L += R; \
} while (0)
-static
-void MichaelAppend(struct michael_mic_t *Mic, uint8_t *src, int nBytes)
+static void michael_append(struct michael_mic_t *mic, uint8_t *src, int bytes)
{
int addlen;
- if (Mic->m_bytes) {
- addlen = 4 - Mic->m_bytes;
- if (addlen > nBytes)
- addlen = nBytes;
- memcpy(&Mic->m[Mic->m_bytes], src, addlen);
- Mic->m_bytes += addlen;
+ if (mic->m_bytes) {
+ addlen = 4 - mic->m_bytes;
+ if (addlen > bytes)
+ addlen = bytes;
+ memcpy(&mic->m[mic->m_bytes], src, addlen);
+ mic->m_bytes += addlen;
src += addlen;
- nBytes -= addlen;
+ bytes -= addlen;
- if (Mic->m_bytes < 4)
+ if (mic->m_bytes < 4)
return;
- Mic->l ^= getUInt32(Mic->m, 0);
- MichaelBlockFunction(Mic->l, Mic->r);
- Mic->m_bytes = 0;
+ mic->l ^= getUInt32(mic->m, 0);
+ MichaelBlockFunction(mic->l, mic->r);
+ mic->m_bytes = 0;
}
- while (nBytes >= 4) {
- Mic->l ^= getUInt32(src, 0);
- MichaelBlockFunction(Mic->l, Mic->r);
+ while (bytes >= 4) {
+ mic->l ^= getUInt32(src, 0);
+ MichaelBlockFunction(mic->l, mic->r);
src += 4;
- nBytes -= 4;
+ bytes -= 4;
}
- if (nBytes > 0) {
- Mic->m_bytes = nBytes;
- memcpy(Mic->m, src, nBytes);
+ if (bytes > 0) {
+ mic->m_bytes = bytes;
+ memcpy(mic->m, src, bytes);
}
}
* +--+--+--------+--+----+--+--+--+--+--+--+--+--+
*/
michael_init(mic, key);
- MichaelAppend(mic, (uint8_t *)data, 12); /* |DA|SA| */
- MichaelAppend(mic, pad_data, 4); /* |Priority|0|0|0| */
- MichaelAppend(mic, (uint8_t *)(data + 12), len - 12); /* |Data| */
+ michael_append(mic, (uint8_t *)data, 12); /* |DA|SA| */
+ michael_append(mic, pad_data, 4); /* |Priority|0|0|0| */
+ michael_append(mic, (uint8_t *)(data + 12), len - 12); /* |Data| */
MichaelGetMIC(mic, result);
}