/: 

, 

AJ'M MDI>~ BOa 120-18/l 

Sub.jeot: Cert1t1cat1cn or Public Z.v ,13 (Crnrt;o SeCNrltJ' Iav) 

1. AJSA JlaJllOl'llnda 120-J.8 and 120-19, 15 M17 am l3 Jllll9 1950 

reapeot1wl.7, are herebJ' npene4ed. 

2. All penamel, Jd.l1ta17 and oirtlian, entering en 4ut7 

wi:t:.b t.h1• AgemJ7, rill ~d Public lev 513 and omplete the oertif:laaticm. attached thereto. Thi• v111 'be eoompliaheci durlng 

1n1 tial pooeaa1Dg into the Agtm.07 'b7 the Pe:remmel Di't1.e1Cl1o The 

•1pecl oerts.tioatea v111 be forwarded to the SeourltT Cc:mtrol Df.Tl· 

aim ttr ftleo · 

3o Publlo I.aw '13 will 'be 1"8T1...S. qmrterq 1»7 all ptl'Bmm.el .. Ott1oe and Statt D1rta1cn Chieta will DOt1f7 the Chiet, Seouri"Q" Cm· 

trol DS:r1a1m, in vrlttnc, 'b7 the 15th ot the 11a11t1l follolr1D8 the m4 ~ eaoh oaleD!ar qm:rtor tba't this baa 'bee eooaapl:lllhedo In41T14ml 

oert1ftoat1mw 81'9 not requlredo 

J'OR TBB .D:nB7rOR: 

DIST:mt7rI<lf I 

GK011 l:o ~emnr-.-. 

Oolanel 1 AOC 

M.jlltezit Oenenl 

Declassified and approved for release by NSA on 05-08-2014 pursuantto E.O. 1352a 
• 

• 

, . " • REF ID:A58022 • 

PUBLIC LAW 513 

Alst CONGRESS, 2nd SF.SSION 

l1Tt-G: \5 

Sec+c•"A 19'& 

LJsc.., 

"To enhance further the security of the United States by preventing dis-· 

closures of information concerning the cryptographic systems and the communication intelligence activities of the United States. 

Be it enacted by the Senate and House of Representatives of the United 

States of America in Congress assembled, That whoever shall knowingly and 

willfully communicate, furnish, transmit, or otherwise make available to an 

unauthorized person, or publish, or use in any manner prejudicial to the . safety or interest of the United States or for the benefit of any foreign 

government to the detriment of the United States any classified information 

(1) concerni~..g the nature, preparation, or use of any code, cipher, or cryptographic system of the United States or any foreign government; or (2) concerning the deeign, construction, use, maintenance, or repair of any device, apparatus, or appliance used or prepared or·planned for use by the United States 

or any foreign government for cryptographic or communication intelligence 

purposes; or (3) concerning the communication intelligence activities of the 

United States or any foreign government; or (4) obtained by the processes of 

communication intelligence from the communications of any foreign government 

knowing the same to have been obtained by such processes, shall be fined not 

more than $10,000 or imprisoned not more than ten ~ars, or both. 

SEC. 2. (a) The term "classified information" as used herein shall be 

construed to mean information which, at the time of a violation under this Act, 

is, for reasons ~! national security, specifically designated by a United 

States Government ag~ncy for limited or restricted dissemination or distribution. 

--_.., 4, ~·. q.~, ~~ ~,-

\ 

""'"'-~}' The terms 'il~~~', '11ciph~rY1, and "cryptographic system" as ~sed herein shall be construed to incl~de in their meanings, in addition to ~ their usual meanings, any method of secret writing and any mechanical or .I 

}_ 

electrical device or method used for the purpose of disguising or concealing, 

the contents, significance, or meanings of communications. ('&So..:l'a. ~fvJ~ . .-J ... <WJ" 

s-,1, e-,•c.-.~, ~cA.~) 

( c/ Thb. term "foreign government" as used harein shall be 

construed to include in its meaning any person or persons acting or purporting 

to act for ~r on behalf of any faction, party, department 1 agency, bureau, or 

military force of or within a foreign country, or for or on behalf of any 

government or any person or persons purporting to act as a government within 

a foreign country, whether or not such government is recognized by the United 

States. 

(d) The term 11 co.mrnunication intelligtmce" as used herein shall 

be construed to mean all procedures and methods used in the interception of 

communications and the obtaining of information from such carrmunications by 

other.than the intended recipients. 
• REF ID:A58022 • • 

I .~· 

~ ( e) The tt3rm "unauthorized person" as used herein shall be 

construed to mean any person who, or ag~ncy which, is not authorized to receive information of the categories set forth in section l of this Act, by 

the Presid~nt, or by the hdad of a departmdnt or agency of the United States 

Government which is expressly designated. by the President to engage in communication int~lligence activities for the United States. 

SEC. J. Nothing in this Act shall prohibit the furnishing, upon lawful 

demand, of information to any regularly constituted committee of the Senate 

or House of Representatives of the United States of .America, or joint committee thereof." 

Signed by President Truman 

13 May 195<' 
*3-P-ESti~- e 

~~~~·. 

The follOlfing definitions or security clasaitioations have been 

agreed by the Combined Chiefs of Statts-

(a) TOP SECRET 

Inf'ormation and material, the unauthorised disclosure or which 

would cauae exceptionally grave damage to the nation. 

(b) SECRr:I' 

Inf ormatian and material., the unauthorised disclosure or which 

would endanger national security, cause serious injury to the 

interests or prestige or the nation, or would be of great 

advantage to a f'oreign nation. 

(o) CONFIDENTIAL. 

Information and material, the unauthorised disclosure or which 

would be prejudicial. to the interests or prestige or the nation, 

or would cause administrative embarrassment or dif'f'iouJ.ty, or 

be or advantage to a roreign nation. 

{d) RESTRICTED 

Information and material which requires security protection other 

than that determined to be TOP SECRET 1 SECRET or CONFIDEUTIAL. 

TOP SECRET