Because of its hearing brief, a NSA/CSS has been heavily exposed around cryptanalytic research, continuing the operate of its predecessor agents which experienced been responsible breaking several World War II codes and cyphers (see, for example, Purple code, Venona, and JN-25).

Headquarters for the National Security Professional is at Fort George G. Meade, Maryland, approximately ten miles (16 km) northeast of Washington, DC. NSA has its have exit murder of the Baltimore-Washington Parkway, labeled "NSA Employees Only". A shell of a operations at the NSA is tough to determine from either unclassified information, however of these clue is the electricity usage of NSA's headquarters. NSA's budget for electricity exceeds United states$21 million by the season, getting it the title 2nd big electricity consumer in the entire state of Maryland. Exposure keep around shown there are just about 18,000 parking zone at a places, although virtually all guesses use at times put a NSA's manpower at in the area of double that total; employees come sited worldwide.

Its assure government communications brief has required NSA around production of communications devices & software program, in the production of semiconductors (there is a chip fabrication plant at Ft. Meade), within cryptography search, & catching by using personal industry for even things, devices, and research these are non itself prepared to respond with or supply. Over again, this continues responsibilities inherited from either its predecessors (watch SIGABA).

Agency history
A origins of a National Security Professional may be traced to an organization originally established in the Department of Defense, under the command of the Joint Chiefs of Staff as the Armed Forces Security Professional (AFSA), in May 20, 1949. A AFSA was to exist as responsible directing a communications & electronic intelligence operation of a military intelligence units - a Army Security Professional, Naval Security Class action & the Air Click Security Service. All the same, the professional experienced little power & lacked a centred coordination mechanism. the creation of NSA resulted from either a December 10, 1951, memo sent by Walter Bedell Smith to James B. Lay, Executive Secretary of the National Security Council. A memoranda found that "control over, and coordination of, the collection and processing of Communications Intelligence had proved ineffective" and recommended the survey of communications intelligence. A proposal was approved in December 13, 1951, and a learn authoritative in December 28, 1951. A report was completed by June 13, 1952. Usually called a "Brownell Committee Report," when committee chairperson Herbert Brownell, it surveyed the history of U.S. communications intelligence & recommended a require for a lot greater degree of coordination & counsel at the national level. When a vary in the security professional's title indicated, a role of a NSA was extended beyond the armed forces.

NSA was created inside June 1952 by Executive Order of President of the United States Harry S. Truman [http://www.nsa.gov/truman/truma00001.pdf]. Truman's Executive Choose was itself classified & remained unknown to the public for to the higher degree a generation.

Involvement with non-government cryptography
NSA has been exposed inside debates all about public policy, each as a behind-a-scenes consultant to more departments, & directly when you took & fallowing Vice Admiral Bobby Ray Inman's directorship.

A NSA was embroiled around contention on its involvement in the creation of the Data Encryption Standard (DES), a standard & public block cipher used by the U.s.. When you took development by IBM in the 1970s, the NSA recommended changes to the algorithmic rule. There was suspicion a professional experienced deliberately weakened a algorithmic rule sufficiently to enable it to eavesdrop whenever compulsory. a suspicions were that a critical component — the and then-alleged S-boxes — had been altered to insert the "backdoor"; & that a key length got been reduced, making it more easygoing for a NSA to discover the key utilizing massive computing power.

But, a public reinvention of the system called differential cryptanalysis suggested that one of the changes (to the S-boxes) had actually been suggested to harden a algorithmic program against this -- so publicly unknown -- method of attack; differential cryptography remained publicly unknown until it was independently reinvented & published occasionally decades late. A shortening of the 128-bit key used by the IBM submission to the nominal 64, however actually an effectual 56, bits is believed to use been the studied weakening of the algorithm, making possible an exhaustive search for the key by those sustaining sufficient computer power & funding.

Even because of former disceptation, a involvement of NSA in the choice of a successor to DES, the Advanced Encryption Standard (AES) was limited to hardware performance testing (watch AES competition).

NSthe was a major streaming video player in the debates of the mid to late 1990s regarding US munitions export regulations. Cryptographic package & devices got hanker been classed by owning fighter planes, tanks, cannons, and atomic bombs as governable munitions.

A NSA/CSS has, at days, attempted to limit a publication of academic search into cryptography; e.g., a Khufu and Khafre block ciphers.

ECHELON
Independent article: ECHELON

NSA/CSS, within combination sustaining a tantamount agents in the United Kingdom (Government Communications Headquarters), Canada (Communications Security Establishment) and Australia (Defence Signals Directorate), and New Zealand (Government Communications Security Bureau), and otherwise called a UKUSA group, is believed to be responsible, among more items, a operation of the ECHELON system. Its capabilities come suspected to include the ability to monitor a big proportion of the globe's transmitted civilian telephone, fax and data traffic. A rules hwhen as one of its first bases a nominally RAF-run station at Menwith Hill near Harrogate, Yorkshire. Technically, well-nigh totally modern telephone, cyberspace, fax & satellite communications are exploitable due to recent advances in technology and the 'open air' nature of a lot of radio communications around the world.

Numerous humans oppose NSA's presumed collectiin operations, assuming that a NSA/CSS infringes on Americans' privacy by spying on the United States' own citizens. Yet, a NSA's United States Signals Intelligence Directive 18 (USSID 18) strictly prohibits a interception or even collection of info astir "..US persons, entities, corporations or organizations..." while forgoing expressed written legal permission from either a Law office General of the United States. A Supreme Court has ruled that intelligence can't conduct surveillance against Western citizens. There are naturally two or even three extreme circumstances in which collecting in a United states of americthe respire would exist as allowed forgoing a USSID 18 release, like by using civilian distress signals, or sudden emergencies (like Sept. 11; all the same, the USA PATRIOT Act has significantly changed privacy legality).

It has been suggested that around practice, NSA/CSS implements an sweep around legal restrictions in internal surveillance by getting partner agents spy on the citizens of more partner's countries, thereby avoiding illegal spying in their have citizens.

It used to be that, there keep close at hand been alleged cases of improper violations of USSID 18 that occurred within violation of the NSA's nonindulgent charter prohibiting such acts. Additionally, ECHELON is considered using outrage by citizens of countries outside a UKUSA alliance, by owning far flung suspicion that a United States government utilizes it for motives differently its national security, including political and industrial espionage. A hired purpose of the NSA/CSS is alone to get important foreign intelligence info on to National Security or even on-going military intelligence operations.

In fiction
A independent character of the radio drama Adventures in Odyssey is the former employee of the NSA, a fact that plays into story arcs from either 1989 through 1996. The 1992 film Sneakers features NSA agents. The 1997 film Good Will Hunting mentions the NSthe offering May Hunting a job when he turns the babies down. The 1998 film Enemy of the State shows NSthe agents tracking a human, utilizing advanced mike & real-instance satellite cd. The 1998 film Mercury Rising shows multiple NSthe agents working in a cryptography code called "Mercury." It as well shows a attempted assasination of a tyke world health organization breaks the NSA's unbreakable encoding code that he discovered around the magazine. The 2002 film Die Another Day shows an NSA agent working by using James Attach to save the world. In a Nintendo 64 video game Perfect Dark, Trent Easton, the corrupt head of the professional, utilizes professionals to clean his begrime operate. Season Deuce of the television series 24 featured NSthe as one of a organizations responsible preventing a detonation of a nuclear bomb around Los Angeles. Roger Stanton, a made-up director of NSA, is encountered to exist as a traitor, & the president ordered his interrogation & torture. The NSA besides was involved as a base for the fictional character Sam Fisher, the independent character inside Ubisoft's video game Splinter Cell. The novel Digital Fortress by Dan Brown is based principally within the (ficticious) section of the NSA's facility. The 2004 film The Incredibles featured NSA agents protecting a identities of superheroes and supplying them by having technology.

Staff

Directors

1952–1956 LTG Ralph J. Canine, USA 1956–1960 Lt. Gen. John A. Samford, USAF 1960–1962 VADM Laurence H. Frost, USN 1962–1965 Lt. Gen. Gordon A. Blake, USAF 1965–1969 LTG Marshall S. Carter, USA 1969–1972 VADM Noel A. M. Gaylor, USN 1972–1973 Lt. Gen. Samuel C. Phillips, USAF 1973–1977 Lt. Gen. Lew Allen, Jr., USAF 1977–1981 VADM Bobby Ray Inman, USN 1981–1985 Lt. Gen. Lincoln D. Faurer, USAF 1985–1988 LTG William E. Odom, USA 1988–1992 VADM William O. Studeman, USN 1992–1996 VADM John M. McConnell, USN 1996–1999 Lt. Gen. Kenneth A. Minihan, USAF 1999–2005 Lt. Gen. Michael V. Hayden, USAF 2005–Present Lt. Gen. Keith B. Alexander, USA

(America, USAF, & USN come a United States Army, United States Air Click, & United States Navy, severally.)

Deputy Directors

Dec. 1952–Nov. 1953 RADM Joseph Wenger, USN Nov. 1953–June 1956 Brig. Gen. John Ackerman, USAF June 1956–Aug. 1956 Maj. Gen. John A. Samford, USAF Aug. 1956–Sep. 1957 Mr. Joseph H. Ream Oct. 1957–Jul 1958 Dr. H. T. Engstrom Aug. 1958–Apr. 1974 Dr. Louis W. Tordella, USN Apr. 1974–May 1978 Mr. Benson K. Buffham May 1978–Apr. 1980 Mr. Robert E. Drake Apr. 1980–July 1982 Ms. Ann Z. Caracristi July 1982–June 1985 Mr. Robert E. Rich June 1985–Mar. 1988 Mr. Charles R. Lord Mar. 1988–July 1990 Mr. Gerald R. Young July 1990–Feb. 1994 Mr. Robert L. Prestel Feb. 1994–Oct. 1997 Mr. William P. Crowell Oct. 1997–June 2000 Ms. Barbara A. McNamara June 2000–present Mr. William B. Black, Jr.

Notable Cryptanalysts

Agnes Meyer Driscoll William F. Friedman Solomon Kullback Frank Rowlett Abraham Sinkov Louis W. Tordella

NSA encryption systems
NSA is responsible the encryption-related components inside these systems: EKMS Electronic Key Management System FNBDT secure narrow band voice standard Fortezza encryption based on personal crypto token around PC Card format KL-7 ADONIS off-line rotor encryption machine (post-WW Two to 1980s) KW-26 ROMULUS electronic in-line teletype encryptor (1960s–1980s) KW-37 JASON fleet broadcast encryptor (1960s–1990s) KY-57 VINSON tactical radio voice encryptor SINCGARS tactical radio with cryptographically restricted frequency hopping STE secure telephone STU-III older secure telephone

Past and present SIGINT activities
Ultra Magic (cryptography) Purple code VENONA project USS Liberty incident ECHELON