feat: adds DS Sign capabilities for ESP32S2

components/soc/esp32s2/include/soc/Kconfig.soc_caps.in

@@ -363,6 +363,18 @@ config SOC_CPU_WATCHPOINT_MAX_REGION_SIZE
     hex
     default 0x40
 
+config SOC_DS_SIGNATURE_MAX_BIT_LEN
+    int
+    default 4096
+
+config SOC_DS_KEY_PARAM_MD_IV_LENGTH
+    int
+    default 16
+
+config SOC_DS_KEY_CHECK_MAX_WAIT_US
+    int
+    default 1100
+
 config SOC_DAC_CHAN_NUM
     int
     default 2

components/soc/esp32s2/include/soc/soc_caps.h

@@ -159,6 +159,17 @@
 #define SOC_CPU_WATCHPOINTS_NUM             2
 #define SOC_CPU_WATCHPOINT_MAX_REGION_SIZE  0x40 // bytes
 
+/*-------------------------- DIGITAL SIGNATURE CAPS ----------------------------------------*/
+/** The maximum length of a Digital Signature in bits. */
+#define SOC_DS_SIGNATURE_MAX_BIT_LEN (4096)
+
+/** Initialization vector (IV) length for the RSA key parameter message digest (MD) in bytes. */
+#define SOC_DS_KEY_PARAM_MD_IV_LENGTH (16)
+
+/** Maximum wait time for DS parameter decryption key. If overdue, then key error.
+    See TRM DS chapter for more details */
+#define SOC_DS_KEY_CHECK_MAX_WAIT_US (1100)
+
 /*-------------------------- DAC CAPS ----------------------------------------*/
 #define SOC_DAC_CHAN_NUM      2
 #define SOC_DAC_RESOLUTION      8 // DAC resolution ratio 8 bit