#include "test.h"
#include <cry/dsa.h>

static cry_dsa_ctx dsa;
static cry_dsa_sig sig;

static const unsigned char sha[] = {
    0x97, 0x7f, 0x2b, 0x13, 0xa2, 0xc3, 0x46, 0x38,
    0x23, 0x35, 0x95, 0x6e, 0xa6, 0xc7, 0x5a, 0xf1,
    0xd0, 0x13, 0xad, 0xb4, 0x07, 0xa2, 0xa3, 0x30,
    0x20, 0xa8, 0x5f, 0x18, 0x78, 0x9f, 0xa1, 0x43,
};

static void keygen(unsigned int l)
{
    ASSERT_OK(cry_dsa_keygen(&dsa, l));

    ASSERT_OK(cry_dsa_sign(&dsa, &sig, sha, sizeof(sha)));
    ASSERT_OK(cry_dsa_verify(&dsa, &sig, sha, sizeof(sha)));
}

static void keygen_512(void)
{
    keygen(0);
}

static void keygen_768(void)
{
#ifndef SKIP_SLOW
    keygen(4);
#else
    TRACE2("      (skip)\n");
#endif
}

static void keygen_1024(void)
{
#ifndef SKIP_SLOW
    keygen(8);
#else
    TRACE2("      (skip)\n");
#endif
}

static const unsigned char pvt[] = {
    0x53, 0x61, 0xae, 0x4f, 0x6f, 0x25, 0x98, 0xde,
    0xc4, 0xbf, 0x0b, 0xbe, 0x09, 0x5f, 0xdf, 0x90,
    0x2f, 0x4c, 0x8e, 0x09
};

static const unsigned char pub[] = {
    0x1b, 0x91, 0x4c, 0xa9, 0x73, 0xdc, 0x06, 0x0d,
    0x21, 0xc6, 0xff, 0xab, 0xf6, 0xad, 0xf4, 0x11,
    0x97, 0xaf, 0x23, 0x48, 0x50, 0xa8, 0xf3, 0xdb,
    0x2e, 0xe6, 0x27, 0x8c, 0x40, 0x4c, 0xb3, 0xc8,
    0xfe, 0x79, 0x7e, 0x89, 0x48, 0x90, 0x27, 0x92,
    0x6f, 0x5b, 0xc5, 0xe6, 0x8f, 0x91, 0x4c, 0xe9,
    0x4f, 0xed, 0x0d, 0x3c, 0x17, 0x09, 0xeb, 0x97,
    0xac, 0x29, 0x77, 0xd5, 0x19, 0xe7, 0x4d, 0x17
};

static const unsigned char P[] = {
    0x00, 0x9c, 0x4c, 0xaa, 0x76, 0x31, 0x2e, 0x71,
    0x4d, 0x31, 0xd6, 0xe4, 0xd7, 0xe9, 0xa7, 0x29,
    0x7b, 0x7f, 0x05, 0xee, 0xfd, 0xca, 0x35, 0x14,
    0x1e, 0x9f, 0xe5, 0xc0, 0x2a, 0xe0, 0x12, 0xd9,
    0xc4, 0xc0, 0xde, 0xcc, 0x66, 0x96, 0x2f, 0xf1,
    0x8f, 0x1a, 0xe1, 0xe8, 0xbf, 0xc2, 0x29, 0x0d,
    0x27, 0x07, 0x48, 0xb9, 0x71, 0x04, 0xec, 0xc7,
    0xf4, 0x16, 0x2e, 0x50, 0x8d, 0x67, 0x14, 0x84,
    0x7b
};

static const unsigned char Q[] = {
    0x00, 0xac, 0x6f, 0xc1, 0x37, 0xef, 0x16, 0x74,
    0x52, 0x6a, 0xeb, 0xc5, 0xf8, 0xf2, 0x1f, 0x53,
    0xf4, 0x0f, 0xe0, 0x51, 0x5f
};

static const unsigned char G[] = {
    0x7d, 0xcd, 0x66, 0x81, 0x61, 0x52, 0x21, 0x10,
    0xf7, 0xa0, 0x83, 0x4c, 0x5f, 0xc8, 0x84, 0xca,
    0xe8, 0x8a, 0x9b, 0x9f, 0x19, 0x14, 0x8c, 0x7d,
    0xd0, 0xee, 0x33, 0xce, 0xb4, 0x57, 0x2d, 0x5e,
    0x78, 0x3f, 0x06, 0xd7, 0xb3, 0xd6, 0x40, 0x70,
    0x2e, 0xb6, 0x12, 0x3f, 0x4a, 0x61, 0x38, 0xae,
    0x72, 0x12, 0xfb, 0x77, 0xde, 0x53, 0xb3, 0xa1,
    0x99, 0xd8, 0xa8, 0x19, 0x96, 0xf7, 0x7f, 0x99
};

static void sign_verify(void)
{
    ASSERT_OK(cry_mpi_load_bin(&dsa.g, G, sizeof(G)));
    ASSERT_OK(cry_mpi_load_bin(&dsa.p, P, sizeof(P)));
    ASSERT_OK(cry_mpi_load_bin(&dsa.q, Q, sizeof(Q)));
    ASSERT_OK(cry_mpi_load_bin(&dsa.pvt, pvt, sizeof(pvt)));
    ASSERT_OK(cry_mpi_load_bin(&dsa.pub, pub, sizeof(pub)));

    ASSERT_OK(cry_dsa_sign(&dsa, &sig, sha, sizeof(sha)));
    ASSERT_OK(cry_dsa_verify(&dsa, &sig, sha, sizeof(sha)));
}

static void setup(void)
{
    cry_dsa_init(&dsa);
    cry_mpi_init_list(&sig.r, &sig.s, NULL);
}

static void teardown(void)
{
    cry_dsa_clear(&dsa);
    cry_mpi_clear_list(&sig.r, &sig.s, NULL);
}

#define MYRUN(name, test) run(name, test, setup, teardown)

void dsa_test(void)
{
    TRACE("* DSA\n");
    MYRUN("Keygen 512", keygen_512);
    MYRUN("Keygen 768", keygen_768);
    MYRUN("Keygen 1024", keygen_1024);
    MYRUN("Sign and verify", sign_verify);
    TRACE("\n");
}