Computer Science
Computer Science
bullet Henry M. Rowan Family Foundation commits $15M to Rowan University | More

bullet Cooper Medical School of Rowan University wins national video challenge | More

bullet New business: Ground broken on new Rohrer College of Business building | More

bullet Rev your Prius engines | More

bullet CMSRU students teach science to English language learners | More

Technical Report Number TR2010-2

Title
Degenerate Keys for RSA Encryption


Author
Seth D. Bergmann
Department of Computer Science
Rowan College of New Jersey
Glassboro, NJ 08028

Abstract
Some keys for the RSA public key cryptosystem fail to encrypt all possible plaintext messages. A necessary and sufficient condition for these degenerate keys is given. The probability of choosing such a key, when choosing keys at random, is presented. The impact of degenerate keys in an academic setting is discussed.