Encriptación de archivos


Se desea encriptar un archivo bajo una contraseña

Usando Openssl

 Encriptar el archivo file.pdf, teniendo como resultado el archivo fileEnc.pdf, solicitando colocar la contraseña tras su ejecución:

openssl enc -in file.pdf -out fileEnc.pdf -e -aes256

Para desencriptar el archivo fileEnc.pdf y tener como resultado el archivo fileDesc.pdf, con solicitud para colocar la contraseña tras su ejecición:

openssl enc -in fileEnc.pdf -out fileDesc.pdf -d -aes256
Si se desea colocar el password de encripción en la misma línea, agregar la opción -k seguido del password.
-k passwordUsado

Descargar openSSL para windows:
http://gnuwin32.sourceforge.net/packages/openssl.htm
http://downloads.sourceforge.net/gnuwin32/openssl-0.9.8h-1-setup.exe


Referencias:
http://stackoverflow.com/questions/16056135/how-to-use-openssl-to-encrypt-decrypt-files


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