Improved performance on dedicated P-256/i15 EC implementation.

[BearSSL] / src / config.h

diff --git a/src/config.h b/src/config.h
index e7a440e..5de3a5a 100644 (file)
--- a/src/config.h
+++ b/src/config.h
@@ -50,6 +50,15 @@
 #define BR_SLOW_MUL   1
  */
 
 #define BR_SLOW_MUL   1
  */
 

+/*
+ * When BR_SLOW_MUL15 is enabled, short multplications (on 15-bit words)
+ * are assumed to be substantially slow with regards to other integer
+ * operations, thus making it worth to make more integer operations if
+ * it allows using less multiplications.
+ *
+#define BR_SLOW_MUL15   1
+ */
+

 /*
  * When BR_CT_MUL31 is enabled, multiplications of 31-bit values (used
  * in the "i31" big integer implementation) use an alternate implementation
 /*
  * When BR_CT_MUL31 is enabled, multiplications of 31-bit values (used
  * in the "i31" big integer implementation) use an alternate implementation