Created
May 5, 2021 12:22
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enc.sh for simply encrypt and decrypt files
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| #! /bin/bash | |
| c=$1 | |
| shift | |
| if [[ $c == 'gen' ]] || [[ $c == 'generate' ]] ; then | |
| openssl rand -hex 16 > enc.key | |
| openssl rand -hex 16 > iv.key | |
| elif [[ $c == 'enc' ]] || [[ $c == 'encrypt' ]] ; then | |
| openssl dgst -md5 "$@" > files.md5 | |
| for f in "$@" ; do | |
| echo "encrypting $f" | |
| openssl enc -aes-128-ctr -in "$f" -out "$f.enc" -K "$(cat enc.key)" -iv "$(cat iv.key)" | |
| done | |
| elif [[ $c == 'dec' ]] || [[ $c == 'decrypt' ]]; then | |
| for f in "$@"; do | |
| if [[ $f == *.enc ]]; then | |
| o="${f%.enc}" | |
| else | |
| o="$f.data" | |
| fi | |
| echo "decrypting $f => $o" | |
| openssl enc -aes-128-ctr -in "$f" -out "$o" -d -K "$(cat enc.key)" -iv "$(cat iv.key)" | |
| done | |
| else | |
| echo "Usage: enc.sh [option] [files...] | |
| Options: | |
| gen, generate generate keys | |
| enc, encrypt encrypt files | |
| dec, decrypt decrypt files | |
| Example: | |
| ./enc.sh gen | |
| ./enc.sh enc *.txt | |
| ./enc.sh dec *.enc" | |
| fi |
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