diff options
Diffstat (limited to 'drivers/staging/vt6655/rc4.c')
-rw-r--r-- | drivers/staging/vt6655/rc4.c | 78 |
1 files changed, 39 insertions, 39 deletions
diff --git a/drivers/staging/vt6655/rc4.c b/drivers/staging/vt6655/rc4.c index 9856c08..343b815 100644 --- a/drivers/staging/vt6655/rc4.c +++ b/drivers/staging/vt6655/rc4.c @@ -34,54 +34,54 @@ void rc4_init(PRC4Ext pRC4, unsigned char *pbyKey, unsigned int cbKey_len) { - unsigned int ust1, ust2; - unsigned int keyindex; - unsigned int stateindex; - unsigned char *pbyst; - unsigned int idx; + unsigned int ust1, ust2; + unsigned int keyindex; + unsigned int stateindex; + unsigned char *pbyst; + unsigned int idx; - pbyst = pRC4->abystate; - pRC4->ux = 0; - pRC4->uy = 0; - for (idx = 0; idx < 256; idx++) - pbyst[idx] = (unsigned char)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] = (unsigned char)ust1; - pbyst[idx] = (unsigned char)ust2; - if (++keyindex >= cbKey_len) - keyindex = 0; - } + pbyst = pRC4->abystate; + pRC4->ux = 0; + pRC4->uy = 0; + for (idx = 0; idx < 256; idx++) + pbyst[idx] = (unsigned char)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] = (unsigned char)ust1; + pbyst[idx] = (unsigned char)ust2; + if (++keyindex >= cbKey_len) + keyindex = 0; + } } unsigned int rc4_byte(PRC4Ext pRC4) { - unsigned int ux; - unsigned int uy; - unsigned int ustx, usty; - unsigned char *pbyst; + unsigned int ux; + unsigned int uy; + unsigned int ustx, usty; + unsigned char *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] = (unsigned char)ustx; - pbyst[ux] = (unsigned char)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] = (unsigned char)ustx; + pbyst[ux] = (unsigned char)usty; - return pbyst[(ustx + usty) & 0xff]; + return pbyst[(ustx + usty) & 0xff]; } void rc4_encrypt(PRC4Ext pRC4, unsigned char *pbyDest, - unsigned char *pbySrc, unsigned int cbData_len) + unsigned char *pbySrc, unsigned int cbData_len) { - unsigned int ii; - for (ii = 0; ii < cbData_len; ii++) - pbyDest[ii] = (unsigned char)(pbySrc[ii] ^ rc4_byte(pRC4)); + unsigned int ii; + for (ii = 0; ii < cbData_len; ii++) + pbyDest[ii] = (unsigned char)(pbySrc[ii] ^ rc4_byte(pRC4)); } |