I hope this is the correct code
It's been a while since I've made any changes to it.
- Code: Select all Expand view
#include "Fivewin.ch"
/* KeyGen
Developed by Jeff Barnes (jeff@can-soft.net)
Last Revised: March 18 2004
MakeKey(nKey, nLicense) //Returns cKey
nKey = any numeric value
nLicense = Number of licenses to be allowed
MakeKey() //Returns cKey
This will ask for nKey, nSerial and nLicense
VerifyKey(nKey, nLicense, cKey) //Retruns logical .t. or .f.
nKey = numeric value -must be same number as used in MakeKey()
nLicense = numeric value -must be same number as used in MakeKey()
cKey = The Key to be verified -generated from MakeKey()
GetLicense(nKey, cStored) //Returns nLicense
nKey = numeric value -must be same number as used in MakeKey()
cStored = the key returned by MakeKey()
GetSecretKey( nSerial, cKey ) //Returns Secret Key
nSerial = serial number of hard drive ( nSerialHD )
cKey = The ket returned by MakeKey()
*/
Static cStored, cKey, nSerial, oKeyGen
Function MakeKey(nKey,nLicense,lGetSecretKey, nSerial2)
Local nTotal1:=0, nTotal2:=1,nTotal3:=0
Local cDigit, i, lVisable:=.f.
Local cHash1:=0, cHash2:=0, cHash3:=0, cHash4:=0
Local cKey:=""
Local nCount:=0
Local nSerial:=nSerialHD(), oClp
IF Empty(lGetSecretKey)
lGetSecretKey := .f.
ELSE
nSerial := nSerial2
ENDIF
if Empty(nLicense)
nLicense:=1
endif
if Empty(nKey)
lVisable:=.t.
nKey:=1
nSerial:=0
MsgGet("Key Generator","Enter Key: ",@nKey)
MsgGet("Key Generator","Enter Serial Number: ",@nSerial)
MsgGet("Key Generator","Number of Licenses: ",@nLicense)
endif
nCount:=len(alltrim(str(nSerial)))
For i = 1 to nCount+1
cDigit := SubStr( alltrim(str(nSerial)) ,i,1)
nTotal1:=nTotal1+val(cDigit)
if val(cDigit)<>0
nTotal2:=nTotal2*val(cDigit)
endif
nTotal3:=nTotal3+(val(cDigit)*nCount)
Next
cHash1:=alltrim(str(nTotal1*nCount+nKey))
cHash2:=alltrim(str(nTotal2*nCount+nKey))
cHash3:=alltrim(str(nTotal3*nCount-nKey))
cHash4:=alltrim(str(nLicense*nCount*nKey))
cKey:= cHash1+"-"+cHash2+"-"+cHash3+"-"+cHash4
IF lVisable
MsgInfo("Serial Number: "+str(nSerial)+CRLF+"Key: "+cKey,"Key Generator")
Define Window oKeyGen FROM 0,0 to 0,0
Define CLIPBOARD oClp of oKeyGen
Activate CLIPBOARD oClp
oClp:SetText("Serial Number: "+str(nSerial)+CRLF+"Key: "+cKey+CRLF+"Licenses: "+str(nLicense))
MsgInfo("The KEY has been copied to the clipboard")
Activate Window oKeyGen on init oKeyGen:End()
Endif
Return cKey
Function VerifyKey(nKey,cStored)
If Empty(nKey) .or. Empty(cStored)
MsgInfo("A value is missing for VerifyKey()","KeyGen Error")
Return .f.
endif
If MakeKey(nKey,GetLicense(nKey,cStored)) = cStored
Return .t.
else
Return .f.
endif
return nil
Function GetLicense(nKey,cStored)
Local nLicense, i, j:=0, cHash4:="", nCount
If Empty(nKey) .or. Empty(cStored)
MsgInfo("A value is missing for GetLicense()","KeyGen Error")
Return Nil
endif
nCount:=Len(alltrim(cStored))
for i = 1 to nCount
if substr(cStored,i,1)="-"
j=j+1
endif
if j=3
if substr(cStored,i,1)<>"-"
cHash4:=cHash4+substr(cStored,i,1)
endif
endif
next
nLicense:=val(cHash4)/nkey/ ( len( alltrim( STR( nSerialHD() ))))
return nLicense
Function GetSecretKey( nSerial, cKey )
Local cSecret
if empty(nSerial)
MsgInfo("You MUST supply a Hard Drive Serial Number","ERROR")
Quit
ENDIF
if empty(cKey)
MsgInfo("You MUST supply a Key [ made by MakeKey() ]","ERROR")
Quit
ENDIF
DEFINE WINDOW oKeyGen FROM 0,0 to 5,35 TITLE "Key Generator"
ACTIVATE WINDOW oKeyGen on INIT cSecret:=DoSecret( nSerial, cKey )
Return cSecret
Function DoSecret( nSerial, cKey )
Local nSecret := 0, lSearching := .t., nCount, i:=0, j
Local cGetKey, cTempKey:="", cTemp:=""
Local cHash1:="", cHash2:="", cHash3:="", cHash4:=""
Local cGetHash1:="", cGetHash2:="", cGetHash3:="", cGetHash4:=""
Local oSay
IF ! MsgYesNo("This may take a LONG TIME to run, Continue?","Find Secret Key")
Quit
ENDIF
FOR j = 1 to len(trim(cKey))
i++
cTemp := SUBSTR( cKey, i, 1 )
cTempKey = cTempKey + cTemp
IF cTemp = "-"
if EMPTY( cHash1 )
cHash1:=Left( cTempKey,len( trim( cTempKey ))-1 )
cTempKey:=""
loop
endif
if EMPTY( cHash2 )
cHash2:=Left( cTempKey,len( trim( cTempKey ))-1 )
cTempKey:=""
loop
endif
if EMPTY( cHash3 )
cHash3:=Left( cTempKey,len( trim( cTempKey ))-1 )
cTempKey:=""
loop
endif
ENDIF
NEXT
lSearching := .t.
DO WHILE lSearching
i++
@ 1,1 SAY "Working..."+STR(i) of oKeyGen COLOR "R+/W"
SysWait()
cGetKey := MakeKey( i, 5, .t., nSerial )
cGetHash1:=left(cGetKey,len(cHash1))
cGetHash2:=substr(cGetKey,len(alltrim(cHash1))+2,len(alltrim(cHash2)))
cGetHash3:=substr(cGetKey,len(alltrim(cHash1))+len(alltrim(cHash2))+3,len(alltrim(cHash3)))
if cHash1=cGetHash1 .and. cHash2=cGetHash2 .and. cHash3=cGetHash3
@ 1,1 SAY "Done....................." of oKeyGen COLOR "R/w"
SysWait()
MsgInfo("You Secret Key is: "+STR(i),"Secret Key Finder")
oKeyGen:End()
lSearching := .f.
endif
ENDDO
Return i
