diff options
Diffstat (limited to 'drivers/staging/ks7010/michael_mic.c')
| -rw-r--r-- | drivers/staging/ks7010/michael_mic.c | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/drivers/staging/ks7010/michael_mic.c b/drivers/staging/ks7010/michael_mic.c index 78ae2b8fb7f3..2f535c08e172 100644 --- a/drivers/staging/ks7010/michael_mic.c +++ b/drivers/staging/ks7010/michael_mic.c @@ -14,10 +14,11 @@ #include "michael_mic.h" // Rotation functions on 32 bit values -#define ROL32( A, n ) ( ((A) << (n)) | ( ((A)>>(32-(n))) & ( (1UL << (n)) - 1 ) ) ) -#define ROR32( A, n ) ROL32( (A), 32-(n) ) +#define ROL32(A, n) (((A) << (n)) | (((A)>>(32-(n))) & ((1UL << (n)) - 1))) +#define ROR32(A, n) ROL32((A), 32-(n)) // Convert from Byte[] to UInt32 in a portable way -#define getUInt32( A, B ) (uint32_t)(A[B+0] << 0) + (A[B+1] << 8) + (A[B+2] << 16) + (A[B+3] << 24) +#define getUInt32(A, B) ((uint32_t)(A[B+0] << 0) \ + + (A[B+1] << 8) + (A[B+2] << 16) + (A[B+3] << 24)) // Convert from UInt32 to Byte[] in a portable way #define putUInt32(A, B, C) \ @@ -48,21 +49,22 @@ void MichaelInitializeFunction(struct michel_mic_t *Mic, uint8_t *key) } #define MichaelBlockFunction(L, R) \ -do{ \ - R ^= ROL32( L, 17 ); \ +do { \ + R ^= ROL32(L, 17); \ L += R; \ R ^= ((L & 0xff00ff00) >> 8) | ((L & 0x00ff00ff) << 8); \ L += R; \ - R ^= ROL32( L, 3 ); \ + R ^= ROL32(L, 3); \ L += R; \ - R ^= ROR32( L, 2 ); \ + R ^= ROR32(L, 2); \ L += R; \ -}while(0) +} while (0) static void MichaelAppend(struct michel_mic_t *Mic, uint8_t *src, int nBytes) { int addlen; + if (Mic->nBytesInM) { addlen = 4 - Mic->nBytesInM; if (addlen > nBytes) @@ -96,7 +98,8 @@ void MichaelAppend(struct michel_mic_t *Mic, uint8_t *src, int nBytes) static void MichaelGetMIC(struct michel_mic_t *Mic, uint8_t *dst) { - uint8_t *data = Mic->M; + u8 *data = Mic->M; + switch (Mic->nBytesInM) { case 0: Mic->L ^= 0x5a; @@ -122,11 +125,11 @@ void MichaelGetMIC(struct michel_mic_t *Mic, uint8_t *dst) MichaelClear(Mic); } -void MichaelMICFunction(struct michel_mic_t *Mic, uint8_t *Key, - uint8_t *Data, int Len, uint8_t priority, - uint8_t *Result) +void MichaelMICFunction(struct michel_mic_t *Mic, u8 *Key, + u8 *Data, int Len, u8 priority, + u8 *Result) { - uint8_t pad_data[4] = { priority, 0, 0, 0 }; + u8 pad_data[4] = { priority, 0, 0, 0 }; // Compute the MIC value /* * IEEE802.11i page 47 |