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How is divided various tools to encrypt data at rest?
CRC checksums; encryption software; encryption hardware
self-encrypting drives; media encryption software, file encryption software
encryption software; TPM chips; compression
Data at rest can be encrypted by self-encrypting drives (i.e. USB drives), encryption software for media and for files. CRC checksums ensures integrity (not confidentiality). Compression is used when size reduction is required (not for hiding content against unauthorized view).
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