update

src/Home/TweetNaCl/TweetNaCl.ZC

@@ -600,7 +600,7 @@ I64 crypto_Scalarmult(U8 *q, U8 *n, U8 *p) {
     x[i + 48] = b[i];
     x[i + 64] = d[i];
   }
-  inv25519(x + 32, x + 32);
+  Inv25519(x + 32, x + 32);
   M(x + 16, x + 16, x + 32);
   Pack25519(q, x + 16);
   return 0;
@@ -704,99 +704,99 @@ I64 crypto_hash(U8 *out, U8 *m, U64 n) {
 
 
 // FIXME: cant predefine p[4][16] like that!!!
-U0 add(U16 p[4][16], U16 q[4][16])
-{
-  U16 a[16], b[16], c[16], d[16], t[16], e[16], f[16], g[16], h[16];
 
-  Z(a, p[1], p[0]);
+U0 Add(gf *p, gf *q) {
-  Z(t, q[1], q[0]);
+    gf a, b, c, d, t, e, f, g, h;
-  M(a, a, t);
-  A(b, p[0], p[1]);
-  A(t, q[0], q[1]);
-  M(b, b, t);
-  M(c, p[3], q[3]);
-  M(c, c, D2);
-  M(d, p[2], q[2]);
-  A(d, d, d);
-  Z(e, b, a);
-  Z(f, d, c);
-  A(g, d, c);
-  A(h, b, a);
     
-  M(p[0], e, f);
+    Z(a.data, p[1].data, p[0].data);
-  M(p[1], h, g);
+    Z(t.data, q[1].data, q[0].data);
-  M(p[2], g, f);
+    M(a.data, a.data, t.data);
-  M(p[3], e, h);
+    A(b.data, p[0].data, p[1].data);
+    A(t.data, q[0].data, q[1].data);
+    M(b.data, b.data, t.data);
+    M(c.data, p[3].data, q[3].data);
+    M(c.data, c.data, D2.data);
+    M(d.data, p[2].data, q[2].data);
+    A(d.data, d.data, d.data);
+    Z(e.data, b.data, a.data);
+    Z(f.data, d.data, c.data);
+    A(g.data, d.data, c.data);
+    A(h.data, b.data, a.data);
+
+    M(p[0].data, e.data, f.data);
+    M(p[1].data, h.data, g.data);
+    M(p[2].data, g.data, f.data);
+    M(p[3].data, e.data, h.data);
 }
 
-U0 Cswap(U16 p[4][16], U16 q[4][16], U8 b)
+U0 Cswap(gf *p, gf *q, U8 b) {
-{
+    I64 i;
-  I64 i;
+    for (i = 0; i < 4; ++i) {
-  for (i = 0;i < 4;++i) Sel25519(p[i],q[i],b);
+        Sel25519(p[i].data, q[i].data, b);
-}
+    }
-
+}
-U0 Pack(U8 *r, U16 p[4][16])
+
-{
+U0 Pack(U8 *r, gf *p) {
-  U16 tx[16], ty[16], zi[16];
+    gf tx, ty, zi;
-  inv25519(zi, p[2]); 
+    Inv25519(&zi, p[2].data);
-  M(tx, p[0], zi);
+    M(tx.data, p[0].data, zi.data);
-  M(ty, p[1], zi);
+    M(ty.data, p[1].data, zi.data);
-  Pack25519(r, ty);
+    Pack25519(r, ty.data);
-  r[31] ^= Par25519(tx) << 7;
+    r[31] ^= Par25519(tx.data) << 7;
-}
+}
-
+
-U0 Scalarmult(U16 p[4][16], U16 q[4][16], U8 *s)
+U0 Scalarmult(gf *p, gf *q, U8 *s) {
-{
+    I64 i;
-  I64 i;
+    Set25519(p[0].data, gf0.data);
-  Set25519(p[0],gf0);
+    Set25519(p[1].data, gf1.data);
-  Set25519(p[1],gf1);
+    Set25519(p[2].data, gf1.data);
-  Set25519(p[2],gf1);
+    Set25519(p[3].data, gf0.data);
-  Set25519(p[3],gf0);
+    for (i = 255; i >= 0; --i) {
-  for (i = 255;i >= 0;--i) {
+        U8 b = (s[i / 8] >> (i & 7)) & 1;
-    U8 b = (s[i/8]>>(i&7))&1;
+        Cswap(p, q, b);
-    Cswap(p,q,b);
+        Add(p, q);
-    add(q,p);
+        Add(p, p);
-    add(p,p);
+        Cswap(p, q, b);
-    Cswap(p,q,b);
+    }
-  }
+}
-}
+
-
+U0 Scalarbase(gf *p, U8 *s) {
-U0 Scalarbase(U16 p[4][16], U8 *s)
+    gf q[4];
-{
+    Set25519(q[0].data, X.data);
-  U16 q[4][16];
+    Set25519(q[1].data, Y.data);
-  Set25519(q[0],X);
+    Set25519(q[2].data, gf1.data);
-  Set25519(q[1],Y);
+    M(q[3].data, X.data, Y.data);
-  Set25519(q[2],gf1);
+    Scalarmult(p, q, s);
-  M(q[3],X,Y);
+}
-  Scalarmult(p,q,s);
+
-}
+U64 L[32] = {0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x10};
-
+
-U64 L[] = {0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x10};
+U0 modL(U8 *r, I64 *x) {
-
+    I64 carry, i, j, index;
-U0 modL(U8 *r, I64 x[64])
+    for (i = 63; i >= 32; --i) {
-{
+        carry = 0;
-  I64 carry, i, j;
+        for (j = i - 32; j < i - 12; ++j) {
-  for (i = 63; i >= 32; --i) {
+            index = j - (i - 32);
-    carry = 0;
+            if (index >= 0 && index < 32) {
-    for (j = i - 32; j < i - 12; ++j) {
+                x[j] += carry - 16 * x[i] * L[index];
-      x[j] += carry - 16 * x[i] * L[j - (i - 32)];
+            }
-      carry = (x[j] + 128) >> 8;
+            carry = (x[j] + 128) >> 8;
-      x[j] -= carry << 8;
+            x[j] -= carry << 8;
+        }
+        x[j] += carry;
+        x[i] = 0;
+    }
+    carry = 0;
+    for (j = 0; j < 32; j++) {
+        x[j] += carry - (x[31] >> 4) * L[j];
+        carry = x[j] >> 8;
+        x[j] &= 255;
+    }
+    for (j = 0; j < 32; j++) x[j] -= carry * L[j];
+    for (i = 0; i < 32; i++) {
+        x[i+1] += x[i] >> 8;
+        r[i] = x[i] & 255;
     }
-    x[j] += carry;
-    x[i] = 0;
-  }
-  carry = 0;
-  for (j = 0; j < 32; j++) {
-    x[j] += carry - (x[31] >> 4) * L[j];
-    carry = x[j] >> 8;
-    x[j] &= 255;
-  }
-  for (j = 0; j < 32; j++) x[j] -= carry * L[j];
-  for (i = 0; i < 32; i++) {
-    x[i+1] += x[i] >> 8;
-    r[i] = x[i] & 255;
-  }
 }
 
 U0 reduce(U8 *r)
@@ -891,7 +891,7 @@ I64 crypto_sign_open(U8 *m, U64 *mlen, U8 *sm, U64 n, U8 *pk)
   Scalarmult(p, q, h);
 
   Scalarbase(q, sm + 32);
-  add(p, q);
+  Add(p, q);
   Pack(t, p);
 
   n -= 64;