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.
The pigpen cipher (aka. masonic cipher) is a very simple substitution cipher, that goes back all the way to the 18th century. In Pigpen the 26 letters of the alphabet are placed in two grids.The first grid looks like the grid you would draw to play tic-tac-toe. The other grid is like a big X.he pigpen cipher (aka. masonic cipher) is a very simple substitution cipher, that goes back all the way to the 18th century. In Pigpen the 26 letters of the alphabet are placed in two grids.