Electronic seal, IC card, authentication system using the same, and mobile device including such electronic seal

An electronic seal includes an input section for inputting a random number encrypted based on a prescribed key; a secret key memory section for storing a secret key related to the prescribed key; a decoding section for decoding the input random number based on the secret key; an encryption section f...

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Bibliographic Details
Main Authors Morita, Teruaki, Zhang, Xiaomang, Ehiro, Masayuki
Format Patent
LanguageEnglish
Published 26.02.2004
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Summary:An electronic seal includes an input section for inputting a random number encrypted based on a prescribed key; a secret key memory section for storing a secret key related to the prescribed key; a decoding section for decoding the input random number based on the secret key; an encryption section for encrypting the decoded random number based on the secret key; and an output section for outputting the random number encrypted based on the secret key.