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sudo yum install cryptsetup

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sudo cryptsetup luksFormat /dev/sdb

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sudo cryptsetup luksOpen /dev/sdb encrypted_device

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sudo mkfs.ext4 /dev/mapper/encrypted_device

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sudo mkdir /mnt/encrypted
sudo mount /dev/mapper/encrypted_device /mnt/encrypted

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sudo yum install openssl

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openssl genrsa -out private.key 2048
openssl rsa -in private.key -pubout -out public.key

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openssl rsautl -encrypt -in input.txt -inkey public.key -pubin -out encrypted.txt

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openssl rsautl -decrypt -in encrypted.txt -inkey private.key -out output.txt

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