RSA

RSA may refer to:

Cryptology and security

• RSA (algorithm), an algorithm for public-key encryption
• RSA Factoring Challenge, a computational number theory challenge aimed at factorizing a given set of semi-prime numbers
• RSA numbers, a set of numbers that have as factors two prime numbers (semi-prime keys)
• RSA (security firm), a U.S. network security provider, a division of EMC Corporation
• RSA Conference, an annual cryptography convention

Government and private organizations

• The IOC and FIFA country code for South Africa, formally the Republic of South Africa
• Rehabilitation Services Administration, a federal agency under the United States Department of Education
• Road Safety Authority, a statutory organisation of the Republic of Ireland
• Royal New Zealand Returned and Services' Association, an organization dedicated to the welfare of veterans of New Zealand's military
• Royal School of Artillery, the principal training establishment for artillery warfare in the British Army
• Royal Scottish Academy, an independent, privately-funded Scottish art institute
• Royal Society of Arts, formally the Royal Society for the encouragement of Arts, Manufactures & Commerce, a British multi-disciplinary institution
• RSA Insurance Group, a UK-based insurance company formed by the merger of Royal Insurance and Sun Alliance
• Retirement Systems of Alabama, the administrator of the pension fund for employees of the state of Alabama
• Rabbinical Seminary of America, a New York, NY yeshiva
• Ridley Scott Associates, a British film and commercial production company
• RSA Examinations Board, a UK examination board that merged to form Oxford, Cambridge and RSA Examinations

Other

• Rational Software Architect, part of IBM Rational Application Developer
• Remote Supervisor Adapter an out-of-band management interface on IBM servers
• Revenu de solidarité active, a French social benefit for people with low incomes
• New Hampshire Revised Statutes Annotated, the codified law of the state of New Hampshire, United States
• Residual stress analysis, the study of the influence of residual stress on a material's mechanical properties
• Respiratory sinus arrhythmia, the heart rate variation due to respiration
• Responsible Service of Alcohol, occupational training required in several Australian states for persons serving alcohol to patrons
• Rsa RNA, partially-characterised non-coding RNA from Staphyloccus aureus
• Roentgen Stereophotogrammetric Analysis, also called RadioStereometric Analysis, a method of calculating 3D orientation using X-ray images