From 19e4248ef467e07509686d06fa1650ece17d1770 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Wed, 9 Oct 2002 09:37:35 +0200
Subject: [PATCH] (test_dsa): New function.
Rev: src/nettle/testsuite/testutils.c:1.14
Rev: src/nettle/testsuite/testutils.h:1.12
---
testsuite/testutils.c | 60 +++++++++++++++++++++++++++++++++++++++++++
testsuite/testutils.h | 4 +++
2 files changed, 64 insertions(+)
diff --git a/testsuite/testutils.c b/testsuite/testutils.c
index a954a374..8b96771f 100644
--- a/testsuite/testutils.c
+++ b/testsuite/testutils.c
@@ -3,6 +3,7 @@
#include "testutils.h"
#include "cbc.h"
+#include "knuth-lfib.h"
#include <ctype.h>
#include <stdio.h>
@@ -376,6 +377,9 @@ test_rsa_sha1(struct rsa_public_key *pub,
mpz_clear(signature);
}
+#undef SIGN
+#undef VERIFY
+
void
test_rsa_key(struct rsa_public_key *pub,
struct rsa_private_key *key)
@@ -446,5 +450,61 @@ test_rsa_key(struct rsa_public_key *pub,
mpz_clear(tmp); mpz_clear(phi);
}
+
+#define DSA_VERIFY(key, hash, msg, signature) ( \
+ sha1_update(hash, LDATA(msg)), \
+ dsa_verify(key, hash, signature) \
+)
+
+void
+test_dsa(struct dsa_private_key *key)
+{
+ struct sha1_ctx sha1;
+ struct dsa_signature signature;
+ struct knuth_lfib_ctx lfib;
+
+ sha1_init(&sha1);
+ dsa_signature_init(&signature);
+ knuth_lfib_init(&lfib, 1111);
+
+ sha1_update(&sha1, LDATA("The magic words are squeamish ossifrage"));
+ dsa_sign(key,
+ &lfib, (nettle_random_func) knuth_lfib_random,
+ &sha1, &signature);
+
+ if (verbose)
+ {
+ fprintf(stderr, "dsa signature: ");
+ mpz_out_str(stderr, 16, signature.r);
+ fprintf(stderr, ", ");
+ mpz_out_str(stderr, 16, signature.s);
+ fprintf(stderr, "\n");
+ }
+
+#if 0
+ if (mpz_cmp(signature, expected))
+ FAIL();
+#endif
+
+ /* Try bad data */
+ if (DSA_VERIFY(&key->pub, &sha1,
+ "The magick words are squeamish ossifrage", &signature))
+ FAIL();
+
+ /* Try correct data */
+ if (!DSA_VERIFY(&key->pub, &sha1,
+ "The magic words are squeamish ossifrage", &signature))
+ FAIL();
+
+ /* Try bad signature */
+ mpz_togglebit(signature.r, 17);
+
+ if (DSA_VERIFY(&key->pub, &sha1,
+ "The magic words are squeamish ossifrage", &signature))
+ FAIL();
+
+ dsa_signature_clear(&signature);
+}
+
#endif /* WITH_PUBLIC_KEY */
diff --git a/testsuite/testutils.h b/testsuite/testutils.h
index d1f9f764..1bd50549 100644
--- a/testsuite/testutils.h
+++ b/testsuite/testutils.h
@@ -17,6 +17,7 @@
#if WITH_PUBLIC_KEY
# include "rsa.h"
+# include "dsa.h"
#endif
#include "nettle-meta.h"
@@ -86,6 +87,9 @@ void
test_rsa_key(struct rsa_public_key *pub,
struct rsa_private_key *key);
+void
+test_dsa(struct dsa_private_key *key);
+
#endif /* WITH_PUBLIC_KEY */
#define H2(d, s) decode_hex((d), (s))
--
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