PRPFSIG1 ;WISC@ALTOONA/CTB-ESIG MAINTENANCE ROUTINE ;11/22/96 4:45 PM
V ;;3.0;PATIENT FUNDS;**6**;JUNE 1, 1989
;ROUTINE FOR MAINTAINING FIELD 14 (ELECTRONIC SIGNATURE CIDE), FILE 470.1
DECODE(LEVEL0) ;Extrinsic Function to return hashed electronic sig to readable form.
;returns "" if unsuccessful
NEW RECORD,VERSION,PERSON,SIG,CHECKSUM
;get record and check version
S RECORD=$G(^PRPF(470.1,LEVEL0,0)) I RECORD="" QUIT ""
S VERSION=$P(RECORD,"^",22)
S PERSON=+$P(RECORD,"^",14)
I VERSION'="",VERSION'=1 Q ""
S SIG=$P(RECORD,"^",15)
I VERSION=1 G D1
D ;decode e signature less than version 1
S X=$$DECODE^PRPFSIG(SIG,LEVEL0,PERSON)
QUIT X
D1 ;decode e signature for version 1
S CHECKSUM=$$SUM^PRPFSIG(LEVEL0_"^"_$$STRING(RECORD))
QUIT $$DECODE^PRPFSIG(SIG,PERSON,CHECKSUM)
ENCODE(LEVEL0,USERNUM,Y) ;Encode e signature for version 1 only
;Parameter passing entry point
NEW RECORD,RECORD4,SIGBLOCK,CHECKSUM,OLDUSER
;get record
S RECORD=$G(^PRPF(470.1,LEVEL0,0))
I RECORD="" S Y=-1 QUIT ;-1 no master record
S OLDUSER=+$P(RECORD,"^",14)
I OLDUSER=0 S $P(RECORD,"^",14)=USERNUM
I OLDUSER>0 S USERNUM=OLDUSER
S USERNUM=+USERNUM
I USERNUM=0 S Y=-3 QUIT ;-3 no user num available
S SIGBLOCK=$P($G(^VA(200,USERNUM,20)),"^",2)
I SIGBLOCK="" S Y=-2 QUIT ;-2 no sigblock in file 200
I $P(RECORD,"^",15)'="" S Y=-4 QUIT ;-4 cannot re-sign record
S:$P(RECORD,"^",23)="" $P(RECORD,"^",23)=$$NOW^PRPFSIG
S CHECKSUM=$$SUM^PRPFSIG(LEVEL0_"^"_$$STRING(RECORD))
S $P(RECORD,"^",15)=$$ENCODE^PRPFSIG(SIGBLOCK,USERNUM,CHECKSUM)
S $P(RECORD,"^",22)=1,$P(RECORD,"^",17)=$$SUM^PRPFSIG(SIGBLOCK)
S ^PRPF(470.1,LEVEL0,0)=RECORD
S Y=1 QUIT
REMOVE(LEVEL0) ;Entry point to remove e signature from record
;NOT an extrinsic function
NEW I,RECORD
S RECORD=$G(^PRPF(470.1,LEVEL0,0))
F I=14,15,17,22,23 S $P(RECORD,"^",I)=""
S ^PRPF(470.1,LEVEL0,0)=RECORD
QUIT
VERIFY(LEVEL0) ;extrinsic function to verify version 1 signature. Returns 1 if valid, 0 if not valid
NEW RECORD,VERSION,VALCODE
;get record variables
S RECORD=$G(^PRPF(470.1,LEVEL0,0))
S VERSION=$P(RECORD,"^",22),VALCODE=$P(RECORD,"^",17)
I VERSION_VALCODE="" QUIT 1
QUIT ($$SUM^PRPFSIG($$DECODE(LEVEL0))=VALCODE)
STRING(X) ;Build String of critical fields
Q $P(X,"^",1,13)_"^"_$P(X,"^",16)
--- Routine Detail --- with STRUCTURED ROUTINE LISTING ---[H[J[2J[HPRPFSIG1 2330 printed Dec 13, 2024@02:02:01 Page 2
PRPFSIG1 ;WISC@ALTOONA/CTB-ESIG MAINTENANCE ROUTINE ;11/22/96 4:45 PM
V ;;3.0;PATIENT FUNDS;**6**;JUNE 1, 1989
+1 ;ROUTINE FOR MAINTAINING FIELD 14 (ELECTRONIC SIGNATURE CIDE), FILE 470.1
DECODE(LEVEL0) ;Extrinsic Function to return hashed electronic sig to readable form.
+1 ;returns "" if unsuccessful
+2 NEW RECORD,VERSION,PERSON,SIG,CHECKSUM
+3 ;get record and check version
+4 SET RECORD=$GET(^PRPF(470.1,LEVEL0,0))
IF RECORD=""
QUIT ""
+5 SET VERSION=$PIECE(RECORD,"^",22)
+6 SET PERSON=+$PIECE(RECORD,"^",14)
+7 IF VERSION'=""
IF VERSION'=1
QUIT ""
+8 SET SIG=$PIECE(RECORD,"^",15)
+9 IF VERSION=1
GOTO D1
D ;decode e signature less than version 1
+1 SET X=$$DECODE^PRPFSIG(SIG,LEVEL0,PERSON)
+2 QUIT X
D1 ;decode e signature for version 1
+1 SET CHECKSUM=$$SUM^PRPFSIG(LEVEL0_"^"_$$STRING(RECORD))
+2 QUIT $$DECODE^PRPFSIG(SIG,PERSON,CHECKSUM)
ENCODE(LEVEL0,USERNUM,Y) ;Encode e signature for version 1 only
+1 ;Parameter passing entry point
+2 NEW RECORD,RECORD4,SIGBLOCK,CHECKSUM,OLDUSER
+3 ;get record
+4 SET RECORD=$GET(^PRPF(470.1,LEVEL0,0))
+5 ;-1 no master record
IF RECORD=""
SET Y=-1
QUIT
+6 SET OLDUSER=+$PIECE(RECORD,"^",14)
+7 IF OLDUSER=0
SET $PIECE(RECORD,"^",14)=USERNUM
+8 IF OLDUSER>0
SET USERNUM=OLDUSER
+9 SET USERNUM=+USERNUM
+10 ;-3 no user num available
IF USERNUM=0
SET Y=-3
QUIT
+11 SET SIGBLOCK=$PIECE($GET(^VA(200,USERNUM,20)),"^",2)
+12 ;-2 no sigblock in file 200
IF SIGBLOCK=""
SET Y=-2
QUIT
+13 ;-4 cannot re-sign record
IF $PIECE(RECORD,"^",15)'=""
SET Y=-4
QUIT
+14 if $PIECE(RECORD,"^",23)=""
SET $PIECE(RECORD,"^",23)=$$NOW^PRPFSIG
+15 SET CHECKSUM=$$SUM^PRPFSIG(LEVEL0_"^"_$$STRING(RECORD))
+16 SET $PIECE(RECORD,"^",15)=$$ENCODE^PRPFSIG(SIGBLOCK,USERNUM,CHECKSUM)
+17 SET $PIECE(RECORD,"^",22)=1
SET $PIECE(RECORD,"^",17)=$$SUM^PRPFSIG(SIGBLOCK)
+18 SET ^PRPF(470.1,LEVEL0,0)=RECORD
+19 SET Y=1
QUIT
REMOVE(LEVEL0) ;Entry point to remove e signature from record
+1 ;NOT an extrinsic function
+2 NEW I,RECORD
+3 SET RECORD=$GET(^PRPF(470.1,LEVEL0,0))
+4 FOR I=14,15,17,22,23
SET $PIECE(RECORD,"^",I)=""
+5 SET ^PRPF(470.1,LEVEL0,0)=RECORD
+6 QUIT
VERIFY(LEVEL0) ;extrinsic function to verify version 1 signature. Returns 1 if valid, 0 if not valid
+1 NEW RECORD,VERSION,VALCODE
+2 ;get record variables
+3 SET RECORD=$GET(^PRPF(470.1,LEVEL0,0))
+4 SET VERSION=$PIECE(RECORD,"^",22)
SET VALCODE=$PIECE(RECORD,"^",17)
+5 IF VERSION_VALCODE=""
QUIT 1
+6 QUIT ($$SUM^PRPFSIG($$DECODE(LEVEL0))=VALCODE)
STRING(X) ;Build String of critical fields
+1 QUIT $PIECE(X,"^",1,13)_"^"_$PIECE(X,"^",16)
