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-rw-r--r--sw/modexp_tester.c184
1 files changed, 106 insertions, 78 deletions
diff --git a/sw/modexp_tester.c b/sw/modexp_tester.c
index 95a6513..21bebbd 100644
--- a/sw/modexp_tester.c
+++ b/sw/modexp_tester.c
@@ -45,7 +45,6 @@
#include "cryptech.h"
-
//------------------------------------------------------------------
// Global defines.
//------------------------------------------------------------------
@@ -56,12 +55,12 @@
//------------------------------------------------------------------
// Robs macros. Scary scary.
//------------------------------------------------------------------
-#define check(_expr_) \
- do { \
- if ((_expr_) != 0) { \
- printf("%s failed\n", #_expr_); \
- exit(1); \
- } \
+#define check(_expr_) \
+ do { \
+ if ((_expr_) != 0) { \
+ printf("%s failed\n", #_expr_); \
+ exit(1); \
+ } \
} while (0)
@@ -122,13 +121,13 @@ static void check_modulus_mem(void)
{
uint8_t i;
uint32_t j;
-
+
printf("Testing modulus mem access.\n");
tc_w32(MODEXP_MODULUS_PTR_RST, 0x00000000);
// Write test data to modulus mempory.
for (i = 0 ; i < 64; i = i + 1) {
- j = ((i * 4 + 3) << 24) + ((i * 4 + 2) << 16) +
+ j = ((i * 4 + 3) << 24) + ((i * 4 + 2) << 16) +
((i * 4 + 1) << 8) + i * 4;
tc_w32(MODEXP_MODULUS_DATA, j);
}
@@ -136,7 +135,7 @@ static void check_modulus_mem(void)
tc_w32(MODEXP_MODULUS_PTR_RST, 0x00000000);
// Read out test data from modulus mempory.
for (i = 0 ; i < 64 ; i = i + 4) {
- printf("modulus med: 0x%08x 0x%08x 0x%08x 0x%08x\n",
+ printf("modulus mem: 0x%08x 0x%08x 0x%08x 0x%08x\n",
tc_r32(MODEXP_MODULUS_DATA),
tc_r32(MODEXP_MODULUS_DATA),
tc_r32(MODEXP_MODULUS_DATA),
@@ -154,13 +153,13 @@ static void check_exponent_mem(void)
{
uint8_t i;
uint32_t j;
-
+
printf("Testing exponent mem access.\n");
tc_w32(MODEXP_EXPONENT_PTR_RST, 0x00000000);
// Write test data to exponent memory.
for (i = 0 ; i < 64; i = i + 1) {
- j = ((i * 4 + 3) << 24) + ((i * 4 + 2) << 16) +
+ j = ((i * 4 + 3) << 24) + ((i * 4 + 2) << 16) +
((i * 4 + 1) << 8) + i * 4;
tc_w32(MODEXP_EXPONENT_DATA, j);
}
@@ -187,13 +186,13 @@ static void check_message_mem(void)
{
uint8_t i;
uint32_t j;
-
+
printf("Testing message mem access.\n");
tc_w32(MODEXP_MESSAGE_PTR_RST, 0x00000000);
// Write test data to message memory.
for (i = 0 ; i < 64; i = i + 1) {
- j = ((i * 4 + 3) << 24) + ((i * 4 + 2) << 16) +
+ j = ((i * 4 + 3) << 24) + ((i * 4 + 2) << 16) +
((i * 4 + 1) << 8) + i * 4;
tc_w32(MODEXP_MESSAGE_DATA, j);
}
@@ -211,46 +210,34 @@ static void check_message_mem(void)
//------------------------------------------------------------------
-// tc1()
+// clear_mems()
//
-// c = m ** e % N with the following (decimal) test values:
-// m = 3
-// e = 7
-// n = 11
-// c = 3 ** 7 % 11 = 9
+// Zero fill the memories.
//------------------------------------------------------------------
-static void tc1()
+static void clear_mems()
{
- uint32_t result;
+ uint32_t i;
+ tc_w32(MODEXP_MESSAGE_PTR_RST, 0x00000000);
+ tc_w32(MODEXP_EXPONENT_PTR_RST, 0x00000000);
+ tc_w32(MODEXP_MODULUS_PTR_RST, 0x00000000);
- printf("Running TC1: 0x03 ** 0x07 mod 0x0b = 0x09\n");
+ for (i = 0 ; i < 256 ; i++) {
+ tc_w32(MODEXP_MESSAGE_DATA, 0x00000000);
+ tc_w32(MODEXP_EXPONENT_DATA, 0x00000000);
+ tc_w32(MODEXP_MODULUS_DATA, 0x00000000);
+ }
- // Write operands and set associated lengths.
- tc_w32(MODEXP_MESSAGE_PTR_RST, 0x00000000);
- tc_w32(MODEXP_MESSAGE_DATA, 0x00000003);
- tc_w32(MODEXP_LENGTH, 0x00000001);
-
+ tc_w32(MODEXP_MESSAGE_PTR_RST, 0x00000000);
tc_w32(MODEXP_EXPONENT_PTR_RST, 0x00000000);
- tc_w32(MODEXP_EXPONENT_DATA, 0x00000007);
- tc_w32(MODEXP_EXPONENT_LENGTH, 0x00000001);
-
- tc_w32(MODEXP_MODULUS_PTR_RST, 0x00000000);
- tc_w32(MODEXP_MODULUS_DATA, 0x0000000b);
- tc_w32(MODEXP_MODULUS_LENGTH, 0x00000001);
-
- // Start processing and wait for ready.
- tc_w32(MODEXP_ADDR_CTRL, 0x00000001);
- check(tc_wait_ready(MODEXP_ADDR_STATUS));
-
- // Dump contents of result memory.
- tc_w32(MODEXP_RESULT_PTR_RST, 0x00000000);
- result = tc_r32(MODEXP_RESULT_DATA);
- if (result == 0x00000009)
- printf("TC1: OK\n");
- else
- printf("TC1: Error. Expected 0x00000009, got 0x%08x\n", result);
+ tc_w32(MODEXP_MODULUS_PTR_RST, 0x00000000);
}
+
+//------------------------------------------------------------------
+// dump_mems()
+//
+// Dump the first words from the memories.
+//------------------------------------------------------------------
static void dump_mems()
{
tc_w32(MODEXP_MESSAGE_PTR_RST, 0x00000000);
@@ -276,11 +263,53 @@ static void dump_mems()
printf("0x%08x 0x%08x 0x%08x 0x%08x\n",
tc_r32(MODEXP_RESULT_DATA), tc_r32(MODEXP_RESULT_DATA),
tc_r32(MODEXP_RESULT_DATA), tc_r32(MODEXP_RESULT_DATA));
-
+
+ tc_w32(MODEXP_MESSAGE_PTR_RST, 0x00000000);
+ tc_w32(MODEXP_EXPONENT_PTR_RST, 0x00000000);
+ tc_w32(MODEXP_MODULUS_PTR_RST, 0x00000000);
+ tc_w32(MODEXP_RESULT_PTR_RST, 0x00000000);
+}
+
+
+//------------------------------------------------------------------
+// tc1()
+//
+// c = m ** e % N with the following (decimal) test values:
+// m = 3
+// e = 7
+// n = 11 (0x0b)
+// c = 3 ** 7 % 11 = 9
+//------------------------------------------------------------------
+static void tc1()
+{
+ uint32_t result;
+
+ printf("Running TC1: 0x03 ** 0x07 mod 0x0b = 0x09\n");
+
+ // Write operands and set associated lengths.
tc_w32(MODEXP_MESSAGE_PTR_RST, 0x00000000);
+ tc_w32(MODEXP_MESSAGE_DATA, 0x00000003);
+ tc_w32(MODEXP_LENGTH, 0x00000001);
+
tc_w32(MODEXP_EXPONENT_PTR_RST, 0x00000000);
+ tc_w32(MODEXP_EXPONENT_DATA, 0x00000007);
+ tc_w32(MODEXP_EXPONENT_LENGTH, 0x00000001);
+
tc_w32(MODEXP_MODULUS_PTR_RST, 0x00000000);
+ tc_w32(MODEXP_MODULUS_DATA, 0x0000000b);
+ tc_w32(MODEXP_MODULUS_LENGTH, 0x00000001);
+
+ // Start processing and wait for ready.
+ tc_w32(MODEXP_ADDR_CTRL, 0x00000001);
+ check(tc_wait_ready(MODEXP_ADDR_STATUS));
+
+ // Check result with expected value.
tc_w32(MODEXP_RESULT_PTR_RST, 0x00000000);
+ result = tc_r32(MODEXP_RESULT_DATA);
+ if (result == 0x00000009)
+ printf("TC1: OK\n");
+ else
+ printf("TC1: Error. Expected 0x00000009, got 0x%08x\n", result);
}
@@ -304,28 +333,24 @@ static void tc2()
tc_w32(MODEXP_MESSAGE_DATA, 0x000000fb);
tc_w32(MODEXP_MESSAGE_DATA, 0x00000000);
tc_w32(MODEXP_LENGTH, 0x00000001);
-
+
tc_w32(MODEXP_EXPONENT_PTR_RST, 0x00000000);
tc_w32(MODEXP_EXPONENT_DATA, 0x000000fb);
tc_w32(MODEXP_EXPONENT_DATA, 0x00000000);
tc_w32(MODEXP_EXPONENT_LENGTH, 0x00000001);
-
+
tc_w32(MODEXP_MODULUS_PTR_RST, 0x00000000);
tc_w32(MODEXP_MODULUS_DATA, 0x00000101);
tc_w32(MODEXP_MODULUS_DATA, 0x00000000);
tc_w32(MODEXP_MODULUS_LENGTH, 0x00000001);
- dump_mems();
-
// Start processing and wait for ready.
printf("TC2: Starting processing. Waiting for ready...\n");
tc_w32(MODEXP_ADDR_CTRL, 0x00000001);
check(tc_wait_ready(MODEXP_ADDR_STATUS));
printf("TC2: Ready seen.\n");
- dump_mems();
-
- // Dump contents of result memory.
+ // Check result with expected value.
tc_w32(MODEXP_RESULT_PTR_RST, 0x00000000);
result = tc_r32(MODEXP_RESULT_DATA);
if (result == 0x000000b7)
@@ -348,26 +373,28 @@ static void tc3()
{
uint32_t result;
+ clear_mems();
+
printf("Running TC3: 0x81 ** 0x41 mod 0x87 = 0x36\n");
// Write operands and set associated lengths.
tc_w32(MODEXP_MESSAGE_PTR_RST, 0x00000000);
tc_w32(MODEXP_MESSAGE_DATA, 0x00000081);
tc_w32(MODEXP_LENGTH, 0x00000001);
-
+
tc_w32(MODEXP_EXPONENT_PTR_RST, 0x00000000);
tc_w32(MODEXP_EXPONENT_DATA, 0x00000041);
tc_w32(MODEXP_EXPONENT_LENGTH, 0x00000001);
-
+
tc_w32(MODEXP_MODULUS_PTR_RST, 0x00000000);
tc_w32(MODEXP_MODULUS_DATA, 0x00000087);
tc_w32(MODEXP_MODULUS_LENGTH, 0x00000001);
-
+
// Start processing and wait for ready.
tc_w32(MODEXP_ADDR_CTRL, 0x00000001);
check(tc_wait_ready(MODEXP_ADDR_STATUS));
-
- // Dump contents of result memory.
+
+ // Check result with expected value.
tc_w32(MODEXP_RESULT_PTR_RST, 0x00000000);
result = tc_r32(MODEXP_RESULT_DATA);
if (result == 0x00000036)
@@ -381,70 +408,71 @@ static void tc3()
// tc4()
//
// c = m ** e % N with the following test values:
-// m = 251 (0xfb)
-// e = 251 (0xfb)
-// n = 257 (0x101)
-// c = 251 ** 251 % 257 = 183 (0xb7)
+// m = 0x00000001946473e1
+// e = 0xh000000010e85e74f
+// n = 0x0000000170754797
+// c = 0x000000007761ed4f
+//
+// These operands spans two 32-bit words.
//------------------------------------------------------------------
static void tc4()
{
- uint32_t result0;
- uint32_t result1;
+ uint32_t result0, result1;
- printf("Running TC4: 0x00000001946473e1 ** 0xh000000010e85e74f mod 0000000170754797 = 0x000000007761ed4f\n");
+ printf("Running TC4: 0x00000001946473e1 ** 0xh000000010e85e74f mod 0x0000000170754797 = 0x000000007761ed4f\n");
// Write operands and set associated lengths.
tc_w32(MODEXP_MESSAGE_PTR_RST, 0x00000000);
tc_w32(MODEXP_MESSAGE_DATA, 0x00000001);
tc_w32(MODEXP_MESSAGE_DATA, 0x946473e1);
tc_w32(MODEXP_LENGTH, 0x00000002);
-
+
tc_w32(MODEXP_EXPONENT_PTR_RST, 0x00000000);
tc_w32(MODEXP_EXPONENT_DATA, 0x00000001);
tc_w32(MODEXP_EXPONENT_DATA, 0x0e85e74f);
tc_w32(MODEXP_EXPONENT_LENGTH, 0x00000002);
-
+
tc_w32(MODEXP_MODULUS_PTR_RST, 0x00000000);
tc_w32(MODEXP_MODULUS_DATA, 0x00000001);
tc_w32(MODEXP_MODULUS_DATA, 0x70754797);
tc_w32(MODEXP_MODULUS_LENGTH, 0x00000002);
-
+
// Start processing and wait for ready.
tc_w32(MODEXP_ADDR_CTRL, 0x00000001);
check(tc_wait_ready(MODEXP_ADDR_STATUS));
-
- // Dump contents of result memory.
+
+ // Check result with expected value.
tc_w32(MODEXP_RESULT_PTR_RST, 0x00000000);
result0 = tc_r32(MODEXP_RESULT_DATA);
result1 = tc_r32(MODEXP_RESULT_DATA);
if ((result0 == 0x00000000) && (result1 == 0x7761ed4f))
printf("TC4: OK\n");
else
- printf("TC4: Error. Expected 0x000000007761ed4f, got 0x%08x%08x\n",
+ printf("TC4: Error. Expected 0x000000007761ed4f, got 0x%08x%08x\n",
result0, result1);
}
//------------------------------------------------------------------
+// main()
//------------------------------------------------------------------
-int main(int argc, char *argv[])
+int main(void)
{
check_modexp_access();
-
tc_set_debug(1);
// check_modulus_mem();
// check_exponent_mem();
// check_message_mem();
-// tc1();
-// tc2();
+ tc1();
+ tc2();
tc3();
-// tc4();
+ tc4();
return 0;
}
//======================================================================
-// EOF aes_tester.c
+// EOF modexp_tester.c
//======================================================================
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 12:02:06 +0000