blocks method
Implementation
poly1305 blocks(Uint8List m, int mpos, int bytes) {
int hibit = _fin != 0 ? 0 : (1 << 11);
Int32 t0, t1, t2, t3, t4, t5, t6, t7, c;
Int32 d0, d1, d2, d3, d4, d5, d6, d7, d8, d9;
Int32 h0 = _h[0],
h1 = _h[1],
h2 = _h[2],
h3 = _h[3],
h4 = _h[4],
h5 = _h[5],
h6 = _h[6],
h7 = _h[7],
h8 = _h[8],
h9 = _h[9];
int r0 = _r[0].toInt(),
r1 = _r[1].toInt(),
r2 = _r[2].toInt(),
r3 = _r[3].toInt(),
r4 = _r[4].toInt(),
r5 = _r[5].toInt(),
r6 = _r[6].toInt(),
r7 = _r[7].toInt(),
r8 = _r[8].toInt(),
r9 = _r[9].toInt();
while (bytes >= 16) {
t0 = Int32(m[mpos+ 0] & 0xff | (m[mpos+ 1] & 0xff) << 8); h0 = Int32(h0.toInt() + (t0.toInt() & 0x1fff));
t1 = Int32(m[mpos+ 2] & 0xff | (m[mpos+ 3] & 0xff) << 8); h1 = Int32(h1.toInt() + (((t0.shiftRightUnsigned(13)) | (t1 << 3)).toInt() & 0x1fff));
t2 = Int32(m[mpos+ 4] & 0xff | (m[mpos+ 5] & 0xff) << 8); h2 = Int32(h2.toInt() + (((t1.shiftRightUnsigned(10)) | (t2 << 6)).toInt() & 0x1fff));
t3 = Int32(m[mpos+ 6] & 0xff | (m[mpos+ 7] & 0xff) << 8); h3 = Int32(h3.toInt() + (((t2.shiftRightUnsigned( 7)) | (t3 << 9)).toInt() & 0x1fff));
t4 = Int32(m[mpos+ 8] & 0xff | (m[mpos+ 9] & 0xff) << 8); h4 = Int32(h4.toInt() + (((t3.shiftRightUnsigned( 4)) | (t4 << 12)).toInt() & 0x1fff));
h5 = Int32(h5.toInt() + (((t4.shiftRightUnsigned( 1))).toInt() & 0x1fff));
t5 = Int32(m[mpos+10] & 0xff | (m[mpos+11] & 0xff) << 8); h6 = Int32(h6.toInt() + (((t4.shiftRightUnsigned(14)) | (t5 << 2)).toInt() & 0x1fff));
t6 = Int32(m[mpos+12] & 0xff | (m[mpos+13] & 0xff) << 8); h7 = Int32(h7.toInt() + (((t5.shiftRightUnsigned(11)) | (t6 << 5)).toInt() & 0x1fff));
t7 = Int32(m[mpos+14] & 0xff | (m[mpos+15] & 0xff) << 8); h8 = Int32(h8.toInt() + (((t6.shiftRightUnsigned( 8)) | (t7 << 8)).toInt() & 0x1fff));
h9 = Int32(h9.toInt() + (((t7.shiftRightUnsigned(5))).toInt() | hibit));
c = Int32(0);
d0 = c;
d0 = Int32(d0.toInt() + h0.toInt() * r0);
d0 = Int32(d0.toInt() + h1.toInt() * (5 * r9));
d0 = Int32(d0.toInt() + h2.toInt() * (5 * r8));
d0 = Int32(d0.toInt() + h3.toInt() * (5 * r7));
d0 = Int32(d0.toInt() + h4.toInt() * (5 * r6));
c = (d0.shiftRightUnsigned(13)); d0 &= 0x1fff;
d0 = Int32(d0.toInt() + h5.toInt() * (5 * r5));
d0 = Int32(d0.toInt() + h6.toInt() * (5 * r4));
d0 = Int32(d0.toInt() + h7.toInt() * (5 * r3));
d0 = Int32(d0.toInt() + h8.toInt() * (5 * r2));
d0 = Int32(d0.toInt() + h9.toInt() * (5 * r1));
c = Int32(c.toInt() + d0.shiftRightUnsigned(13).toInt()); d0 &= 0x1fff;
d1 = c;
d1 = Int32(d1.toInt() + h0.toInt() * r1);
d1 = Int32(d1.toInt() + h1.toInt() * r0);
d1 = Int32(d1.toInt() + h2.toInt() * (5 * r9));
d1 = Int32(d1.toInt() + h3.toInt() * (5 * r8));
d1 = Int32(d1.toInt() + h4.toInt() * (5 * r7));
c = (d1.shiftRightUnsigned(13)); d1 &= 0x1fff;
d1 = Int32(d1.toInt() + h5.toInt() * (5 * r6));
d1 = Int32(d1.toInt() + h6.toInt() * (5 * r5));
d1 = Int32(d1.toInt() + h7.toInt() * (5 * r4));
d1 = Int32(d1.toInt() + h8.toInt() * (5 * r3));
d1 = Int32(d1.toInt() + h9.toInt() * (5 * r2));
c = Int32(c.toInt() + (d1.shiftRightUnsigned(13)).toInt()); d1 &= 0x1fff;
d2 = c;
d2 = Int32(d2.toInt() + h0.toInt() * r2);
d2 = Int32(d2.toInt() + h1.toInt() * r1);
d2 = Int32(d2.toInt() + h2.toInt() * r0);
d2 = Int32(d2.toInt() + h3.toInt() * (5 * r9));
d2 = Int32(d2.toInt() + h4.toInt() * (5 * r8));
c = (d2.shiftRightUnsigned(13)); d2 &= 0x1fff;
d2 = Int32(d2.toInt() + h5.toInt() * (5 * r7));
d2 = Int32(d2.toInt() + h6.toInt() * (5 * r6));
d2 = Int32(d2.toInt() + h7.toInt() * (5 * r5));
d2 = Int32(d2.toInt() + h8.toInt() * (5 * r4));
d2 = Int32(d2.toInt() + h9.toInt() * (5 * r3));
c = Int32(c.toInt() + (d2.shiftRightUnsigned(13)).toInt()); d2 &= 0x1fff;
d3 = c;
d3 = Int32(d3.toInt() + h0.toInt() * r3);
d3 = Int32(d3.toInt() + h1.toInt() * r2);
d3 = Int32(d3.toInt() + h2.toInt() * r1);
d3 = Int32(d3.toInt() + h3.toInt() * r0);
d3 = Int32(d3.toInt() + h4.toInt() * (5 * r9));
c = (d3.shiftRightUnsigned(13)); d3 &= 0x1fff;
d3 = Int32(d3.toInt() + h5.toInt() * (5 * r8));
d3 = Int32(d3.toInt() + h6.toInt() * (5 * r7));
d3 = Int32(d3.toInt() + h7.toInt() * (5 * r6));
d3 = Int32(d3.toInt() + h8.toInt() * (5 * r5));
d3 = Int32(d3.toInt() + h9.toInt() * (5 * r4));
c = Int32(c.toInt() + (d3.shiftRightUnsigned(13)).toInt()); d3 &= 0x1fff;
d4 = c;
d4 = Int32(d4.toInt() + h0.toInt() * r4);
d4 = Int32(d4.toInt() + h1.toInt() * r3);
d4 = Int32(d4.toInt() + h2.toInt() * r2);
d4 = Int32(d4.toInt() + h3.toInt() * r1);
d4 = Int32(d4.toInt() + h4.toInt() * r0);
c = (d4.shiftRightUnsigned(13)); d4 &= 0x1fff;
d4 = Int32(d4.toInt() + h5.toInt() * (5 * r9));
d4 = Int32(d4.toInt() + h6.toInt() * (5 * r8));
d4 = Int32(d4.toInt() + h7.toInt() * (5 * r7));
d4 = Int32(d4.toInt() + h8.toInt() * (5 * r6));
d4 = Int32(d4.toInt() + h9.toInt() * (5 * r5));
c = Int32(c.toInt() + (d4.shiftRightUnsigned(13)).toInt()); d4 &= 0x1fff;
d5 = c;
d5 = Int32(d5.toInt() + h0.toInt() * r5);
d5 = Int32(d5.toInt() + h1.toInt() * r4);
d5 = Int32(d5.toInt() + h2.toInt() * r3);
d5 = Int32(d5.toInt() + h3.toInt() * r2);
d5 = Int32(d5.toInt() + h4.toInt() * r1);
c = (d5.shiftRightUnsigned(13)); d5 &= 0x1fff;
d5 = Int32(d5.toInt() + h5.toInt() * r0);
d5 = Int32(d5.toInt() + h6.toInt() * (5 * r9));
d5 = Int32(d5.toInt() + h7.toInt() * (5 * r8));
d5 = Int32(d5.toInt() + h8.toInt() * (5 * r7));
d5 = Int32(d5.toInt() + h9.toInt() * (5 * r6));
c = Int32(c.toInt() + (d5.shiftRightUnsigned(13)).toInt()); d5 &= 0x1fff;
d6 = c;
d6 = Int32(d6.toInt() + h0.toInt() * r6);
d6 = Int32(d6.toInt() + h1.toInt() * r5);
d6 = Int32(d6.toInt() + h2.toInt() * r4);
d6 = Int32(d6.toInt() + h3.toInt() * r3);
d6 = Int32(d6.toInt() + h4.toInt() * r2);
c = (d6.shiftRightUnsigned(13)); d6 &= 0x1fff;
d6 = Int32(d6.toInt() + h5.toInt() * r1);
d6 = Int32(d6.toInt() + h6.toInt() * r0);
d6 = Int32(d6.toInt() + h7.toInt() * (5 * r9));
d6 = Int32(d6.toInt() + h8.toInt() * (5 * r8));
d6 = Int32(d6.toInt() + h9.toInt() * (5 * r7));
c = Int32(c.toInt() + (d6.shiftRightUnsigned(13)).toInt()); d6 &= 0x1fff;
d7 = c;
d7 = Int32(d7.toInt() + h0.toInt() * r7);
d7 = Int32(d7.toInt() + h1.toInt() * r6);
d7 = Int32(d7.toInt() + h2.toInt() * r5);
d7 = Int32(d7.toInt() + h3.toInt() * r4);
d7 = Int32(d7.toInt() + h4.toInt() * r3);
c = (d7.shiftRightUnsigned(13)); d7 &= 0x1fff;
d7 = Int32(d7.toInt() + h5.toInt() * r2);
d7 = Int32(d7.toInt() + h6.toInt() * r1);
d7 = Int32(d7.toInt() + h7.toInt() * r0);
d7 = Int32(d7.toInt() + h8.toInt() * (5 * r9));
d7 = Int32(d7.toInt() + h9.toInt() * (5 * r8));
c = Int32(c.toInt() + (d7.shiftRightUnsigned(13)).toInt()); d7 &= 0x1fff;
d8 = c;
d8 = Int32(d8.toInt() + h0.toInt() * r8);
d8 = Int32(d8.toInt() + h1.toInt() * r7);
d8 = Int32(d8.toInt() + h2.toInt() * r6);
d8 = Int32(d8.toInt() + h3.toInt() * r5);
d8 = Int32(d8.toInt() + h4.toInt() * r4);
c = (d8.shiftRightUnsigned(13)); d8 &= 0x1fff;
d8 = Int32(d8.toInt() + h5.toInt() * r3);
d8 = Int32(d8.toInt() + h6.toInt() * r2);
d8 = Int32(d8.toInt() + h7.toInt() * r1);
d8 = Int32(d8.toInt() + h8.toInt() * r0);
d8 = Int32(d8.toInt() + h9.toInt() * (5 * r9));
c = Int32(c.toInt() + (d8.shiftRightUnsigned(13)).toInt()); d8 &= 0x1fff;
d9 = c;
d9 = Int32(d9.toInt() + h0.toInt() * r9);
d9 = Int32(d9.toInt() + h1.toInt() * r8);
d9 = Int32(d9.toInt() + h2.toInt() * r7);
d9 = Int32(d9.toInt() + h3.toInt() * r6);
d9 = Int32(d9.toInt() + h4.toInt() * r5);
c = (d9.shiftRightUnsigned(13)); d9 &= 0x1fff;
d9 = Int32(d9.toInt() + h5.toInt() * r4);
d9 = Int32(d9.toInt() + h6.toInt() * r3);
d9 = Int32(d9.toInt() + h7.toInt() * r2);
d9 = Int32(d9.toInt() + h8.toInt() * r1);
d9 = Int32(d9.toInt() + h9.toInt() * r0);
c = Int32(c.toInt() + (d9.shiftRightUnsigned(13)).toInt()); d9 &= 0x1fff;
c = Int32(((c << 2).toInt() + c.toInt()) | 0);
c = Int32((c.toInt() + d0.toInt()) | 0);
d0 = c & 0x1fff;
c = (c.shiftRightUnsigned(13));
d1 = Int32(d1.toInt() + c.toInt());
h0 = d0;
h1 = d1;
h2 = d2;
h3 = d3;
h4 = d4;
h5 = d5;
h6 = d6;
h7 = d7;
h8 = d8;
h9 = d9;
mpos += 16;
bytes -= 16;
}
_h[0] = h0;
_h[1] = h1;
_h[2] = h2;
_h[3] = h3;
_h[4] = h4;
_h[5] = h5;
_h[6] = h6;
_h[7] = h7;
_h[8] = h8;
_h[9] = h9;
return this;
}
