- PRCFAES1 ;WISC/LEM-ESIG MAINTENANCE ROUTINE ;5/20/93 9:27 AM
- V ;;5.1;IFCAP;;Oct 20, 2000
- ;Per VHA Directive 10-93-142, this routine should not be modified.
- ;ROUTINE FOR MAINTAINING FIELD 5.5 (ELECTRONIC SIGNATURE) FILE 421.2
- DECODE(LEVEL0) ;Extrinsic Function to return hashed electronic sig to readable form.
- ;returns "" if unsuccessful
- NEW RECORD,RECORD05,VERSION,PERSON,SIG,CHECKSUM
- ;get record and check version
- S RECORD=$G(^PRCF(421.2,LEVEL0,0)) I RECORD="" QUIT ""
- S RECORD05=$G(^PRCF(421.2,LEVEL0,.5))
- S VERSION=$P(RECORD05,"^",1)
- S PERSON=+$P(RECORD,"^",5)
- I VERSION'="",VERSION'=1 Q ""
- S SIG=$P(RECORD,"^",6)
- D1 ;decode e signature for version 1
- S RECORD=$G(^PRCF(421.2,LEVEL0,0))
- S CHECKSUM=$$SUM^PRCUESIG(LEVEL0_"^"_$$STRING(RECORD))
- QUIT $$DECODE^PRCUESIG(SIG,PERSON,CHECKSUM)
- ENCODE(LEVEL0,USERNUM,Y) ;Encode e signature for version 1 only
- ;Parameter passing entry point
- NEW RECORD,RECORD05,SIGBLOCK,CHECKSUM,OLDUSER
- ;get record
- S USERNUM=+USERNUM
- S RECORD=$G(^PRCF(421.2,LEVEL0,0))
- S RECORD05=$G(^PRCF(421.2,LEVEL0,.5))
- I RECORD="" S Y=-1 QUIT ;-1 no transaction record
- S OLDUSER=+$P(RECORD,"^",5)
- I OLDUSER>0,+$P(RECORD05,"^",1)<1,$P(RECORD,"^",6)'="" S Y=-4 QUIT ;-4 cannot re-sign record with version <1
- I OLDUSER>0 S USERNUM=OLDUSER
- I USERNUM=0 S Y=-3 QUIT ;-3 no usernumber for filing
- S SIGBLOCK=$P(RECORD05,"^",2)
- I SIGBLOCK="" S SIGBLOCK=$P($G(^VA(200,USERNUM,20)),"^",2)
- I SIGBLOCK="" S Y=-2 QUIT ;-2 = no signature block in file 200
- I OLDUSER=0 S $P(RECORD,"^",5)=USERNUM
- S:$P(RECORD,"^",10)="" $P(RECORD,"^",10)=$$NOW^PRCUESIG
- S CHECKSUM=$$SUM^PRCUESIG(LEVEL0_"^"_$$STRING(RECORD))
- S $P(RECORD,"^",6)=$$ENCODE^PRCUESIG(SIGBLOCK,USERNUM,CHECKSUM)
- S $P(RECORD05,"^",1,2)="1^"_SIGBLOCK
- S ^PRCF(421.2,LEVEL0,0)=RECORD
- S ^PRCF(421.2,LEVEL0,.5)=RECORD05
- S Y=1 QUIT
- REMOVE(LEVEL0) ;Entry point to remove e signature from record
- ;NOT an extrinsic function
- NEW RECORD,RECORD05
- S RECORD=$G(^PRCF(421.2,LEVEL0,0))
- S RECORD05=$G(^PRCF(421.2,LEVEL0,.5))
- S $P(RECORD,"^",5,6)="^"
- S $P(RECORD,"^",10)=""
- S $P(RECORD05,"^",2)=""
- S ^PRCF(421.2,LEVEL0,0)=RECORD
- S ^PRCF(421.2,LEVEL0,.5)=RECORD05
- QUIT
- VERIFY(LEVEL0) ;extrinsic function to verify version 1 signature. Returns 1 if valid, 0 if not valid
- NEW RECORD05,VERSION,SIGBLOCK
- ;get record variables
- S RECORD05=$G(^PRCF(421.2,LEVEL0,.5))
- S VERSION=$P(RECORD05,"^",1),SIGBLOCK=$P(RECORD05,"^",2)
- I VERSION_SIGBLOCK="" QUIT 1
- QUIT ($$DECODE(LEVEL0,TRANS)=SIGBLOCK)
- STRING(X) ;Build String of critical fields
- NEW RECORD
- Q $P(X,"^",1)_"^"_$P(X,"^",10)
- --- Routine Detail --- with STRUCTURED ROUTINE LISTING ---[H[J[2J[HPRCFAES1 2644 printed Feb 18, 2025@23:28:46 Page 2
- PRCFAES1 ;WISC/LEM-ESIG MAINTENANCE ROUTINE ;5/20/93 9:27 AM
- V ;;5.1;IFCAP;;Oct 20, 2000
- +1 ;Per VHA Directive 10-93-142, this routine should not be modified.
- +2 ;ROUTINE FOR MAINTAINING FIELD 5.5 (ELECTRONIC SIGNATURE) FILE 421.2
- DECODE(LEVEL0) ;Extrinsic Function to return hashed electronic sig to readable form.
- +1 ;returns "" if unsuccessful
- +2 NEW RECORD,RECORD05,VERSION,PERSON,SIG,CHECKSUM
- +3 ;get record and check version
- +4 SET RECORD=$GET(^PRCF(421.2,LEVEL0,0))
- IF RECORD=""
- QUIT ""
- +5 SET RECORD05=$GET(^PRCF(421.2,LEVEL0,.5))
- +6 SET VERSION=$PIECE(RECORD05,"^",1)
- +7 SET PERSON=+$PIECE(RECORD,"^",5)
- +8 IF VERSION'=""
- IF VERSION'=1
- QUIT ""
- +9 SET SIG=$PIECE(RECORD,"^",6)
- D1 ;decode e signature for version 1
- +1 SET RECORD=$GET(^PRCF(421.2,LEVEL0,0))
- +2 SET CHECKSUM=$$SUM^PRCUESIG(LEVEL0_"^"_$$STRING(RECORD))
- +3 QUIT $$DECODE^PRCUESIG(SIG,PERSON,CHECKSUM)
- ENCODE(LEVEL0,USERNUM,Y) ;Encode e signature for version 1 only
- +1 ;Parameter passing entry point
- +2 NEW RECORD,RECORD05,SIGBLOCK,CHECKSUM,OLDUSER
- +3 ;get record
- +4 SET USERNUM=+USERNUM
- +5 SET RECORD=$GET(^PRCF(421.2,LEVEL0,0))
- +6 SET RECORD05=$GET(^PRCF(421.2,LEVEL0,.5))
- +7 ;-1 no transaction record
- IF RECORD=""
- SET Y=-1
- QUIT
- +8 SET OLDUSER=+$PIECE(RECORD,"^",5)
- +9 ;-4 cannot re-sign record with version <1
- IF OLDUSER>0
- IF +$PIECE(RECORD05,"^",1)<1
- IF $PIECE(RECORD,"^",6)'=""
- SET Y=-4
- QUIT
- +10 IF OLDUSER>0
- SET USERNUM=OLDUSER
- +11 ;-3 no usernumber for filing
- IF USERNUM=0
- SET Y=-3
- QUIT
- +12 SET SIGBLOCK=$PIECE(RECORD05,"^",2)
- +13 IF SIGBLOCK=""
- SET SIGBLOCK=$PIECE($GET(^VA(200,USERNUM,20)),"^",2)
- +14 ;-2 = no signature block in file 200
- IF SIGBLOCK=""
- SET Y=-2
- QUIT
- +15 IF OLDUSER=0
- SET $PIECE(RECORD,"^",5)=USERNUM
- +16 if $PIECE(RECORD,"^",10)=""
- SET $PIECE(RECORD,"^",10)=$$NOW^PRCUESIG
- +17 SET CHECKSUM=$$SUM^PRCUESIG(LEVEL0_"^"_$$STRING(RECORD))
- +18 SET $PIECE(RECORD,"^",6)=$$ENCODE^PRCUESIG(SIGBLOCK,USERNUM,CHECKSUM)
- +19 SET $PIECE(RECORD05,"^",1,2)="1^"_SIGBLOCK
- +20 SET ^PRCF(421.2,LEVEL0,0)=RECORD
- +21 SET ^PRCF(421.2,LEVEL0,.5)=RECORD05
- +22 SET Y=1
- QUIT
- REMOVE(LEVEL0) ;Entry point to remove e signature from record
- +1 ;NOT an extrinsic function
- +2 NEW RECORD,RECORD05
- +3 SET RECORD=$GET(^PRCF(421.2,LEVEL0,0))
- +4 SET RECORD05=$GET(^PRCF(421.2,LEVEL0,.5))
- +5 SET $PIECE(RECORD,"^",5,6)="^"
- +6 SET $PIECE(RECORD,"^",10)=""
- +7 SET $PIECE(RECORD05,"^",2)=""
- +8 SET ^PRCF(421.2,LEVEL0,0)=RECORD
- +9 SET ^PRCF(421.2,LEVEL0,.5)=RECORD05
- +10 QUIT
- VERIFY(LEVEL0) ;extrinsic function to verify version 1 signature. Returns 1 if valid, 0 if not valid
- +1 NEW RECORD05,VERSION,SIGBLOCK
- +2 ;get record variables
- +3 SET RECORD05=$GET(^PRCF(421.2,LEVEL0,.5))
- +4 SET VERSION=$PIECE(RECORD05,"^",1)
- SET SIGBLOCK=$PIECE(RECORD05,"^",2)
- +5 IF VERSION_SIGBLOCK=""
- QUIT 1
- +6 QUIT ($$DECODE(LEVEL0,TRANS)=SIGBLOCK)
- STRING(X) ;Build String of critical fields
- +1 NEW RECORD
- +2 QUIT $PIECE(X,"^",1)_"^"_$PIECE(X,"^",10)
