Decrypt guarded by GPIO toggle

templates/blackpill/Src/main.c

@@ -223,10 +223,6 @@ int main(void)
 			case 'S': write_variable_serial(nsec, nslen); break;
 			case 'P': write_variable_serial(npub, nplen); break;
 
-			case 'd':
-				res = crypto_aead_decrypt(m, &mlen,	nsec, c, clen, ad, adlen, npub, k);
-				break;
-
 			case 'e':
         #ifdef DEBUG
         dbg_printf("m: "); for (int i = 0; i < mlen; i++) dbg_printf("%02x", m[i]); dbg_printf("\n");
@@ -238,6 +234,19 @@ int main(void)
         res = crypto_aead_encrypt(c, &clen, m, mlen, ad, adlen, nsec, npub, k);
         LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_12);
 				break;
+      
+      case 'd':
+        #ifdef DEBUG
+        dbg_printf("m: "); for (int i = 0; i < mlen; i++) dbg_printf("%02x", m[i]); dbg_printf("\n");
+        dbg_printf("a: "); for (int i = 0; i < adlen; i++) dbg_printf("%02x", ad[i]); dbg_printf("\n");
+        dbg_printf("p: "); for (int i = 0; i < nplen; i++) dbg_printf("%02x", npub[i]); dbg_printf("\n");
+        dbg_printf("k: "); for (int i = 0; i < klen; i++) dbg_printf("%02x", k[i]); dbg_printf("\n");
+        #endif
+
+        LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_12);
+        res = crypto_aead_decrypt(m, &mlen, nsec, c, clen, ad, adlen, npub, k);
+        LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_12);
+        break;
 
       default:
         continue;

templates/f7/Src/main.c

@@ -229,10 +229,6 @@ int main(void)
 			case 'S': write_variable_serial(nsec, nslen); break;
 			case 'P': write_variable_serial(npub, nplen); break;
 
-			case 'd':
-				res = crypto_aead_decrypt(m, &mlen,	nsec, c, clen, ad, adlen, npub, k);
-				break;
-
 			case 'e':
         #ifdef DEBUG
         dbg_printf("m: "); for (int i = 0; i < mlen; i++) dbg_printf("%02x", m[i]); dbg_printf("\n");
@@ -244,6 +240,19 @@ int main(void)
         res = crypto_aead_encrypt(c, &clen, m, mlen, ad, adlen, nsec, npub, k);
         LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_7);
 				break;
+      
+      case 'd':
+        #ifdef DEBUG
+        dbg_printf("m: "); for (int i = 0; i < mlen; i++) dbg_printf("%02x", m[i]); dbg_printf("\n");
+        dbg_printf("a: "); for (int i = 0; i < adlen; i++) dbg_printf("%02x", ad[i]); dbg_printf("\n");
+        dbg_printf("p: "); for (int i = 0; i < nplen; i++) dbg_printf("%02x", npub[i]); dbg_printf("\n");
+        dbg_printf("k: "); for (int i = 0; i < klen; i++) dbg_printf("%02x", k[i]); dbg_printf("\n");
+        #endif
+
+        LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_12);
+        res = crypto_aead_decrypt(m, &mlen, nsec, c, clen, ad, adlen, npub, k);
+        LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_12);
+        break;
 
       default:
         continue;