One-time pad cipher system

One-time pad cipher system

C001/2710 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 53.0MB

Downloadable file size: 800.6KB

Price image Pricing

Please login to use the price calculator


Caption: One-time pad (OTP) system, TAPIR conversion table. This table is used to convert plaintext to numbers before it is encrypted. The OTP cipher system is an encryption algorithm that uses a single-use, randomly generated key (pad) that is as long as the message itself. This key is subtracted from the TAPIR numbers to give the ciphertext. If the system is followed correctly it is considered to be an unbreakable 'perfect cipher'. The OTP system was invented in 1917 by the US cryptographer Gilbert Vernam (1890-1960). The TAPIR conversion table was used in the former DDR (East Germany). As well as letters and combinations of letters (yellow), it includes numbers and punctuation (green), and switch signals (red) for line breaks or switching between letters and numbers.

Release details: Model release not required. Property release not required.

Keywords: 1900s, 1940s, 1950s, 20th century, algorithm, artwork, cipher, code, cold war, conversion table, cryptographic, cryptography, ddr, democratic republic of germany, diagram, east european, east germany, eastern europe, encryption, espionage, german, gilbert vernam, illustration, iron curtain, key pad, letters, numbers, one time pad, one-time pad, otp, perfect cipher, random, secret, secure, security, single use, spies, spy, spying, stasi, table, tapir, unbreakable, vernam cipher, vernam-cipher

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.