Курсовая работа: Хеш-функция UMAC

.if ( al != 0) //msg not divisible by x

mov bl,s1 //so add s1

xor r1,bl

mov bl,s2

xor r2,bl

mov bl,s3

xor r3,bl

.endif

shr byte1,1 //divide message by x

mov al,s3

AND al,80h

.if al != 0 //and multiply secret with x, subtracting the polynomial when necessary to keep it's.

shl s3,1

mov al,s2

AND al,80h

.if al !=0

mov bl,s3

OR bl,1

mov s3,bl

shl s2,1

.endif

mov al,s1

AND al,80h

.if al !=0

mov bl,s2

OR bl,1

mov s2,bl

shl s1,1

.endif