what will become the SHA-3 standard, the intended successor of SHA-1 and SHA-2. It is one of the 14 algorithms accepted for the second round of the competition...
hash function as a candidate for the
NIST hash function competitionThe NIST hash function competition refers to an open competition held by the US National Institute of Standards and Technology for a new SHA-3 function to replace the older SHA-1 and SHA-2 hash functions, which was formally announced in the Federal Register on November 2, 2007...
.
External links