Code archives/Networking/cd-key online verification
This code has been declared by its author to be Public Domain code.
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| Here is simple and secure way to check if cd-key is valid. Why it's secure? Program doesn't send CD-key anywhere. We send MD5 hash which cannot be returned back to CD-key. Even CD-key check server doesn't know users keygen. Server knows only list of valid MD5 hashes. If MD5 hash list leaks. No problem. Hashes are useless. :) Here is how it works: 1. User gives cd-key. 2. Program turns cd-key into MD5 hash 3. Program sends MD5 hash to server 4. PHP script checks if cd-key is valid 5. PHP script outputs result 6. Program read result. What do you need? Blitzmax side: cd-key PHP side: List of all cd-keys MD5 hashes You propably need keygen and MD5 generator. You can find my generator from my website at 'products' section: http://arska134.viuhka.fi/ I'll post PHP side comments below. Edit: Updated description | |||||
Strict
Local keygen:String = "6664-4027-4945-5115-5472"
Local keygenMD5hash:String = Trim(MD5(keygen))
Print "Sending MD5 Hash to server: "+keygenMD5hash
Local stream:TStream = ReadStream("http::example.com/cdkeycheck.php?hash="+keygenMD5hash)
If Not stream Then
Print "Error occurred!"
Print "- Check your internet connection."
Print "- CD-key check server maybe down. Try again later."
End
EndIf
While Not stream.Eof()
Local response:String = stream.ReadLine()
If response = keygenMD5hash Then Print "You are authorized!"
If response <> keygenMD5hash Then Print "Invalid CD-key"
Wend
stream.close()
Function MD5$(in$)
Local h0 = $67452301, h1 = $EFCDAB89, h2 = $98BADCFE, h3 = $10325476
Local r[] = [7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,..
5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20,..
4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,..
6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21]
Local k[] = [$D76AA478, $E8C7B756, $242070DB, $C1BDCEEE, $F57C0FAF, $4787C62A,..
$A8304613, $FD469501, $698098D8, $8B44F7AF, $FFFF5BB1, $895CD7BE,..
$6B901122, $FD987193, $A679438E, $49B40821, $F61E2562, $C040B340,..
$265E5A51, $E9B6C7AA, $D62F105D, $02441453, $D8A1E681, $E7D3FBC8,..
$21E1CDE6, $C33707D6, $F4D50D87, $455A14ED, $A9E3E905, $FCEFA3F8,..
$676F02D9, $8D2A4C8A, $FFFA3942, $8771F681, $6D9D6122, $FDE5380C,..
$A4BEEA44, $4BDECFA9, $F6BB4B60, $BEBFBC70, $289B7EC6, $EAA127FA,..
$D4EF3085, $04881D05, $D9D4D039, $E6DB99E5, $1FA27CF8, $C4AC5665,..
$F4292244, $432AFF97, $AB9423A7, $FC93A039, $655B59C3, $8F0CCC92,..
$FFEFF47D, $85845DD1, $6FA87E4F, $FE2CE6E0, $A3014314, $4E0811A1,..
$F7537E82, $BD3AF235, $2AD7D2BB, $EB86D391]
Local intCount = (((in$.length + 8) Shr 6) + 1) Shl 4
Local data[intCount]
For Local c=0 Until in$.length
data[c Shr 2] = data[c Shr 2] | ((in$[c] & $FF) Shl ((c & 3) Shl 3))
Next
data[in$.length Shr 2] = data[in$.length Shr 2] | ($80 Shl ((in$.length & 3) Shl 3))
data[data.length - 2] = (Long(in$.length) * 8) & $FFFFFFFF
data[data.length - 1] = (Long(in$.length) * 8) Shr 32
For Local chunkStart=0 Until intCount Step 16
Local a = h0, b = h1, c = h2, d = h3
For Local i=0 To 15
Local f = d ~ (b & (c ~ d))
Local t = d
d = c ; c = b
b = Rol((a + f + k[i] + data[chunkStart + i]), r[i]) + b
a = t
Next
For Local i=16 To 31
Local f = c ~ (d & (b ~ c))
Local t = d
d = c ; c = b
b = Rol((a + f + k[i] + data[chunkStart + (((5 * i) + 1) & 15)]), r[i]) + b
a = t
Next
For Local i=32 To 47
Local f = b ~ c ~ d
Local t = d
d = c ; c = b
b = Rol((a + f + k[i] + data[chunkStart + (((3 * i) + 5) & 15)]), r[i]) + b
a = t
Next
For Local i=48 To 63
Local f = c ~ (b | ~d)
Local t = d
d = c ; c = b
b = Rol((a + f + k[i] + data[chunkStart + ((7 * i) & 15)]), r[i]) + b
a = t
Next
h0 :+ a ; h1 :+ b
h2 :+ c ; h3 :+ d
Next
Return (LEHex(h0) + LEHex(h1) + LEHex(h2) + LEHex(h3)).ToLower()
End Function
Function SHA1$(in$)
Local h0 = $67452301, h1 = $EFCDAB89, h2 = $98BADCFE, h3 = $10325476, h4 = $C3D2E1F0
Local intCount = (((in$.length + 8) Shr 6) + 1) Shl 4
Local data[intCount]
For Local c=0 Until in$.length
data[c Shr 2] = (data[c Shr 2] Shl 8) | (in$[c] & $FF)
Next
data[in$.length Shr 2] = ((data[in$.length Shr 2] Shl 8) | $80) Shl ((3 - (in$.length & 3)) Shl 3)
data[data.length - 2] = (Long(in$.length) * 8) Shr 32
data[data.length - 1] = (Long(in$.length) * 8) & $FFFFFFFF
For Local chunkStart=0 Until intCount Step 16
Local a = h0, b = h1, c = h2, d = h3, e = h4
Local w[] = data[chunkStart..chunkStart + 16]
w = w[..80]
For Local i=16 To 79
w[i] = Rol(w[i - 3] ~ w[i - 8] ~ w[i - 14] ~ w[i - 16], 1)
Next
For Local i=0 To 19
Local t = Rol(a, 5) + (d ~ (b & (c ~ d))) + e + $5A827999 + w[i]
e = d ; d = c
c = Rol(b, 30)
b = a ; a = t
Next
For Local i=20 To 39
Local t = Rol(a, 5) + (b ~ c ~ d) + e + $6ED9EBA1 + w[i]
e = d ; d = c
c = Rol(b, 30)
b = a ; a = t
Next
For Local i=40 To 59
Local t = Rol(a, 5) + ((b & c) | (d & (b | c))) + e + $8F1BBCDC + w[i]
e = d ; d = c
c = Rol(b, 30)
b = a ; a = t
Next
For Local i=60 To 79
Local t = Rol(a, 5) + (b ~ c ~ d) + e + $CA62C1D6 + w[i]
e = d ; d = c
c = Rol(b, 30)
b = a ; a = t
Next
h0 :+ a ; h1 :+ b ; h2 :+ c
h3 :+ d ; h4 :+ e
Next
Return (Hex(h0) + Hex(h1) + Hex(h2) + Hex(h3) + Hex(h4)).ToLower()
End Function
Function SHA256$(in$)
Local h0 = $6A09E667, h1 = $BB67AE85, h2 = $3C6EF372, h3 = $A54FF53A
Local h4 = $510E527F, h5 = $9B05688C, h6 = $1F83D9AB, h7 = $5BE0CD19
Local k[] = [$428A2F98, $71374491, $B5C0FBCF, $E9B5DBA5, $3956C25B, $59F111F1,..
$923F82A4, $AB1C5ED5, $D807AA98, $12835B01, $243185BE, $550C7DC3,..
$72BE5D74, $80DEB1FE, $9BDC06A7, $C19BF174, $E49B69C1, $EFBE4786,..
$0FC19DC6, $240CA1CC, $2DE92C6F, $4A7484AA, $5CB0A9DC, $76F988DA,..
$983E5152, $A831C66D, $B00327C8, $BF597FC7, $C6E00BF3, $D5A79147,..
$06CA6351, $14292967, $27B70A85, $2E1B2138, $4D2C6DFC, $53380D13,..
$650A7354, $766A0ABB, $81C2C92E, $92722C85, $A2BFE8A1, $A81A664B,..
$C24B8B70, $C76C51A3, $D192E819, $D6990624, $F40E3585, $106AA070,..
$19A4C116, $1E376C08, $2748774C, $34B0BCB5, $391C0CB3, $4ED8AA4A,..
$5B9CCA4F, $682E6FF3, $748F82EE, $78A5636F, $84C87814, $8CC70208,..
$90BEFFFA, $A4506CEB, $BEF9A3F7, $C67178F2]
Local intCount = (((in$.length + 8) Shr 6) + 1) Shl 4
Local data[intCount]
For Local c=0 Until in$.length
data[c Shr 2] = (data[c Shr 2] Shl 8) | (in$[c] & $FF)
Next
data[in$.length Shr 2] = ((data[in$.length Shr 2] Shl 8) | $80) Shl ((3 - (in$.length & 3)) Shl 3)
data[data.length - 2] = (Long(in$.length) * 8) Shr 32
data[data.length - 1] = (Long(in$.length) * 8) & $FFFFFFFF
For Local chunkStart=0 Until intCount Step 16
Local a = h0, b = h1, c = h2, d = h3, e = h4, f = h5, g = h6, h = h7
Local w[] = data[chunkStart..chunkStart + 16]
w = w[..64]
For Local i=16 To 63
w[i] = w[i - 16] + (Ror(w[i - 15], 7) ~ Ror(w[i - 15], 18) ~ (w[i - 15] Shr 3))..
+ w[i - 7] + (Ror(w[i - 2], 17) ~ Ror(w[i - 2], 19) ~ (w[i - 2] Shr 10))
Next
For Local i=0 To 63
Local t0 = (Ror(a, 2) ~ Ror(a, 13) ~ Ror(a, 22)) + ((a & b) | (b & c) | (c & a))
Local t1 = h + (Ror(e, 6) ~ Ror(e, 11) ~ Ror(e, 25)) + ((e & f) | (~e & g)) + k[i] + w[i]
h = g ; g = f ; f = e ; e = d + t1
d = c ; c = b ; b = a ; a = t0 + t1
Next
h0 :+ a ; h1 :+ b ; h2 :+ c ; h3 :+ d
h4 :+ e ; h5 :+ f ; h6 :+ g ; h7 :+ h
Next
Return (Hex(h0) + Hex(h1) + Hex(h2) + Hex(h3) + Hex(h4) + Hex(h5) + Hex(h6) + Hex(h7)).ToLower()
End Function
Function Rol(val, shift)
Return (val Shl shift) | (val Shr (32 - shift))
End Function
Function Ror(val, shift)
Return (val Shr shift) | (val Shl (32 - shift))
End Function
Function LEHex$(val)
Local out$ = Hex(val)
Return out$[6..8] + out$[4..6] + out$[2..4] + out$[0..2]
End Function |
Comments
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PHP side:<?php
$clientMD5Hash = trim($_GET['hash']);
$fh = fopen("data/MD5.txt", "r");
while(!feof($fh)) {
$lines = trim(fgets($fh));
if ($lines == $clientMD5Hash) {
echo $lines;
break;
} else {
// echo $clientMD5Hash." is invalid MD5 hash";
}
}
fclose($fh);
?>So this script should return MD5 hash to program if it's valid. |
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