X-Git-Url: https://git.siccegge.de//index.cgi?a=blobdiff_plain;f=tests%2FtestDIPE.cpp;h=4219ba46ec3f182ef9c178b34478f97628b21424;hb=d4e7cbce6db6c8a08ca82b12d9eeaa5a4f59fc3e;hp=c335d48e4fcc1baba98f9930d44f1b34b37e4124;hpb=8fef6fe05ce3e9c0f6d29bb318b90b72a71db51f;p=software%2FDIPE.git

diff --git a/tests/testDIPE.cpp b/tests/testDIPE.cpp
index c335d48..4219ba4 100644
--- a/tests/testDIPE.cpp
+++ b/tests/testDIPE.cpp
@@ -37,7 +37,7 @@ TEST(DipeTest, DipeKeygen) {
 	}
 }
 
-TEST(DipeTest, DipeDecryptFail) {
+TEST(DipeTest, DipeDecapFail) {
 	dipe_ctxt_t ctxt;
 	dipe_master_publickey_t pk;
 	dipe_master_secretkey_t msk;
@@ -58,8 +58,8 @@ TEST(DipeTest, DipeDecryptFail) {
 
 	element_random(ptxt);
 
-	dipe_encrypt(param, pk, y, ptxt, &ctxt);
-	dipe_decrypt(param, sk, "1234567890abcdef", y, ctxt, ptxtp);
+	dipe_encap(param, pk, y, ptxt, &ctxt);
+	dipe_decap(param, sk, "1234567890abcdef", y, ctxt, ptxtp);
 
 	EXPECT_NE(element_cmp(ptxt, ptxtp), 0);
 
@@ -76,7 +76,7 @@ TEST(DipeTest, DipeDecryptFail) {
 	dipe_free_ctxt(ctxt);
 }
 
-TEST(DipeTest, DipeDecryptSuccess) {
+TEST(DipeTest, DipeDecapTrivialSuccess) {
 	dipe_ctxt_t ctxt;
 	dipe_master_publickey_t pk;
 	dipe_master_secretkey_t msk;
@@ -97,8 +97,8 @@ TEST(DipeTest, DipeDecryptSuccess) {
 
 	element_random(ptxt);
 
-	dipe_encrypt(param, pk, y, ptxt, &ctxt);
-	dipe_decrypt(param, sk, "1234567890abcdef", y, ctxt, ptxtp);
+	dipe_encap(param, pk, y, ptxt, &ctxt);
+	dipe_decap(param, sk, "1234567890abcdef", y, ctxt, ptxtp);
 
 	EXPECT_EQ(element_cmp(ptxt, ptxtp), 0);
 
@@ -115,6 +115,118 @@ TEST(DipeTest, DipeDecryptSuccess) {
 	dipe_free_ctxt(ctxt);
 }
 
+TEST(DipeTest, DipeDecapSuccess) {
+	dipe_ctxt_t ctxt;
+	dipe_master_publickey_t pk;
+	dipe_master_secretkey_t msk;
+	dipe_secretkey_t sk;
+
+	element_t y[6];
+	element_t x[6];
+
+	for (size_t i = 0; i < 6; i+=2) {
+		element_init_Zr(y[i], *dipe_get_pairing(param));
+		element_init_Zr(x[i], *dipe_get_pairing(param));
+		element_init_Zr(y[i+1], *dipe_get_pairing(param));
+		element_init_Zr(x[i+1], *dipe_get_pairing(param));
+
+		element_set1(y[i]);
+		element_set1(x[i+1]);
+		element_random(y[i+1]);
+		element_neg(x[i], y[i+1]);
+	}
+
+	dipe_master_keygen(param, 6, &pk, &msk);
+	dipe_keygen(param, msk, "1234567890abcdef", y, &sk);
+
+	element_t ptxt, ptxtp;
+	element_init_GT(ptxt, *dipe_get_pairing(param));
+	element_init_GT(ptxtp, *dipe_get_pairing(param));
+
+	element_random(ptxt);
+
+	dipe_encap(param, pk, x, ptxt, &ctxt);
+
+	dipe_decap(param, sk, "1234567890abcdef", y, ctxt, ptxtp);
+	EXPECT_EQ(element_cmp(ptxt, ptxtp), 0);
+
+	/* non-matching CID */
+	dipe_decap(param, sk, "fedcba0987654321", y, ctxt, ptxtp);
+	EXPECT_NE(element_cmp(ptxt, ptxtp), 0);
+
+	/* inconsistent y value */
+	dipe_decap(param, sk, "1234567890abcdef", x, ctxt, ptxtp);
+	EXPECT_NE(element_cmp(ptxt, ptxtp), 0);
+
+	for (size_t i = 0; i < 6; ++i) {
+		element_clear(y[i]);
+		element_clear(x[i]);
+	}
+
+	element_clear(ptxt);
+	element_clear(ptxtp);
+
+	dipe_free_master_secretkey(msk);
+	dipe_free_master_publickey(pk);
+	dipe_free_secretkey(sk);
+	dipe_free_ctxt(ctxt);
+}
+
+TEST(DipeTest, DipeDecryptSuccessSmall) {
+	char ctxt[768];
+	char ptxt[768];
+	size_t ptxt_len;
+	size_t overhead;
+	dipe_master_publickey_t pk;
+	dipe_master_secretkey_t msk;
+	dipe_secretkey_t sk;
+
+	element_t y[6];
+	element_t x[6];
+
+	for (size_t i = 0; i < 6; i+=2) {
+		element_init_Zr(y[i], *dipe_get_pairing(param));
+		element_init_Zr(x[i], *dipe_get_pairing(param));
+		element_init_Zr(y[i+1], *dipe_get_pairing(param));
+		element_init_Zr(x[i+1], *dipe_get_pairing(param));
+
+		element_set1(y[i]);
+		element_set1(x[i+1]);
+		element_random(y[i+1]);
+		element_neg(x[i], y[i+1]);
+	}
+
+	dipe_master_keygen(param, 6, &pk, &msk);
+	dipe_keygen(param, msk, "1234567890abcdef", y, &sk);
+	overhead = dipe_ciphertext_overhead(param, 6);
+
+	for (size_t clen = overhead; clen < 768; ++clen) {
+		memset(ctxt, 0, 768);
+		memset(ptxt, 0, 768);
+		memcpy(ptxt, "test", 4);
+
+		dipe_encrypt(param, pk, x, 4, ptxt, clen, ctxt);
+		ptxt_len = dipe_decrypt(param, sk, "1234567890abcdef", y, clen, ctxt, ptxt);
+
+		if (clen >= overhead) {
+			ASSERT_EQ(ptxt_len, 4);
+			ASSERT_STREQ(ptxt, "test");
+		}
+		else {
+			ASSERT_EQ(ptxt_len, 0);
+		}
+	}
+	
+	for (size_t i = 0; i < 6; ++i) {
+		element_clear(y[i]);
+		element_clear(x[i]);
+	}
+
+	dipe_free_master_secretkey(msk);
+	dipe_free_master_publickey(pk);
+	dipe_free_secretkey(sk);
+}
+
 
 int main(int argc, char **argv) {
 	::testing::InitGoogleTest(&argc, argv);