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Diffstat (limited to 'stm32_driver/ecdsa256_driver_sample.c')
-rw-r--r--stm32_driver/ecdsa256_driver_sample.c344
1 files changed, 171 insertions, 173 deletions
diff --git a/stm32_driver/ecdsa256_driver_sample.c b/stm32_driver/ecdsa256_driver_sample.c
index cef4af0..8047e98 100644
--- a/stm32_driver/ecdsa256_driver_sample.c
+++ b/stm32_driver/ecdsa256_driver_sample.c
@@ -1,173 +1,171 @@
- //
- // simple driver to test "ecdsa384" core in hardware
- //
-
- //
- // note, that the test program needs a custom bitstream where
- // the core is located at offset 0 (without the core selector)
- //
-
- // stm32 headers
-#include "stm-init.h"
-#include "stm-led.h"
-#include "stm-fmc.h"
-
- // locations of core registers
-#define CORE_ADDR_NAME0 (0x00 << 2)
-#define CORE_ADDR_NAME1 (0x01 << 2)
-#define CORE_ADDR_VERSION (0x02 << 2)
-#define CORE_ADDR_CONTROL (0x08 << 2)
-#define CORE_ADDR_STATUS (0x09 << 2)
-
- // locations of data buffers
-#define CORE_ADDR_BUF_K (0x20 << 2)
-#define CORE_ADDR_BUF_X (0x28 << 2)
-#define CORE_ADDR_BUF_Y (0x30 << 2)
-
- // bit maps
-#define CORE_CONTROL_BIT_NEXT 0x00000002
-#define CORE_STATUS_BIT_READY 0x00000002
-
- // curve selection
-#define USE_CURVE 1
-
-#include "ecdsa_model.h"
-
-#define BUF_NUM_WORDS (OPERAND_WIDTH / (sizeof(uint32_t) << 3)) // 8
-
- //
- // test vectors
- //
-static const uint32_t p256_d[BUF_NUM_WORDS] = ECDSA_D;
-static const uint32_t p256_qx[BUF_NUM_WORDS] = ECDSA_Q_X;
-static const uint32_t p256_qy[BUF_NUM_WORDS] = ECDSA_Q_Y;
-
-static const uint32_t p256_k[BUF_NUM_WORDS] = ECDSA_K;
-static const uint32_t p256_rx[BUF_NUM_WORDS] = ECDSA_R_X;
-static const uint32_t p256_ry[BUF_NUM_WORDS] = ECDSA_R_Y;
-
-static const uint32_t p256_i[BUF_NUM_WORDS] = ECDSA_ONE;
-static const uint32_t p256_gx[BUF_NUM_WORDS] = ECDSA_G_X;
-static const uint32_t p256_gy[BUF_NUM_WORDS] = ECDSA_G_Y;
-
-static const uint32_t p256_z[BUF_NUM_WORDS] = ECDSA_ZERO;
-static const uint32_t p256_n[BUF_NUM_WORDS] = ECDSA_N;
-
- //
- // prototypes
- //
-void toggle_yellow_led(void);
-int test_p256_multiplier(const uint32_t *k, const uint32_t *px, const uint32_t *py);
-
- //
- // test routine
- //
-int main()
-{
- int ok;
-
- stm_init();
- fmc_init();
-
- led_on(LED_GREEN);
- led_off(LED_RED);
-
- led_off(LED_YELLOW);
- led_off(LED_BLUE);
-
- uint32_t core_name0;
- uint32_t core_name1;
-
- fmc_read_32(CORE_ADDR_NAME0, &core_name0);
- fmc_read_32(CORE_ADDR_NAME1, &core_name1);
-
- // "ecds", "a256"
- if ((core_name0 != 0x65636473) || (core_name1 != 0x61323536))
- {
- led_off(LED_GREEN);
- led_on(LED_RED);
- while (1);
- }
-
- // repeat forever
- while (1)
- {
- ok = 1;
- ok = ok && test_p256_multiplier(p256_d, p256_qx, p256_qy);
- ok = ok && test_p256_multiplier(p256_k, p256_rx, p256_ry);
- ok = ok && test_p256_multiplier(p256_z, p256_z, p256_z);
- ok = ok && test_p256_multiplier(p256_i, p256_gx, p256_gy);
- ok = ok && test_p256_multiplier(p256_n, p256_z, p256_z);
-
- if (!ok)
- { led_off(LED_GREEN);
- led_on(LED_RED);
- }
-
- toggle_yellow_led();
- }
-}
-
-
- //
- // this routine uses the hardware multiplier to obtain Q(qx,qy), which is the
- // scalar multiple of the base point, qx and qy are then compared to the values
- // px and py (correct result known in advance)
- //
-int test_p256_multiplier(const uint32_t *k, const uint32_t *px, const uint32_t *py)
-{
- int i, num_cyc;
- uint32_t reg_control, reg_status;
- uint32_t k_word, qx_word, qy_word;
-
- // fill k
- for (i=0; i<BUF_NUM_WORDS; i++)
- { k_word = k[i];
- fmc_write_32(CORE_ADDR_BUF_K + ((BUF_NUM_WORDS - (i + 1)) * sizeof(uint32_t)), &k_word);
- }
-
- // clear 'next' control bit, then set 'next' control bit again to trigger new operation
- reg_control = 0;
- fmc_write_32(CORE_ADDR_CONTROL, &reg_control);
- reg_control = CORE_CONTROL_BIT_NEXT;
- fmc_write_32(CORE_ADDR_CONTROL, &reg_control);
-
- // wait for 'ready' status bit to be set
- num_cyc = 0;
- do
- { num_cyc++;
- fmc_read_32(CORE_ADDR_STATUS, &reg_status);
- }
- while (!(reg_status & CORE_STATUS_BIT_READY));
-
- // read back x and y word-by-word, then compare to the reference values
- for (i=0; i<BUF_NUM_WORDS; i++)
- {
- fmc_read_32(CORE_ADDR_BUF_X + (i * sizeof(uint32_t)), &qx_word);
- fmc_read_32(CORE_ADDR_BUF_Y + (i * sizeof(uint32_t)), &qy_word);
-
- if ((qx_word != px[BUF_NUM_WORDS - (i + 1)])) return 0;
- if ((qy_word != py[BUF_NUM_WORDS - (i + 1)])) return 0;
- }
-
- // everything went just fine
- return 1;
-}
-
- //
- // toggle the yellow led to indicate that we're not stuck somewhere
- //
-void toggle_yellow_led(void)
-{
- static int led_state = 0;
-
- led_state = !led_state;
-
- if (led_state) led_on(LED_YELLOW);
- else led_off(LED_YELLOW);
-}
-
-
- //
- // end of file
- //
+//
+// simple driver to test "ecdsa384" core in hardware
+//
+
+//
+// note, that the test program needs a custom bitstream where
+// the core is located at offset 0 (without the core selector)
+//
+
+// stm32 headers
+#include "stm-init.h"
+#include "stm-led.h"
+#include "stm-fmc.h"
+
+// locations of core registers
+#define CORE_ADDR_NAME0 (0x00 << 2)
+#define CORE_ADDR_NAME1 (0x01 << 2)
+#define CORE_ADDR_VERSION (0x02 << 2)
+#define CORE_ADDR_CONTROL (0x08 << 2)
+#define CORE_ADDR_STATUS (0x09 << 2)
+
+// locations of data buffers
+#define CORE_ADDR_BUF_K (0x20 << 2)
+#define CORE_ADDR_BUF_X (0x28 << 2)
+#define CORE_ADDR_BUF_Y (0x30 << 2)
+
+// bit maps
+#define CORE_CONTROL_BIT_NEXT 0x00000002
+#define CORE_STATUS_BIT_READY 0x00000002
+
+// curve selection
+#define USE_CURVE 1
+
+#include "ecdsa_model.h"
+
+#define BUF_NUM_WORDS (OPERAND_WIDTH / (sizeof(uint32_t) << 3)) // 8
+
+//
+// test vectors
+//
+static const uint32_t p256_d[BUF_NUM_WORDS] = ECDSA_D;
+static const uint32_t p256_qx[BUF_NUM_WORDS] = ECDSA_Q_X;
+static const uint32_t p256_qy[BUF_NUM_WORDS] = ECDSA_Q_Y;
+
+static const uint32_t p256_k[BUF_NUM_WORDS] = ECDSA_K;
+static const uint32_t p256_rx[BUF_NUM_WORDS] = ECDSA_R_X;
+static const uint32_t p256_ry[BUF_NUM_WORDS] = ECDSA_R_Y;
+
+static const uint32_t p256_i[BUF_NUM_WORDS] = ECDSA_ONE;
+static const uint32_t p256_gx[BUF_NUM_WORDS] = ECDSA_G_X;
+static const uint32_t p256_gy[BUF_NUM_WORDS] = ECDSA_G_Y;
+
+static const uint32_t p256_z[BUF_NUM_WORDS] = ECDSA_ZERO;
+static const uint32_t p256_n[BUF_NUM_WORDS] = ECDSA_N;
+
+//
+// prototypes
+//
+void toggle_yellow_led(void);
+int test_p256_multiplier(const uint32_t *k, const uint32_t *px, const uint32_t *py);
+
+//
+// test routine
+//
+int main()
+{
+ int ok;
+
+ stm_init();
+ fmc_init();
+
+ led_on(LED_GREEN);
+ led_off(LED_RED);
+
+ led_off(LED_YELLOW);
+ led_off(LED_BLUE);
+
+ uint32_t core_name0;
+ uint32_t core_name1;
+
+ fmc_read_32(CORE_ADDR_NAME0, &core_name0);
+ fmc_read_32(CORE_ADDR_NAME1, &core_name1);
+
+ // "ecds", "a256"
+ if ((core_name0 != 0x65636473) || (core_name1 != 0x61323536)) {
+ led_off(LED_GREEN);
+ led_on(LED_RED);
+ while (1);
+ }
+
+ // repeat forever
+ while (1)
+ {
+ ok = 1;
+ ok = ok && test_p256_multiplier(p256_d, p256_qx, p256_qy);
+ ok = ok && test_p256_multiplier(p256_k, p256_rx, p256_ry);
+ ok = ok && test_p256_multiplier(p256_z, p256_z, p256_z);
+ ok = ok && test_p256_multiplier(p256_i, p256_gx, p256_gy);
+ ok = ok && test_p256_multiplier(p256_n, p256_z, p256_z);
+
+ if (!ok) {
+ led_off(LED_GREEN);
+ led_on(LED_RED);
+ }
+
+ toggle_yellow_led();
+ }
+}
+
+
+//
+// this routine uses the hardware multiplier to obtain Q(qx,qy), which is the
+// scalar multiple of the base point, qx and qy are then compared to the values
+// px and py (correct result known in advance)
+//
+int test_p256_multiplier(const uint32_t *k, const uint32_t *px, const uint32_t *py)
+{
+ int i, num_cyc;
+ uint32_t reg_control, reg_status;
+ uint32_t k_word, qx_word, qy_word;
+
+ // fill k
+ for (i=0; i<BUF_NUM_WORDS; i++) {
+ k_word = k[i];
+ fmc_write_32(CORE_ADDR_BUF_K + ((BUF_NUM_WORDS - (i + 1)) * sizeof(uint32_t)), &k_word);
+ }
+
+ // clear 'next' control bit, then set 'next' control bit again to trigger new operation
+ reg_control = 0;
+ fmc_write_32(CORE_ADDR_CONTROL, &reg_control);
+ reg_control = CORE_CONTROL_BIT_NEXT;
+ fmc_write_32(CORE_ADDR_CONTROL, &reg_control);
+
+ // wait for 'ready' status bit to be set
+ num_cyc = 0;
+ do {
+ num_cyc++;
+ fmc_read_32(CORE_ADDR_STATUS, &reg_status);
+ }
+ while (!(reg_status & CORE_STATUS_BIT_READY));
+
+ // read back x and y word-by-word, then compare to the reference values
+ for (i=0; i<BUF_NUM_WORDS; i++) {
+ fmc_read_32(CORE_ADDR_BUF_X + (i * sizeof(uint32_t)), &qx_word);
+ fmc_read_32(CORE_ADDR_BUF_Y + (i * sizeof(uint32_t)), &qy_word);
+
+ if ((qx_word != px[BUF_NUM_WORDS - (i + 1)])) return 0;
+ if ((qy_word != py[BUF_NUM_WORDS - (i + 1)])) return 0;
+ }
+
+ // everything went just fine
+ return 1;
+}
+
+//
+// toggle the yellow led to indicate that we're not stuck somewhere
+//
+void toggle_yellow_led(void)
+{
+ static int led_state = 0;
+
+ led_state = !led_state;
+
+ if (led_state) led_on(LED_YELLOW);
+ else led_off(LED_YELLOW);
+}
+
+
+//
+// end of file
+//
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