Split can be used to split files into multiple files, making them easier to email or transfer. To split a file with the name of krypted into 100MB files, use the following command:
split -b100m ~/Desktop/krypted krypted
The files will then be called krypteda, kryptedb, kryptedc. To put Humpty Dumpty back together again use the cat command and > them into one file:
cat krypteda kryptedb kryptedc > krypted