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A 6O *(,(L δ1 ( 1( *,( K3./9 ρ A (, +.)(,* 1(,21( ( δ1 (3 1(,21( 3.+ 1*(,* (.( (3,)3( O3,13 δ1, ( 6 * ( (3J 66 δ1 6 A 6A,,* ( *(,(L ɛ 9 *+ ɛ 3 *( 1,-+ (3 A 6A,,* +,1(.L /A ρ J 3* * 1(,21(, *( * )3 ( 6- (3( ɛ 3 (3 6A,,* J 1(,21( 13,*, U,+ J 13,* / 1(,21( 1*,( / ( / 1(,21( C = {c1, c 2,...,c n } 13 (3( cj = (i j, s j, d j, a j, v j ) 9 2 j n 9 *+ s j 1 = i j ck = (i k, s k, d k, a k, v k ) 9 1 k n 1 9 J M ( (3( 3 A,*) D( 6. ( 6*( d k = true *(, 1(,21( 9 *+ (3( 13 1(,21( A ( K,)*+ KL (3 *(,(L A C+,*( (3, 2.+ JN 1* K + ( 6- (3( 3 K* ),-* C sn (3,R(,* KL / (3 -.,+,(L 6,+ J a1 a 2... a n i1 v1 v 2... v * ++,(,* ( 9 (3 1.+ K (39 +,S*( 13,* (3( 6/ / (3 n C A -.66,*),)3( / (3 A -.66,*) -.,+,(L 6,+ J!'*'! "%!" $ ),-* (3 Q6,-* / 0 1(,21( 9 1(,21( 1.+ 1*(,* 9.*,* 1AK,*(,* O,(3 (39 A,*/A (,* O3,13, 1*,++ *,(,- KL (3, (3 K 1( / (3 13,* 9 KL * / (3 +.)(J * 13 1 A *+ ( K (C* ( C6 (3,*/A (,* /A /..,*),*( (3 3*+ / (3 O3 + *( *+ ( C*O,( O3* 1(,*) (3 13,* O3* 6-,*) (3,)3( / (3 K 1(J F"<$ B@&'Z$"'@& /.. / (3 6(,,*-.-+,* (3 13,* 1* K ( (+ ( C6 (3 *,D (,-,*/A (,* 1*2+*(,.9,( 3.+ K * )3 ( () A (3+ (3 (3* 6 K.,19 ).K. 6,(L / (3 1(,21(,* (3 13,* 9 *+ ( *1L6(.. 1A A *,1(,* K (O* (3 6(, O 3* 1(,21( K,*) (*A,((+ J 13 ( (,.( ( Q61(9 3O-J B$' I"$ $ZI'@ B$' I"$& 66 +.)(9 9 O*( ( A,* **LA J ( 6 1(,21( δl c l = (δ l 1, δ l, true, a, v) 9 *+ O*( ( +.)( (3,)3( â a ( J δ l+1 δ.+l C*O K ( 9 K ( O.+.,C ( A,* **LA ( J l 1 3( δl δl δl+1,( 1* +, (, (3 1(,21(,( O.+ +,* cl+1 = (δ l, δ l+1, d, â, v) *L 19 K (,*(+ / *+,*),( ( *+ K(3 *+ ( *+ δl+1 cl cl+1 δl 1 C (, (,21( + 1(,* (,21( M NJ 3.+ (3* δl 1 δl 1 1( (3 1(,21( cr = (δ l 1, δ l+1, d, â, v) O3,13 1* 3- +.,-+ ( δ O,(3 ( -.,*),(,+*(,(LJ l δ l+1 7=

@IX?'@ / *1L6(,*, 1A A * OL ( A,*(,* 1*2+*(,.,(LJ (,21( 1* K O3..L 6(,..L *1L6(+ M.*) O,(3 A *+A +(N,*) A CL O3,13, *.L C*O* ( 6(, (3( *+ ( C*O (3,*/A (,* (3(, *1L6(+ J 66 * *(,(L 1( (3 1(,21( *+ *1L6(,( ρ c = (ρ, γ, d, a, v) O,(3 (3 CL J (3* *+ (3.( k ρ ek (c) ( γ 9 (..,*),* O3( C,*+ / γ 11 1*(.,( (,*,( 3.+ 6*( ek (c) ( ρ J (, *( *(,. / γ ( C*O Q1(.L O3(, O,((*,* ( K K. ( 6-,( 11,)3( ( 9 c ρ O3 1* -,/L (3 -.,+,(L / (3 6/ KL,*) (3 CL J (3 *(,(L k 1* ),* *L,*/A (,* /A ( KL QA,*,*),( M A,*) (3L + ek (c) *( 6 (3 CL N9 O3,13, 666,(,/ + *(..O +.)(,* *+ k c (3 *.L 1*1* *+ J / +.)(,*,..O+ *+ O*( ( +.)( ρ γ γ,(,)3( ( A (3 *(,(L 9 1* ( 6-,( +.)(,*,)3( ɛ γ ek (c) ( 9 *+ C (, (3 666,( 1(,21( J ρ ρ cɛ γ 1* (3* ),- c O3,13 1.+ K (3 )3( ( K ( J ɛ ɛ 4.)(,* /,)3( ((+,* 6(,..L *1L6(+ 1(,21( 1* K A (,)3(/O+ J / *.L A / (3 2.+ / 1(,21(9 / QA 6. (3 (3,(L *+ -.,+,(L 2.+9 *1L6(+ 9,(, (,.. 6,K. / (3 K 1( / (3 1(,21( ( 1( 1(,21( / +.)(,*) (3,)3(J 3 2.+ 1* K 16,+ ( *O 1(,21( -*,/ (3 *(,(L 16L,*) (3A + *( C*O (3, A *,*) J *.L (3,),*( / 1(,21( 13,* *+ ( K K. ( *+(*+ O3(,)3( 6-* KL (3 13,*,( A L -* 3- +1,++ KL,(./ 3O ( +1,K (3,)3(,*) DQ6,* J 13 +1,6(,* 1.+ 6,K.L K,*1A 63*,K. ( (3 -* O,(3 ( K,*) *1L6(+ J (,. * )3 / (3 -,2 / 13,* ( K K. ( 131C O 3( (3,*(1(,* / (3 13,* 1(,21( -.,+,(L +(, J '!" "%!" * (L6,1. 11 1*(.,( (,* (3, * *(,(L (3( 6-,+ ρ -,1 *+ O,...( *L *(,(L ( O3,13,( 39 +,1(.L,*+,1(.L9, + (3,R(,* (3 -,1 J 6- (3 (3,R(,* (3.-*( â 1(,21( *+ ( K 1U,+ J 3 1 1.+ K,(./9 (3 6-9 ρ A (3,+ 6(LJ O,.. *( (L ( 1-.. 6,K,.,(,J *(+ A (3( + *( C6 (1C / (3 1(,21(,( 3, + *+ (3( (3 U,+ ρ 1(,21(.OL *(.*) O,(3 (3 U (9,* 13 * + O3,13..O L -,21(,* J * A 19 / QA 6. O3* A / ρ 1.,*( **,*) * A ( 1+ O,(3 * () 61 / 1(,21(9 (3 K- U,A *( A L K ( (,1(J -*,/ (3 1.,*( 1* 1U, (3 1(,21( /A +(K A,*D 7

(,*+ KL A (3 *(,(L9 (3 1.,*( O.+ (,.. *+ ( 1*(,* * )3.),1 ( 1U, (3 11( 1(,21( /A (3 +(K9 O3,13 A,)3( K 1 *(6+ 1(,-J * 13 1,( O.+ K K(( / (3 -,1 6-,+ ( 1U, (3 U,+ 1(,21(9 O3,13 1* K * ( K 6( / (3 -,1J.. 1- (3 11 1*(.,( (,* (3 )3 * QA 6.J / * *(,(L ɛ O*( ( (3 -,1 6-,++ KL ρ 9,( O,..,)* U ( O,(3,( 6,-( CL *+ *+,( ( ρ J 6* 1,6( ρ 131C (3,)*(,* (3 U (J ( (3* 6 1+ ( 131C (3 1(,21( *( 6 / 9 6 36 2(,*+,-,+..L9 K ( (3* KL 131C,*),/ (3L /A -.,+ 13,* J.,+,(L / 1(,21( 13,*, 131C+,*) A (3+ 1..+ ( 6. + 1D (,* J.O, * QA 6. / + 1(,* / 1(,21( 13,* 1*(,*,*) (3 1(,21( 9 K ( (3 6 1, *(,..L (3 A )+. / (3.*)(3 J / (3,*6 (, -.,+ 13,* / 1(,21( M +2*+,* J J7N9 (3 61 / + 1(,* O,.. 6+ 1 * 1(,21( (3O, (3 61 O,.. /,.J (ρ, δ 1, true, a 1, v 1 ) + (δ 1, δ 2, true, a 2, v 2 ) + (δ 2, ɛ, d, a 3, v 3 ) = (ρ, ɛ, d, a 1 a 2 a 3, v 1 v 2 v 3 ) M J7N / (3 -.,+,(L 6,+ *1A 6 (3 A A *( O3* (3 13,*, 131C+ *+ (3,R(,* a1 a 2 a 3, * )3 ( 11 (3 -,19,JJ a1 a 2 a 3 â 9 (3 13,* 3 K* -,2+ ( 6- (3( ɛ 3 11,)3( ( (3 -,1J - A L 3-.1. 6.,1L.9 3O-J 61,..L,* (3 1 / +.D )(+ 6A,,*9 (3 - A L *( 116(.. -.,+ 1(,21( 13,*J QA 6.9 (3-1.+ 3-.,( / *(,(, O3,13,( + *( ( ( *, / 1(,21(9 *+,/ 1(,21( 1*(,* 13 *,,( O,.. *( K 116(+ 9 *+ (3 13,*, KC* J 3 -,2 O,....L 131C (3,*+,D -,+. 1(,21( K/ 6/A,*) ( 6. + 1(,* 9 (3,.,((. 6,*(,* (L,*) ( -,/L *,*1A 6.( 13,* J *.,* 131C 1*,* A 1 K.O 9 3O-9 (3(,(, K( ( *.L 6/A (3A *1 (3 13,* 3 (3O, K* / *+ ( K -.,+ J *1 (3 13,* 3 K* / *+ ( 6- (3 11,)3( / ɛ 9 O3( A,*, ( -,/L (3( (3 *(,(L O,(3 O3A ρ, *)(,(,*) O,(3..L, ɛ J.(3 )3 (3 U ( O,)*+ KL ɛ 9 (3 (,.., (3 6,K,.,(L / 6.L ((1C J (3*(,1(,*,..L +* (3 )3 A C,*+ / 13..*)D6 * 6(1.9,* O3,13 (3 13..*) *+ *+A +( ( (3 (3 6(LJ 3 1,6,*(,( 6,-( CL ( *1L6( (3 +(9 *+ (3* *+ (3 +( K1C ( (3 13..*) O3 1* +1L6(,(,*) (3 1.,*( 6 K.,1 CL *+ -,/L (3( (3 +(, (3 A (3( O,),*..L *( ( (3 1.,*(J 3 6 1 / (3*(,1(,* S1(,-.L 1. (3 1(,21( 13,*,*(. 6 O3,13 6- (3( (3 *(,(L U (,*) 11 ( 1 1* K..O+ 7:

( 11,( J 3. 6 / (3 Q A 6. 13,* / 1(,21(, +6,1(+,*,) J7J delegator ( δ delegator 1, δ 2, true, a 2, v2) δ 1 δ 2 (ρ, δ 1, true, a1,v1) ( δ 2, ε, d, a3, v3 ) service provider ρ ε proves possession of private key client ε,) J7.,*( (3,R(,* 1(,21(. 6 J /(* (3 1.,*( O,... O*( ( (3*(,1( (3 -,1 6-,+ *+ -,/L (3(,(, ( (+ ( 6-,+ (3 -,1 (3 1.,*( O*(J 3,, 61,..L,A 6(*(,/ (3 -,1 6-,+ *+ A / (3 1.,*( 1 ( 6D /A (3 -,1J ),* 9.6 / 1(,21(, *++ 6/J (, 3O*,*,) JJ 3 +.)(,*) *(,(, γ1 *+ γ2 3O*,* (3 2) A *(,(, (3( ɛ ( (,*(+ 1J 3L 1.+ -* K O*+ KL ɛ *+ 3- K*,)*+ (3 (C / 1..1(,*) +(9 K+ * O3,13 (3L 1.+ A C +1,,* )+,*) (3 ( (O(3,* / -, -,1 6-,+ J delegator ( γ delegator 1, γ 2, true, a 2, v 2) γ 2 γ 1 (γ 2, ρ, d, a 3,v 3) ( ε,γ 1,true, a 1, v 1) service provider ρ ρ proves possession of private key client ε,) J -,1 6-,+ (3,R(,* 1(,21(. 6 J E

*.L *(OC 9.O D.-. 3+O ++ O + (,+*(,/L A D 13,*J *(*(OC,*),*(+ 1+ (3 1*16( / A 66,*) *,-. +D +,*(.O D.-. ++ J (,..9 / 3 A * (3 *,-. ++ K,*) ( A,*).L K,(L * AK O,A 61(,1. *+ +,T 1.( ( A AKJ..-,( (3 6K.A 9 *O *A,*) 1*16( K+ * 3( *A O +6(+ J ( *A..L A *,*)/. *+ 6* *1K. (Q( (,*)J 3, 6 6, ( 1( 3,)3.-.9 *,U,+*(,2 / 3(9,* ++,(,* ( *(*( 0(1. M 0N ++J (,..9 (3 3( *A 9 O3,13 1.+ K (3 )3( / A *A *,1 / (3 0 ++9 1.+ *( K + O,(3,* (3 0 61C( (3 1(. ++,*),*/A (,* J 3/9 OL ( (*.( (3 3( *A ( (3 0 ++ 3+ ( K *)+ J 3 A 66,*) /A 3( *A ( 0 ++ + ( K A,*(,*+,*,*). 2. *,*). 3(J (3 3( 1.+ C6 (3, A 66,*),*/A (,* 6 ( +( KL /(13,*) (3 2. O,(3 0J (OC +A,*,(( O.+ (L6,1..L DA,. (3 A,*(,* / (3 2. K ( *L 13*),* (3,.1. *(OC9 ( )( (3 13*) A + -,,K. ( (3 ( / (3 *(*(J.*) O,(3 (3 )O(3 / (3 *( (3 K*+O,+(3 1* A + KL 13 +A,*,((,- (C )O 9 *+,( K1A 66*( (3( *O. (,* O U,+ J 3 4A,* A L(A M4 N, (3(. (,*,(, *O (3 A AK / (3 0 0 6(1.,( (3(, 6*,K. / *A. (,* J * --,O / (3 4, ),-* 39 *+ A +(,.+ +1,6(,* 1* K / *+,* 7:9 79 J 3,. (3 A ). / (3 4 O ( 3*+. (3 3( *A ( 0 ++ A 66,*)9 )*. /.* O. )3( /,* (3 +,)* J,*1 * *(*(DO,+ L(A (C.( / OC ( ( 6 9,(, *K. ( Q61(,)*,21*( K*2(,* ( * J,( (*+9 (3 4, K. / A (3* * 6 6 J * /1(9,(, +,(,K (+ +(K (3( 1* K + ( A *) *L C,*+ / +(9.*) (3 +(, *( ( *,(,- ( K (+,* +(K 11,K. KL *L*J 7

3 1+,* (3 +(K,*+Q+ KL (3 +A,* *A 1,(+ O,(3 (3A 9 O3,13 (L6,1..L 3( *A 9 K ( 1*. K (3 C,*+ / *(,(, *A J 3 ( /.. +,S*( -. KL O3,13 +(,,*+Q+,*( 4 +(K /A +A,* *A 61J 3,. (3 -. 1.+ K 13*,*.A ( *L OL9 ( 13,- +,(,K (+ +(K (3L *+ ( K 13* (3( (3L,*+,1( 6,(,*,* 3,13,1. ( 1( J +A,* *A 61, (3/.OL ( 1( +.,C (J (3 ( 1( *,*+Q / (3 +(K9,(, *(,. (3(,( K C6(,* 1*,(*( ((J (3O, A / (3 K*13 1.+ K 1 ( S /A (3 (9 *+ U, )+,*) *L *+,* (3 K*13 O.+ /,.J * (3, (3,9 (3 (A, + ( / ( K(3./ *+ *+,*(*. *+J * (3 4 9 +A,* 1* K (3 )3( ( K K( / ( (3( 6*( +A,* *A 61J,) 8 J7 3O A.. *A 61J 3 +A,* 3 K* 1,1.+ J fi tm tv hut lut cc cs tcm lidocaine camphor,) 8J7 3 +A,* J 3 *A / +A,* 1*,( / 1*1(*(,* / (3.K. / 13 *+ * (3 6(3 /A (3 ( / (3 K( ( (3 ( / (3 O3. (J *,) 8 J79 (3 +A,* *A, 1U,+ KL /..O,*) (3 A 63,R+ 6(3 (O+ (3 (J 3 A Q,A A.*)(3 /.K., > KL(J 3 A 6(L (,*), -+ / (3 ( / (3 (9 *+ *+ (3( 3- (3 A 6*( A L *( 3- (3 A.K.J 3 4 (*++,(./..O.K. ( 1*(,* *L 1((J */( *(.L9.( / (3 PQ,K,.,(L (3( (3, /+A O.+ (3O, S, +* OL O,(3 (3 /1( (3(.. 1A 6,*,* (3

4 1,**,(,-J 1 / (3,9 1 1**(.OL K 6-+ 9 -* (3 )3 (3 (*++ 1A A *+ (3(,( K +* O3*- 6,K.J 3.K. + (3 1**( K ( *L K,*L K 1(. (3* > 8 1((,*,R9 *( -*,/ *1++ O,(3 (3 1A A *.L + K > 8 *1+,*) J A L(A (3( (3 4 3- (3, O*. / (3 C,*+ / +A,* *A (3(..O+ J,*(*1 9 (3. +2*+,* = 3.+ K (,2+ O3* *A,*) A,. +A,* J 3 4 61,21(,*. +2* 3O +A,* *A 3.+ K 6*(+ (Q(J 4( + 6( / (3.K.,* (3 (Q( 6*((,* J A 131(9 13 +( *+ **D6,*(K. 131( / (3.K. *+ ( K 16+,JJ (3L *+ ( K 6*(+,*) A (3* * 131(J R*, ) 6 / +A,* *A *+ +( (3( )-*+ KL (3 A (3,(LJ 66 *A - M 1(,* 8 J8N, (3,((,- / (3 *(, +A,* 9 Q16( / (3 K+A,* 9 O3,13, A *D )+ KL *(3 *A -J 3 O3. +A,* (3*, *(.+ KL * *+ (3 A (3,(L9 *+, (3 +,-,++,*( (.( (O R*J 3 (3,(L A *),*) 1.+ 3- / (3 +.)(+ (3 (3,(L / 6,K. K+,*( +A,* / J *A R*9 (3 *A / (3 K( O,(3,* (3 R* (3(, (3 1.( * ( (3 ( M/ (3 O3. (N, + J +A,* *A 61 *+ (3,*/A (,* 1,(+ O,(3 (3 *A (D )(3 /A 4 +(KJ 3,*/A (,*, 1A 6+ / D1..+ D 1 1+ M NJ +,S *( C,*+ /,*/A (,*..L U, +,S*( () /A (9 13 C,*+ 3,( O* 1 1+ (L6J, +,S*( (L6 3- K* +2*+,* 9 *+ A 1* K +2*+ (3 *+, J 3 3- (3 A 3,)3D.-. ( 1( 9 )+. / (3 (L6J 3 ( 1(, 3O*,*,) 8 JJ A *) (3 (3,*) (3 1+ 1*(,* (3 *A / (3 *+ ( O3,13 (3 1+ 6(,*9 *+ (3 (,A D(D.,- M N -. / (3 1+ J 3.(( -.,*+,1( (3 * AK / 1*+ / O3,13 (3 A L K 113+ J 3.( / (3 2.+9 4 9 3 (L6D+6*+*(,*(*. ( 1( J 3 (L6 / * 1* K +(A,*+ KL. C,*) ( (3 (L6 -. 1*(,*+ O,(3,*,(J 3 4 2.+. 1*,( / * A 2.+J 2.+ O,(3 (3 A A *(,1 A L 3- +,S*( ( / 6,K. -.,* +,S *( *-,*A *(9,( A L K +,K. / (3 /A ( / 4 2.+ / (3 A (L6 ( -L +6*+,*) * (3 C,*+ / 6(1. /A,.L,*(*1 / 6(1. (3( (3 4,*/A (,* 1*1*J QA 6.9 * 0 ++

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NAME TYPE CLASS TTL RDLENGTH RDATA,) 8 J 1 1+ ( 1( J, K,(,*,R.*) ++ 1.+ K + KL A (3 6( 1.J (3 * ),-* K-9. 3-1. -. 9 O3,13 61,2 (3 6( 1.,( (3( (3,*/A (,*,* 4 66., ( J 3 /A ( / 4. +6*+ * (3, -. J 13 (L6 *+ 1.,)*+ (3, O* *,U * A K J 3 1. -. 79 O 3,13 3 (3 A *A *,1 / *(*(9, 1 *(.L KL / (3 A ( 1A A *.L + *J 3 9 / K-,(L9 /(* *).1( ( A *(,* (3 1..()(3 O3* +,1,*) 1+ (L6 *+ (3.1(,* 1,(, J U L 6(,*, * ((A 6( ( (,- ( /.. (3,* 1(,* +(K O3,13 3- (3 A +A,* *A 9 (L69 *+ 1.J 13 (, A (,A /+ ( * J *(.L9 U ( / ( / (3 (L6 A ( 1A A * 9 *, *++ O3* * O,3 ( C*O (3 0 ++ 16*+,*) ( +A,* *A J 3 4 2.+ / 3- (3,A 6. ( 1( 3O*,*,) 8 J J 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 ADDRESS,) 8J 4 ( 1( J *(3,A 6(*( (L6 /, J 1+ / (3( (L6,*+,1( (3( (3 +A,* *A ( O3,13 (3 1+ 6(,*, 1(..L *.L *.,9 *+ (3( (3 6,A L *A / (3., O*, 1*(,*+ O,(3,* (3 4 2.+ / (3 J 3.*)(3 / (3 2.+ -, +6*+,*) * (3.*)(3 / (3 *A J 3- (3 A ( 1( 9 K ( (3 +A,* *A 61,2 3( O3,13, (3,((,- / (3 R* ((,*) ( (3 +A,* / (3 J 8

,(3,* 4 A )9 6*(+,* (3 K,*L /A +1,K+,* (3, 136(J 3* (+,* *A - 1*2) (,* 2.9 (3 (L6,1..L 6*(+,* 6,*(K. *+ +K. /A J 3 /A ( + O3* 113,*) 1A 6.(.L +6*+ * (3,A 6.A *((,* J 1 1+ 1,+ /A *A - ( *(3 O,(3,* 4 A D )J 3 A ) 1* K (*A,((+,(3 4()A 0(1. M 40N +()A,* KL( (A /A + O,(3 *A,,* *(. 0(1. M 0N :J 40 61C( 6/K.9 (3L S.O -D 3+ *+ K(( 6/A *1J O-9 (3 / 40 K,*).,A,((,* ( (3,R / A ) (3( 1* K *(J 3 4 61,21(,* +2* (3 A Q,A A,R / A ) (3( 3-40 +()A (3 (*6( ( K 7 KL( MQ1. +,*) (3 40 3+NJ, (L6,1..L 3( *+ O,.. 2(,* 7 KL(9 K ( 6., 1*(,*,*) A *L *(, A L O.. Q1+ (3.,A,(J -*,*). 1*(,*,*) * 0 1(,21(9 /,*(*19 1.+,.L K (.)J * 13 1 (3 6* 3.+ K ( *1(+ *+ (3 ( *1(,* P),* (3 A ) 3+ M K.O N 3.+ K (,* + ( 1*/A ( (3 4 (*++ J 3*.- 2*+ (3( (3 P) 3 K* (,( 3.+ KA,( (3 U L,*) 0J *,*(..,)*(.- A L 2( 131C (,/ (3 6* 1*(,* (3 *(, *O 1(,*,/ 9 (3, * *+ ( 0J 3 40 (*++,(./ + *( +2* 13-7 KL(.,A,((,* J ( / (3 1 *( *(*( 1* 3*+. 61C( / 6 ( 7EE KL(,*,R O,(3 ( /)A *((,* 9 9 *+,( 1* K Q61(+ (3( (3 -) M Q,A A */ *,(N / (3 *(OC 3+O,* O,.. 1*(,* ( )O J -* *O 9 A *(OC *.L.,A,(+ KL (3 A Q,A A,R (3( 1* K 61,2+,* * 0 +()A 3+9 O3,13, > KL(J * 61(,19 61C( O,(3,)*,21*(.L.) 4 6L.+ (3* 7 KL( 1.+ K (*D A,((+ K (O* A *L *(OC * +,/ (3 4 /(O 116(+.) 4 0 61C( J K1CO+ 1A 6(,K. A +,21(,* ( (3 4 6( 1. O3,13 O.+..O.) 6* 3 K* ))(+ J 3 /A ( / 4 A ), (3 A / K(3 U, *+ 6.,J.. A ) 3-3+ / (3 A,R *+ ( 1( J 3 ( 1(, 3O*,*,) 8 J8 J *.L K,/ +1,6(,* / (3 2.+,* (3 3+ ),-* 3J A,*/A (,* 9 / ( J H5 7 > DK,(,+*(,2 + KL (3 1.,*( ( A (13 6., ( ((*+,*) U,9 KL (3 - ( +(1( + 6.,1(+ U (J 3 -. 1* K /.L 13* KL (3 6)A (3( )*( U LJ

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ID QR OPCODE AA TC RD RA Z RCODE QDCOUNT ANCOUNT NSCOUNT ARCOUNT,) 8 J8 3 ( 1( / 4 A ) 3+J P) O3,13, (,/ (3 A ), 6*J ; B 5 -. (3( (( (3 6 6 / (3 A ) J L6,1..L E M N9 O3,13,*+,1( (3( (3 A ), U ( / * (J P) O3,13, (,/ (3 *A - (3( *( (3 6*, (3,D ((,- / (3 +A,* (3( (3 U L 1*1*+ J B P) O3,13, (,/ (3 A ) O ( *1(+ J 5 P) O3,13, (,/ (3 1.,*( O*( (3 *A - ( 6 (3 U L 1,-.LJ P) O 3,13, (,/ (3 *+ / (3 6 * 66 ( 1,- U, J -+ J ( K R J B 5 -. (3( 61,2 (3 C,*+ / 9,/ *L9 (3( (3 *+ / (3 6* *1 *(+ O3* ((A 6(,*) ( 2*+ * *O ( U LJ 3 3+,,A A +,(.L /..O+ KL 4 *(,,* (3 U (,* 1(,* 9,* (3 *O 1(,* 9,* (3 D (3,(L 1+ 1(,* 9 *+,* (3 ++,(,*. 1+ 1D (,* J 3 U (,* 1(,* *(, *( 1 1+9 K ( *(, (3( 1*(,* +A,* *A 9 (L6 -. 9 *+ 1. -. O3,13 ()(3 61,/L O3,13 3.+ K /(13+ /A (3 4 O3* A C,*) U LJ A - 6,(, / (3 +( (3( A C 6 4 +(KJ 3 +(K, +,-,++,*( R* O3,13 +,(,K (+ A *) -J 3 >

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0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 TYPE KEY TAG ALGORITHM CERTIFICATE or CRL,) J7 4 ( 1( J (,-.L9,*(+ / 1(,21(9 (3 1+ A L 1*(,* 1(,21( -1(,*.,( M NJ 3.),(3A -. 61,2 (3 33 *+ (3 6 K.,1 CL.),(3A +,* (3 1(,* / (3 1(,21(J 3 -. + (3 A / (3.),(3A 2.+ / (3 *+ M 1(,* 8 J > N Q16( (3( (3 -. R,*+,1( (3( (3.),(3A 3,(3 *( K*,*1. ++,* (3 4 61,21(,* (3(,(, *C*O* ( (3 *(,(L (3( 1(+ (3 J 3 1 *( 61,21(,* (( (3( (3 CL (), 7 > DK,( -. O3,13 3.+ K 1A 6 (+ /A CL AK+++,* (3 1(,21(J 3, +2*,(,* + *( A ( 11 *( / (3 /1( (3( *(.. 1(,21( 3- Q1(.L * 6 K.,1 CL AK+++,* (3A J A 3- **9 *+ A 3- A (3* *J A,*) (3(,(K. CL 1* K 13* 9 (3 +1,6(,* / (3.),(3A ( K + / 6/A,*) (3 1.1.(,* 1* K / *+ /A 77J / 1.1.(,*) (3 -. 9 (3 CL *+ ( K (*.(+,*( (3 (3 A /A (,( O.+ 3- O,(3,* J / (3 CL (L6, *( +2*+,* 4 9 (3 (*.(,* *(..L 1**( K +* J * (3( 1 (3 () 3.+ K ( ( R J / (3 (), *( 1.1.(+ 9 / O3(- * 9 (3.),(3A -. A (. K ( ( R -*,/ (3.),(3A, C*O* *+ +2*+,* 4 J 3,, K1,(, 6,K. / () 1.1.(,* ( L,.+ (3 -. R 9 *+ (3 R () KL,(./ 1**( K (C* (,*+,1( (3( 1.1.(,* 3 *( K* 6/A + (..J 3 4 61,21(,* + *( L *L(3,*) K ( (3 /A (,* O 3,13 * 0 1(,21( 3.+ K,* (3 1(,21( 2.+ J O- 9 (3 1**,1. DQ 6,* /A (, * K-, 13,1,* (3 * (3(,)*( 1* (3* K 131C+ +,1(.L /A (3,/ *1LJ (3 A * (3 DQ6,* 3.+ *( K K > 8 *1++ J,*) K > 8 O.+.,*1 (3,R / (3 1(,21( J ((+,* 1(,* 8 J 9 61, ( 6A, A O,(3,* 4 A )J 3,. (3, * *+ / (3 1(( O,(3,* 4 A ) ( K =DK,( 131(9 R* 2. (L6,1..L (Q( 2.9 A *(,*+,* 1(,* 8 J8 J