Portable Data Encryption Device with Configurable Security Functionality and Method for File Encryption
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United States of America Patent
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N/A
Issued Date -
Oct 23, 2008
app pub date -
Jan 22, 2008
filing date -
Jan 22, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A portable encryption device with logon access controlled by an encryption key, with an on board cryptographic processor for reconstituting the encryption key from a plurality of secrets generated by a secret sharing algorithm, optionally shrouded with external secrets using an invertible transform resistant to quantum computing attacks. Another embodiment provides file decryption controlled by a file encryption key, with the on board cryptographic processor reconstituting the file encryption key from a version of the file encryption key which has been shrouded with a network authorization code. A method for encryption of a plaintext file by hashing, compressing, and encrypting the plaintext file, hashing the ciphertext, hashing the plaintext hash and the ciphertext hash, and sealing the ciphertext together with the resulting hash. A portable encryption device for performing the method is also disclosed.
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