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#include <mcl/ecdsa.h>
#include <cybozu/test.hpp>
#include <string.h>
template<class T, class Serializer, class Deserializer>
void serializeTest(const T& x, const Serializer& serialize, const Deserializer& deserialize)
{
char buf[128];
size_t n = serialize(buf, sizeof(buf), &x);
CYBOZU_TEST_ASSERT(n > 0);
T y;
size_t m = deserialize(&y, buf, n);
CYBOZU_TEST_EQUAL(m, n);
CYBOZU_TEST_ASSERT(memcmp(&x, &y, n) == 0);
}
CYBOZU_TEST_AUTO(ecdsa)
{
int ret;
ret = ecdsaInit();
CYBOZU_TEST_EQUAL(ret, 0);
ecdsaSecretKey sec;
ecdsaPublicKey pub;
ecdsaPrecomputedPublicKey *ppub;
ecdsaSignature sig;
const char *msg = "hello";
mclSize msgSize = strlen(msg);
ret = ecdsaSecretKeySetByCSPRNG(&sec);
CYBOZU_TEST_EQUAL(ret, 0);
serializeTest(sec, ecdsaSecretKeySerialize, ecdsaSecretKeyDeserialize);
ecdsaGetPublicKey(&pub, &sec);
serializeTest(pub, ecdsaPublicKeySerialize, ecdsaPublicKeyDeserialize);
ecdsaSign(&sig, &sec, msg, msgSize);
serializeTest(sig, ecdsaSignatureSerialize, ecdsaSignatureDeserialize);
CYBOZU_TEST_ASSERT(ecdsaVerify(&sig, &pub, msg, msgSize));
ppub = ecdsaPrecomputedPublicKeyCreate();
CYBOZU_TEST_ASSERT(ppub);
ret = ecdsaPrecomputedPublicKeyInit(ppub, &pub);
CYBOZU_TEST_EQUAL(ret, 0);
CYBOZU_TEST_ASSERT(ecdsaVerifyPrecomputed(&sig, ppub, msg, msgSize));
sig.d[0]++;
CYBOZU_TEST_ASSERT(!ecdsaVerify(&sig, &pub, msg, msgSize));
CYBOZU_TEST_ASSERT(!ecdsaVerifyPrecomputed(&sig, ppub, msg, msgSize));
ecdsaPrecomputedPublicKeyDestroy(ppub);
}
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