Command Line Crypter is a simple to use command line file encryption / decryption utility, is useful to run from a batch file or a script. The encryption is based on standard AES-256 cipher and SHA-512 for the hash function.
To successfully encrypt or decrypt a file, you need to provide the next information:
Action: encrypt or decrypt.
Source: this is the full path and file name of the file you need to encrypt or decrypt.
Destination: this is new created output file (encrypted or decrypted).
Passphrase: this is the "password" encryption key.
Delete source: should we delete the source file or not.
Based on that, here is the command line usage:
crp.exe
Flags:
Action flags: -e = encrypt -d = decrypt -? = show info
Delete source flags: -y = Yes -n = No
Single file encryption / decryption:
The next example shows how to encrypt the file c:\test\file.ext, to create a new encrypted file c:\temp\newfile.any, use 123456 as the key (password) and delete the source file:
crp -e c:\test\file.ext c:\temp\newfile.any 123456 -y
Using wildcards
The next example shows how to encrypt all files with the txt extension in a folder, when using wildcards the destination file should always be *.*, Command Line Crypter will create the new files with the same name as the source files and with a .crp as the extension:
crp -e *.txt *.* 1234 -n
If the file to process is not in the same folder as crp.exe, then you should type the full path for the file source and destination. If there is a space in the files path, then you should put the path inside double quotes.

The license of this software is Freeware, you can free download and free use this file encryption software.