A series of symmetric encryption algorithms developed by RSA Security.
RC4 — a variable key-size stream cipher with byte-oriented operations. The algorithm is based on the use of a random permutation.
RC5 — a parameterized algorithm with a variable block size, a variable key size, and a variable number of rounds. Allowable choices for the block size are 32 bits (for experimentation and evaluation purposes only), 64 bits (for use a drop-in replacement for DES), and 128 bits. The number of rounds can range from 0 to 255, while the key can range from 0 bits to 2040 bits in size. RC5 has three routines: key expansion, encryption, and decryption.
RC6 — a block cipher based on RC5. RC6 is a parameterized algorithm where the block size, the key size, and the number of rounds are variable. The upper limit on the key size is 2040 bits. RC6 adds two features to RC5: the inclusion of integer multiplication and the use of four 4-bit working registers instead of RC5��s two 2-bit registers.
- RCA cable
A standard type of cable used to transmit analog audio and composite-video signals between devices such as televisions, satellite or cable receivers, VCRs, game console systems, speakers and more. Typical RCA cables will have two or three color coded connectors. RCA audio cables have two connectors: red (right stereo) and white or black for left […]
- Relational Database Management System RDBMS
Short for relational database management system and pronounced as separate letters, a type of database management system (DBMS) that stores data in the form of related tables. Relational databases are powerful because they require few assumptions about how data is related or how it will be extracted from the database. As a result, the same […]
- RDF - Resource Description Framework
RDF is short for Resource Description Framework. RDF is a general framework for describing website metadata, or “information about the information” on the website. It provides interoperability between applications that exchange machine-understandable information on the Web. RDF details information such as a site’s sitemap, the dates of when updates were made, keywords that search engineslook […]
While RDF is a general framework for describing a Web site’s metadata, RDFPic is a tool developed by the W3C that authors can use to embed RDF metadata inside JPEG images. Using RDFPic authors see a side-by-side view of the image and a text form where you input data entry. RDFPic is copyrighted by the […]
- Remote Debug Interface (RDI)
RDI is short for Remote Debug Interface The Remote Debug Interface (RDI) is an Application Programming Interface (API) that defines a standard set of data structures and functions that abstract hardware for debugging purposes. *The Remote Debug Interface has for ten years served as a useful and widely adopted interface between debuggers and debug target […]