Data encryption using two interlocking keys where enything encoded using one key may be decoded using the other key. This means if someone makes one of the two keys publicly available (as in public-key encryption) and keeps the other private, then anyone may send them a message or data that only they can decode, giving privacy, and furthermore, the sender may also encrypt that same message additionally with their own private key, making it impossible to read without decoding first with *their* __public__ key by the receiver, this gives authenticity.
It is a very powerful system. One cannot determine one key from the other, nor can they crack the encryption by computing all combinations, because, depending on the size of the keys (sometimes as large as 1024 bytes, though having grown from smaller versions in popular implementations of the software which does this), the amount of computing power required to crack the code is unavailable, even supercomputers would take more than a hundred years to crack it.
PGP is a publicly availble software implementation written by Phil Zimmermann.
adjective 1. occurring at the same time; coinciding in time; contemporaneous; simultaneous. 2. going on at the same rate and exactly together; recurring together. 3. Physics, Electricity. having the same frequency and zero phase difference. 4. Computers, Telecommunications. of, relating to, or operating using fixed-time intervals controlled by a clock (opposed to asynchronous). 5. Aerospace. […]
noun 1. former name of Geostationary Operational Environmental Satellite. Abbreviation: SMS.
noun, Electricity. 1. a synchronous machine that acts as a motor. synchronous motor noun 1. an alternating-current motor that runs at a speed that is equal to or is a multiple of the frequency of the supply
- Synchronous optical network
networking (SONET) A broadband networking standard based on point-to-point optical fibre networks. SONET will provide a high-bandwidth “pipe” to support ATM-based services. The SONET standard will establish a digital hierarchical network with a consistent worldwide transport scheme. SONET has been designed to take advantage of fibre, in contrast to the plain old telephone system which […]