Merge pull request #5744 from mpg/benchmark-ecc-heap-2.28

[backport 2.28]  Improve benchmarking of ECC heap usage

programs/test/benchmark.c

@@ -152,11 +152,12 @@ do {                                                                    \
  * Updated manually as the output of the following command:
  *
  *  sed -n 's/.*[T]IME_PUBLIC.*"\(.*\)",/\1/p' programs/test/benchmark.c |
- *      awk '{print length+2}' | sort -rn | head -n1
+ *      awk '{print length+3}' | sort -rn | head -n1
  *
- * This computes the maximum length of a title +2 (because we appends "/s").
+ * This computes the maximum length of a title +3, because we appends "/s" and
- * (If the value is too small, the only consequence is poor alignement.) */
+ * want at least one space. (If the value is too small, the only consequence
-#define TITLE_SPACE 16
+ * is poor alignement.) */
+#define TITLE_SPACE 17
 
 #define MEMORY_MEASURE_INIT                                             \
     size_t max_used, max_blocks, max_bytes;                             \

scripts/ecc-heap.sh

@@ -54,32 +54,45 @@ cat << EOF >$CONFIG_H
 
 #define MBEDTLS_BIGNUM_C
 #define MBEDTLS_ECP_C
+#define MBEDTLS_ECP_NO_INTERNAL_RNG
 #define MBEDTLS_ASN1_PARSE_C
 #define MBEDTLS_ASN1_WRITE_C
 #define MBEDTLS_ECDSA_C
+#define MBEDTLS_SHA256_C // ECDSA benchmark needs it
+#define MBEDTLS_SHA224_C // SHA256 requires this for now
 #define MBEDTLS_ECDH_C
 
-#define MBEDTLS_ECP_DP_SECP192R1_ENABLED
+// NIST curves >= 256 bits
-#define MBEDTLS_ECP_DP_SECP224R1_ENABLED
 #define MBEDTLS_ECP_DP_SECP256R1_ENABLED
 #define MBEDTLS_ECP_DP_SECP384R1_ENABLED
 #define MBEDTLS_ECP_DP_SECP521R1_ENABLED
+// SECP "koblitz-like" curve >= 256 bits
+#define MBEDTLS_ECP_DP_SECP256K1_ENABLED
+// Brainpool curves (no specialised "mod p" routine)
+#define MBEDTLS_ECP_DP_BP256R1_ENABLED
+#define MBEDTLS_ECP_DP_BP384R1_ENABLED
+#define MBEDTLS_ECP_DP_BP512R1_ENABLED
+// Montgomery curves
 #define MBEDTLS_ECP_DP_CURVE25519_ENABLED
+#define MBEDTLS_ECP_DP_CURVE448_ENABLED
 
 #include "check_config.h"
 
-//#define MBEDTLS_ECP_WINDOW_SIZE            6
+#define MBEDTLS_HAVE_ASM // just make things a bit faster
+#define MBEDTLS_ECP_NIST_OPTIM // faster and less allocations
+
+//#define MBEDTLS_ECP_WINDOW_SIZE            4
 //#define MBEDTLS_ECP_FIXED_POINT_OPTIM      1
 EOF
 
 for F in 0 1; do
-    for W in 2 3 4 5 6; do
+    for W in 2 3 4; do
         scripts/config.py set MBEDTLS_ECP_WINDOW_SIZE $W
         scripts/config.py set MBEDTLS_ECP_FIXED_POINT_OPTIM $F
         make benchmark >/dev/null 2>&1
         echo "fixed point optim = $F, max window size = $W"
         echo "--------------------------------------------"
-        programs/test/benchmark
+        programs/test/benchmark ecdh ecdsa
     done
 done