Add ASN.1 parsing and more utility functions, + commands sketch.

1 files changed, 58 insertions, 5 deletions

diff --git a/pyecsca/codegen/main.c b/pyecsca/codegen/main.c
index fba5dc2..a1d43da 100644
--- a/pyecsca/codegen/main.c
+++ b/pyecsca/codegen/main.c
@@ -6,21 +6,74 @@
 #include "hash/hash.h"
 #include "bn.h"
 #include "prng.h"
-#include <string.h>
+#include "defs.h"
+#include <stdlib.h>
+
+static point_t *pubkey;
+static bn_t privkey;
+
+static curve_t *curve;
 
-uint8_t cmd_init_prng(uint8_t *data, uint16_t len) {
+static uint8_t cmd_init_prng(uint8_t *data, uint16_t len) {
     prng_seed(data, len);
     return 0;
 }
 
+static uint8_t cmd_set_curve(uint8_t *data, uint16_t len) {
+	// need p, [params], gx, gy, n
+	return 0;
+}
+
+static uint8_t cmd_generate(uint8_t *data, uint16_t len) {
+	// generate a keypair, export privkey and affine pubkey
+	return 0;
+}
+
+static uint8_t cmd_set_privkey(uint8_t *data, uint16_t len) {
+	// set the current privkey
+	return 0;
+}
+
+static uint8_t cmd_set_pubkey(uint8_t *data, uint16_t len) {
+	// set the current pubkey
+	return 0;
+}
+
+static uint8_t cmd_scalar_mult(uint8_t *data, uint16_t len) {
+	// perform base point scalar mult with supplied scalar, return affine point.
+	return 0;
+}
+
+static uint8_t cmd_ecdh(uint8_t *data, uint16_t len) {
+	//perform ECDH with provided point (and current privkey), output shared secret
+	return 0;
+}
+
+static uint8_t cmd_ecdsa_sign(uint8_t *data, uint16_t len) {
+	//perform ECDSA signature on supplied data, output signature
+	return 0;
+}
+
+static uint8_t cmd_ecdsa_verify(uint8_t *data, uint16_t len) {
+	//perform ECDSA verification on supplied data (and current pubkey), output status
+	return 0;
+}
+
 int main(void) {
     platform_init();
     prng_init();
     init_uart();
     trigger_setup();
     simpleserial_init();
-    simpleserial_addcmd('i', 4, cmd_init_prng);
-    while(1)
-        simpleserial_get();
+    simpleserial_addcmd('i', 32, cmd_init_prng);
+    simpleserial_addcmd('c', MAX_SS_LEN, cmd_set_curve);
+    simpleserial_addcmd('g', 0, cmd_generate);
+    simpleserial_addcmd('s', MAX_SS_LEN, cmd_set_privkey);
+    simpleserial_addcmd('w', MAX_SS_LEN, cmd_set_pubkey);
+    simpleserial_addcmd('m', MAX_SS_LEN, cmd_scalar_mult);
+    simpleserial_addcmd('e', MAX_SS_LEN, cmd_ecdh);
+    simpleserial_addcmd('a', MAX_SS_LEN, cmd_ecdsa_sign);
+    simpleserial_addcmd('v', MAX_SS_LEN, cmd_ecdsa_verify);
+    while(simpleserial_get());
     return 0;
 }
\ No newline at end of file