int
mm_answer_sesskey(int sock, struct sshbuf *m)
{
BIGNUM *p;
int r, rsafail;
/* Turn off permissions */
monitor_permit(mon_dispatch, MONITOR_REQ_SESSKEY, 0);
if ((p = BN_new()) == NULL)
fatal("%s: BN_new", __func__);
if ((r = sshbuf_get_bignum2(m, p)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
rsafail = ssh1_session_key(p);
sshbuf_reset(m);
if ((r = sshbuf_put_u32(m, rsafail)) != 0 ||
(r = sshbuf_put_bignum2(m, p)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
BN_clear_free(p);
mm_request_send(sock, MONITOR_ANS_SESSKEY, m);
/* Turn on permissions for sessid passing */
monitor_permit(mon_dispatch, MONITOR_REQ_SESSID, 1);
return (0);
}
int
buffer_get_bignum2_ret(Buffer *buffer, BIGNUM *value)
{
int ret;
if ((ret = sshbuf_get_bignum2(buffer, value)) != 0) {
error("%s: %s", __func__, ssh_err(ret));
return -1;
}
return 0;
}
int
mm_answer_rsa_keyallowed(int sock, struct sshbuf *m)
{
BIGNUM *client_n;
struct sshkey *key = NULL;
u_char *blob = NULL;
size_t blen = 0;
int r, allowed = 0;
debug3("%s entering", __func__);
auth_method = "rsa";
if (options.rsa_authentication && authctxt->valid) {
if ((client_n = BN_new()) == NULL)
fatal("%s: BN_new", __func__);
if ((r = sshbuf_get_bignum2(m, client_n)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
allowed = auth_rsa_key_allowed(authctxt->pw, client_n, &key);
BN_clear_free(client_n);
}
sshbuf_reset(m);
if ((r = sshbuf_put_u32(m, allowed)) != 0 ||
(r = sshbuf_put_u32(m, forced_command != NULL)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
/* clear temporarily storage (used by generate challenge) */
monitor_reset_key_state();
if (allowed && key != NULL) {
key->type = KEY_RSA; /* cheat for key_to_blob */
if ((r = sshkey_to_blob(key, &blob, &blen)) != 0)
fatal("%s: key_to_blob failed: %s",
__func__, ssh_err(r));
if ((r = sshbuf_put_string(m, blob, blen)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
/* Save temporarily for comparison in verify */
key_blob = blob;
key_bloblen = blen;
key_blobtype = MM_RSAUSERKEY;
}
if (key != NULL)
sshkey_free(key);
mm_request_send(sock, MONITOR_ANS_RSAKEYALLOWED, m);
monitor_permit(mon_dispatch, MONITOR_REQ_RSACHALLENGE, allowed);
monitor_permit(mon_dispatch, MONITOR_REQ_RSARESPONSE, 0);
return (0);
}
static void
attempt_parse_blob(u_char *blob, size_t len)
{
struct sshbuf *p1;
BIGNUM *bn;
#ifdef OPENSSL_HAS_NISTP256
EC_KEY *eck;
#endif
u_char *s;
size_t l;
u_int8_t u8;
u_int16_t u16;
u_int32_t u32;
u_int64_t u64;
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put(p1, blob, len), 0);
sshbuf_get_u8(p1, &u8);
sshbuf_get_u16(p1, &u16);
sshbuf_get_u32(p1, &u32);
sshbuf_get_u64(p1, &u64);
if (sshbuf_get_string(p1, &s, &l) == 0) {
bzero(s, l);
free(s);
}
bn = BN_new();
sshbuf_get_bignum1(p1, bn);
BN_clear_free(bn);
bn = BN_new();
sshbuf_get_bignum2(p1, bn);
BN_clear_free(bn);
#ifdef OPENSSL_HAS_NISTP256
eck = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
ASSERT_PTR_NE(eck, NULL);
sshbuf_get_eckey(p1, eck);
EC_KEY_free(eck);
#endif
sshbuf_free(p1);
}
/* ARGSUSED */
int
ssh_ecdsa_verify(const struct sshkey *key,
const u_char *signature, size_t signaturelen,
const u_char *data, size_t datalen, u_int compat)
{
ECDSA_SIG *sig = NULL;
int hash_alg;
u_char digest[SSH_DIGEST_MAX_LENGTH];
size_t dlen;
int ret = SSH_ERR_INTERNAL_ERROR;
struct sshbuf *b = NULL, *sigbuf = NULL;
char *ktype = NULL;
if (key == NULL || key->ecdsa == NULL ||
sshkey_type_plain(key->type) != KEY_ECDSA)
return SSH_ERR_INVALID_ARGUMENT;
if ((hash_alg = sshkey_ec_nid_to_hash_alg(key->ecdsa_nid)) == -1 ||
(dlen = ssh_digest_bytes(hash_alg)) == 0)
return SSH_ERR_INTERNAL_ERROR;
/* fetch signature */
if ((b = sshbuf_from(signature, signaturelen)) == NULL)
return SSH_ERR_ALLOC_FAIL;
if (sshbuf_get_cstring(b, &ktype, NULL) != 0 ||
sshbuf_froms(b, &sigbuf) != 0) {
ret = SSH_ERR_INVALID_FORMAT;
goto out;
}
if (strcmp(sshkey_ssh_name_plain(key), ktype) != 0) {
ret = SSH_ERR_KEY_TYPE_MISMATCH;
goto out;
}
if (sshbuf_len(b) != 0) {
ret = SSH_ERR_UNEXPECTED_TRAILING_DATA;
goto out;
}
/* parse signature */
if ((sig = ECDSA_SIG_new()) == NULL) {
ret = SSH_ERR_ALLOC_FAIL;
goto out;
}
if (sshbuf_get_bignum2(sigbuf, sig->r) != 0 ||
sshbuf_get_bignum2(sigbuf, sig->s) != 0) {
ret = SSH_ERR_INVALID_FORMAT;
goto out;
}
if (sshbuf_len(sigbuf) != 0) {
ret = SSH_ERR_UNEXPECTED_TRAILING_DATA;
goto out;
}
if ((ret = ssh_digest_memory(hash_alg, data, datalen,
digest, sizeof(digest))) != 0)
goto out;
switch (ECDSA_do_verify(digest, dlen, sig, key->ecdsa)) {
case 1:
ret = 0;
break;
case 0:
ret = SSH_ERR_SIGNATURE_INVALID;
goto out;
default:
ret = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
}
out:
explicit_bzero(digest, sizeof(digest));
if (sigbuf != NULL)
sshbuf_free(sigbuf);
if (b != NULL)
sshbuf_free(b);
if (sig != NULL)
ECDSA_SIG_free(sig);
free(ktype);
return ret;
}
void
sshbuf_getput_crypto_tests(void)
{
struct sshbuf *p1;
const u_char *d;
size_t s;
BIGNUM *bn, *bn2, *bn_x, *bn_y;
/* This one has num_bits != num_bytes * 8 to test bignum1 encoding */
const char *hexbn1 = "0102030405060708090a0b0c0d0e0f10";
/* This one has MSB set to test bignum2 encoding negative-avoidance */
const char *hexbn2 = "f0e0d0c0b0a0908070605040302010007fff11";
u_char expbn1[] = {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
};
u_char expbn2[] = {
0xf0, 0xe0, 0xd0, 0xc0, 0xb0, 0xa0, 0x90, 0x80,
0x70, 0x60, 0x50, 0x40, 0x30, 0x20, 0x10, 0x00,
0x7f, 0xff, 0x11
};
int ec256_nid = NID_X9_62_prime256v1;
char *ec256_x = "0C828004839D0106AA59575216191357"
"34B451459DADB586677EF9DF55784999";
char *ec256_y = "4D196B50F0B4E94B3C73E3A9D4CD9DF2"
"C8F9A35E42BDD047550F69D80EC23CD4";
u_char expec256[] = {
0x04,
0x0c, 0x82, 0x80, 0x04, 0x83, 0x9d, 0x01, 0x06,
0xaa, 0x59, 0x57, 0x52, 0x16, 0x19, 0x13, 0x57,
0x34, 0xb4, 0x51, 0x45, 0x9d, 0xad, 0xb5, 0x86,
0x67, 0x7e, 0xf9, 0xdf, 0x55, 0x78, 0x49, 0x99,
0x4d, 0x19, 0x6b, 0x50, 0xf0, 0xb4, 0xe9, 0x4b,
0x3c, 0x73, 0xe3, 0xa9, 0xd4, 0xcd, 0x9d, 0xf2,
0xc8, 0xf9, 0xa3, 0x5e, 0x42, 0xbd, 0xd0, 0x47,
0x55, 0x0f, 0x69, 0xd8, 0x0e, 0xc2, 0x3c, 0xd4
};
EC_KEY *eck;
EC_POINT *ecp;
int r;
#define MKBN(b, bnn) \
do { \
bnn = NULL; \
ASSERT_INT_GT(BN_hex2bn(&bnn, b), 0); \
} while (0)
TEST_START("sshbuf_put_bignum1");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_bignum1(p1, bn), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 2);
ASSERT_U16_EQ(PEEK_U16(sshbuf_ptr(p1)), (u_int16_t)BN_num_bits(bn));
ASSERT_MEM_EQ(sshbuf_ptr(p1) + 2, expbn1, sizeof(expbn1));
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum1 limited");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn1) + 1), 0);
r = sshbuf_put_bignum1(p1, bn);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum1 bn2");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_bignum1(p1, bn), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 2);
ASSERT_U16_EQ(PEEK_U16(sshbuf_ptr(p1)), (u_int16_t)BN_num_bits(bn));
ASSERT_MEM_EQ(sshbuf_ptr(p1) + 2, expbn2, sizeof(expbn2));
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum1 bn2 limited");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn1) + 1), 0);
r = sshbuf_put_bignum1(p1, bn);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum2");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_bignum2(p1, bn), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 4);
ASSERT_U32_EQ(PEEK_U32(sshbuf_ptr(p1)), (u_int32_t)BN_num_bytes(bn));
ASSERT_MEM_EQ(sshbuf_ptr(p1) + 4, expbn1, sizeof(expbn1));
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum2 limited");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn1) + 3), 0);
r = sshbuf_put_bignum2(p1, bn);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum2 bn2");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_bignum2(p1, bn), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 4 + 1); /* MSB */
ASSERT_U32_EQ(PEEK_U32(sshbuf_ptr(p1)), (u_int32_t)BN_num_bytes(bn) + 1);
ASSERT_U8_EQ(*(sshbuf_ptr(p1) + 4), 0x00);
ASSERT_MEM_EQ(sshbuf_ptr(p1) + 5, expbn2, sizeof(expbn2));
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum2 bn2 limited");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn2) + 3), 0);
r = sshbuf_put_bignum2(p1, bn);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum1");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1)), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn1));
ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
bn2 = BN_new();
ASSERT_INT_EQ(sshbuf_get_bignum1(p1, bn2), 0);
ASSERT_BIGNUM_EQ(bn, bn2);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum1 truncated");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1) - 1), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn1) - 1);
bn2 = BN_new();
r = sshbuf_get_bignum1(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn1) - 1);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum1 giant");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xffff), 0);
ASSERT_INT_EQ(sshbuf_reserve(p1, (0xffff + 7) / 8, NULL), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + ((0xffff + 7) / 8));
bn2 = BN_new();
r = sshbuf_get_bignum1(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_TOO_LARGE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + ((0xffff + 7) / 8));
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum1 bn2");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn2));
ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
bn2 = BN_new();
ASSERT_INT_EQ(sshbuf_get_bignum1(p1, bn2), 0);
ASSERT_BIGNUM_EQ(bn, bn2);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum1 bn2 truncated");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2) - 1), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn2) - 1);
bn2 = BN_new();
r = sshbuf_get_bignum1(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn2) - 1);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1)), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4 + sizeof(expbn1));
ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
bn2 = BN_new();
ASSERT_INT_EQ(sshbuf_get_bignum2(p1, bn2), 0);
ASSERT_BIGNUM_EQ(bn, bn2);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2 truncated");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1) - 1), 0);
bn2 = BN_new();
r = sshbuf_get_bignum2(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 3);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2 giant");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, 65536), 0);
ASSERT_INT_EQ(sshbuf_reserve(p1, 65536, NULL), 0);
bn2 = BN_new();
r = sshbuf_get_bignum2(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_TOO_LARGE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 65536 + 4);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2 bn2");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn) + 1), 0); /* MSB */
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4 + 1 + sizeof(expbn2));
ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
bn2 = BN_new();
ASSERT_INT_EQ(sshbuf_get_bignum2(p1, bn2), 0);
ASSERT_BIGNUM_EQ(bn, bn2);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2 bn2 truncated");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn) + 1), 0);
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2) - 1), 0);
bn2 = BN_new();
r = sshbuf_get_bignum2(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 1 + 4 - 1);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2 bn2 negative");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0);
bn2 = BN_new();
r = sshbuf_get_bignum2(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_IS_NEGATIVE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 4);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_ec");
eck = EC_KEY_new_by_curve_name(ec256_nid);
ASSERT_PTR_NE(eck, NULL);
ecp = EC_POINT_new(EC_KEY_get0_group(eck));
ASSERT_PTR_NE(ecp, NULL);
MKBN(ec256_x, bn_x);
MKBN(ec256_y, bn_y);
ASSERT_INT_EQ(EC_POINT_set_affine_coordinates_GFp(
EC_KEY_get0_group(eck), ecp, bn_x, bn_y, NULL), 1);
ASSERT_INT_EQ(EC_KEY_set_public_key(eck, ecp), 1);
EC_POINT_free(ecp);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_eckey(p1, eck), 0);
ASSERT_INT_EQ(sshbuf_get_string_direct(p1, &d, &s), 0);
ASSERT_SIZE_T_EQ(s, sizeof(expec256));
ASSERT_MEM_EQ(d, expec256, sizeof(expec256));
sshbuf_free(p1);
EC_KEY_free(eck);
TEST_DONE();
TEST_START("sshbuf_get_ec");
eck = EC_KEY_new_by_curve_name(ec256_nid);
ASSERT_PTR_NE(eck, NULL);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_string(p1, expec256, sizeof(expec256)), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expec256) + 4);
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0);
ASSERT_INT_EQ(sshbuf_get_eckey(p1, eck), 0);
bn_x = BN_new();
bn_y = BN_new();
ASSERT_PTR_NE(bn_x, NULL);
ASSERT_PTR_NE(bn_y, NULL);
ASSERT_INT_EQ(EC_POINT_get_affine_coordinates_GFp(
EC_KEY_get0_group(eck), EC_KEY_get0_public_key(eck),
bn_x, bn_y, NULL), 1);
MKBN(ec256_x, bn);
MKBN(ec256_y, bn2);
ASSERT_INT_EQ(BN_cmp(bn_x, bn), 0);
ASSERT_INT_EQ(BN_cmp(bn_y, bn2), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1);
sshbuf_free(p1);
EC_KEY_free(eck);
BN_free(bn_x);
BN_free(bn_y);
BN_free(bn);
BN_free(bn2);
TEST_DONE();
}