commit 92be3fb667d98a11273a95a89b085dea207a6698
author Fabio Utzig <utzig@apache.org> Tue Dec 05 08:52:53 2017 -0200
committer David Brown <davidb@davidb.org> Wed Dec 13 14:26:08 2017 -0700
tree 2821b6a28440d3b87bf8bdb80ad6f0987a1833ec
parent c786540825ae058ac1a047263f899e374ed5c580

Add ecdsa signing support

Since ring does not yet support ecdsa signing, a thin layer was added
to allow the simulator to call tinycrypt's signing routine.

Signed-off-by: Fabio Utzig <utzig@apache.org>

sim/mcuboot-sys/csupport/run.c

diff --git a/sim/mcuboot-sys/csupport/run.c b/sim/mcuboot-sys/csupport/run.c
index 7010988..d749e49 100644
--- a/sim/mcuboot-sys/csupport/run.c
+++ b/sim/mcuboot-sys/csupport/run.c
@@ -10,6 +10,10 @@
 
 #include "../../../boot/bootutil/src/bootutil_priv.h"
 
+#ifdef MCUBOOT_SIGN_EC256
+#include "../../../ext/tinycrypt/lib/include/tinycrypt/ecc_dsa.h"
+#endif
+
 #define BOOT_LOG_LEVEL BOOT_LOG_LEVEL_ERROR
 #include <bootutil/bootutil_log.h>
 
@@ -22,6 +26,20 @@
 
 int jumped = 0;
 
+int ecdsa256_sign_(const uint8_t *privkey, const uint8_t *hash,
+                   unsigned hash_len, uint8_t *signature)
+{
+#ifdef MCUBOOT_SIGN_EC256
+    return uECC_sign(privkey, hash, hash_len, signature, uECC_secp256r1());
+#else
+    (void)privkey;
+    (void)hash;
+    (void)hash_len;
+    (void)signature;
+    return 0;
+#endif
+}
+
 uint8_t sim_flash_align = 1;
 uint8_t flash_area_align(const struct flash_area *area)
 {