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Equivalent functions in sql server 2000 against functions of powerbuilder 7.

Mateen
Mateen asked
on
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Last Modified: 2008-02-01

SELECT USER_ID,PASSWORD FROM PASSWORD

USER_ID PASSWORD
A      “›‹‡
B      ³¹‡
C      §‹µ¹•¥
D      ¯‹‘…§

The values in the column password has been saved from within a front end by a function f_encrypt.

Here
“›‹‡   means DIBA      (created from f_encrypt('DIBA'))
³¹‡   means BUYA
§‹µ¹•¥ means NAWZIR
¯‹‘…§ means RADFAS

Please note that “›‹‡ is created from f_encrypt('DIBA').Similarly DIBA can be obtained by f_decrypt('“›‹‡')

The two functions are:
[function f_encrypt]
integer chrvalue, seed,mlen,i
string  mstring, mchar
chrvalue = 0
seed = 17
mchar = ''
mstring  = trim(given_string)  
mlen     = len(mstring)
FOR  I = 1 TO mlen
     chrvalue = asc(mid(mstring,I,1))
     chrvalue = ((chrvalue + seed + 95 - I)*2) - 211
     mchar = mchar + char(chrvalue)
next
return (mchar)

[function f_decrypt]
integer chrvalue,i,mlen, seed
string mstring, mchar

chrvalue = 0
seed = 17
mchar = ''
mstring = trim(given_string)  
mlen    = len(mstring)

for  I = 1 TO mlen
       chrvalue = ASC(mid(mstring,I,1))
       chrvalue = (chrvalue + 211)/2 +I -  95 - SEED
       mchar    = mchar + char(chrvalue)
next

return (mchar)

I want those two functions/procedure to be created in sql server 2000.
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