This shell script generates a printable password “sheet”. Passwords on the sheet can be referenced by row.column or row.column.subcolumn. This password sheet must be distributed in a secure manner; however, once two or more parties have the same password sheet they can specify passwords openly without an adversary knowing the password values. Each sheet is unique, generated by data from /dev/urandom, and the script automatically generates hashes of the file for ease of identification.
Sample output is included below the script.
#! /bin/sh
NOW=`date +'%Y-%m-%d_%H-%M-%S'`
sleep 1
Title="File Generated ${NOW}"
rm -f DataFile_${NOW}.txt
dd if=/dev/urandom skip=`date +'%M%H%S'` \
| strings \
| tr -dc '[:punct:][:alnum:]\n' \
| awk 'BEGIN{Line="";Ctr=0;}
{
Line=$0""Line;
Ctr = Ctr + length($0);
if (Ctr > 16) {
print substr(Line, 1,16);
Line="";
Ctr=0;
}
}
' \
| awk -vTitle="${Title}" '
BEGIN{
irow=-100;
icol=1;
srow="";
printLine();
printHeader1(1);
}
END{
printHeader1(-1);
printLine();
print "| Reference Character Set |";
printf("|");
for (i=32;i<127;i++) {
printf("%c",i);
}
print "|";
printLine();
print "|Method for specifying an entry: Odd Rows:.. Even Rows:.|";
printLine();
}
function printLine() {
printf("+");
for (i=32;i<127;i++) {
printf("-",i);
}
print "+";
}
function printHeader1Line(item) {
switch(item) {
case 1:
printf("| %-93s |\n", Title);
break;
case 2:
printf("| ");
for (i=1;i<6;i++) {
if ((i % 2) == 0) {
printf("column.subcolumn ");
} else {
printf(" column ");
}
}
print " |";
break;
case 3:
printf("| ");
for (i=1;i<6;i++) {
printf("---------------- ");
}
print " |";
break;
case 4:
printf("| ");
for (i=1;i<6;i++) {
printf(" %2d ",i);
}
print " |";
break;
case 5:
printf("| row ");
for (i=1;i<6;i++) {
printf("%2d.1 %2d.2 %2d.3 ",i,i,i);
}
print "row |";
break;
default:
printf("| --- ");
for (i=1;i<6;i++) { printf("================ "); } print "--- |"; } } function printHeader1(direction) { phimax=6; if (direction > 0) {
for (phi1=1;phi1<=phimax;phi1++) { printHeader1Line(phi1); } } else { for (phi1=phimax;phi1>=3;phi1--) {
printHeader1Line(phi1);
}
printHeader1Line(1);
}
}
function getChar(idx) {
return sprintf("%c",(idx % 26) + 97);
}
{
if (irow > 25) {
iData="";
for (i=1;i<=16;i++) { oneChar=substr($0,i,1); if (!((oneChar >= "A" && oneChar <= "Z") || (oneChar >= "a" && oneChar <= "z") || (oneChar >= "0" && oneChar <= "9") || (oneChar == " "))) { oneChar = getChar(i+NR); } iData=iData""oneChar; } } else { iData=$0; } if (irow % 2 == 1) { srow = substr(iData,1,4)" "substr(iData,5,4)" "substr(iData,11,4)" "srow; } else { srow = iData" "srow; } ++icol; if (icol >= 6) {
if (irow > 0) {
printf("| %2d %s %2d |\n",irow,srow,irow);
} srow="";
icol=1;
++irow;
if (irow > 50) {
exit;
}
}
}' \
| unix2dos \
>> DataFile_${NOW}.txt
md5sum < DataFile_${NOW}.txt > DataFile_${NOW}.txt.md5
sha1sum < DataFile_${NOW}.txt > DataFile_${NOW}.txt.sha1
ls -lt DataFile_${NOW}.txt*
Sample Output:
+-----------------------------------------------------------------------------------------------+
| File Generated 2016-03-08_00-32-54 |
| column column.subcolumn column column.subcolumn column |
| ---------------- ---------------- ---------------- ---------------- ---------------- |
| 1 2 3 4 5 |
| row 1.1 1.2 1.3 2.1 2.2 2.3 3.1 3.2 3.3 4.1 4.2 4.3 5.1 5.2 5.3 row |
| --- ================ ================ ================ ================ ================ --- |
| 1 tO"@ U$;q maVY Z$a4 !N[Q \'$< _*T1 $*8r tn:V ,[;1 Iyug Wu6C /YI( ~Miq D=!\ 1 |
| 2 *lImy#8XOa"QNM|z AA!3TumCi|U&YH'[ |I*g6D-}j]eqoUK5 hZN7;n7vKU>1['Kn pVq:n1lE#V0s//au 2 |
| 3 $U67 {R*V b3Q~ ]wy) L.#, }W4% hdRD Nln& U({9 &>V- 7@Q] J8@W S~k- "y\< 5lB1 3 |
| 4 >vDZ0Va}7Ro^cRVM IN9m7/.z4B(H@qUA ;iIS!-'_O&2-rWqh a}vfugqa#YV_,8y0 R''8DhkdoI'V!B1P 4 |
| 5 4~F0 }Yz= ;AK5 =kcx @\_e vYpe `>KY _U@d n6?n 1d/z @Hjk *f#T eWhc 9`NP 8]"J 5 |
| 6 T>v-*I?!M]:y5;+! b0`wg_4[},r*EnEG 5T[W1e};k3suG,GP ]XY|"_;%S_x}Yt]w 4_`yM#(4Qev*G@Tg 6 |
| 7 A6fq &m`K }\'d A^Z; >Dq$ SmTt *,cH ^K(m g04I X-n, $sK4 =9C5 `w79 6UbC N3XS 7 |
| 8 8cy-H#Hfq__y9"3b >PjSt&+@EODha<7u 6Ij9nI2X_NpJAKML @m^O{\#@W','7C}O l]HL%cs?yxwfCtQ^ 8 |
| 9 nQ\] -LWQ ;Rjl ky6. IZ~< Qer$ G$u+ '~hy }y=y Ac6T #Icn |?if yEEi 0Vxb /x,c 9 |
| 10 +MM&#;aR1S]v,5&| 0JtS4b}{Wm^eXwd6 *`~a]p11/TYAljL# E^b"i4Z`PFp;1;17 FQR}iVuT.7.Z_;uw 10 |
| 11 %Q.x {~Ty MN+u 5y,T !E`8 ;\8m J~'l Ncl` /M%e ]3Ir %%iw `95I C5Sm `k+2 Y5ic 11 |
| 12 UT:e#^k(D*aV.$D+ aCBXcvd!xTDN^6c9 l'}WjMVC0oaH='ky 2$DHT||4JBr0Xxv, aBP#*SL+v^j_X_kl 12 |
| 13 ]He+ xI(d g,y> 1fJ/ 7nct 0{x} DAI7 (d8[ e)]= f;;= x[uN .v8Q pBny =l}N :^c^ 13 |
| 14 @{;.V%p'C)c`gKZV -DZi:Zx?I!D{)i9- `zuJ~tYA}u7C/Xck ~'l;J]Qri_$oBSX\ C|E;?\eL4~UndR-y 14 |
| 15 ;=#O S[;q vM}o f^i; _/s" drvP QF|_ <:YJ ;o5z #+7n me>% kG`7 W.it PJ-E N5X< 15 |
| 16 TiuE?u.9i#]F/5.( F29D=}ug$ApJU&Od -8~dtqVz~@:NSG{0 xqbAkSQvfO^RK4yM \^pJPoVjmd_p@C#, 16 |
| 17 \BR% 9u}< @6Z[ 6T". P$qR @Rt* ~"4> az&G XHXr yqq! gb4H eGIx wApA .0G` 0wu9 17 |
| 18 WLdjBhq}!`.rRwZV U~?`n^HZ=Abx2:cp cAk&u0RzlXD->iM| ^~De28Md8WC$}=l0 cXPw4hLG*yI:-wLN 18 |
| 19 |)G} kl4, 4{5P 18!X ./$0 zAoH `8mw ~q$m g}x9 2Lsa XOql Rd6& :!r$ )/(\ "o}3 19 |
| 20 \u.$UyWH.aI,KJk% %&ODy`nrky\cHMs* MP.{#yrf%c36;>Mx %E5~R%qKLSxs/fX9 A~J$i/*\Qk,59d}8 20 |
| 21 &CF. Mt!s |#3y wgtt wgli 3PYQ TMdC \9~! c9c, +fH7 2wc/ Y^Wj K7D` H|=l $Vct 21 |
| 22 T%q+vsxq#w9wbhMS Bi8LF28^u(8ckhGk ArZK~D.q|Q|"'y"u oJ6%F""Ix*hn|z]` VRbo':!??/8_Pstv 22 |
| 23 ZMlv Rp:3 20^l RoVC D'A* ayT$ X36& )p6/ YDin ny<= :,_+ 0lRM `}X= [aN) d$~S 23 |
| 24 2mr!--,){>//[fW. 4Z;-YaM;+a-erqT8 -\kZK?{M9FZ/W~[) jnLO+HMbXqv5Pf*l Seb}Xv2*APs[&cyZ 24 |
| 25 ;;Ne i>EJ 7aiW P{E< ^hI? A{3e @[QK 4Fm` H*@2 EKX\ {T;` gfc^ P.!1 Y>wP #>bv 25 |
| 26 mnopD6syuVdx3NTL UmnoEqr0PuvG2yza xlanopqSWtuvuhTQ ytD55o4qrX6bvcxy ijRvmndp6MsWlvBo 26 |
| 27 r1tu vA3y UcdR grmt EdwH ubcB pKas FuBw o07c lZI1 stjZ v9cp nopU rMso IyzF 27 |
| 28 wxNzabdJ9Wq4iWkl zwPkQHOcdnfZu98k QMTxetabFdWVJDKj wu0r7yz2gSdeUgUE stBvwxUzanfGZogK 28 |
| 29 tode fOhi vmfo MbcT efgB 5lMM aDba eeY8 cmDm 2xyH cdew Olnl Gyzl bsLh gK0H 29 |
| 30 zsLy0lESovq8Stgv YTrbaklmnobea4tY efgzi7RHRlH4NrjA FPkRx61RSmnop6rs OH93ghTRkl2n0sd3 30 |
| 31 emfo nqXN vIaS lhJf o5qr uAwi kkMl 5Rpc 37Sw wiQl lsoC CUuv hijt rm0i WZbx 31 |
| 32 qqstRvSxDzagTdeG OqrsCpv8x8iabkEg G9tTstuvQUihWbDr 9opqrIuuvbkjzJXc s1kpqrLRuIRx3GQb 32 |
| 33 1wxY GJtO fDzi opwd orEz txJm tmqN xSfb BeOP qWnv wbGG ZdeG rsdu vwxj bc3O 33 |
| 34 wobyJV1hijkY7Zog Gmb3dTtgKijklmbo yv400dmhqhGZWlJg OypFbSUAFhKe3kcD TOkz0k3dAut2lUkK 34 |
| 35 rghi jhFC oq7s 0qoS 3rR9 dBqF VrVF 0ijE tupY EdZY Ihss mSqp Ild3 OZ4G GmBo 35 |
| 36 Cll5o95r30uIPPbz jlMsKycGVlkuvqJV ioilFnjFqpTtu78d Xcj6Mnpopqy3nWva Ghijknm9AfqkdMuF 36 |
| 37 OElE FSvE zubc oY1y sJXB qznp TiYq KE5u xySa mnoN q5At OEQ0 7mTm 3TCs FwSy 37 |
| 38 ovwxyeaM9de4vA2L tH9w0yBNbpdXfphF uofvwuVaabGcGfp1 zfouJwxyPVTccefe kwote8wx46NbXdeM 38 |
| 39 Zab2 Ye5W jklj yRal iqXf TXkl 1IDa uide hiji Psyz 5RlB LnVa h0xM zWbT cghb 39 |
| 40 jDChktkvcWoShrLS rffgh1j6lmco3ErO 2dewthi5kdmnYpDr Dc9e7rJijkO116Rq aPLMmjShTjql9hoo 40 |
| 41 GkZB nhJq kuhw APkl M5bI lttR hmCC O5n0 gntS gWij 6lmv trKJ fohS jklm 8qLU 41 |
| 42 GEqrf5u0w9ozunw0 UrUT4tglvwxIPanM mSo1qrEtm2wtIEv6 Zm4oYqHQXgw8Pyza Sl0i7sqDsthKRcyJ 42 |
| 43 auKw 2Xzz sebk 4Euq MFyd cv9f r906 YA12 N4de z6sZ 3owW fccL L00U tukl zfx5 43 |
| 44 kzh6Z1eYgZPjPlWY xuVab5weaAhiCbnz Cxyza5FVefOAijOe rexh5kFNGifgQDjW uHK1yzuucAlfgh5k 44 |
| 45 K7fo GGjk 3MXm qder wcbF XIop Mk9y 6ghJ lmnx Dbcx rffh elEn zFbA 9sYd zQDS 45 |
| 46 ivVlopoNiusWdTw6 ht0HUFMoL1UsQuvw ghoXqlMlpIq9whWn iPKijklmnoFyDAtu el5hEWllDno8iFs6 46 |
| 47 ZPpL SjtZ xOS9 bTTp nrsm wYht 0dn4 ZVEq VsfA UmmY 3KO3 5eYa jk3m yMpq auTp 47 |
| 48 sDuv2wyPUUsdef0A tcYumRkkLu3v9efg yoskovwxWzaxcdjw psrytT3wOuXxTjIm rpLSs1uvZxAvHJcc 48 |
| 49 xlzP b3eI d4j4 wxyz 2xXd ghvj vbzy zXbc fchi Z0hs yza3 ergB cRZk SyEg lspg 49 |
| 50 VdGfgx7Qk6m1Cpq2 Mcdefle7c3lHTqoq x3cOofgwiysannnp iarc9efphMXiCmnt 8zab9AfigLgBpcFL 50 |
| --- ================ ================ ================ ================ ================ --- |
| row 1.1 1.2 1.3 2.1 2.2 2.3 3.1 3.2 3.3 4.1 4.2 4.3 5.1 5.2 5.3 row |
| 1 2 3 4 5 |
| ---------------- ---------------- ---------------- ---------------- ---------------- |
| File Generated 2016-03-08_00-32-54 |
+-----------------------------------------------------------------------------------------------+
| Reference Character Set |
| !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~|
+-----------------------------------------------------------------------------------------------+
|Method for specifying an entry: Odd Rows:<row>.<column>.<sub-column> Even Rows:<row>.<column>|
+-----------------------------------------------------------------------------------------------+