sign a message
61text message — A text message (text for short) is a visual electronic communication sent from one mobile phone to another. The limitations of the screen format of a mobile phone have given rise to ingenious conventions for abbreviating the written language and… …
62Letter (message) — The famous Einstein letter from Edward Teller and Leó Szilárd to US President Franklin Roosevelt suggesting an atomic bomb project. Click here for page 2. A letter is a written message from one party to another. The role of letters in… …
63Gantry (road sign) — A gantry is a traffic sign assembly in which signs are mounted on an overhead support. Gantries are usually built on high traffic roads or routes with several lanes, where signs posted on the side of the highway would be hard to see for drivers.… …
64Vanity call sign — A vanity call sign is a personalized identifier used by some amateur radio operators, especially in the United States.United States vanity call signsWhen a person becomes a ham radio operator he or she is issued a callsign by which they are… …
65call sign — (also call signal) ► NOUN ▪ a message or tune broadcast on radio to identify the broadcaster or transmitter …
66call sign — noun Date: 1919 the combination of identifying letters, letters and numbers, or words assigned to an operator, office, activity, vehicle, or station for use in communication (as in the address of a message sent by radio) …
67call sign — (also call signal) noun a message, code, or tune that is broadcast by radio to identify the broadcaster or transmitter …
68Digital signature — This article is about secure cryptographic signatures. For simple signatures in digital form, see Electronic signature. A digital signature or digital signature scheme is a mathematical scheme for demonstrating the authenticity of a digital… …
69Quantum digital signature — A Quantum Digital Signature (QDS) refers to the quantum mechanical equivalent of either a classical digital signature or, more generally, a handwritten signature on a paper document. Like a handwritten signature, a digital signature is used to… …
70Lamport signature — In cryptography, a Lamport signature or Lamport one time signature scheme is a method for constructing a digital signature. Lamport signatures can be built from any cryptographically secure one way function; usually a cryptographic hash function… …
