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-rw-r--r--src/mp_comba.cpp384
1 files changed, 384 insertions, 0 deletions
diff --git a/src/mp_comba.cpp b/src/mp_comba.cpp
new file mode 100644
index 000000000..450d955a7
--- /dev/null
+++ b/src/mp_comba.cpp
@@ -0,0 +1,384 @@
+/*************************************************
+* Comba Multiplication and Squaring Source File *
+* (C) 1999-2006 The Botan Project *
+*************************************************/
+
+#include <botan/mp_core.h>
+#include <botan/mp_asm.h>
+
+namespace Botan {
+
+extern "C" {
+
+/*************************************************
+* Comba 4x4 Multiplication *
+*************************************************/
+void bigint_comba_mul4(word z[8], const word x[4], const word y[4])
+ {
+ word w2 = 0, w1 = 0, w0 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[0]);
+ z[0] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[0]);
+ z[1] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[0]);
+ z[2] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[0]);
+ z[3] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[1], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[1]);
+ z[4] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[2], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[2]);
+ z[5] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[3], y[3]);
+ z[6] = w0;
+ z[7] = w1;
+ }
+
+/*************************************************
+* Comba 6x6 Multiplication *
+*************************************************/
+void bigint_comba_mul6(word z[12], const word x[6], const word y[6])
+ {
+ word w2 = 0, w1 = 0, w0 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[0]);
+ z[0] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[0]);
+ z[1] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[0]);
+ z[2] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[0]);
+ z[3] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[0]);
+ z[4] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[0]);
+ z[5] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[1], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[1]);
+ z[6] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[2], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[2]);
+ z[7] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[3], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[3]);
+ z[8] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[4], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[4]);
+ z[9] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[5], y[5]);
+ z[10] = w0;
+ z[11] = w1;
+ }
+
+/*************************************************
+* Comba 8x8 Multiplication *
+*************************************************/
+void bigint_comba_mul8(word z[16], const word x[8], const word y[8])
+ {
+ word w2 = 0, w1 = 0, w0 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[0]);
+ z[0] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[0]);
+ z[1] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[0]);
+ z[2] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[0]);
+ z[3] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[0]);
+ z[4] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[0]);
+ z[5] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[6]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[6], y[0]);
+ z[6] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], y[7]);
+ word3_muladd(&w2, &w1, &w0, x[1], y[6]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[6], y[1]);
+ word3_muladd(&w2, &w1, &w0, x[7], y[0]);
+ z[7] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[1], y[7]);
+ word3_muladd(&w2, &w1, &w0, x[2], y[6]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[6], y[2]);
+ word3_muladd(&w2, &w1, &w0, x[7], y[1]);
+ z[8] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[2], y[7]);
+ word3_muladd(&w2, &w1, &w0, x[3], y[6]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[6], y[3]);
+ word3_muladd(&w2, &w1, &w0, x[7], y[2]);
+ z[9] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[3], y[7]);
+ word3_muladd(&w2, &w1, &w0, x[4], y[6]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[6], y[4]);
+ word3_muladd(&w2, &w1, &w0, x[7], y[3]);
+ z[10] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[4], y[7]);
+ word3_muladd(&w2, &w1, &w0, x[5], y[6]);
+ word3_muladd(&w2, &w1, &w0, x[6], y[5]);
+ word3_muladd(&w2, &w1, &w0, x[7], y[4]);
+ z[11] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[5], y[7]);
+ word3_muladd(&w2, &w1, &w0, x[6], y[6]);
+ word3_muladd(&w2, &w1, &w0, x[7], y[5]);
+ z[12] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[6], y[7]);
+ word3_muladd(&w2, &w1, &w0, x[7], y[6]);
+ z[13] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[7], y[7]);
+ z[14] = w0;
+ z[15] = w1;
+ }
+
+/*************************************************
+* Comba 4x4 Squaring *
+*************************************************/
+void bigint_comba_sqr4(word z[8], const word x[4])
+ {
+ word w2 = 0, w1 = 0, w0 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], x[0]);
+ z[0] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[1]);
+ z[1] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[2]);
+ word3_muladd(&w2, &w1, &w0, x[1], x[1]);
+ z[2] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[3]);
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[2]);
+ z[3] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[3]);
+ word3_muladd(&w2, &w1, &w0, x[2], x[2]);
+ z[4] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[2], x[3]);
+ z[5] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[3], x[3]);
+ z[6] = w0;
+ z[7] = w1;
+ }
+
+/*************************************************
+* Comba 6x6 Squaring *
+*************************************************/
+void bigint_comba_sqr6(word z[12], const word x[6])
+ {
+ word w2 = 0, w1 = 0, w0 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], x[0]);
+ z[0] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[1]);
+ z[1] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[2]);
+ word3_muladd(&w2, &w1, &w0, x[1], x[1]);
+ z[2] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[3]);
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[2]);
+ z[3] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[4]);
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[3]);
+ word3_muladd(&w2, &w1, &w0, x[2], x[2]);
+ z[4] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[5]);
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[4]);
+ word3_muladd_2(&w2, &w1, &w0, x[2], x[3]);
+ z[5] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[5]);
+ word3_muladd_2(&w2, &w1, &w0, x[2], x[4]);
+ word3_muladd(&w2, &w1, &w0, x[3], x[3]);
+ z[6] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[2], x[5]);
+ word3_muladd_2(&w2, &w1, &w0, x[3], x[4]);
+ z[7] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[3], x[5]);
+ word3_muladd(&w2, &w1, &w0, x[4], x[4]);
+ z[8] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[4], x[5]);
+ z[9] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[5], x[5]);
+ z[10] = w0;
+ z[11] = w1;
+ }
+
+/*************************************************
+* Comba 8x8 Squaring *
+*************************************************/
+void bigint_comba_sqr8(word z[16], const word x[8])
+ {
+ word w2 = 0, w1 = 0, w0 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[0], x[0]);
+ z[0] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[1]);
+ z[1] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[2]);
+ word3_muladd(&w2, &w1, &w0, x[1], x[1]);
+ z[2] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[3]);
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[2]);
+ z[3] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[4]);
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[3]);
+ word3_muladd(&w2, &w1, &w0, x[2], x[2]);
+ z[4] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[5]);
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[4]);
+ word3_muladd_2(&w2, &w1, &w0, x[2], x[3]);
+ z[5] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[6]);
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[5]);
+ word3_muladd_2(&w2, &w1, &w0, x[2], x[4]);
+ word3_muladd(&w2, &w1, &w0, x[3], x[3]);
+ z[6] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[0], x[7]);
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[6]);
+ word3_muladd_2(&w2, &w1, &w0, x[2], x[5]);
+ word3_muladd_2(&w2, &w1, &w0, x[3], x[4]);
+ z[7] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[1], x[7]);
+ word3_muladd_2(&w2, &w1, &w0, x[2], x[6]);
+ word3_muladd_2(&w2, &w1, &w0, x[3], x[5]);
+ word3_muladd(&w2, &w1, &w0, x[4], x[4]);
+ z[8] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[2], x[7]);
+ word3_muladd_2(&w2, &w1, &w0, x[3], x[6]);
+ word3_muladd_2(&w2, &w1, &w0, x[4], x[5]);
+ z[9] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[3], x[7]);
+ word3_muladd_2(&w2, &w1, &w0, x[4], x[6]);
+ word3_muladd(&w2, &w1, &w0, x[5], x[5]);
+ z[10] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[4], x[7]);
+ word3_muladd_2(&w2, &w1, &w0, x[5], x[6]);
+ z[11] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[5], x[7]);
+ word3_muladd(&w2, &w1, &w0, x[6], x[6]);
+ z[12] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd_2(&w2, &w1, &w0, x[6], x[7]);
+ z[13] = w0; w0 = w1; w1 = w2; w2 = 0;
+
+ word3_muladd(&w2, &w1, &w0, x[7], x[7]);
+ z[14] = w0;
+ z[15] = w1;
+ }
+
+}
+
+}
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