Title
Unbridle the bit-length of a crypto-coprocessor with montgomery multiplication
Abstract
We present a novel approach for computing 2n-bit Montgomery multiplications with n-bit hardware Montgomery multipliers. Smartcards are usually equipped with such hardware Montgomery multipliers; however, due to progresses in factoring algorithms, the recommended bit length of public-key schemes such as RSA is steadily increasing, making the hardware quickly obsolete. Thanks to our doublesize technique, one can re-use the existing hardware while keeping pace with the latest security requirements. Unlike the other double-size techniques which rely on classical n-bit modular multipliers, our idea is tailored to take advantage of n-bit Montgomery multipliers. Thus, our technique increases the perenniality of existing products without compromises in terms of security.
Year
DOI
Venue
2006
10.1007/978-3-540-74462-7_14
Selected Areas in Cryptography
Keywords
Field
DocType
n-bit hardware,montgomery multiplier,double-size technique,montgomery multiplication,latest security requirement,n-bit montgomery multiplier,doublesize technique,classical n-bit modular multiplier,hardware montgomery multiplier,existing hardware,public key,smartcard
Bit-length,Pace,Montgomery reduction,Computer science,Parallel computing,Smart card,Modular design,Coprocessor,Factoring
Conference
Volume
ISSN
Citations 
4356
0302-9743
6
PageRank 
References 
Authors
0.70
5
3
Name
Order
Citations
PageRank
Masayuki Yoshino1217.43
Katsuyuki Okeya244738.47
Camille Vuillaume39010.61