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-rw-r--r--tests/test-rsa.c66
1 files changed, 64 insertions, 2 deletions
diff --git a/tests/test-rsa.c b/tests/test-rsa.c
index 150c6eb..51e1009 100644
--- a/tests/test-rsa.c
+++ b/tests/test-rsa.c
@@ -44,6 +44,8 @@
#include <string.h>
#include <assert.h>
+#include <sys/time.h>
+
#include "cryptech.h"
#include "test-rsa.h"
@@ -77,13 +79,73 @@ static int test_modexp(const char * const kind,
}
/*
+ * Run one RSA CRT test.
+ */
+
+static int test_crt(const char * const kind, const rsa_tc_t * const tc)
+{
+ uint8_t result[tc->n.len];
+
+ printf("%s test for %lu-bit RSA key\n", kind, (unsigned long) tc->size);
+
+ if (hal_rsa_crt(tc->m.val, tc->m.len,
+ tc->n.val, tc->n.len,
+ tc->e.val, tc->e.len,
+ tc->d.val, tc->d.len,
+ tc->p.val, tc->p.len,
+ tc->q.val, tc->q.len,
+ tc->u.val, tc->u.len,
+ result, sizeof(result)) != HAL_OK) {
+ printf("RSA CRT failed\n");
+ return 0;
+ }
+
+ if (memcmp(result, tc->s.val, tc->s.len)) {
+ printf("MISMATCH\n");
+ return 0;
+ }
+
+ printf("OK\n");
+ return 1;
+}
+
+
+#define time_check(_expr_) \
+ do { \
+ struct timeval _t1, _t2, _td; \
+ gettimeofday(&_t1, NULL); \
+ int _ok = (_expr_); \
+ gettimeofday(&_t2, NULL); \
+ _td.tv_sec = _t2.tv_sec - _t1.tv_sec; \
+ _td.tv_usec = _t2.tv_usec - _t1.tv_usec; \
+ if (_td.tv_usec < 0) { \
+ _td.tv_usec += 1000000; \
+ _td.tv_sec -= 1; \
+ } \
+ printf("%lu.%06lu %s\n", \
+ (unsigned long) _td.tv_sec, \
+ (unsigned long) _td.tv_usec, \
+ _ok ? "OK" : "FAILED"); \
+ if (!_ok) \
+ return 0; \
+ } while (0)
+
+/*
* Test signature and exponentiation for one RSA keypair.
*/
static int test_rsa(const rsa_tc_t * const tc)
{
- return (test_modexp("Signature", tc, &tc->m, &tc->d, &tc->s) && /* RSA decryption */
- test_modexp("Verification", tc, &tc->s, &tc->e, &tc->m)); /* RSA encryption */
+ /* RSA encryption */
+ time_check(test_modexp("Verification", tc, &tc->s, &tc->e, &tc->m));
+
+ /* Brute force RSA decryption */
+ time_check(test_modexp("Signature (ModExp)", tc, &tc->m, &tc->d, &tc->s));
+
+ /* RSA decyrption using CRT */
+ time_check(test_crt("Signature (CRT)", tc));
+
+ return 1;
}
int main(int argc, char *argv[])