Encrypt and decrypt files: fast, secure, safe. Encryption program using the Blowfish algorithm (128 bits). Can create a self-extracting file, called a capsule. This program has none of the advanced features of other encryption programs. Instead it is straightforward, simple and direct. It does two things extremely well: It encrypts a file using a password you choose as a key and, of course, decrypts it again when given the correct password. It can create an encrypted, self-extracting file called a capsule. The capsule can decrypt itself, without the need for Mars Encapsulator. Creating a self-extracting capsule means that you can send an encrypted file, for example by insecure email, to another person and they can decrypt it without having Mars Encapsulator installed on their machine. They do need to have the correct password, of course (do not include it in the email!), which you must communicate to them separately or agree about beforehand.