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-rw-r--r--projects/hsm/Makefile1
-rw-r--r--projects/hsm/hsm.c18
-rw-r--r--projects/hsm/mgmt-keystore.c35
-rw-r--r--projects/hsm/mgmt-masterkey.c90
-rw-r--r--projects/hsm/mgmt-task.c6
5 files changed, 116 insertions, 34 deletions
diff --git a/projects/hsm/Makefile b/projects/hsm/Makefile
index 3430e14..37c552d 100644
--- a/projects/hsm/Makefile
+++ b/projects/hsm/Makefile
@@ -25,7 +25,6 @@ LDFLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
LDFLAGS += -Wl,--gc-sections
ifdef DO_PROFILING
-OBJS += $(TOPLEVEL)/memfunc.o
LDFLAGS += --specs=rdimon.specs -lc -lrdimon
endif
diff --git a/projects/hsm/hsm.c b/projects/hsm/hsm.c
index 29509e8..52157c9 100644
--- a/projects/hsm/hsm.c
+++ b/projects/hsm/hsm.c
@@ -86,9 +86,8 @@ static uint8_t busy_stack[BUSY_STACK_SIZE];
* 4096-byte block of an FPGA or bootloader image upload.
*/
#ifndef CLI_STACK_SIZE
-#define CLI_STACK_SIZE 8*1024
+#define CLI_STACK_SIZE 16*1024
#endif
-static uint8_t cli_stack[CLI_STACK_SIZE];
/* RPC buffers. For each active request, there will be two - input and output.
*/
@@ -342,7 +341,6 @@ static void busy_task(void)
}
#include "stm-fpgacfg.h"
-#include "hashsig.h"
static void hashsig_restart_task(void)
{
@@ -396,6 +394,17 @@ static hal_error_t sdram_free(uint8_t *ptr)
return HAL_ERROR_FORBIDDEN;
}
+hal_error_t sdram_stats(size_t *used, size_t *available)
+{
+ if (used == NULL || available == NULL)
+ return HAL_ERROR_BAD_ARGUMENTS;
+
+ *used = sdram_heap - &_esdram1;
+ *available = &__end_sdram1 - sdram_heap;
+
+ return LIBHAL_OK;
+}
+
/* Implement static memory allocation for libhal over sdram_malloc().
*/
void *hal_allocate_static_memory(const size_t size)
@@ -501,7 +510,8 @@ int main(void)
*/
/* Create the CLI task. */
- if (task_add("cli", (funcp_t)cli_main, NULL, cli_stack, sizeof(cli_stack)) == NULL)
+ void *cli_stack = (void *)sdram_malloc(CLI_STACK_SIZE);
+ if (task_add("cli", (funcp_t)cli_main, NULL, cli_stack, CLI_STACK_SIZE) == NULL)
Error_Handler();
/* Start the tasker */
diff --git a/projects/hsm/mgmt-keystore.c b/projects/hsm/mgmt-keystore.c
index a7fdffe..9eb42da 100644
--- a/projects/hsm/mgmt-keystore.c
+++ b/projects/hsm/mgmt-keystore.c
@@ -50,6 +50,7 @@
#include <stdlib.h>
#include <string.h>
+#include <strings.h>
#include <ctype.h>
@@ -320,13 +321,34 @@ static int cmd_keystore_erase(struct cli_def *cli, const char *command, char *ar
{
hal_error_t err;
HAL_StatusTypeDef status;
+ int preserve_PINs = 0;
command = command;
- if (argc != 1 || strcmp(argv[0], "YesIAmSure") != 0) {
- cli_print(cli, "Syntax: keystore erase YesIAmSure");
+ if (argc < 1 || argc > 2 || strcmp(argv[0], "YesIAmSure") != 0) {
+ usage:
+ cli_print(cli, "Syntax: keystore erase YesIAmSure [preservePINs]");
return CLI_ERROR;
}
+ if (argc == 2) {
+ if (strcasecmp(argv[1], "preservePINs") != 0)
+ goto usage;
+ else
+ preserve_PINs = 1;
+ }
+
+ hal_user_t users[3] = { HAL_USER_NORMAL, HAL_USER_SO, HAL_USER_WHEEL };
+ hal_ks_pin_t pins[3];
+ if (preserve_PINs) {
+ for (size_t i = 0; i < 3; ++i) {
+ const hal_ks_pin_t *pin;
+ if (hal_get_pin(users[i], &pin) != HAL_OK) {
+ cli_print(cli, "Failed to get the PINs");
+ return CLI_ERROR;
+ }
+ memcpy(&pins[i], pin, sizeof(*pin));
+ }
+ }
cli_print(cli, "OK, erasing keystore, this will take about 45 seconds...");
if ((status = keystore_erase_bulk()) != CMSIS_HAL_OK) {
@@ -344,6 +366,15 @@ static int cmd_keystore_erase(struct cli_def *cli, const char *command, char *ar
return CLI_ERROR;
}
+ if (preserve_PINs) {
+ for (size_t i = 0; i < 3; ++i) {
+ if (hal_set_pin(users[i], &pins[i]) != HAL_OK) {
+ cli_print(cli, "Failed to restore the PINs");
+ return CLI_ERROR;
+ }
+ }
+ }
+
cli_print(cli, "Keystore erased");
return CLI_OK;
}
diff --git a/projects/hsm/mgmt-masterkey.c b/projects/hsm/mgmt-masterkey.c
index 765cb10..e63e0e0 100644
--- a/projects/hsm/mgmt-masterkey.c
+++ b/projects/hsm/mgmt-masterkey.c
@@ -60,24 +60,6 @@ static char * _status2str(const hal_error_t status)
}
}
-static int _parse_hex_groups(uint8_t *buf, size_t len, char *argv[], int argc)
-{
- int i;
- uint32_t *dst = (uint32_t *) buf;
- uint32_t *end = (uint32_t *) buf + len - 1;
- char *err_ptr = NULL;
-
- if (! argc) return 0;
-
- for (i = 0; i < argc; i++) {
- if (dst >= end) return -1;
- *dst++ = strtoul(argv[i], &err_ptr, 16);
- if (*err_ptr) return -2;
- }
-
- return 1;
-}
-
static int cmd_masterkey_status(struct cli_def *cli, const char *command, char *argv[], int argc)
{
hal_error_t status;
@@ -97,12 +79,54 @@ static int cmd_masterkey_status(struct cli_def *cli, const char *command, char *
return CLI_OK;
}
+static int str_to_hex_digit(char c)
+{
+ if (c >= '0' && c <= '9')
+ c -= '0';
+ else if (c >= 'a' && c <= 'f')
+ c = c - 'a' + 10;
+ else if (c >= 'A' && c <= 'F')
+ c = c - 'A' + 10;
+ else
+ return -1;
+
+ return c;
+}
+
+static inline char hex_to_str_digit(const uint8_t c)
+{
+ return (c < 10) ? ((char)c + '0') : ((char)c + 'A' - 10);
+}
+
+static char *hexdump_kek(const uint8_t * const kek)
+{
+ /* This is only for dumping masterkey values, so has no length checks.
+ * Do not use it for anything else.
+ *
+ * For convenience of possibly hand-copying and hand-retyping, the key
+ * is divided into 8 4-byte (8-character) groups.
+ */
+
+ static char buf[2 * KEK_LENGTH + 8];
+ char *dst = buf;
+
+ for (size_t i = 0; i < KEK_LENGTH; ++i) {
+ uint8_t b = kek[i];
+ *dst++ = hex_to_str_digit(b >> 4);
+ *dst++ = hex_to_str_digit(b & 0xf);
+ if ((i & 3) == 3)
+ *dst++ = ' ';
+ }
+ buf[sizeof(buf) - 1] = '\0';
+
+ return buf;
+}
+
static int _masterkey_set(struct cli_def *cli, char *argv[], int argc,
char *label, hal_error_t (*writer)(const uint8_t * const, const size_t))
{
uint8_t buf[KEK_LENGTH] = {0};
hal_error_t err;
- int i;
if (argc == 0) {
/* fill master key with yummy randomness */
@@ -110,20 +134,32 @@ static int _masterkey_set(struct cli_def *cli, char *argv[], int argc,
cli_print(cli, "Error getting random key: %s", hal_error_string(err));
return CLI_ERROR;
}
- cli_print(cli, "Random key:\n");
- uart_send_hexdump(buf, 0, sizeof(buf) - 1);
- cli_print(cli, "\n");
+ cli_print(cli, "Random key:\n%s", hexdump_kek(buf));
}
else {
- if ((i = _parse_hex_groups(&buf[0], sizeof(buf), argv, argc)) != 1) {
- cli_print(cli, "Failed parsing master key, expected up to 8 groups of 32-bit hex chars (%i)", i);
+ /* input is 32 hex bytes, arranged however the user wants */
+ size_t len = 0;
+ for (int i = 0; i < argc; ++i) {
+ for (char *cp = argv[i]; *cp != '\0'; ) {
+ int c;
+ if ((c = str_to_hex_digit(*cp++)) < 0)
+ goto errout;
+ buf[len] = c << 4;
+ if ((c = str_to_hex_digit(*cp++)) < 0)
+ goto errout;
+ buf[len] |= c & 0xf;
+ if (++len > KEK_LENGTH)
+ goto errout;
+ }
+ }
+ if (len < KEK_LENGTH) {
+ errout:
+ cli_print(cli, "Failed parsing master key, expected exactly %d hex bytes", KEK_LENGTH);
return CLI_ERROR;
}
- cli_print(cli, "Parsed key:\n");
- uart_send_hexdump(buf, 0, sizeof(buf) - 1);
- cli_print(cli, "\n");
+ cli_print(cli, "Parsed key:\n%s", hexdump_kek(buf));
}
if ((err = writer(buf, sizeof(buf))) == LIBHAL_OK) {
diff --git a/projects/hsm/mgmt-task.c b/projects/hsm/mgmt-task.c
index c2a3d3f..180c6d9 100644
--- a/projects/hsm/mgmt-task.c
+++ b/projects/hsm/mgmt-task.c
@@ -74,6 +74,12 @@ static int cmd_task_show(struct cli_def *cli, const char *command, char *argv[],
cli_print(cli, " ");
cli_print(cli, "UART receive queue maximum length: %u", uart_rx_max);
+ size_t used, available;
+ extern void sdram_stats(size_t *used, size_t *available);
+ sdram_stats(&used, &available);
+ cli_print(cli, " ");
+ cli_print(cli, "SDRAM used: %u, available: %u", used, available);
+
return CLI_OK;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-20 05:35:56 +0000