. REF ~ f ,,:..\ 

r ;1r ~,., ': 

A FSA I 'f 

eclassifi ed and a roved for r lease b NSA on 04-18-2014 ursuantto E .0. 1352 
~ 

.. ( 

t . REF ID:A65603 

Bii£T ... 

SlfiTIOlf J 

DISCUSCICN .100) R."EC01AfEND1lTION8 COlfCmaf.IIG 

INDIVIDUAL ITiil:S BW>llJ TD BOARp 

10. "Th• •tand apreasecl 'b7 the A.rJv-Ground Forces Equipment 

Rnin Board and b7 the fteatere 'With regard to .speech securit.7 

equipment mq be 8UlllDU"ized aa tollowa 1 

a. .An integrated radio and wire secure telept1one s;veta11 

should be the priaa17 means ~ tactical communication .. 

b. Adequate eecur • and light weight secur1 ty equipment, 

ia the predominam n.••d in achievifl8 such a communications system.. 

c. Dnelopment of improved epeeah eecuri ty equipment 

8hould be given th• highest priority. 

u. The Ar97 Security Agenc7 coneure in t.he im.port.ance of 

apeech securit.7 equipment and in the nece1tait7 ot g1Ying its develop--

•nt the highest priorit7. !h• speed, co.GY•ni•noe and the advantq•• 

ot direct per•onal contact obtained with TD1•• coamunication are 

1'ull.7 recegniz8d. However, certain tact I! must be con::;idered before 

a final decision ta reached to use Toice oOJDDUd.co.tion a• the priaey 

aeana ot tactical eommunicat.1.on. 

12. The eoaplex nature ot speech result• in aerioue teohnolog:loal 

ditficultiee wh.ieh .mu1t. be oYercome before both secure and light 

weight oiphOllT equipan t can be proTided. At the present •tac•• 

eecure equipment can be P!'ovided but euch equipment is large aad 

'~ I 

I 
_, 

,!.. 

•"' 

compl.a. Present light weight equipment is insecure and inadequate 

1n oth .. respects. It. .lllWlt be recognized that no solution i• now 

in sight 'Wbich will entireJ.7 overooae the problems involved and 

that 1 t will probabq be some years before equipment can be developed 

which is both email and aecure en011gb to be uaed on the YeJ7 111.despread basis contemplated by the Ground Forces. Furthermore, ehangea 

in the aoammi.catione system m1 be required to acco.11111Ddate suob 

idlproYed apee.oh aecurit7 equipnent. 

13. Another factor to consider in t.be 'Widespread use of telephone 

equipment is the lack ~ a permanent written record. In the ease of' 

SIGSALY, a high echelon secure ciphon.;r device, it was round necea1a17 

attera period of use to inat.a.11 record.era tor this purpose. 

)4. In view of the above, it ia recoanended that the dnelo.P-

•nt ot speech securit7 equipment be conti1U1ed 'Ill th the bigheat poaeible 

priori t;r with the aim ot ult1mate'.cy achieving the reeulta desired 

b7 the Ground Forces. 

15. One important decision "Which must be made in connection with 

the application of speech security to an integrated eommmication• 

ayste.m. concerna the plan used in app]3ing the equipment to the qatea. 

Tn general plane are poaaibles 

a. Securit7 equipment located at the usere with no intermediate security- dencea. 

b. Secur.L t;v for each link in the qatem p:rovid,ed b7 aeparate 

sets ot equipnent. Thie would aean that when a call puaea t.hrough 

aeveral 11Witchboards1 separate sets ot equipment located at the switch-

,,,,_ J , ... _ "".J 
, 

~--1p:A65603 

·~-=r.... : ..1-..1-..:::- j 

boards, and at the users, would· secure each link in the e7atem lildependent17. 

lh1l• (a) abo't'• is the more desirable alternative troa a 

.. curl t7 T1npo1nt, Id.nae the ueere can be certain t.hat adequate 

aecuri ty is being maintained over th• entire qst•, the ditf'1-

cult1es in providing an4 operating the ayetea make it thoroughq 

1mpract1eal. Interoo1111n.m1 cable security de'fieae would be required 

at every telephone. Thia will only be possible when a very small 

but h1ghq secure dmce is available. Purtheraore, every user 

would have to be in poesesaion ot the key eettinga required to 

coDumm11at• 111 th flTflr'T other uatll'. Thie ia obriouaq impractical 

in a bi~ integrated vat• from both aecurif.7' and operational 

viewpoints. :Xt is therefore recommended that plan (b) or 

a ~·· bet••n plane (a} and (b) be adopted. 

16. The Mediterranean Theater bae ax.press9d the desire for 

JBOre ext.am1ve uee ot tacaimile equipnent and recommend• the 

adaptation ot the RC-SS tacaimila eqlli.paent to receive the tape 

t~m an 11-209 converter. \'ihile thie adaptation mq •erYe a detin11i• 

cODIDUnications nelld it ia telt that empbaa1s Bhould ba placed on 

the development or enciphered. tacaimile (CD'AX). BT encipher_ed 

facsimile ia •ant a device which provides aecu.rity to the ta~aimile 

signal rather than normal taca.iJnile tranami.•9ion of a message 

previously enciphered ~ eom.e standard means. It se..s likeq that 

,... -.. - ) 

\\ I~ 

....... 'l..-, .. _,, -.:: 
I ~ 

-........._,.,,' ~~ "'-.._ 

• 

REF ID.;iA65603 ~ - . I .,.. ~ .-I 

r __i:IJ 1.!.:L~i .......... JI -IAllliillli 

a a•ed1 perbape not. cleaq recognized at the present ti.ms, exi•\a 

tar a CIFAI dfJVioe for transmitting classified maps, sketch••• 

photognphe, etc. The CITJ>iiographia Plan includes requirement..- tor 

tw type• of CIFAI den•••• (a) A portable device for uae 1n 

ferward echelon• ~ ciif ~ fixed plant. ~c· £or use between 

higher beadquartera. 

AUTHPXTIC.ATION DEVIC~ 

.,,.r / 

17. -.rh• ledi\erruerm Theater ha• indicated little need tor 

or uea ot authenticat1QD. Thia new 1• eontraI7 to that axpreaeed 

by \be Cook Board Repon am to that ot the ArJl\V' Seouri t;r Agencr. 

It 1• appreciated that habitual uae ot authent.ieation ia neither 

required nor desirable. On. the other hadd it. ia believed that there 

ia &T~ definite requirement tllat a means of a~thantication be 

available to be used llben eneiqy counter aaaaurea neceasi tate wch 

u••· 

CIPHl!:R DEVICES 

18. Jew emmaente were mde either in the Cook Board Report or 

b7 the '.l'heatera , on tlM cbject of cipher device• principally because ot the pri.aar.y inierest in voice rather than literal ccamnication. It ie 'belieYed however that there will al.wqe exis\ 

a requirenimt tar 11\W'al collllDW1ication because ot the compelling 

ad.Yantages which a!Jl' ~•corded cOJlllllDiaation poeseaaea. It i• 

a~nsl7 recommend.ad t.herefore that, in as igning priorit.J' to the 

development ot speeeh security eqaipment, the need tor improYe-

.mente 1n cipher dmoea not be torgotten. Duelopmnt projects 

"-»-- ... --=:-_~ 
allould. be continued llbicll haYe aa their aillls 

(a) Increased apeed ot operation ot "ott line11 de'ri.~••· 

(b) Bo transmission delq chargeable to security in the 

•••• ot "on lined devices. 

' (c) lteduction in size, weight and maintenance difficulties. 

(d) Ad.equate security consiatent with operational re-

' 

'r ''-~-··-tt .. - .. l __,