NBLW=B_0x00
HASH start register
| NBLW | Number of valid bits in the last word 0 (B_0x00): All the 32 bits of the last data written are valid message bits, that is M[31:0] 1 (B_0x01): Only one bit of the last data written (after swapping) is valid, that is M[0] 2 (B_0x02): Only two bits of the last data written (after swapping) are valid, that is M[1:0] 3 (B_0x03): Only three bits of the last data written (after swapping) are valid that is M[2:0] 31 (B_0x1F): Only 31 bits of the last data written (after swapping) are valid that is M[30:0] |
| DCAL | Digest calculation |