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.
â¢ CIPHER (noun). The noun CIPHER has 5 senses: 1. a message written in a secret code. 2. a mathematical element that when added to another number yields the same number. 3. a quantity of no importance. 4. a person of no influence. 5. a secret method of writing. Familiarity information: CIPHER used as a noun is common.