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Last change
on this file since 794 was 628, checked in by George Lilly, 15 years ago |
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initial load of FOIAVistA 6/30/08 version
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File size:
969 bytes
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| 1 | VAQHSH1 ;ALB/JRP - ENCRYPT/DECRYPT ROUTINES;29-MAR-93
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| 2 | ;;1.5;PATIENT DATA EXCHANGE;;NOV 17, 1993
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| 3 | KRNLHASH(STRING,KEY1,KEY2,DCRYPT) ;ENCRYPT/DECRYPT USING KERNEL HASHING
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| 4 | ;INPUT : STRING - String to encrypt/decrypt
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| 5 | ; KEY1 - Primary key for encryption/decryption (numeric)
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| 6 | ; (defaults to the current value in DUZ)
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| 7 | ; KEY2 - Secondary key for encryption/decryption (numeric)
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| 8 | ; (defaults to 0)
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| 9 | ; DCRYPT - Flag indicating whether to encrypt or decrypt
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| 10 | ; If 0, encrypt STRING (default)
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| 11 | ; If 1, decrypt STRING
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| 12 | ;OUTPUT : S - STRING encrypted/decrypted using KERNEL hashing
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| 13 | ; Null - Encryption/decryption not possible
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| 14 | ;
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| 15 | ;CHECK INPUT
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| 16 | Q:('$D(STRING)) ""
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| 17 | S:('$D(KEY1)) KEY1=+$G(DUZ)
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| 18 | S:(KEY1'?1.N) KEY1=+$G(DUZ)
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| 19 | S KEY2=+$G(KEY2)
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| 20 | S DCRYPT=+$G(DCRYPT)
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| 21 | ;DECLARE VARIABLES
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| 22 | N X,X1,X2
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| 23 | S X=STRING
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| 24 | S X1=KEY1
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| 25 | S X2=KEY2
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| 26 | ;ENCRYPT
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| 27 | I ('DCRYPT) D EN^XUSHSHP Q X
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| 28 | ;DECRYPT
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| 29 | D DE^XUSHSHP
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| 30 | Q X
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