_doProcessBlock: function()

in digital-shadow/demo-car/js/aws-iot/aws-iot.js [5595:5744]
77 lines of code
13 McCabe index (conditional complexity)

	        _doProcessBlock: function (M, offset) {

	            for (var i = 0; i < 16; i++) {
	                var offset_i = offset + i;
	                var M_offset_i = M[offset_i];

	                M[offset_i] = (
	                    (((M_offset_i << 8)  | (M_offset_i >>> 24)) & 0x00ff00ff) |
	                    (((M_offset_i << 24) | (M_offset_i >>> 8))  & 0xff00ff00)
	                );
	            }
	            var H  = this._hash.words;
	            var hl = _hl.words;
	            var hr = _hr.words;
	            var zl = _zl.words;
	            var zr = _zr.words;
	            var sl = _sl.words;
	            var sr = _sr.words;

	            var al, bl, cl, dl, el;
	            var ar, br, cr, dr, er;

	            ar = al = H[0];
	            br = bl = H[1];
	            cr = cl = H[2];
	            dr = dl = H[3];
	            er = el = H[4];
	            var t;
	            for (var i = 0; i < 80; i += 1) {
	                t = (al +  M[offset+zl[i]])|0;
	                if (i<16){
		            t +=  f1(bl,cl,dl) + hl[0];
	                } else if (i<32) {
		            t +=  f2(bl,cl,dl) + hl[1];
	                } else if (i<48) {
		            t +=  f3(bl,cl,dl) + hl[2];
	                } else if (i<64) {
		            t +=  f4(bl,cl,dl) + hl[3];
	                } else {// if (i<80) {
		            t +=  f5(bl,cl,dl) + hl[4];
	                }
	                t = t|0;
	                t =  rotl(t,sl[i]);
	                t = (t+el)|0;
	                al = el;
	                el = dl;
	                dl = rotl(cl, 10);
	                cl = bl;
	                bl = t;

	                t = (ar + M[offset+zr[i]])|0;
	                if (i<16){
		            t +=  f5(br,cr,dr) + hr[0];
	                } else if (i<32) {
		            t +=  f4(br,cr,dr) + hr[1];
	                } else if (i<48) {
		            t +=  f3(br,cr,dr) + hr[2];
	                } else if (i<64) {
		            t +=  f2(br,cr,dr) + hr[3];
	                } else {// if (i<80) {
		            t +=  f1(br,cr,dr) + hr[4];
	                }
	                t = t|0;
	                t =  rotl(t,sr[i]) ;
	                t = (t+er)|0;
	                ar = er;
	                er = dr;
	                dr = rotl(cr, 10);
	                cr = br;
	                br = t;
	            }
	            t    = (H[1] + cl + dr)|0;
	            H[1] = (H[2] + dl + er)|0;
	            H[2] = (H[3] + el + ar)|0;
	            H[3] = (H[4] + al + br)|0;
	            H[4] = (H[0] + bl + cr)|0;
	            H[0] =  t;
	        },

	        _doFinalize: function () {
	            var data = this._data;
	            var dataWords = data.words;

	            var nBitsTotal = this._nDataBytes * 8;
	            var nBitsLeft = data.sigBytes * 8;

	            dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
	            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = (
	                (((nBitsTotal << 8)  | (nBitsTotal >>> 24)) & 0x00ff00ff) |
	                (((nBitsTotal << 24) | (nBitsTotal >>> 8))  & 0xff00ff00)
	            );
	            data.sigBytes = (dataWords.length + 1) * 4;

	            this._process();

	            var hash = this._hash;
	            var H = hash.words;

	            for (var i = 0; i < 5; i++) {
	                var H_i = H[i];

	                H[i] = (((H_i << 8)  | (H_i >>> 24)) & 0x00ff00ff) |
	                       (((H_i << 24) | (H_i >>> 8))  & 0xff00ff00);
	            }

	            return hash;
	        },

	        clone: function () {
	            var clone = Hasher.clone.call(this);
	            clone._hash = this._hash.clone();

	            return clone;
	        }
	    });


	    function f1(x, y, z) {
	        return ((x) ^ (y) ^ (z));

	    }

	    function f2(x, y, z) {
	        return (((x)&(y)) | ((~x)&(z)));
	    }

	    function f3(x, y, z) {
	        return (((x) | (~(y))) ^ (z));
	    }

	    function f4(x, y, z) {
	        return (((x) & (z)) | ((y)&(~(z))));
	    }

	    function f5(x, y, z) {
	        return ((x) ^ ((y) |(~(z))));

	    }

	    function rotl(x,n) {
	        return (x<<n) | (x>>>(32-n));
	    }



	    C.RIPEMD160 = Hasher._createHelper(RIPEMD160);


	    C.HmacRIPEMD160 = Hasher._createHmacHelper(RIPEMD160);
	}(Math));