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Routine: RORUTL03

RORUTL03.m

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  1. RORUTL03 ;HOIFO/CRT,SG - ENCRYPTION/DECRYPTION ; 7/14/05 2:59pm
  1. ;;1.5;CLINICAL CASE REGISTRIES;;Feb 17, 2006
  1. ;
  1. Q
  1. ;
  1. ;***** DECRYPTS THE STRING
  1. DECRYPT(S) ;
  1. N ASSOCIX,ASSOCSTR,IDIX,IDSTR
  1. S ASSOCIX=$A($E(S,$L(S)))-31,IDIX=$A($E(S))-31
  1. S ASSOCSTR=$P($T(Z+ASSOCIX),";;",2,99)
  1. S IDSTR=$P($T(Z+IDIX),";;",2,99)
  1. Q $TR($E(S,2,$L(S)-1),ASSOCSTR,IDSTR)
  1. ;
  1. ;***** ENCRYPTS THE STRING
  1. ENCRYPT(S) ;
  1. N %,ASSOCIX,ASSOCSTR,IDIX,IDSTR
  1. S ASSOCIX=$R(20)+1
  1. F S IDIX=$R(20)+1 Q:ASSOCIX'=IDIX
  1. S ASSOCSTR=$P($T(Z+ASSOCIX),";;",2,99)
  1. S IDSTR=$P($T(Z+IDIX),";;",2,99)
  1. Q $C(IDIX+31)_$TR(S,IDSTR,ASSOCSTR)_$C(ASSOCIX+31)
  1. ;
  1. ;***** RETURNS DEFAULT SITE FOR HL7 MESSAGES
  1. SITE(CS) ;
  1. N RORSITE,RORSTN S:$G(CS)="" CS="^"
  1. S RORSITE=$$SITE^VASITE
  1. I RORSITE<0 D Q ""
  1. . D ERROR^RORERR(-56,,,,RORSITE,"$$SITE^VASITE")
  1. S RORSTN=$E($P(RORSITE,"^",3),1,3)
  1. Q RORSTN_CS_$P(RORSITE,"^",2)_CS_"99VA4"
  1. ;
  1. ;***** XOR ENCRYPTION (from ICR v2.1)
  1. XOR(X) ;
  1. N I,SUFFIX
  1. ;--- Separate digits and letters (the suffix)
  1. I X'?1N.N D S SUFFIX=$E(X,I,99),X=$E(X,1,I-1)
  1. . F I=1:1 Q:$E(X,I)'?1N
  1. ;--- Convert the numeric part to hexadecimal
  1. S X=$$CNV^XLFUTL(X,16)
  1. ;--- Perform XOR of each hexadecimal digit with '1101' (0xD)
  1. S X=$TR(X,"0123456789ABCDEF","DCFE98BA54761032")
  1. ;--- Pad with 0xD from the left so that the value will contain
  1. ; no less that 9 hexadecimal digits, convert numeric part
  1. ;--- back to decimal and append the suffix (if available)
  1. Q $$DEC^XLFUTL($TR($J(X,9)," ","D"),16)_$G(SUFFIX)
  1. ;
  1. ;***** ENCODES THE SPECIAL CHARACTERS (&, <, ', and ")
  1. ;
  1. ; STR Source string
  1. ;
  1. XMLENC(STR) ;
  1. N CH,I,IC
  1. F I=1:1:5 S CH=$E("&<""'>",I),IC=1 D
  1. . F S IC=$F(STR,CH,IC) Q:IC'>0 D
  1. . . S $E(STR,IC-1,IC-1)=$P("&^<^"^'^>","^",I)
  1. Q STR
  1. ;
  1. ;***** ENCRYPTION/DECRYPTION TABLE
  1. Z ;;
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