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yaml
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r: 197108
b: refs/heads/master
c: 69d5b49
h: refs/heads/master
v: v3
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Daniel Kenji Toyama authored and Greg Kroah-Hartman committed May 11, 2010
1 parent ed8f604 commit 0b836a1
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Showing 2 changed files with 40 additions and 40 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: c98aaf85550e314228781ba134c68bb5ca33ab6a
refs/heads/master: 69d5b4919f53900860e91a89599d2347827dc805
78 changes: 39 additions & 39 deletions trunk/drivers/staging/vt6656/rc4.c
Original file line number Diff line number Diff line change
Expand Up @@ -34,54 +34,54 @@

VOID rc4_init(PRC4Ext pRC4, PBYTE pbyKey, UINT cbKey_len)
{
UINT ust1, ust2;
UINT keyindex;
UINT stateindex;
PBYTE pbyst;
UINT idx;
UINT ust1, ust2;
UINT keyindex;
UINT stateindex;
PBYTE pbyst;
UINT idx;

pbyst = pRC4->abystate;
pRC4->ux = 0;
pRC4->uy = 0;
for (idx = 0; idx < 256; idx++)
pbyst[idx] = (BYTE)idx;
keyindex = 0;
stateindex = 0;
for (idx = 0; idx < 256; idx++) {
ust1 = pbyst[idx];
stateindex = (stateindex + pbyKey[keyindex] + ust1) & 0xff;
ust2 = pbyst[stateindex];
pbyst[stateindex] = (BYTE)ust1;
pbyst[idx] = (BYTE)ust2;
if (++keyindex >= cbKey_len)
keyindex = 0;
}
pbyst = pRC4->abystate;
pRC4->ux = 0;
pRC4->uy = 0;
for (idx = 0; idx < 256; idx++)
pbyst[idx] = (BYTE)idx;
keyindex = 0;
stateindex = 0;
for (idx = 0; idx < 256; idx++) {
ust1 = pbyst[idx];
stateindex = (stateindex + pbyKey[keyindex] + ust1) & 0xff;
ust2 = pbyst[stateindex];
pbyst[stateindex] = (BYTE)ust1;
pbyst[idx] = (BYTE)ust2;
if (++keyindex >= cbKey_len)
keyindex = 0;
}
}

UINT rc4_byte(PRC4Ext pRC4)
{
UINT ux;
UINT uy;
UINT ustx, usty;
PBYTE pbyst;
UINT ux;
UINT uy;
UINT ustx, usty;
PBYTE pbyst;

pbyst = pRC4->abystate;
ux = (pRC4->ux + 1) & 0xff;
ustx = pbyst[ux];
uy = (ustx + pRC4->uy) & 0xff;
usty = pbyst[uy];
pRC4->ux = ux;
pRC4->uy = uy;
pbyst[uy] = (BYTE)ustx;
pbyst[ux] = (BYTE)usty;
pbyst = pRC4->abystate;
ux = (pRC4->ux + 1) & 0xff;
ustx = pbyst[ux];
uy = (ustx + pRC4->uy) & 0xff;
usty = pbyst[uy];
pRC4->ux = ux;
pRC4->uy = uy;
pbyst[uy] = (BYTE)ustx;
pbyst[ux] = (BYTE)usty;

return pbyst[(ustx + usty) & 0xff];
return pbyst[(ustx + usty) & 0xff];
}

VOID rc4_encrypt(PRC4Ext pRC4, PBYTE pbyDest,
PBYTE pbySrc, UINT cbData_len)
PBYTE pbySrc, UINT cbData_len)
{
UINT ii;
for (ii = 0; ii < cbData_len; ii++)
pbyDest[ii] = (BYTE)(pbySrc[ii] ^ rc4_byte(pRC4));
UINT ii;
for (ii = 0; ii < cbData_len; ii++)
pbyDest[ii] = (BYTE)(pbySrc[ii] ^ rc4_byte(pRC4));
}

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