A fiber, a single filament of natural material, such as cotton, linen or wool, or artificial material such as nylon, polyester, metal or mineral fiber, or man made natural fibre like Viscose, Modal & Excel is measured in terms of linear mass density, the weight of a given length of fiber.
The vernam cipher, sometimes known as the 'one time pad', is a stream cipher, which providing certain requirements are met, can be theoretically unbreakable.
Bottom Line CipherShed is a free, open-source program intended to be used to create encrypted files or to encrypt entire drives. This includes being able to encrypt thumb/flash drives and external removable (and back-up) hard disk drives (HDDs).