On the Design and Security of RC2

Knudsen, Lars R.; Rijmen, Vincent; Rivest, Ronald L.; Robshaw, Matthew J. B.

doi:10.1007/3-540-69710-1_14

Cited by 23 publications

(13 citation statements)

References 14 publications

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“…Even if a pair does not follow one of the described characteristics, the Hamming weight of the output difference will usually be about the same as the Hamming weight of the input difference. This behavior is quite similar to that of RC2 [4] and RC5 [8]. Therefore we will use a variant of the differential attack that has been developed to attack RC5 [2] and is also used on RC2 [4].…”

Section: Mounting An Effective Differential Attackmentioning

confidence: 79%

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Cryptanalysis of SPEED

Hall

Kelsey

Rijmen

et al. 1999

Selected Areas in Cryptography

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Abstract. The cipher family SPEED (and an associated hashing mode) was recently proposed in Financial Cryptography '97. This paper cryptanalyzes that proposal, in two parts: First, we discuss several troubling potential weaknesses in the cipher. Next, we show how to efficiently break the SPEED hashing mode using differential related-key techniques, and propose a differential attack on 48-round SPEED. These results raise some significant questions about the security of the SPEED design.

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Section: Mounting An Effective Differential Attackmentioning

confidence: 79%

“…This behavior is quite similar to that of RC2 [4] and RC5 [8]. Therefore we will use a variant of the differential attack that has been developed to attack RC5 [2] and is also used on RC2 [4].…”

Section: Mounting An Effective Differential Attackmentioning

confidence: 79%

Cryptanalysis of SPEED

Hall

Kelsey

Rijmen

et al. 1999

Selected Areas in Cryptography

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“…The encryption for any given data word varies with time and sequence, in accord with padding bits under the encryption (symmetric cipher) or blinding factors over the encryption (homomorphic cipher). We have run the prototype with RC2 (Knudsen et al, 1998) 64-bit and Rijndael 128-bit symmetric encryption (the latter is the 'advanced encryption standard,' AES-128), and a Paillier 72-bit homomorphic encryption, gaining experience with both kinds.…”

Section: Encryptionmentioning

confidence: 99%

Fully encrypted high-speed microprocessor architecture: the secret computer in simulation

Breuer¹,

Bowen

2019

IJCCBS

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The architecture of an encrypted high-performance microprocessor designed on the principle that a nonstandard arithmetic generates encrypted processor states is described here. Data in registers, in memory and on buses exists in encrypted form. Any block encryption is feasible, in principle. The processor is (initially) intended for cloud-based remote computation. An encrypted version of the standard OpenRISC instruction set is understood by the processor. It is proved here, for programs written in a minimal subset of instructions, that the platform is secure against 'Iago' attacks by the privileged operator or a subverted operating system, which cannot decrypt the program output, nor change the program's output to a particular value of their choosing. Performance measures from cycle-accurate behavioural simulation of the platform are given for 64-bit RC2 (symmetric, keyed) and 72-bit Paillier (asymmetric, additively homomorphic, no key in-processor) encryptions. Measurements are centred on a nominal 1 GHz clock with 3 ns cache and 15 ns memory latency, which is conservative with respect to available technology.Reference to this paper should be made as follows: Breuer, P.T. and Bowen, J.P. (xxxx) 'Fully encrypted high-speed microprocessor architecture: the secret computer in simulation', Int.

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“…RC2 is block cipher that was designed in 1989 by Ron Rivest for RSA Data Security, Inc. RC2 has many interesting and unique design features [9]. …”

Section:  Rc2mentioning

confidence: 99%

AES Password Encryption Technique

Shalmali¹

2015

IJRITCC

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Abstract-In recent years the cases of hacking have increased at an exponential rate. The Advanced Encryption Standard (AES) is a National Institute of Standards and Technology specification for the encryption of electronic data. It is expected to become the accepted means of encrypting digital information, including financial, telecommunications, and government data. In this paper we explain the importance and the need for encryption and the Advanced Encryption Standard (AES) algorithm for password encryption. Included is a complete AES algorithm.

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On the Design and Security of RC2

Abstract: Abstract. The block cipher RC2 was designed in 1989 by Ron Rivest for RSA Data Security Inc. In this paper we describe both the cipher and preliminary attempts to use both differential and linear cryptanalysis.

Cited by 23 publications

References 14 publications

Cryptanalysis of SPEED

Cryptanalysis of SPEED

Fully encrypted high-speed microprocessor architecture: the secret computer in simulation

AES Password Encryption Technique

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