Use of Smartcards in File Encryption - ESCRYPT

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File Encryption – Filesystem Layersmart card decryptsthe i-th file keywith key „A“ whenuser „A“ enters PINAeCryptfscleartext file # i/home/user A/directory #j/ciphertext filecleartext file # i/mnt/encrypted/directory #j/RAMPC (client or server) decryptsthe i-th „ . “ with i-th file keycleartext filehard disk / networkArmin Cordel02/10/114
File Encryption – Major Properties Encrypts each file with a distinct file key r i Encryption is part of filesystem layer Occurs automatically without user interaction There are ciphertext files Ciphertext files not bound to a specific network component Contents of ciphertext file is associated with user by meansof cryptography Cryptography is based on user token (smart card) Functionality required ?Armin Cordel02/10/115
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Page 3: PW-Based Volume EncryptionUser ente
Page 7 and 8: Functionality of Smart Card Smart c
Page 9 and 10: ESOSI: Groups of Userssmart card de
Page 11 and 12: File Encryption ESOSI: Main Compone
Page 13 and 14: ESOSI: Sharing of Directory Keys Se
Page 15 and 16: ESOSI: Secret Sharing Messaging ESO
Page 17 and 18: References https://launchpad.net/ec

Use of Smartcards in File Encryption - ESCRYPT

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