Method digest

pager_lib/smb/utils/md4.py:175–219

(self)

    #-----------------------------------------------------
    def digest(self):

        res = [0x00] * 16
        s = [0x00] * 8
        padding = [0x00] * 64
        padding[0] = 0x80
        padlen, oldlen1, oldlen2 = U32(0), U32(0), U32(0)

        temp = self.make_copy()

        oldlen1 = temp.len1
        oldlen2 = temp.len2
        if (56 <= int(self.count)): padlen = U32(56 - int(self.count) + 64)
        else: padlen = U32(56 - int(self.count))

        temp.update(bytes(padding[:int(padlen)]))

        s[0]= (oldlen1)        & U32(0xFF)
        s[1]=((oldlen1) >>  8) & U32(0xFF)
        s[2]=((oldlen1) >> 16) & U32(0xFF)
        s[3]=((oldlen1) >> 24) & U32(0xFF)
        s[4]= (oldlen2)        & U32(0xFF)
        s[5]=((oldlen2) >>  8) & U32(0xFF)
        s[6]=((oldlen2) >> 16) & U32(0xFF)
        s[7]=((oldlen2) >> 24) & U32(0xFF)
        temp.update(bytes(s))

        res[ 0]= temp.A        & U32(0xFF)
        res[ 1]=(temp.A >>  8) & U32(0xFF)
        res[ 2]=(temp.A >> 16) & U32(0xFF)
        res[ 3]=(temp.A >> 24) & U32(0xFF)
        res[ 4]= temp.B        & U32(0xFF)
        res[ 5]=(temp.B >>  8) & U32(0xFF)
        res[ 6]=(temp.B >> 16) & U32(0xFF)
        res[ 7]=(temp.B >> 24) & U32(0xFF)
        res[ 8]= temp.C        & U32(0xFF)
        res[ 9]=(temp.C >>  8) & U32(0xFF)
        res[10]=(temp.C >> 16) & U32(0xFF)
        res[11]=(temp.C >> 24) & U32(0xFF)
        res[12]= temp.D        & U32(0xFF)
        res[13]=(temp.D >>  8) & U32(0xFF)
        res[14]=(temp.D >> 16) & U32(0xFF)
        res[15]=(temp.D >> 24) & U32(0xFF)

        return bytes(res)

#====================================================================
# helpers