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**** WARNING: the enc parameter encrypts FILE and overwrites the unencrypted file with the crypted content ****

Usage : /path/to/crypto.sh

          dec-write|dec-disp|enc  

          -f|--file /path/to/FILE  

          [-d|--digest digest_to_use]  

          [-c|--cipher cipher_to_use]  

          [-p|--pass password]  

Order of arguments is not important!

enc : encrypts a file

dec-disp : decrypts a file to a temp file, display its unencrypted content and deletes the temp file do NOT use this action on binary files! Makes only sense with text files

dec-write : decrypts a file and copy the unencrypted file back to its origin in the filesystem use only this decryption action when handling binary files

-f|--file : file to perform ACTION on

-c|--cipher : cipher to use for ACTION. See command for ciphers supported on your system blowfish is default if not specified as CIPHER argument

-d|--digest : digest to use for hashing the password and creating/verifying a checksum of the of the unencrypted content currently md md5 sha1 sha256 sha224 sha512 md4 are supported sha1 is default if not specified as DIGEST argument

-p|--pass : password to use for en/de-cryption. If not specified it will be asked by openssl

-s|--show : lists supported encryption types

--force : upon decryption the filecontent is verified with a hash if there are discrepancies between the saved and the actual hash crypto.sh exits with exit code 1 and the temporary files will be deleted. use this parameter to enforce decryption even if hashes are NOT matching

-v|--version: shows version information

-h|--help : shows this help