/*      $OpenBSD: test_sshkey.c,v 1.33 2026/03/06 06:57:33 dtucker Exp $ */
/*
 * Regress test for sshkey.h key management API
 *
 * Placed in the public domain
 */

#include <sys/types.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>

#include <openssl/bn.h>
#include <openssl/ec.h>
#include <openssl/rsa.h>

#include "test_helper.h"

#include "ssherr.h"
#include "sshbuf.h"
#define SSHBUF_INTERNAL 1       /* access internals for testing */
#include "sshkey.h"

#include "authfile.h"
#include "common.h"
#include "ssh2.h"

void sshkey_tests(void);
void sshkey_benchmarks(void);

static void
put_opt(struct sshbuf *b, const char *name, const char *value)
{
        struct sshbuf *sect;

        sect = sshbuf_new();
        ASSERT_PTR_NE(sect, NULL);
        ASSERT_INT_EQ(sshbuf_put_cstring(b, name), 0);
        if (value != NULL)
                ASSERT_INT_EQ(sshbuf_put_cstring(sect, value), 0);
        ASSERT_INT_EQ(sshbuf_put_stringb(b, sect), 0);
        sshbuf_free(sect);
}

static void
build_cert(struct sshbuf *b, struct sshkey *k, const char *type,
    struct sshkey *sign_key, struct sshkey *ca_key,
    const char *sig_alg)
{
        struct sshbuf *ca_buf, *pk, *principals, *critopts, *exts;
        u_char *sigblob;
        size_t siglen;

        ca_buf = sshbuf_new();
        ASSERT_PTR_NE(ca_buf, NULL);
        ASSERT_INT_EQ(sshkey_putb(ca_key, ca_buf), 0);

        /*
         * Get the public key serialisation by rendering the key and skipping
         * the type string. This is a bit of a hack :/
         */
        pk = sshbuf_new();
        ASSERT_PTR_NE(pk, NULL);
        ASSERT_INT_EQ(sshkey_putb_plain(k, pk), 0);
        ASSERT_INT_EQ(sshbuf_skip_string(pk), 0);

        principals = sshbuf_new();
        ASSERT_PTR_NE(principals, NULL);
        ASSERT_INT_EQ(sshbuf_put_cstring(principals, "gsamsa"), 0);
        ASSERT_INT_EQ(sshbuf_put_cstring(principals, "gregor"), 0);

        critopts = sshbuf_new();
        ASSERT_PTR_NE(critopts, NULL);
        put_opt(critopts, "force-command", "/usr/local/bin/nethack");
        put_opt(critopts, "source-address", "192.168.0.0/24,127.0.0.1,::1");

        exts = sshbuf_new();
        ASSERT_PTR_NE(exts, NULL);
        put_opt(critopts, "permit-X11-forwarding", NULL);

        ASSERT_INT_EQ(sshbuf_put_cstring(b, type), 0);
        ASSERT_INT_EQ(sshbuf_put_cstring(b, "noncenoncenonce!"), 0); /* nonce */
        ASSERT_INT_EQ(sshbuf_putb(b, pk), 0); /* public key serialisation */
        ASSERT_INT_EQ(sshbuf_put_u64(b, 1234), 0); /* serial */
        ASSERT_INT_EQ(sshbuf_put_u32(b, SSH2_CERT_TYPE_USER), 0); /* type */
        ASSERT_INT_EQ(sshbuf_put_cstring(b, "gregor"), 0); /* key ID */
        ASSERT_INT_EQ(sshbuf_put_stringb(b, principals), 0); /* principals */
        ASSERT_INT_EQ(sshbuf_put_u64(b, 0), 0); /* start */
        ASSERT_INT_EQ(sshbuf_put_u64(b, 0xffffffffffffffffULL), 0); /* end */
        ASSERT_INT_EQ(sshbuf_put_stringb(b, critopts), 0); /* options */
        ASSERT_INT_EQ(sshbuf_put_stringb(b, exts), 0); /* extensions */
        ASSERT_INT_EQ(sshbuf_put_string(b, NULL, 0), 0); /* reserved */
        ASSERT_INT_EQ(sshbuf_put_stringb(b, ca_buf), 0); /* signature key */
        ASSERT_INT_EQ(sshkey_sign(sign_key, &sigblob, &siglen,
            sshbuf_ptr(b), sshbuf_len(b), sig_alg, NULL, NULL, 0), 0);
        ASSERT_INT_EQ(sshbuf_put_string(b, sigblob, siglen), 0); /* signature */

        free(sigblob);
        sshbuf_free(ca_buf);
        sshbuf_free(exts);
        sshbuf_free(critopts);
        sshbuf_free(principals);
        sshbuf_free(pk);
}

static void
signature_test(struct sshkey *k, struct sshkey *bad, const char *sig_alg,
    const u_char *d, size_t l)
{
        size_t len;
        u_char *sig;

        ASSERT_INT_EQ(sshkey_sign(k, &sig, &len, d, l, sig_alg,
            NULL, NULL, 0), 0);
        ASSERT_SIZE_T_GT(len, 8);
        ASSERT_PTR_NE(sig, NULL);
        ASSERT_INT_EQ(sshkey_verify(k, sig, len, d, l, NULL, 0, NULL), 0);
        ASSERT_INT_NE(sshkey_verify(bad, sig, len, d, l, NULL, 0, NULL), 0);
        /* Fuzz test is more comprehensive, this is just a smoke test */
        sig[len - 5] ^= 0x10;
        ASSERT_INT_NE(sshkey_verify(k, sig, len, d, l, NULL, 0, NULL), 0);
        free(sig);
}

static void
signature_bench(const char *name, int ktype, int bits, const char *sig_alg,
    const u_char *d, size_t l)
{
        struct sshkey *k;
        size_t len;
        u_char *sig;
        char testname[256];

        snprintf(testname, sizeof(testname), "sign %s", name);
        TEST_START(testname);
        ASSERT_INT_EQ(sshkey_generate(ktype, bits, &k), 0);
        ASSERT_PTR_NE(k, NULL);

        BENCH_START(testname);
        ASSERT_INT_EQ(sshkey_sign(k, &sig, &len, d, l, sig_alg,
            NULL, NULL, 0), 0);
        free(sig);
        BENCH_FINISH("sign");

        sshkey_free(k);
        TEST_DONE();
}

static void
verify_bench(const char *name, int ktype, int bits, const char *sig_alg,
    const u_char *d, size_t l)
{
        struct sshkey *k;
        size_t len;
        u_char *sig;
        char testname[256];

        snprintf(testname, sizeof(testname), "verify %s", name);
        TEST_START(testname);
        ASSERT_INT_EQ(sshkey_generate(ktype, bits, &k), 0);
        ASSERT_PTR_NE(k, NULL);

        ASSERT_INT_EQ(sshkey_sign(k, &sig, &len, d, l, sig_alg,
            NULL, NULL, 0), 0);
        BENCH_START(testname);
        ASSERT_INT_EQ(sshkey_verify(k, sig, len, d, l, NULL, 0, NULL), 0);
        BENCH_FINISH("verify");

        free(sig);
        sshkey_free(k);
        TEST_DONE();
}

static void
banana(u_char *s, size_t l)
{
        size_t o;
        const u_char the_banana[] = { 'b', 'a', 'n', 'a', 'n', 'a' };

        for (o = 0; o < l; o += sizeof(the_banana)) {
                if (l - o < sizeof(the_banana)) {
                        memcpy(s + o, "nanananana", l - o);
                        break;
                }
                memcpy(s + o, the_banana, sizeof(the_banana));
        }
}

static void
signature_tests(struct sshkey *k, struct sshkey *bad, const char *sig_alg)
{
        u_char i, buf[2049];
        size_t lens[] = {
                1, 2, 7, 8, 9, 15, 16, 17, 31, 32, 33, 127, 128, 129,
                255, 256, 257, 1023, 1024, 1025, 2047, 2048, 2049
        };

        for (i = 0; i < (sizeof(lens)/sizeof(lens[0])); i++) {
                test_subtest_info("%s key, banana length %zu",
                    sshkey_type(k), lens[i]);
                banana(buf, lens[i]);
                signature_test(k, bad, sig_alg, buf, lens[i]);
        }
}

static void
signature_benchmark(const char *name, int ktype, int bits,
    const char *sig_alg, int bench_verify)
{
        u_char buf[256];

        banana(buf, sizeof(buf));
        if (bench_verify)
                verify_bench(name, ktype, bits, sig_alg, buf, sizeof(buf));
        else
                signature_bench(name, ktype, bits, sig_alg, buf, sizeof(buf));
}

static struct sshkey *
get_private(const char *n)
{
        struct sshbuf *b;
        struct sshkey *ret;

        b = load_file(n);
        ASSERT_INT_EQ(sshkey_parse_private_fileblob(b, "", &ret, NULL), 0);
        sshbuf_free(b);
        return ret;
}

void
sshkey_tests(void)
{
        struct sshkey *k1 = NULL, *k2 = NULL, *k3 = NULL, *k4 = NULL;
        struct sshkey *kr = NULL, *kd = NULL, *ke = NULL, *kf = NULL;
        struct sshbuf *b = NULL;

        TEST_START("new invalid");
        k1 = sshkey_new(-42);
        ASSERT_PTR_EQ(k1, NULL);
        TEST_DONE();

        TEST_START("new/free KEY_UNSPEC");
        k1 = sshkey_new(KEY_UNSPEC);
        ASSERT_PTR_NE(k1, NULL);
        sshkey_free(k1);
        k1 = NULL;
        TEST_DONE();

        TEST_START("new/free KEY_RSA");
        k1 = sshkey_new(KEY_RSA);
        ASSERT_PTR_NE(k1, NULL);
        ASSERT_PTR_NE(k1->pkey, NULL);
        sshkey_free(k1);
        k1 = NULL;
        TEST_DONE();

        TEST_START("new/free KEY_ECDSA");
        k1 = sshkey_new(KEY_ECDSA);
        ASSERT_PTR_NE(k1, NULL);
        ASSERT_PTR_EQ(k1->pkey, NULL);  /* Can't allocate without NID */
        sshkey_free(k1);
        k1 = NULL;
        TEST_DONE();

        TEST_START("new/free KEY_ED25519");
        k1 = sshkey_new(KEY_ED25519);
        ASSERT_PTR_NE(k1, NULL);
        /* These should be blank until key loaded or generated */
        ASSERT_PTR_EQ(k1->ed25519_sk, NULL);
        ASSERT_PTR_EQ(k1->ed25519_pk, NULL);
        sshkey_free(k1);
        k1 = NULL;
        TEST_DONE();

        TEST_START("generate KEY_RSA too small modulus");
        ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 128, &k1),
            SSH_ERR_KEY_LENGTH);
        ASSERT_PTR_EQ(k1, NULL);
        TEST_DONE();

        TEST_START("generate KEY_RSA too large modulus");
        ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1 << 20, &k1),
            SSH_ERR_KEY_LENGTH);
        ASSERT_PTR_EQ(k1, NULL);
        TEST_DONE();


        TEST_START("generate KEY_ECDSA wrong bits");
        ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 42, &k1),
            SSH_ERR_KEY_LENGTH);
        ASSERT_PTR_EQ(k1, NULL);
        sshkey_free(k1);
        k1 = NULL;
        TEST_DONE();

        TEST_START("generate KEY_RSA");
        ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 767, &kr),
            SSH_ERR_KEY_LENGTH);
        ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1024, &kr), 0);
        ASSERT_PTR_NE(kr, NULL);
        ASSERT_PTR_NE(EVP_PKEY_get0_RSA(kr->pkey), NULL);
        ASSERT_PTR_NE(rsa_n(kr), NULL);
        ASSERT_PTR_NE(rsa_e(kr), NULL);
        ASSERT_PTR_NE(rsa_p(kr), NULL);
        ASSERT_INT_EQ(BN_num_bits(rsa_n(kr)), 1024);
        TEST_DONE();


        TEST_START("generate KEY_ECDSA");
        ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &ke), 0);
        ASSERT_PTR_NE(ke, NULL);
        ASSERT_PTR_NE(EVP_PKEY_get0_EC_KEY(ke->pkey), NULL);
        ASSERT_PTR_NE(EC_KEY_get0_public_key(EVP_PKEY_get0_EC_KEY(ke->pkey)),
            NULL);
        ASSERT_PTR_NE(EC_KEY_get0_private_key(EVP_PKEY_get0_EC_KEY(ke->pkey)),
            NULL);
        TEST_DONE();

        TEST_START("generate KEY_ED25519");
        ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &kf), 0);
        ASSERT_PTR_NE(kf, NULL);
        ASSERT_INT_EQ(kf->type, KEY_ED25519);
        ASSERT_PTR_NE(kf->ed25519_pk, NULL);
        ASSERT_PTR_NE(kf->ed25519_sk, NULL);
        TEST_DONE();

        TEST_START("demote KEY_RSA");
        ASSERT_INT_EQ(sshkey_from_private(kr, &k1), 0);
        ASSERT_PTR_NE(k1, NULL);
        ASSERT_PTR_NE(kr, k1);
        ASSERT_INT_EQ(k1->type, KEY_RSA);
        ASSERT_PTR_NE(EVP_PKEY_get0_RSA(k1->pkey), NULL);
        ASSERT_PTR_NE(rsa_n(k1), NULL);
        ASSERT_PTR_NE(rsa_e(k1), NULL);
        ASSERT_PTR_EQ(rsa_p(k1), NULL);
        TEST_DONE();

        TEST_START("equal KEY_RSA/demoted KEY_RSA");
        ASSERT_INT_EQ(sshkey_equal(kr, k1), 1);
        sshkey_free(k1);
        k1 = NULL;
        TEST_DONE();


        TEST_START("demote KEY_ECDSA");
        ASSERT_INT_EQ(sshkey_from_private(ke, &k1), 0);
        ASSERT_PTR_NE(k1, NULL);
        ASSERT_PTR_NE(ke, k1);
        ASSERT_INT_EQ(k1->type, KEY_ECDSA);
        ASSERT_PTR_NE(EVP_PKEY_get0_EC_KEY(k1->pkey), NULL);
        ASSERT_INT_EQ(k1->ecdsa_nid, ke->ecdsa_nid);
        ASSERT_PTR_NE(EC_KEY_get0_public_key(EVP_PKEY_get0_EC_KEY(ke->pkey)),
           NULL);
        ASSERT_PTR_EQ(EC_KEY_get0_private_key(EVP_PKEY_get0_EC_KEY(k1->pkey)),
           NULL);
        TEST_DONE();

        TEST_START("equal KEY_ECDSA/demoted KEY_ECDSA");
        ASSERT_INT_EQ(sshkey_equal(ke, k1), 1);
        sshkey_free(k1);
        k1 = NULL;
        TEST_DONE();

        TEST_START("demote KEY_ED25519");
        ASSERT_INT_EQ(sshkey_from_private(kf, &k1), 0);
        ASSERT_PTR_NE(k1, NULL);
        ASSERT_PTR_NE(kf, k1);
        ASSERT_INT_EQ(k1->type, KEY_ED25519);
        ASSERT_PTR_NE(k1->ed25519_pk, NULL);
        ASSERT_PTR_EQ(k1->ed25519_sk, NULL);
        TEST_DONE();

        TEST_START("equal KEY_ED25519/demoted KEY_ED25519");
        ASSERT_INT_EQ(sshkey_equal(kf, k1), 1);
        sshkey_free(k1);
        k1 = NULL;
        TEST_DONE();

        TEST_START("equal mismatched key types");
        ASSERT_INT_EQ(sshkey_equal(kd, kr), 0);
        ASSERT_INT_EQ(sshkey_equal(kd, ke), 0);
        ASSERT_INT_EQ(sshkey_equal(kr, ke), 0);
        ASSERT_INT_EQ(sshkey_equal(ke, kf), 0);
        ASSERT_INT_EQ(sshkey_equal(kd, kf), 0);
        TEST_DONE();

        TEST_START("equal different keys");
        ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1024, &k1), 0);
        ASSERT_INT_EQ(sshkey_equal(kr, k1), 0);
        sshkey_free(k1);
        k1 = NULL;
        ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &k1), 0);
        ASSERT_INT_EQ(sshkey_equal(ke, k1), 0);
        sshkey_free(k1);
        k1 = NULL;
        ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &k1), 0);
        ASSERT_INT_EQ(sshkey_equal(kf, k1), 0);
        sshkey_free(k1);
        k1 = NULL;
        TEST_DONE();

        sshkey_free(kr);
        sshkey_free(kd);
        sshkey_free(ke);
        sshkey_free(kf);
        kr = kd = ke = kf = NULL;

        TEST_START("certify key");
        ASSERT_INT_EQ(sshkey_load_public(test_data_file("ed25519_1.pub"),
            &k1, NULL), 0);
        k2 = get_private("ed25519_2");
        ASSERT_INT_EQ(sshkey_to_certified(k1), 0);
        ASSERT_PTR_NE(k1->cert, NULL);
        k1->cert->type = SSH2_CERT_TYPE_USER;
        k1->cert->serial = 1234;
        k1->cert->key_id = strdup("estragon");
        ASSERT_PTR_NE(k1->cert->key_id, NULL);
        k1->cert->principals = calloc(4, sizeof(*k1->cert->principals));
        ASSERT_PTR_NE(k1->cert->principals, NULL);
        k1->cert->principals[0] = strdup("estragon");
        k1->cert->principals[1] = strdup("vladimir");
        k1->cert->principals[2] = strdup("pozzo");
        k1->cert->principals[3] = strdup("lucky");
        ASSERT_PTR_NE(k1->cert->principals[0], NULL);
        ASSERT_PTR_NE(k1->cert->principals[1], NULL);
        ASSERT_PTR_NE(k1->cert->principals[2], NULL);
        ASSERT_PTR_NE(k1->cert->principals[3], NULL);
        k1->cert->nprincipals = 4;
        k1->cert->valid_after = 0;
        k1->cert->valid_before = (uint64_t)-1;
        sshbuf_free(k1->cert->critical);
        k1->cert->critical = sshbuf_new();
        ASSERT_PTR_NE(k1->cert->critical, NULL);
        sshbuf_free(k1->cert->extensions);
        k1->cert->extensions = sshbuf_new();
        ASSERT_PTR_NE(k1->cert->extensions, NULL);
        put_opt(k1->cert->critical, "force-command", "/usr/bin/true");
        put_opt(k1->cert->critical, "source-address", "127.0.0.1");
        put_opt(k1->cert->extensions, "permit-X11-forwarding", NULL);
        put_opt(k1->cert->extensions, "permit-agent-forwarding", NULL);
        ASSERT_INT_EQ(sshkey_from_private(k2, &k1->cert->signature_key), 0);
        ASSERT_INT_EQ(sshkey_certify(k1, k2, NULL, NULL, NULL), 0);
        b = sshbuf_new();
        ASSERT_PTR_NE(b, NULL);
        ASSERT_INT_EQ(sshkey_putb(k1, b), 0);
        ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(b), sshbuf_len(b), &k3), 0);

        sshkey_free(k1);
        sshkey_free(k2);
        sshkey_free(k3);
        k1 = k2 = k3 = NULL;
        sshbuf_reset(b);
        TEST_DONE();

        TEST_START("sign and verify RSA");
        k1 = get_private("rsa_1");
        ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2,
            NULL), 0);
        signature_tests(k1, k2, "ssh-rsa");
        sshkey_free(k1);
        sshkey_free(k2);
        k1 = k2 = NULL;
        TEST_DONE();

        TEST_START("sign and verify RSA-SHA256");
        k1 = get_private("rsa_1");
        ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2,
            NULL), 0);
        signature_tests(k1, k2, "rsa-sha2-256");
        sshkey_free(k1);
        sshkey_free(k2);
        k1 = k2 = NULL;
        TEST_DONE();

        TEST_START("sign and verify RSA-SHA512");
        k1 = get_private("rsa_1");
        ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2,
            NULL), 0);
        signature_tests(k1, k2, "rsa-sha2-512");
        sshkey_free(k1);
        sshkey_free(k2);
        k1 = k2 = NULL;
        TEST_DONE();


        TEST_START("sign and verify ECDSA");
        k1 = get_private("ecdsa_1");
        ASSERT_INT_EQ(sshkey_load_public(test_data_file("ecdsa_2.pub"), &k2,
            NULL), 0);
        signature_tests(k1, k2, NULL);
        sshkey_free(k1);
        sshkey_free(k2);
        k1 = k2 = NULL;
        TEST_DONE();

        TEST_START("sign and verify ED25519");
        k1 = get_private("ed25519_1");
        ASSERT_INT_EQ(sshkey_load_public(test_data_file("ed25519_2.pub"), &k2,
            NULL), 0);
        signature_tests(k1, k2, NULL);
        sshkey_free(k1);
        sshkey_free(k2);
        k1 = k2 = NULL;
        TEST_DONE();

        TEST_START("nested certificate");
        ASSERT_INT_EQ(sshkey_load_cert(test_data_file("rsa_1"), &k1), 0);
        ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_1.pub"), &k2,
            NULL), 0);
        k3 = get_private("rsa_1");
        build_cert(b, k2, "ssh-rsa-cert-v01@openssh.com", k3, k1, NULL);
        ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(b), sshbuf_len(b), &k4),
            SSH_ERR_KEY_CERT_INVALID_SIGN_KEY);
        ASSERT_PTR_EQ(k4, NULL);
        sshkey_free(k1);
        sshkey_free(k2);
        sshkey_free(k3);
        k1 = k2 = k3 = NULL;
        sshbuf_free(b);
        TEST_DONE();

}

void
sshkey_benchmarks(void)
{
        struct sshkey *k = NULL;

#ifdef WITH_OPENSSL
        BENCH_START("generate RSA-1024");
        TEST_START("generate KEY_RSA");
        ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1024, &k), 0);
        ASSERT_PTR_NE(k, NULL);
        sshkey_free(k);
        k = NULL;
        TEST_DONE();
        BENCH_FINISH("keys");

        BENCH_START("generate RSA-2048");
        TEST_START("generate KEY_RSA");
        ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 2048, &k), 0);
        ASSERT_PTR_NE(k, NULL);
        sshkey_free(k);
        k = NULL;
        TEST_DONE();
        BENCH_FINISH("keys");

        BENCH_START("generate ECDSA-256");
        TEST_START("generate KEY_ECDSA");
        ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &k), 0);
        ASSERT_PTR_NE(k, NULL);
        sshkey_free(k);
        k = NULL;
        TEST_DONE();
        BENCH_FINISH("keys");

        BENCH_START("generate ECDSA-384");
        TEST_START("generate KEY_ECDSA");
        ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 384, &k), 0);
        ASSERT_PTR_NE(k, NULL);
        sshkey_free(k);
        k = NULL;
        TEST_DONE();
        BENCH_FINISH("keys");

        BENCH_START("generate ECDSA-521");
        TEST_START("generate KEY_ECDSA");
        ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 521, &k), 0);
        ASSERT_PTR_NE(k, NULL);
        sshkey_free(k);
        k = NULL;
        TEST_DONE();
        BENCH_FINISH("keys");
#endif /* WITH_OPENSSL */

        BENCH_START("generate ED25519");
        TEST_START("generate KEY_ED25519");
        ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &k), 0);
        ASSERT_PTR_NE(k, NULL);
        sshkey_free(k);
        k = NULL;
        TEST_DONE();
        BENCH_FINISH("keys");

#ifdef WITH_OPENSSL
        /* sign */
        signature_benchmark("RSA-1024/SHA1", KEY_RSA, 1024, "ssh-rsa", 0);
        signature_benchmark("RSA-1024/SHA256", KEY_RSA, 1024, "rsa-sha2-256", 0);
        signature_benchmark("RSA-1024/SHA512", KEY_RSA, 1024, "rsa-sha2-512", 0);
        signature_benchmark("RSA-2048/SHA1", KEY_RSA, 2048, "ssh-rsa", 0);
        signature_benchmark("RSA-2048/SHA256", KEY_RSA, 2048, "rsa-sha2-256", 0);
        signature_benchmark("RSA-2048/SHA512", KEY_RSA, 2048, "rsa-sha2-512", 0);
        signature_benchmark("ECDSA-256", KEY_ECDSA, 256, NULL, 0);
        signature_benchmark("ECDSA-384", KEY_ECDSA, 384, NULL, 0);
        signature_benchmark("ECDSA-521", KEY_ECDSA, 521, NULL, 0);
        signature_benchmark("ED25519", KEY_ED25519, 0, NULL, 0);

        /* verify */
        signature_benchmark("RSA-1024/SHA1", KEY_RSA, 1024, "ssh-rsa", 1);
        signature_benchmark("RSA-1024/SHA256", KEY_RSA, 1024, "rsa-sha2-256", 1);
        signature_benchmark("RSA-1024/SHA512", KEY_RSA, 1024, "rsa-sha2-512", 1);
        signature_benchmark("RSA-2048/SHA1", KEY_RSA, 2048, "ssh-rsa", 1);
        signature_benchmark("RSA-2048/SHA256", KEY_RSA, 2048, "rsa-sha2-256", 1);
        signature_benchmark("RSA-2048/SHA512", KEY_RSA, 2048, "rsa-sha2-512", 1);
        signature_benchmark("ECDSA-256", KEY_ECDSA, 256, NULL, 1);
        signature_benchmark("ECDSA-384", KEY_ECDSA, 384, NULL, 1);
        signature_benchmark("ECDSA-521", KEY_ECDSA, 521, NULL, 1);
#endif /* WITH_OPENSSL */
        signature_benchmark("ED25519", KEY_ED25519, 0, NULL, 1);
}