diff -Naur old/auth-pam.c new/auth-pam.c
--- old/auth-pam.c	2017-10-03 21:49:05.363829772 -1000
+++ new/auth-pam.c	2017-10-03 21:55:50.869718862 -1000
@@ -128,6 +128,10 @@
 typedef pthread_t sp_pthread_t;
 #else
 typedef pid_t sp_pthread_t;
+# define pthread_create(a, b, c, d)    _ssh_compat_pthread_create(a, b, c, d)
+# define pthread_exit(a)               _ssh_compat_pthread_exit(a)
+# define pthread_cancel(a)             _ssh_compat_pthread_cancel(a)
+# define pthread_join(a, b)            _ssh_compat_pthread_join(a, b)
 #endif
 
 struct pam_ctxt {
diff -Naur old/cipher.c new/cipher.c
--- old/cipher.c	2017-10-03 21:49:05.367162904 -1000
+++ new/cipher.c	2017-10-03 21:55:50.869718862 -1000
@@ -297,7 +297,10 @@
 			goto out;
 		}
 	}
-	if (EVP_CipherInit(cc->evp, NULL, (u_char *)key, NULL, -1) == 0) {
+	/* in OpenSSL 1.1.0, EVP_CipherInit clears all previous setups;
+	   use EVP_CipherInit_ex for augmenting */
+	if (EVP_CipherInit_ex(cc->evp, NULL, NULL, (u_char *)key, NULL, -1) == 0)
+	{
 		ret = SSH_ERR_LIBCRYPTO_ERROR;
 		goto out;
 	}
@@ -486,7 +489,7 @@
 		   len, iv))
 		       return SSH_ERR_LIBCRYPTO_ERROR;
 	} else
-		memcpy(iv, cc->evp->iv, len);
+		memcpy(iv, EVP_CIPHER_CTX_iv(cc->evp), len);
 #endif
 	return 0;
 }
@@ -520,14 +523,19 @@
 		    EVP_CTRL_GCM_SET_IV_FIXED, -1, (void *)iv))
 			return SSH_ERR_LIBCRYPTO_ERROR;
 	} else
-		memcpy(cc->evp->iv, iv, evplen);
+		memcpy(EVP_CIPHER_CTX_iv(cc->evp), iv, evplen);
 #endif
 	return 0;
 }
 
 #ifdef WITH_OPENSSL
-#define EVP_X_STATE(evp)	(evp)->cipher_data
-#define EVP_X_STATE_LEN(evp)	(evp)->cipher->ctx_size
+# if OPENSSL_VERSION_NUMBER >= 0x10100000UL
+#define EVP_X_STATE(evp)	EVP_CIPHER_CTX_get_cipher_data(evp)
+#define EVP_X_STATE_LEN(evp)	EVP_CIPHER_impl_ctx_size(EVP_CIPHER_CTX_cipher(evp))
+# else
+#define EVP_X_STATE(evp)	(evp).cipher_data
+#define EVP_X_STATE_LEN(evp)	(evp).cipher->ctx_size
+# endif
 #endif
 
 int
diff -Naur old/cipher.h new/cipher.h
--- old/cipher.h	2017-10-03 21:49:05.367162904 -1000
+++ new/cipher.h	2017-10-03 21:55:50.869718862 -1000
@@ -46,7 +46,18 @@
 #define CIPHER_DECRYPT		0
 
 struct sshcipher;
+#if 0
+struct sshcipher_ctx {
+	int	plaintext;
+	int	encrypt;
+	EVP_CIPHER_CTX *evp;
+	struct chachapoly_ctx cp_ctx; /* XXX union with evp? */
+	struct aesctr_ctx ac_ctx; /* XXX union with evp? */
+	const struct sshcipher *cipher;
+};
+#else
 struct sshcipher_ctx;
+#endif
 
 const struct sshcipher *cipher_by_name(const char *);
 const char *cipher_warning_message(const struct sshcipher_ctx *);
diff -Naur old/configure new/configure
--- old/configure	2017-10-03 21:49:05.410493626 -1000
+++ new/configure	2017-10-03 22:01:49.159050540 -1000
@@ -12688,7 +12688,6 @@
 				100*)   ;; # 1.0.x
 				200*)   ;; # LibreSSL
 			        *)
-					as_fn_error $? "OpenSSL >= 1.1.0 is not yet supported (have \"$ssl_library_ver\")" "$LINENO" 5
 			                ;;
 			esac
 			{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ssl_library_ver" >&5
diff -Naur old/dh.c new/dh.c
--- old/dh.c	2017-10-03 21:49:05.370496037 -1000
+++ new/dh.c	2017-10-03 21:55:50.869718862 -1000
@@ -212,14 +212,15 @@
 /* diffie-hellman-groupN-sha1 */
 
 int
-dh_pub_is_valid(DH *dh, BIGNUM *dh_pub)
+dh_pub_is_valid(const DH *dh, const BIGNUM *dh_pub)
 {
 	int i;
 	int n = BN_num_bits(dh_pub);
 	int bits_set = 0;
 	BIGNUM *tmp;
+	const BIGNUM *p;
 
-	if (dh_pub->neg) {
+	if (BN_is_negative(dh_pub)) {
 		logit("invalid public DH value: negative");
 		return 0;
 	}
@@ -232,7 +233,8 @@
 		error("%s: BN_new failed", __func__);
 		return 0;
 	}
-	if (!BN_sub(tmp, dh->p, BN_value_one()) ||
+	DH_get0_pqg(dh, &p, NULL, NULL);
+	if (!BN_sub(tmp, p, BN_value_one()) ||
 	    BN_cmp(dh_pub, tmp) != -1) {		/* pub_exp > p-2 */
 		BN_clear_free(tmp);
 		logit("invalid public DH value: >= p-1");
@@ -243,14 +245,14 @@
 	for (i = 0; i <= n; i++)
 		if (BN_is_bit_set(dh_pub, i))
 			bits_set++;
-	debug2("bits set: %d/%d", bits_set, BN_num_bits(dh->p));
+	debug2("bits set: %d/%d", bits_set, BN_num_bits(p));
 
 	/*
 	 * if g==2 and bits_set==1 then computing log_g(dh_pub) is trivial
 	 */
 	if (bits_set < 4) {
 		logit("invalid public DH value (%d/%d)",
-		   bits_set, BN_num_bits(dh->p));
+		   bits_set, BN_num_bits(p));
 		return 0;
 	}
 	return 1;
@@ -260,9 +262,13 @@
 dh_gen_key(DH *dh, int need)
 {
 	int pbits;
+	const BIGNUM *p, *pub_key;
+	BIGNUM *priv_key;
 
-	if (need < 0 || dh->p == NULL ||
-	    (pbits = BN_num_bits(dh->p)) <= 0 ||
+	DH_get0_pqg(dh, &p, NULL, NULL);
+
+	if (need < 0 || p == NULL ||
+	    (pbits = BN_num_bits(p)) <= 0 ||
 	    need > INT_MAX / 2 || 2 * need > pbits)
 		return SSH_ERR_INVALID_ARGUMENT;
 	if (need < 256)
@@ -271,10 +277,13 @@
 	 * Pollard Rho, Big step/Little Step attacks are O(sqrt(n)),
 	 * so double requested need here.
 	 */
-	dh->length = MINIMUM(need * 2, pbits - 1);
-	if (DH_generate_key(dh) == 0 ||
-	    !dh_pub_is_valid(dh, dh->pub_key)) {
-		BN_clear_free(dh->priv_key);
+	DH_set_length(dh, MIN(need * 2, pbits - 1));
+	if (DH_generate_key(dh) == 0) {
+		return SSH_ERR_LIBCRYPTO_ERROR;
+	}
+	DH_get0_key(dh, &pub_key, &priv_key);
+	if (!dh_pub_is_valid(dh, pub_key)) {
+		BN_clear(priv_key);
 		return SSH_ERR_LIBCRYPTO_ERROR;
 	}
 	return 0;
@@ -283,16 +292,27 @@
 DH *
 dh_new_group_asc(const char *gen, const char *modulus)
 {
-	DH *dh;
+	DH *dh = NULL;
+	BIGNUM *p=NULL, *g=NULL;
 
-	if ((dh = DH_new()) == NULL)
-		return NULL;
-	if (BN_hex2bn(&dh->p, modulus) == 0 ||
-	    BN_hex2bn(&dh->g, gen) == 0) {
-		DH_free(dh);
-		return NULL;
+	if ((dh = DH_new()) == NULL ||
+	    (p = BN_new()) == NULL ||
+	    (g = BN_new()) == NULL)
+		goto null;
+	if (BN_hex2bn(&p, modulus) == 0 ||
+	    BN_hex2bn(&g, gen) == 0) {
+		goto null;
 	}
+	if (DH_set0_pqg(dh, p, NULL, g) == 0) {
+		goto null;
+	}
+	p = g = NULL;
 	return (dh);
+null:
+	BN_free(p);
+	BN_free(g);
+	DH_free(dh);
+	return NULL;
 }
 
 /*
@@ -307,8 +327,8 @@
 
 	if ((dh = DH_new()) == NULL)
 		return NULL;
-	dh->p = modulus;
-	dh->g = gen;
+	if (DH_set0_pqg(dh, modulus, NULL, gen) == 0)
+		return NULL;
 
 	return (dh);
 }
diff -Naur old/dh.h new/dh.h
--- old/dh.h	2017-10-03 21:49:05.370496037 -1000
+++ new/dh.h	2017-10-03 21:55:50.869718862 -1000
@@ -42,7 +42,7 @@
 DH	*dh_new_group_fallback(int);
 
 int	 dh_gen_key(DH *, int);
-int	 dh_pub_is_valid(DH *, BIGNUM *);
+int	 dh_pub_is_valid(const DH *, const BIGNUM *);
 
 u_int	 dh_estimate(int);
 
diff -Naur old/digest-openssl.c new/digest-openssl.c
--- old/digest-openssl.c	2017-10-03 21:49:05.370496037 -1000
+++ new/digest-openssl.c	2017-10-03 21:55:50.869718862 -1000
@@ -43,7 +43,7 @@
 
 struct ssh_digest_ctx {
 	int alg;
-	EVP_MD_CTX mdctx;
+	EVP_MD_CTX *mdctx;
 };
 
 struct ssh_digest {
@@ -106,20 +106,21 @@
 size_t
 ssh_digest_blocksize(struct ssh_digest_ctx *ctx)
 {
-	return EVP_MD_CTX_block_size(&ctx->mdctx);
+	return EVP_MD_CTX_block_size(ctx->mdctx);
 }
 
 struct ssh_digest_ctx *
 ssh_digest_start(int alg)
 {
 	const struct ssh_digest *digest = ssh_digest_by_alg(alg);
-	struct ssh_digest_ctx *ret;
+	struct ssh_digest_ctx *ret = NULL;
 
 	if (digest == NULL || ((ret = calloc(1, sizeof(*ret))) == NULL))
 		return NULL;
 	ret->alg = alg;
-	EVP_MD_CTX_init(&ret->mdctx);
-	if (EVP_DigestInit_ex(&ret->mdctx, digest->mdfunc(), NULL) != 1) {
+	if ((ret->mdctx = EVP_MD_CTX_new()) == NULL ||
+	    EVP_DigestInit_ex(ret->mdctx, digest->mdfunc(), NULL) != 1) {
+		EVP_MD_CTX_free(ret->mdctx);
 		free(ret);
 		return NULL;
 	}
@@ -132,7 +133,7 @@
 	if (from->alg != to->alg)
 		return SSH_ERR_INVALID_ARGUMENT;
 	/* we have bcopy-style order while openssl has memcpy-style */
-	if (!EVP_MD_CTX_copy_ex(&to->mdctx, &from->mdctx))
+	if (!EVP_MD_CTX_copy_ex(to->mdctx, from->mdctx))
 		return SSH_ERR_LIBCRYPTO_ERROR;
 	return 0;
 }
@@ -140,7 +141,7 @@
 int
 ssh_digest_update(struct ssh_digest_ctx *ctx, const void *m, size_t mlen)
 {
-	if (EVP_DigestUpdate(&ctx->mdctx, m, mlen) != 1)
+	if (EVP_DigestUpdate(ctx->mdctx, m, mlen) != 1)
 		return SSH_ERR_LIBCRYPTO_ERROR;
 	return 0;
 }
@@ -161,7 +162,7 @@
 		return SSH_ERR_INVALID_ARGUMENT;
 	if (dlen < digest->digest_len) /* No truncation allowed */
 		return SSH_ERR_INVALID_ARGUMENT;
-	if (EVP_DigestFinal_ex(&ctx->mdctx, d, &l) != 1)
+	if (EVP_DigestFinal_ex(ctx->mdctx, d, &l) != 1)
 		return SSH_ERR_LIBCRYPTO_ERROR;
 	if (l != digest->digest_len) /* sanity */
 		return SSH_ERR_INTERNAL_ERROR;
@@ -172,7 +173,7 @@
 ssh_digest_free(struct ssh_digest_ctx *ctx)
 {
 	if (ctx != NULL) {
-		EVP_MD_CTX_cleanup(&ctx->mdctx);
+		EVP_MD_CTX_free(ctx->mdctx);
 		explicit_bzero(ctx, sizeof(*ctx));
 		free(ctx);
 	}
diff -Naur old/kexdhc.c new/kexdhc.c
--- old/kexdhc.c	2017-10-03 21:49:05.373829169 -1000
+++ new/kexdhc.c	2017-10-03 21:55:50.869718862 -1000
@@ -81,11 +81,16 @@
 		goto out;
 	}
 	debug("sending SSH2_MSG_KEXDH_INIT");
-	if ((r = dh_gen_key(kex->dh, kex->we_need * 8)) != 0 ||
-	    (r = sshpkt_start(ssh, SSH2_MSG_KEXDH_INIT)) != 0 ||
-	    (r = sshpkt_put_bignum2(ssh, kex->dh->pub_key)) != 0 ||
+	{
+	const BIGNUM *pub_key;
+	if ((r = dh_gen_key(kex->dh, kex->we_need * 8)) != 0)
+		goto out;
+	DH_get0_key(kex->dh, &pub_key, NULL);
+	if ((r = sshpkt_start(ssh, SSH2_MSG_KEXDH_INIT)) != 0 ||
+	    (r = sshpkt_put_bignum2(ssh, pub_key)) != 0 ||
 	    (r = sshpkt_send(ssh)) != 0)
 		goto out;
+	}
 #ifdef DEBUG_KEXDH
 	DHparams_print_fp(stderr, kex->dh);
 	fprintf(stderr, "pub= ");
@@ -169,6 +174,9 @@
 
 	/* calc and verify H */
 	hashlen = sizeof(hash);
+	{
+	const BIGNUM *pub_key;
+	DH_get0_key(kex->dh, &pub_key, NULL);
 	if ((r = kex_dh_hash(
 	    kex->hash_alg,
 	    kex->client_version_string,
@@ -176,11 +184,13 @@
 	    sshbuf_ptr(kex->my), sshbuf_len(kex->my),
 	    sshbuf_ptr(kex->peer), sshbuf_len(kex->peer),
 	    server_host_key_blob, sbloblen,
-	    kex->dh->pub_key,
+	    pub_key,
 	    dh_server_pub,
 	    shared_secret,
-	    hash, &hashlen)) != 0)
+	    hash, &hashlen)) != 0) {
 		goto out;
+	}
+	}
 
 	if ((r = sshkey_verify(server_host_key, signature, slen, hash, hashlen,
 	    ssh->compat)) != 0)
diff -Naur old/kexdhs.c new/kexdhs.c
--- old/kexdhs.c	2017-10-03 21:49:05.373829169 -1000
+++ new/kexdhs.c	2017-10-03 21:55:50.869718862 -1000
@@ -87,6 +87,10 @@
 	ssh_dispatch_set(ssh, SSH2_MSG_KEXDH_INIT, &input_kex_dh_init);
 	r = 0;
  out:
+	if (r != 0) {
+		if (kex->dh) DH_free(kex->dh);
+		kex->dh = NULL;
+	}
 	return r;
 }
 
@@ -163,6 +167,9 @@
 		goto out;
 	/* calc H */
 	hashlen = sizeof(hash);
+	{
+	const BIGNUM *pub_key;
+	DH_get0_key(kex->dh, &pub_key, NULL);
 	if ((r = kex_dh_hash(
 	    kex->hash_alg,
 	    kex->client_version_string,
@@ -171,10 +178,12 @@
 	    sshbuf_ptr(kex->my), sshbuf_len(kex->my),
 	    server_host_key_blob, sbloblen,
 	    dh_client_pub,
-	    kex->dh->pub_key,
+	    pub_key,
 	    shared_secret,
-	    hash, &hashlen)) != 0)
+	    hash, &hashlen)) != 0) {
 		goto out;
+	}
+	}
 
 	/* save session id := H */
 	if (kex->session_id == NULL) {
@@ -195,12 +204,17 @@
 	/* destroy_sensitive_data(); */
 
 	/* send server hostkey, DH pubkey 'f' and singed H */
+	{
+	const BIGNUM *pub_key;
+	DH_get0_key(kex->dh, &pub_key, NULL);
 	if ((r = sshpkt_start(ssh, SSH2_MSG_KEXDH_REPLY)) != 0 ||
 	    (r = sshpkt_put_string(ssh, server_host_key_blob, sbloblen)) != 0 ||
-	    (r = sshpkt_put_bignum2(ssh, kex->dh->pub_key)) != 0 ||	/* f */
+	    (r = sshpkt_put_bignum2(ssh, pub_key)) != 0 ||	/* f */
 	    (r = sshpkt_put_string(ssh, signature, slen)) != 0 ||
-	    (r = sshpkt_send(ssh)) != 0)
+	    (r = sshpkt_send(ssh)) != 0) {
 		goto out;
+	}
+	}
 
 	if ((r = kex_derive_keys_bn(ssh, hash, hashlen, shared_secret)) == 0)
 		r = kex_send_newkeys(ssh);
diff -Naur old/kexgexc.c new/kexgexc.c
--- old/kexgexc.c	2017-10-03 21:49:05.373829169 -1000
+++ new/kexgexc.c	2017-10-03 21:55:50.869718862 -1000
@@ -118,11 +118,17 @@
 	p = g = NULL; /* belong to kex->dh now */
 
 	/* generate and send 'e', client DH public key */
-	if ((r = dh_gen_key(kex->dh, kex->we_need * 8)) != 0 ||
-	    (r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_INIT)) != 0 ||
-	    (r = sshpkt_put_bignum2(ssh, kex->dh->pub_key)) != 0 ||
-	    (r = sshpkt_send(ssh)) != 0)
+	{
+	const BIGNUM *pub_key;
+	if ((r = dh_gen_key(kex->dh, kex->we_need * 8)) != 0)
+		goto out;
+	DH_get0_key(kex->dh, &pub_key, NULL);
+	if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_INIT)) != 0 ||
+	    (r = sshpkt_put_bignum2(ssh, pub_key)) != 0 ||
+	    (r = sshpkt_send(ssh)) != 0) {
 		goto out;
+	}
+	}
 	debug("SSH2_MSG_KEX_DH_GEX_INIT sent");
 #ifdef DEBUG_KEXDH
 	DHparams_print_fp(stderr, kex->dh);
@@ -134,10 +140,12 @@
 	ssh_dispatch_set(ssh, SSH2_MSG_KEX_DH_GEX_REPLY, &input_kex_dh_gex_reply);
 	r = 0;
 out:
-	if (p)
+	if (r != 0) {
 		BN_clear_free(p);
-	if (g)
 		BN_clear_free(g);
+		DH_free(kex->dh);
+		kex->dh = NULL;
+	}
 	return r;
 }
 
@@ -214,6 +222,10 @@
 
 	/* calc and verify H */
 	hashlen = sizeof(hash);
+	{
+	const BIGNUM *p, *g, *pub_key;
+	DH_get0_pqg(kex->dh, &p, NULL, &g);
+	DH_get0_key(kex->dh, &pub_key, NULL);
 	if ((r = kexgex_hash(
 	    kex->hash_alg,
 	    kex->client_version_string,
@@ -222,12 +234,14 @@
 	    sshbuf_ptr(kex->peer), sshbuf_len(kex->peer),
 	    server_host_key_blob, sbloblen,
 	    kex->min, kex->nbits, kex->max,
-	    kex->dh->p, kex->dh->g,
-	    kex->dh->pub_key,
+	    p, g,
+	    pub_key,
 	    dh_server_pub,
 	    shared_secret,
-	    hash, &hashlen)) != 0)
+	    hash, &hashlen)) != 0) {
 		goto out;
+	}
+	}
 
 	if ((r = sshkey_verify(server_host_key, signature, slen, hash,
 	    hashlen, ssh->compat)) != 0)
diff -Naur old/kexgexs.c new/kexgexs.c
--- old/kexgexs.c	2017-10-03 21:49:05.373829169 -1000
+++ new/kexgexs.c	2017-10-03 21:55:50.869718862 -1000
@@ -101,11 +101,16 @@
 		goto out;
 	}
 	debug("SSH2_MSG_KEX_DH_GEX_GROUP sent");
+	{
+	const BIGNUM *p, *g;
+	DH_get0_pqg(kex->dh, &p, NULL, &g);
 	if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_GROUP)) != 0 ||
-	    (r = sshpkt_put_bignum2(ssh, kex->dh->p)) != 0 ||
-	    (r = sshpkt_put_bignum2(ssh, kex->dh->g)) != 0 ||
-	    (r = sshpkt_send(ssh)) != 0)
+	    (r = sshpkt_put_bignum2(ssh, p)) != 0 ||
+	    (r = sshpkt_put_bignum2(ssh, g)) != 0 ||
+	    (r = sshpkt_send(ssh)) != 0) {
 		goto out;
+	}
+	}
 
 	/* Compute our exchange value in parallel with the client */
 	if ((r = dh_gen_key(kex->dh, kex->we_need * 8)) != 0)
@@ -115,6 +120,10 @@
 	ssh_dispatch_set(ssh, SSH2_MSG_KEX_DH_GEX_INIT, &input_kex_dh_gex_init);
 	r = 0;
  out:
+	if (r != 0) {
+		DH_free(kex->dh);
+		kex->dh = NULL;
+	}
 	return r;
 }
 
@@ -191,6 +200,10 @@
 		goto out;
 	/* calc H */
 	hashlen = sizeof(hash);
+	{
+	const BIGNUM *p, *g, *pub_key;
+	DH_get0_pqg(kex->dh, &p, NULL, &g);
+	DH_get0_key(kex->dh, &pub_key, NULL);
 	if ((r = kexgex_hash(
 	    kex->hash_alg,
 	    kex->client_version_string,
@@ -199,12 +212,14 @@
 	    sshbuf_ptr(kex->my), sshbuf_len(kex->my),
 	    server_host_key_blob, sbloblen,
 	    kex->min, kex->nbits, kex->max,
-	    kex->dh->p, kex->dh->g,
+	    p, g,
 	    dh_client_pub,
-	    kex->dh->pub_key,
+	    pub_key,
 	    shared_secret,
-	    hash, &hashlen)) != 0)
+	    hash, &hashlen)) != 0) {
 		goto out;
+	}
+	}
 
 	/* save session id := H */
 	if (kex->session_id == NULL) {
@@ -225,12 +240,17 @@
 	/* destroy_sensitive_data(); */
 
 	/* send server hostkey, DH pubkey 'f' and singed H */
+	{
+	const BIGNUM *pub_key;
+	DH_get0_key(kex->dh, &pub_key, NULL);
 	if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_REPLY)) != 0 ||
 	    (r = sshpkt_put_string(ssh, server_host_key_blob, sbloblen)) != 0 ||
-	    (r = sshpkt_put_bignum2(ssh, kex->dh->pub_key)) != 0 ||     /* f */
+	    (r = sshpkt_put_bignum2(ssh, pub_key)) != 0 ||     /* f */
 	    (r = sshpkt_put_string(ssh, signature, slen)) != 0 ||
-	    (r = sshpkt_send(ssh)) != 0)
+	    (r = sshpkt_send(ssh)) != 0) {
 		goto out;
+	}
+	}
 
 	if ((r = kex_derive_keys_bn(ssh, hash, hashlen, shared_secret)) == 0)
 		r = kex_send_newkeys(ssh);
diff -Naur old/monitor.c new/monitor.c
--- old/monitor.c	2017-10-03 21:49:05.377162302 -1000
+++ new/monitor.c	2017-10-03 21:55:50.869718862 -1000
@@ -586,10 +586,12 @@
 		buffer_put_char(m, 0);
 		return (0);
 	} else {
+		const BIGNUM *p, *g;
+		DH_get0_pqg(dh, &p, NULL, &g);
 		/* Send first bignum */
 		buffer_put_char(m, 1);
-		buffer_put_bignum2(m, dh->p);
-		buffer_put_bignum2(m, dh->g);
+		buffer_put_bignum2(m, p);
+		buffer_put_bignum2(m, g);
 
 		DH_free(dh);
 	}
diff -Naur old/openbsd-compat/openssl-compat.c new/openbsd-compat/openssl-compat.c
--- old/openbsd-compat/openssl-compat.c	2017-10-03 21:49:05.397161097 -1000
+++ new/openbsd-compat/openssl-compat.c	2017-10-03 21:55:50.886387486 -1000
@@ -75,7 +75,6 @@
 	/* Enable use of crypto hardware */
 	ENGINE_load_builtin_engines();
 	ENGINE_register_all_complete();
-	OPENSSL_config(NULL);
 }
 #endif
 
diff -Naur old/regress/unittests/sshkey/test_file.c new/regress/unittests/sshkey/test_file.c
--- old/regress/unittests/sshkey/test_file.c	2017-10-03 21:49:05.387161699 -1000
+++ new/regress/unittests/sshkey/test_file.c	2017-10-03 21:55:50.883053761 -1000
@@ -60,9 +60,14 @@
 	a = load_bignum("rsa_1.param.n");
 	b = load_bignum("rsa_1.param.p");
 	c = load_bignum("rsa_1.param.q");
-	ASSERT_BIGNUM_EQ(k1->rsa->n, a);
-	ASSERT_BIGNUM_EQ(k1->rsa->p, b);
-	ASSERT_BIGNUM_EQ(k1->rsa->q, c);
+	{
+	const BIGNUM *n, *p, *q;
+	RSA_get0_key(k1->rsa, &n, NULL, NULL);
+	RSA_get0_factors(k1->rsa, &p, &q);
+	ASSERT_BIGNUM_EQ(n, a);
+	ASSERT_BIGNUM_EQ(p, b);
+	ASSERT_BIGNUM_EQ(q, c);
+	}
 	BN_free(a);
 	BN_free(b);
 	BN_free(c);
@@ -151,9 +156,14 @@
 	a = load_bignum("dsa_1.param.g");
 	b = load_bignum("dsa_1.param.priv");
 	c = load_bignum("dsa_1.param.pub");
-	ASSERT_BIGNUM_EQ(k1->dsa->g, a);
-	ASSERT_BIGNUM_EQ(k1->dsa->priv_key, b);
-	ASSERT_BIGNUM_EQ(k1->dsa->pub_key, c);
+	{
+	const BIGNUM *g, *priv_key, *pub_key;
+	DSA_get0_pqg(k1->dsa, NULL, NULL, &g);
+	DSA_get0_key(k1->dsa, &pub_key, &priv_key);
+	ASSERT_BIGNUM_EQ(g, a);
+	ASSERT_BIGNUM_EQ(priv_key, b);
+	ASSERT_BIGNUM_EQ(pub_key, c);
+	}
 	BN_free(a);
 	BN_free(b);
 	BN_free(c);
diff -Naur old/regress/unittests/sshkey/test_sshkey.c new/regress/unittests/sshkey/test_sshkey.c
--- old/regress/unittests/sshkey/test_sshkey.c	2017-10-03 21:49:05.387161699 -1000
+++ new/regress/unittests/sshkey/test_sshkey.c	2017-10-03 21:55:50.883053761 -1000
@@ -197,9 +197,14 @@
 	k1 = sshkey_new(KEY_RSA);
 	ASSERT_PTR_NE(k1, NULL);
 	ASSERT_PTR_NE(k1->rsa, NULL);
-	ASSERT_PTR_NE(k1->rsa->n, NULL);
-	ASSERT_PTR_NE(k1->rsa->e, NULL);
-	ASSERT_PTR_EQ(k1->rsa->p, NULL);
+	{
+	const BIGNUM *n, *e, *p;
+	RSA_get0_key(k1->rsa, &n, &e, NULL);
+	RSA_get0_factors(k1->rsa, &p, NULL);
+	ASSERT_PTR_NE(n, NULL);
+	ASSERT_PTR_NE(e, NULL);
+	ASSERT_PTR_EQ(p, NULL);
+	}
 	sshkey_free(k1);
 	TEST_DONE();
 
@@ -207,8 +212,13 @@
 	k1 = sshkey_new(KEY_DSA);
 	ASSERT_PTR_NE(k1, NULL);
 	ASSERT_PTR_NE(k1->dsa, NULL);
-	ASSERT_PTR_NE(k1->dsa->g, NULL);
-	ASSERT_PTR_EQ(k1->dsa->priv_key, NULL);
+	{
+	const BIGNUM *g, *priv_key;
+	DSA_get0_pqg(k1->dsa, NULL, NULL, &g);
+	DSA_get0_key(k1->dsa, NULL, &priv_key);
+	ASSERT_PTR_NE(g, NULL);
+	ASSERT_PTR_EQ(priv_key, NULL);
+	}
 	sshkey_free(k1);
 	TEST_DONE();
 
@@ -234,9 +244,14 @@
 	k1 = sshkey_new_private(KEY_RSA);
 	ASSERT_PTR_NE(k1, NULL);
 	ASSERT_PTR_NE(k1->rsa, NULL);
-	ASSERT_PTR_NE(k1->rsa->n, NULL);
-	ASSERT_PTR_NE(k1->rsa->e, NULL);
-	ASSERT_PTR_NE(k1->rsa->p, NULL);
+	{
+	const BIGNUM *n, *e, *p;
+	RSA_get0_key(k1->rsa, &n, &e, NULL);
+	RSA_get0_factors(k1->rsa, &p, NULL);
+	ASSERT_PTR_NE(n, NULL);
+	ASSERT_PTR_NE(e, NULL);
+	ASSERT_PTR_NE(p, NULL);
+	}
 	ASSERT_INT_EQ(sshkey_add_private(k1), 0);
 	sshkey_free(k1);
 	TEST_DONE();
@@ -245,8 +260,13 @@
 	k1 = sshkey_new_private(KEY_DSA);
 	ASSERT_PTR_NE(k1, NULL);
 	ASSERT_PTR_NE(k1->dsa, NULL);
-	ASSERT_PTR_NE(k1->dsa->g, NULL);
-	ASSERT_PTR_NE(k1->dsa->priv_key, NULL);
+	{
+	const BIGNUM *g, *priv_key;
+	DSA_get0_pqg(k1->dsa, NULL, NULL, &g);
+	DSA_get0_key(k1->dsa, NULL, &priv_key);
+	ASSERT_PTR_NE(g, NULL);
+	ASSERT_PTR_NE(priv_key, NULL);
+	}
 	ASSERT_INT_EQ(sshkey_add_private(k1), 0);
 	sshkey_free(k1);
 	TEST_DONE();
@@ -285,18 +305,28 @@
 	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1024, &kr), 0);
 	ASSERT_PTR_NE(kr, NULL);
 	ASSERT_PTR_NE(kr->rsa, NULL);
-	ASSERT_PTR_NE(kr->rsa->n, NULL);
-	ASSERT_PTR_NE(kr->rsa->e, NULL);
-	ASSERT_PTR_NE(kr->rsa->p, NULL);
-	ASSERT_INT_EQ(BN_num_bits(kr->rsa->n), 1024);
+	{
+	const BIGNUM *n, *e, *p;
+	RSA_get0_key(kr->rsa, &n, &e, NULL);
+	RSA_get0_factors(kr->rsa, &p, NULL);
+	ASSERT_PTR_NE(n, NULL);
+	ASSERT_PTR_NE(e, NULL);
+	ASSERT_PTR_NE(p, NULL);
+	ASSERT_INT_EQ(BN_num_bits(n), 1024);
+	}
 	TEST_DONE();
 
 	TEST_START("generate KEY_DSA");
 	ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 1024, &kd), 0);
 	ASSERT_PTR_NE(kd, NULL);
 	ASSERT_PTR_NE(kd->dsa, NULL);
-	ASSERT_PTR_NE(kd->dsa->g, NULL);
-	ASSERT_PTR_NE(kd->dsa->priv_key, NULL);
+	{
+	const BIGNUM *g, *priv_key;
+	DSA_get0_pqg(kd->dsa, NULL, NULL, &g);
+	DSA_get0_key(kd->dsa, NULL, &priv_key);
+	ASSERT_PTR_NE(g, NULL);
+	ASSERT_PTR_NE(priv_key, NULL);
+	}
 	TEST_DONE();
 
 #ifdef OPENSSL_HAS_ECC
@@ -323,9 +353,14 @@
 	ASSERT_PTR_NE(kr, k1);
 	ASSERT_INT_EQ(k1->type, KEY_RSA);
 	ASSERT_PTR_NE(k1->rsa, NULL);
-	ASSERT_PTR_NE(k1->rsa->n, NULL);
-	ASSERT_PTR_NE(k1->rsa->e, NULL);
-	ASSERT_PTR_EQ(k1->rsa->p, NULL);
+	{
+	const BIGNUM *n, *e, *p;
+	RSA_get0_key(k1->rsa, &n, &e, NULL);
+	RSA_get0_factors(k1->rsa, &p, NULL);
+	ASSERT_PTR_NE(n, NULL);
+	ASSERT_PTR_NE(e, NULL);
+	ASSERT_PTR_EQ(p, NULL);
+	}
 	TEST_DONE();
 
 	TEST_START("equal KEY_RSA/demoted KEY_RSA");
@@ -339,8 +374,13 @@
 	ASSERT_PTR_NE(kd, k1);
 	ASSERT_INT_EQ(k1->type, KEY_DSA);
 	ASSERT_PTR_NE(k1->dsa, NULL);
-	ASSERT_PTR_NE(k1->dsa->g, NULL);
-	ASSERT_PTR_EQ(k1->dsa->priv_key, NULL);
+	{
+	const BIGNUM *g, *priv_key;
+	DSA_get0_pqg(k1->dsa, NULL, NULL, &g);
+	DSA_get0_key(k1->dsa, NULL, &priv_key);
+	ASSERT_PTR_NE(g, NULL);
+	ASSERT_PTR_EQ(priv_key, NULL);
+	}
 	TEST_DONE();
 
 	TEST_START("equal KEY_DSA/demoted KEY_DSA");
diff -Naur old/ssh-dss.c new/ssh-dss.c
--- old/ssh-dss.c	2017-10-03 21:49:05.403827361 -1000
+++ new/ssh-dss.c	2017-10-03 21:55:50.869718862 -1000
@@ -53,6 +53,7 @@
 	DSA_SIG *sig = NULL;
 	u_char digest[SSH_DIGEST_MAX_LENGTH], sigblob[SIGBLOB_LEN];
 	size_t rlen, slen, len, dlen = ssh_digest_bytes(SSH_DIGEST_SHA1);
+	const BIGNUM *r, *s;
 	struct sshbuf *b = NULL;
 	int ret = SSH_ERR_INVALID_ARGUMENT;
 
@@ -76,15 +77,16 @@
 		goto out;
 	}
 
-	rlen = BN_num_bytes(sig->r);
-	slen = BN_num_bytes(sig->s);
+	DSA_SIG_get0(sig, &r, &s);
+	rlen = BN_num_bytes(r);
+	slen = BN_num_bytes(s);
 	if (rlen > INTBLOB_LEN || slen > INTBLOB_LEN) {
 		ret = SSH_ERR_INTERNAL_ERROR;
 		goto out;
 	}
 	explicit_bzero(sigblob, SIGBLOB_LEN);
-	BN_bn2bin(sig->r, sigblob + SIGBLOB_LEN - INTBLOB_LEN - rlen);
-	BN_bn2bin(sig->s, sigblob + SIGBLOB_LEN - slen);
+	BN_bn2bin(r, sigblob + SIGBLOB_LEN - INTBLOB_LEN - rlen);
+	BN_bn2bin(s, sigblob + SIGBLOB_LEN - slen);
 
 	if (compat & SSH_BUG_SIGBLOB) {
 		if (sigp != NULL) {
@@ -176,17 +178,26 @@
 	}
 
 	/* parse signature */
+	{
+	BIGNUM *r=NULL, *s=NULL;
 	if ((sig = DSA_SIG_new()) == NULL ||
-	    (sig->r = BN_new()) == NULL ||
-	    (sig->s = BN_new()) == NULL) {
+	    (r = BN_new()) == NULL ||
+	    (s = BN_new()) == NULL) {
 		ret = SSH_ERR_ALLOC_FAIL;
+		BN_free(r);
+		BN_free(s);
 		goto out;
 	}
-	if ((BN_bin2bn(sigblob, INTBLOB_LEN, sig->r) == NULL) ||
-	    (BN_bin2bn(sigblob+ INTBLOB_LEN, INTBLOB_LEN, sig->s) == NULL)) {
+	if ((BN_bin2bn(sigblob, INTBLOB_LEN, r) == NULL) ||
+	    (BN_bin2bn(sigblob+ INTBLOB_LEN, INTBLOB_LEN, s) == NULL)) {
 		ret = SSH_ERR_LIBCRYPTO_ERROR;
+		BN_free(r);
+		BN_free(s);
 		goto out;
 	}
+	DSA_SIG_set0(sig, r, s);
+	r = s = NULL;
+	}
 
 	/* sha1 the data */
 	if ((ret = ssh_digest_memory(SSH_DIGEST_SHA1, data, datalen,
diff -Naur old/ssh-ecdsa.c new/ssh-ecdsa.c
--- old/ssh-ecdsa.c	2017-10-03 21:49:05.403827361 -1000
+++ new/ssh-ecdsa.c	2017-10-03 21:55:50.869718862 -1000
@@ -80,9 +80,14 @@
 		ret = SSH_ERR_ALLOC_FAIL;
 		goto out;
 	}
-	if ((ret = sshbuf_put_bignum2(bb, sig->r)) != 0 ||
-	    (ret = sshbuf_put_bignum2(bb, sig->s)) != 0)
+	{
+	const BIGNUM *r, *s;
+	ECDSA_SIG_get0(sig, &r, &s);
+	if ((ret = sshbuf_put_bignum2(bb, r)) != 0 ||
+	    (ret = sshbuf_put_bignum2(bb, s)) != 0) {
 		goto out;
+	}
+	}
 	if ((ret = sshbuf_put_cstring(b, sshkey_ssh_name_plain(key))) != 0 ||
 	    (ret = sshbuf_put_stringb(b, bb)) != 0)
 		goto out;
@@ -151,11 +156,27 @@
 		ret = SSH_ERR_ALLOC_FAIL;
 		goto out;
 	}
-	if (sshbuf_get_bignum2(sigbuf, sig->r) != 0 ||
-	    sshbuf_get_bignum2(sigbuf, sig->s) != 0) {
+	{
+	BIGNUM *r=NULL, *s=NULL;
+	if ((r = BN_new()) == NULL ||
+	    (s = BN_new()) == NULL) {
+		ret = SSH_ERR_ALLOC_FAIL;
+		goto out_rs;
+	}
+	if (sshbuf_get_bignum2(sigbuf, r) != 0 ||
+	    sshbuf_get_bignum2(sigbuf, s) != 0) {
 		ret = SSH_ERR_INVALID_FORMAT;
+		goto out_rs;
+	}
+	if (ECDSA_SIG_set0(sig, r, s) == 0) {
+		ret = SSH_ERR_LIBCRYPTO_ERROR;
+out_rs:
+		BN_free(r);
+		BN_free(s);
 		goto out;
 	}
+	r = s = NULL;
+	}
 	if (sshbuf_len(sigbuf) != 0) {
 		ret = SSH_ERR_UNEXPECTED_TRAILING_DATA;
 		goto out;
diff -Naur old/ssh-keygen.c new/ssh-keygen.c
--- old/ssh-keygen.c	2017-10-03 21:49:05.403827361 -1000
+++ new/ssh-keygen.c	2017-10-03 21:55:50.869718862 -1000
@@ -496,11 +496,33 @@
 
 	switch (key->type) {
 	case KEY_DSA:
-		buffer_get_bignum_bits(b, key->dsa->p);
-		buffer_get_bignum_bits(b, key->dsa->g);
-		buffer_get_bignum_bits(b, key->dsa->q);
-		buffer_get_bignum_bits(b, key->dsa->pub_key);
-		buffer_get_bignum_bits(b, key->dsa->priv_key);
+		{
+		BIGNUM *p=NULL, *g=NULL, *q=NULL, *pub_key=NULL, *priv_key=NULL;
+		if ((p=BN_new()) == NULL ||
+		    (g=BN_new()) == NULL ||
+		    (q=BN_new()) == NULL ||
+		    (pub_key=BN_new()) == NULL ||
+		    (priv_key=BN_new()) == NULL) {
+			BN_free(p);
+			BN_free(g);
+			BN_free(q);
+			BN_free(pub_key);
+			BN_free(priv_key);
+			return NULL;
+		}
+		buffer_get_bignum_bits(b, p);
+		buffer_get_bignum_bits(b, g);
+		buffer_get_bignum_bits(b, q);
+		buffer_get_bignum_bits(b, pub_key);
+		buffer_get_bignum_bits(b, priv_key);
+		if (DSA_set0_pqg(key->dsa, p, q, g) == 0 ||
+		    DSA_set0_key(key->dsa, pub_key, priv_key) == 0) {
+			fatal("failed to set DSA key");
+			BN_free(p); BN_free(g); BN_free(q);
+			BN_free(pub_key); BN_free(priv_key);
+			return NULL;
+		}
+		}
 		break;
 	case KEY_RSA:
 		if ((r = sshbuf_get_u8(b, &e1)) != 0 ||
@@ -517,16 +539,52 @@
 			e += e3;
 			debug("e %lx", e);
 		}
-		if (!BN_set_word(key->rsa->e, e)) {
+		{
+		BIGNUM *rsa_e = NULL;
+		BIGNUM *d=NULL, *n=NULL, *iqmp=NULL, *q=NULL, *p=NULL;
+		BIGNUM *dmp1=NULL, *dmq1=NULL; /* dummy input to set in RSA_set0_crt_params */
+		rsa_e = BN_new();
+		if (!rsa_e || !BN_set_word(rsa_e, e)) {
+			if (rsa_e) BN_free(rsa_e);
 			sshbuf_free(b);
 			sshkey_free(key);
 			return NULL;
 		}
-		buffer_get_bignum_bits(b, key->rsa->d);
-		buffer_get_bignum_bits(b, key->rsa->n);
-		buffer_get_bignum_bits(b, key->rsa->iqmp);
-		buffer_get_bignum_bits(b, key->rsa->q);
-		buffer_get_bignum_bits(b, key->rsa->p);
+		if ((d=BN_new()) == NULL ||
+		    (n=BN_new()) == NULL ||
+		    (iqmp=BN_new()) == NULL ||
+		    (q=BN_new()) == NULL ||
+		    (p=BN_new()) == NULL ||
+		    (dmp1=BN_new()) == NULL ||
+		    (dmq1=BN_new()) == NULL) {
+			BN_free(d); BN_free(n); BN_free(iqmp);
+			BN_free(q); BN_free(p);
+			BN_free(dmp1); BN_free(dmq1);
+			return NULL;
+		}
+		BN_clear(dmp1); BN_clear(dmq1);
+		buffer_get_bignum_bits(b, d);
+		buffer_get_bignum_bits(b, n);
+		buffer_get_bignum_bits(b, iqmp);
+		buffer_get_bignum_bits(b, q);
+		buffer_get_bignum_bits(b, p);
+		if (RSA_set0_key(key->rsa, n, rsa_e, d) == 0)
+			goto null;
+		n = d = NULL;
+		if (RSA_set0_factors(key->rsa, p, q) == 0)
+			goto null;
+		p = q = NULL;
+		/* dmp1, dmq1 should not be NULL for initial set0 */
+		if (RSA_set0_crt_params(key->rsa, dmp1, dmq1, iqmp) == 0) {
+ null:
+			fatal("Failed to set RSA parameters");
+			BN_free(d); BN_free(n); BN_free(iqmp);
+			BN_free(q); BN_free(p);
+			BN_free(dmp1); BN_free(dmq1);
+			return NULL;
+		}
+		dmp1 = dmq1 = iqmp = NULL;
+		}
 		if ((r = ssh_rsa_generate_additional_parameters(key)) != 0)
 			fatal("generate RSA parameters failed: %s", ssh_err(r));
 		break;
@@ -636,7 +694,7 @@
 		    identity_file);
 	}
 	fclose(fp);
-	switch (EVP_PKEY_type(pubkey->type)) {
+	switch (EVP_PKEY_type(EVP_PKEY_id(pubkey))) {
 	case EVP_PKEY_RSA:
 		if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
 			fatal("sshkey_new failed");
@@ -660,7 +718,7 @@
 #endif
 	default:
 		fatal("%s: unsupported pubkey type %d", __func__,
-		    EVP_PKEY_type(pubkey->type));
+		    EVP_PKEY_type(EVP_PKEY_id(pubkey)));
 	}
 	EVP_PKEY_free(pubkey);
 	return;
diff -Naur old/ssh-pkcs11-client.c new/ssh-pkcs11-client.c
--- old/ssh-pkcs11-client.c	2017-10-03 21:49:05.403827361 -1000
+++ new/ssh-pkcs11-client.c	2017-10-03 21:55:50.869718862 -1000
@@ -143,12 +143,13 @@
 static int
 wrap_key(RSA *rsa)
 {
-	static RSA_METHOD helper_rsa;
+	static RSA_METHOD *helper_rsa;
 
-	memcpy(&helper_rsa, RSA_get_default_method(), sizeof(helper_rsa));
-	helper_rsa.name = "ssh-pkcs11-helper";
-	helper_rsa.rsa_priv_enc = pkcs11_rsa_private_encrypt;
-	RSA_set_method(rsa, &helper_rsa);
+	if ((helper_rsa = RSA_meth_dup(RSA_get_default_method())) == NULL)
+		return (-1); /* XXX but caller isn't checking */
+	RSA_meth_set1_name(helper_rsa, "ssh-pkcs11-helper");
+	RSA_meth_set_priv_enc(helper_rsa, pkcs11_rsa_private_encrypt);
+	RSA_set_method(rsa, helper_rsa);
 	return (0);
 }
 
diff -Naur old/ssh-pkcs11.c new/ssh-pkcs11.c
--- old/ssh-pkcs11.c	2017-10-03 21:49:05.403827361 -1000
+++ new/ssh-pkcs11.c	2017-10-03 21:55:50.869718862 -1000
@@ -67,7 +67,7 @@
 	struct pkcs11_provider	*provider;
 	CK_ULONG		slotidx;
 	int			(*orig_finish)(RSA *rsa);
-	RSA_METHOD		rsa_method;
+	RSA_METHOD		*rsa_method;
 	char			*keyid;
 	int			keyid_len;
 };
@@ -326,13 +326,15 @@
 		k11->keyid = xmalloc(k11->keyid_len);
 		memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
 	}
-	k11->orig_finish = def->finish;
-	memcpy(&k11->rsa_method, def, sizeof(k11->rsa_method));
-	k11->rsa_method.name = "pkcs11";
-	k11->rsa_method.rsa_priv_enc = pkcs11_rsa_private_encrypt;
-	k11->rsa_method.rsa_priv_dec = pkcs11_rsa_private_decrypt;
-	k11->rsa_method.finish = pkcs11_rsa_finish;
-	RSA_set_method(rsa, &k11->rsa_method);
+	k11->orig_finish = RSA_meth_get_finish(def);
+
+	if ((k11->rsa_method = RSA_meth_new("pkcs11", RSA_meth_get_flags(def))) == NULL)
+		return -1;
+	RSA_meth_set_priv_enc(k11->rsa_method, pkcs11_rsa_private_encrypt);
+	RSA_meth_set_priv_dec(k11->rsa_method, pkcs11_rsa_private_decrypt);
+	RSA_meth_set_finish(k11->rsa_method, pkcs11_rsa_finish);
+
+	RSA_set_method(rsa, k11->rsa_method);
 	RSA_set_app_data(rsa, k11);
 	return (0);
 }
@@ -512,10 +514,19 @@
 			if ((rsa = RSA_new()) == NULL) {
 				error("RSA_new failed");
 			} else {
-				rsa->n = BN_bin2bn(attribs[1].pValue,
-				    attribs[1].ulValueLen, NULL);
-				rsa->e = BN_bin2bn(attribs[2].pValue,
-				    attribs[2].ulValueLen, NULL);
+				BIGNUM *n=NULL, *e=NULL;
+				n = BN_new();
+				e = BN_new();
+				if (n == NULL || e == NULL)
+					error("BN_new alloc failed");
+				if (BN_bin2bn(attribs[1].pValue,
+				      attribs[1].ulValueLen, n) == NULL ||
+				    BN_bin2bn(attribs[2].pValue,
+				      attribs[2].ulValueLen, e) == NULL)
+					error("BN_bin2bn failed");
+				if (RSA_set0_key(rsa, n, e, NULL) == 0)
+					error("RSA_set0_key failed");
+				n = e = NULL;
 			}
 		} else {
 			cp = attribs[2].pValue;
@@ -525,17 +536,20 @@
 			    == NULL) {
 				error("d2i_X509 failed");
 			} else if ((evp = X509_get_pubkey(x509)) == NULL ||
-			    evp->type != EVP_PKEY_RSA ||
-			    evp->pkey.rsa == NULL) {
+			    EVP_PKEY_id(evp) != EVP_PKEY_RSA ||
+			    EVP_PKEY_get0_RSA(evp) == NULL) {
 				debug("X509_get_pubkey failed or no rsa");
-			} else if ((rsa = RSAPublicKey_dup(evp->pkey.rsa))
+			} else if ((rsa = RSAPublicKey_dup(EVP_PKEY_get0_RSA(evp)))
 			    == NULL) {
 				error("RSAPublicKey_dup");
 			}
 			if (x509)
 				X509_free(x509);
 		}
-		if (rsa && rsa->n && rsa->e &&
+		{
+		const BIGNUM *n, *e;
+		RSA_get0_key(rsa, &n, &e, NULL);
+		if (rsa && n && e &&
 		    pkcs11_rsa_wrap(p, slotidx, &attribs[0], rsa) == 0) {
 			if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
 				fatal("sshkey_new failed");
@@ -555,6 +569,7 @@
 		} else if (rsa) {
 			RSA_free(rsa);
 		}
+		}
 		for (i = 0; i < 3; i++)
 			free(attribs[i].pValue);
 	}
diff -Naur old/ssh-rsa.c new/ssh-rsa.c
--- old/ssh-rsa.c	2017-10-03 21:49:05.403827361 -1000
+++ new/ssh-rsa.c	2017-10-03 22:06:32.005937158 -1000
@@ -99,13 +99,27 @@
 	}
 	rsa = key->rsa;
 
-	if ((BN_sub(aux, rsa->q, BN_value_one()) == 0) ||
-	    (BN_mod(rsa->dmq1, rsa->d, aux, ctx) == 0) ||
-	    (BN_sub(aux, rsa->p, BN_value_one()) == 0) ||
-	    (BN_mod(rsa->dmp1, rsa->d, aux, ctx) == 0)) {
+	{
+	const BIGNUM *q, *d, *p;
+	BIGNUM *dmq1=NULL, *dmp1=NULL;
+	if ((dmq1 = BN_new()) == NULL ||
+	    (dmp1 = BN_new()) == NULL ) {
+		r = SSH_ERR_ALLOC_FAIL;
+		goto out;
+	}
+	RSA_get0_key(rsa, NULL, NULL, &d);
+	RSA_get0_factors(rsa, &p, &q);
+	if ((BN_sub(aux, q, BN_value_one()) == 0) ||
+	    (BN_mod(dmq1, d, aux, ctx) == 0) ||
+	    (BN_sub(aux, p, BN_value_one()) == 0) ||
+	    (BN_mod(dmp1, d, aux, ctx) == 0) ||
+	     RSA_set0_crt_params(rsa, dmp1, dmq1, NULL) == 0) {
 		r = SSH_ERR_LIBCRYPTO_ERROR;
+		BN_clear_free(dmp1);
+		BN_clear_free(dmq1);
 		goto out;
 	}
+	}
 	r = 0;
  out:
 	BN_clear_free(aux);
@@ -136,7 +150,7 @@
 	if (key == NULL || key->rsa == NULL || hash_alg == -1 ||
 	    sshkey_type_plain(key->type) != KEY_RSA)
 		return SSH_ERR_INVALID_ARGUMENT;
-	if (BN_num_bits(key->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE)
+	if (RSA_bits(key->rsa) < SSH_RSA_MINIMUM_MODULUS_SIZE)
 		return SSH_ERR_KEY_LENGTH;
 	slen = RSA_size(key->rsa);
 	if (slen <= 0 || slen > SSHBUF_MAX_BIGNUM)
@@ -210,7 +224,7 @@
 	    sshkey_type_plain(key->type) != KEY_RSA ||
 	    sig == NULL || siglen == 0)
 		return SSH_ERR_INVALID_ARGUMENT;
-	if (BN_num_bits(key->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE)
+	if (RSA_bits(key->rsa) < SSH_RSA_MINIMUM_MODULUS_SIZE)
 		return SSH_ERR_KEY_LENGTH;
 
 	if ((b = sshbuf_from(sig, siglen)) == NULL)
diff -Naur old/sshkey.c new/sshkey.c
--- old/sshkey.c	2017-10-03 21:49:05.407160494 -1000
+++ new/sshkey.c	2017-10-03 22:16:31.124964276 -1000
@@ -264,10 +264,18 @@
 #ifdef WITH_OPENSSL
 	case KEY_RSA:
 	case KEY_RSA_CERT:
-		return BN_num_bits(k->rsa->n);
+#if OPENSSL_VERSION_NUMBER >= 0x10100000UL
+		return RSA_bits(k->rsa);
+#else
+		return RSA_bits(key->rsa);
+#endif
 	case KEY_DSA:
 	case KEY_DSA_CERT:
+#if OPENSSL_VERSION_NUMBER >= 0x10100000UL
+		return DSA_bits(k->dsa);
+#else
 		return BN_num_bits(k->dsa->p);
+#endif
 	case KEY_ECDSA:
 	case KEY_ECDSA_CERT:
 		return sshkey_curve_nid_to_bits(k->ecdsa_nid);
@@ -466,28 +474,55 @@
 #ifdef WITH_OPENSSL
 	case KEY_RSA:
 	case KEY_RSA_CERT:
+		{
+		BIGNUM *n=NULL, *e=NULL; /* just allocate */
 		if ((rsa = RSA_new()) == NULL ||
-		    (rsa->n = BN_new()) == NULL ||
-		    (rsa->e = BN_new()) == NULL) {
+		    (n = BN_new()) == NULL ||
+		    (e = BN_new()) == NULL) {
+			BN_free(n);
+			BN_free(e);
 			if (rsa != NULL)
 				RSA_free(rsa);
 			free(k);
 			return NULL;
 		}
+		BN_clear(n); BN_clear(e);
+		if (RSA_set0_key(rsa, n, e, NULL) == 0)
+			return NULL;
+		n = e = NULL;
+		}
 		k->rsa = rsa;
 		break;
 	case KEY_DSA:
 	case KEY_DSA_CERT:
+		{
+		BIGNUM *p=NULL, *q=NULL, *g=NULL, *pubkey=NULL; /* just allocate */
 		if ((dsa = DSA_new()) == NULL ||
-		    (dsa->p = BN_new()) == NULL ||
-		    (dsa->q = BN_new()) == NULL ||
-		    (dsa->g = BN_new()) == NULL ||
-		    (dsa->pub_key = BN_new()) == NULL) {
+		    (p = BN_new()) == NULL ||
+		    (q = BN_new()) == NULL ||
+		    (g = BN_new()) == NULL ||
+		    (pubkey = BN_new()) == NULL) {
+			BN_free(p);
+			BN_free(q);
+			BN_free(g);
+			BN_free(pubkey);
 			if (dsa != NULL)
 				DSA_free(dsa);
 			free(k);
 			return NULL;
 		}
+		if (DSA_set0_pqg(dsa, p, q, g) == 0) {
+			BN_free(p); BN_free(q); BN_free(g);
+			BN_free(pubkey);
+			return NULL;
+		}
+		p = q = g = NULL;
+		if (DSA_set0_key(dsa, pubkey, NULL) == 0) {
+			BN_free(pubkey);
+			return NULL;
+		}
+		pubkey = NULL;
+		}
 		k->dsa = dsa;
 		break;
 	case KEY_ECDSA:
@@ -523,6 +558,51 @@
 #ifdef WITH_OPENSSL
 	case KEY_RSA:
 	case KEY_RSA_CERT:
+#if OPENSSL_VERSION_NUMBER >= 0x10100000UL
+		/* Allocate BIGNUM. This is a mess.
+		   For OpenSSL 1.1.x API these shouldn't be mandatory,
+		   but some regression tests for non-NULL pointer of
+		   the data. */
+#define new_or_dup(bn, nbn) \
+		if (bn == NULL) { \
+			if ((nbn = BN_new()) == NULL) \
+				return SSH_ERR_ALLOC_FAIL; \
+		} else { \
+			/* otherwise use-after-free will occur */ \
+			if ((nbn = BN_dup(bn)) == NULL) \
+				return SSH_ERR_ALLOC_FAIL; \
+		}
+		{
+		const BIGNUM *d, *iqmp, *q, *p, *dmq1, *dmp1; /* allocate if NULL */
+		BIGNUM *nd, *niqmp, *nq, *np, *ndmq1, *ndmp1;
+
+		RSA_get0_key(k->rsa, NULL, NULL, &d);
+		RSA_get0_factors(k->rsa, &p, &q);
+		RSA_get0_crt_params(k->rsa, &dmp1, &dmq1, &iqmp);
+
+		new_or_dup(d, nd);
+		new_or_dup(iqmp, niqmp);
+		new_or_dup(q, nq);
+		new_or_dup(p, np);
+		new_or_dup(dmq1, ndmq1);
+		new_or_dup(dmp1, ndmp1);
+
+		if (RSA_set0_key(k->rsa, NULL, NULL, nd) == 0)
+			goto error1;
+		nd = NULL;
+		if (RSA_set0_factors(k->rsa, np, nq) == 0)
+			goto error1;
+		np = nq = NULL;
+		if (RSA_set0_crt_params(k->rsa, ndmp1, ndmq1, niqmp) == 0) {
+error1:
+			BN_free(nd);
+			BN_free(np); BN_free(nq);
+			BN_free(ndmp1); BN_free(ndmq1); BN_free(niqmp);
+			return SSH_ERR_LIBCRYPTO_ERROR;
+		}
+		ndmp1 = ndmq1 = niqmp = NULL;
+		}
+#else
 #define bn_maybe_alloc_failed(p) (p == NULL && (p = BN_new()) == NULL)
 		if (bn_maybe_alloc_failed(k->rsa->d) ||
 		    bn_maybe_alloc_failed(k->rsa->iqmp) ||
@@ -531,13 +611,28 @@
 		    bn_maybe_alloc_failed(k->rsa->dmq1) ||
 		    bn_maybe_alloc_failed(k->rsa->dmp1))
 			return SSH_ERR_ALLOC_FAIL;
+#endif
 		break;
 	case KEY_DSA:
 	case KEY_DSA_CERT:
+#if OPENSSL_VERSION_NUMBER >= 0x10100000UL
+		{
+		const BIGNUM *priv_key;
+		BIGNUM *npriv_key;
+		DSA_get0_key(k->dsa, NULL, &priv_key);
+		new_or_dup(priv_key, npriv_key);
+		if (DSA_set0_key(k->dsa, NULL, npriv_key) == 0) {
+			BN_free(npriv_key);
+			return SSH_ERR_LIBCRYPTO_ERROR;
+		}
+		}
+#else
 		if (bn_maybe_alloc_failed(k->dsa->priv_key))
 			return SSH_ERR_ALLOC_FAIL;
+#endif
 		break;
 #undef bn_maybe_alloc_failed
+#undef new_or_dup
 	case KEY_ECDSA:
 	case KEY_ECDSA_CERT:
 		/* Cannot do anything until we know the group */
@@ -655,16 +750,34 @@
 #ifdef WITH_OPENSSL
 	case KEY_RSA_CERT:
 	case KEY_RSA:
-		return a->rsa != NULL && b->rsa != NULL &&
-		    BN_cmp(a->rsa->e, b->rsa->e) == 0 &&
-		    BN_cmp(a->rsa->n, b->rsa->n) == 0;
+		{
+		const BIGNUM *a_e, *b_e, *a_n, *b_n;
+		const BIGNUM *a_d, *b_d;
+		if (a->rsa == NULL) return 0;
+		if (b->rsa == NULL) return 0;
+		RSA_get0_key(a->rsa, &a_n, &a_e, &a_d);
+		RSA_get0_key(b->rsa, &b_n, &b_e, &b_d);
+		return 
+		    BN_cmp(a_e, b_e) == 0 &&
+		    BN_cmp(a_n, b_n) == 0;
+		}
 	case KEY_DSA_CERT:
 	case KEY_DSA:
-		return a->dsa != NULL && b->dsa != NULL &&
-		    BN_cmp(a->dsa->p, b->dsa->p) == 0 &&
-		    BN_cmp(a->dsa->q, b->dsa->q) == 0 &&
-		    BN_cmp(a->dsa->g, b->dsa->g) == 0 &&
-		    BN_cmp(a->dsa->pub_key, b->dsa->pub_key) == 0;
+		{
+		const BIGNUM *a_p, *a_q, *a_g, *a_pub_key;
+		const BIGNUM *b_p, *b_q, *b_g, *b_pub_key;
+		if (a->dsa == NULL) return 0;
+		if (b->dsa == NULL) return 0;
+		DSA_get0_pqg(a->dsa, &a_p, &a_q, &a_g);
+		DSA_get0_pqg(b->dsa, &b_p, &b_q, &b_g);
+		DSA_get0_key(a->dsa, &a_pub_key, NULL);
+		DSA_get0_key(b->dsa, &b_pub_key, NULL);
+		return 
+		    BN_cmp(a_p, b_p) == 0 &&
+		    BN_cmp(a_q, b_q) == 0 &&
+		    BN_cmp(a_g, b_g) == 0 &&
+		    BN_cmp(a_pub_key, b_pub_key) == 0;
+		}
 # ifdef OPENSSL_HAS_ECC
 	case KEY_ECDSA_CERT:
 	case KEY_ECDSA:
@@ -742,12 +855,17 @@
 	case KEY_DSA:
 		if (key->dsa == NULL)
 			return SSH_ERR_INVALID_ARGUMENT;
+		{
+		const BIGNUM *p, *q, *g, *pub_key;
+		DSA_get0_pqg(key->dsa, &p, &q, &g);
+		DSA_get0_key(key->dsa, &pub_key, NULL);
 		if ((ret = sshbuf_put_cstring(b, typename)) != 0 ||
-		    (ret = sshbuf_put_bignum2(b, key->dsa->p)) != 0 ||
-		    (ret = sshbuf_put_bignum2(b, key->dsa->q)) != 0 ||
-		    (ret = sshbuf_put_bignum2(b, key->dsa->g)) != 0 ||
-		    (ret = sshbuf_put_bignum2(b, key->dsa->pub_key)) != 0)
+		    (ret = sshbuf_put_bignum2(b, p)) != 0 ||
+		    (ret = sshbuf_put_bignum2(b, q)) != 0 ||
+		    (ret = sshbuf_put_bignum2(b, g)) != 0 ||
+		    (ret = sshbuf_put_bignum2(b, pub_key)) != 0)
 			return ret;
+		}
 		break;
 # ifdef OPENSSL_HAS_ECC
 	case KEY_ECDSA:
@@ -763,10 +881,14 @@
 	case KEY_RSA:
 		if (key->rsa == NULL)
 			return SSH_ERR_INVALID_ARGUMENT;
+		{
+		const BIGNUM *e, *n;
+		RSA_get0_key(key->rsa, &n, &e, NULL);
 		if ((ret = sshbuf_put_cstring(b, typename)) != 0 ||
-		    (ret = sshbuf_put_bignum2(b, key->rsa->e)) != 0 ||
-		    (ret = sshbuf_put_bignum2(b, key->rsa->n)) != 0)
+		    (ret = sshbuf_put_bignum2(b, e)) != 0 ||
+		    (ret = sshbuf_put_bignum2(b, n)) != 0)
 			return ret;
+		}
 		break;
 #endif /* WITH_OPENSSL */
 	case KEY_ED25519:
@@ -1643,13 +1765,32 @@
 	case KEY_DSA_CERT:
 		if ((n = sshkey_new(k->type)) == NULL)
 			return SSH_ERR_ALLOC_FAIL;
-		if ((BN_copy(n->dsa->p, k->dsa->p) == NULL) ||
-		    (BN_copy(n->dsa->q, k->dsa->q) == NULL) ||
-		    (BN_copy(n->dsa->g, k->dsa->g) == NULL) ||
-		    (BN_copy(n->dsa->pub_key, k->dsa->pub_key) == NULL)) {
+		{
+		const BIGNUM *p, *q, *g, *pub_key, *priv_key;
+		BIGNUM *cp=NULL, *cq=NULL, *cg=NULL, *cpub_key=NULL;
+		DSA_get0_pqg(k->dsa, &p, &q, &g);
+		DSA_get0_key(k->dsa, &pub_key, &priv_key);
+		if ((cp = BN_dup(p)) == NULL ||
+		    (cq = BN_dup(q)) == NULL ||
+		    (cg = BN_dup(g)) == NULL ||
+		    (cpub_key = BN_dup(pub_key)) == NULL) {
+			BN_free(cp); BN_free(cq); BN_free(cg);
+			BN_free(cpub_key);
 			sshkey_free(n);
 			return SSH_ERR_ALLOC_FAIL;
 		}
+		if (DSA_set0_pqg(n->dsa, cp, cq, cg) == 0)
+			goto error1;
+		cp = cq = cg = NULL;
+		if (DSA_set0_key(n->dsa, cpub_key, NULL) == 0) {
+error1:
+			BN_free(cp); BN_free(cq); BN_free(cg);
+			BN_free(cpub_key);
+			sshkey_free(n);
+			return SSH_ERR_LIBCRYPTO_ERROR;
+		}
+		cpub_key = NULL;
+		}
 		break;
 # ifdef OPENSSL_HAS_ECC
 	case KEY_ECDSA:
@@ -1673,11 +1814,23 @@
 	case KEY_RSA_CERT:
 		if ((n = sshkey_new(k->type)) == NULL)
 			return SSH_ERR_ALLOC_FAIL;
-		if ((BN_copy(n->rsa->n, k->rsa->n) == NULL) ||
-		    (BN_copy(n->rsa->e, k->rsa->e) == NULL)) {
+		{
+		const BIGNUM *nn, *e, *d;
+		BIGNUM *cn=NULL, *ce=NULL;
+		RSA_get0_key(k->rsa, &nn, &e, &d);
+		if ((cn = BN_dup(nn)) == NULL ||
+		    (ce = BN_dup(e)) == NULL ) {
+			BN_free(cn); BN_free(ce);
 			sshkey_free(n);
 			return SSH_ERR_ALLOC_FAIL;
 		}
+		if (RSA_set0_key(n->rsa, cn, ce, NULL) == 0) {
+			BN_free(cn); BN_free(ce);
+			sshkey_free(n);
+			return SSH_ERR_LIBCRYPTO_ERROR;
+		}
+		cn = ce = NULL;
+		}
 		break;
 #endif /* WITH_OPENSSL */
 	case KEY_ED25519:
@@ -1875,12 +2028,27 @@
 			ret = SSH_ERR_ALLOC_FAIL;
 			goto out;
 		}
-		if (sshbuf_get_bignum2(b, key->rsa->e) != 0 ||
-		    sshbuf_get_bignum2(b, key->rsa->n) != 0) {
+		{
+		BIGNUM *e=NULL, *n=NULL;
+		if ((e = BN_new()) == NULL ||
+		    (n = BN_new()) == NULL ) {
+			ret = SSH_ERR_ALLOC_FAIL;
+			BN_free(e); BN_free(n);
+			goto out;
+		}
+		if (sshbuf_get_bignum2(b, e) != 0 ||
+		    sshbuf_get_bignum2(b, n) != 0) {
 			ret = SSH_ERR_INVALID_FORMAT;
+			BN_free(e); BN_free(n);
 			goto out;
 		}
-		if (BN_num_bits(key->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
+		if (RSA_set0_key(key->rsa, n, e, NULL) == 0) {
+			BN_free(e); BN_free(n);
+			return SSH_ERR_LIBCRYPTO_ERROR;
+		}
+		n = e = NULL;
+		}
+		if (RSA_bits(key->rsa) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
 			ret = SSH_ERR_KEY_LENGTH;
 			goto out;
 		}
@@ -1900,13 +2068,36 @@
 			ret = SSH_ERR_ALLOC_FAIL;
 			goto out;
 		}
-		if (sshbuf_get_bignum2(b, key->dsa->p) != 0 ||
-		    sshbuf_get_bignum2(b, key->dsa->q) != 0 ||
-		    sshbuf_get_bignum2(b, key->dsa->g) != 0 ||
-		    sshbuf_get_bignum2(b, key->dsa->pub_key) != 0) {
+		{
+		BIGNUM *p=NULL, *q=NULL, *g=NULL, *pub_key=NULL;
+		if ((p = BN_new()) == NULL ||
+		    (q = BN_new()) == NULL ||
+		    (g = BN_new()) == NULL ||
+		    (pub_key = BN_new()) == NULL) {
+			ret = SSH_ERR_ALLOC_FAIL;
+			goto error1;
+		}
+		if (sshbuf_get_bignum2(b, p) != 0 ||
+		    sshbuf_get_bignum2(b, q) != 0 ||
+		    sshbuf_get_bignum2(b, g) != 0 ||
+		    sshbuf_get_bignum2(b, pub_key) != 0) {
 			ret = SSH_ERR_INVALID_FORMAT;
+			goto error1;
+		}
+		if (DSA_set0_pqg(key->dsa, p, q, g) == 0) {
+			ret = SSH_ERR_LIBCRYPTO_ERROR;
+			goto error1;
+		}
+		p = q = g = NULL;
+		if (DSA_set0_key(key->dsa, pub_key, NULL) == 0) {
+			ret = SSH_ERR_LIBCRYPTO_ERROR;
+error1:
+			BN_free(p); BN_free(q); BN_free(g);
+			BN_free(pub_key);
 			goto out;
 		}
+		pub_key = NULL;
+		}
 #ifdef DEBUG_PK
 		DSA_print_fp(stderr, key->dsa, 8);
 #endif
@@ -2140,26 +2331,63 @@
 			goto fail;
 		/* FALLTHROUGH */
 	case KEY_RSA:
-		if ((pk->rsa = RSA_new()) == NULL ||
-		    (pk->rsa->e = BN_dup(k->rsa->e)) == NULL ||
-		    (pk->rsa->n = BN_dup(k->rsa->n)) == NULL) {
+		if ((pk->rsa = RSA_new()) == NULL ){
 			ret = SSH_ERR_ALLOC_FAIL;
 			goto fail;
 			}
+		{
+		const BIGNUM *ke, *kn;
+		BIGNUM *pke=NULL, *pkn=NULL;
+		RSA_get0_key(k->rsa, &kn, &ke, NULL);
+		 if ((pke = BN_dup(ke)) == NULL ||
+		     (pkn = BN_dup(kn)) == NULL) {
+			ret = SSH_ERR_ALLOC_FAIL;
+			BN_free(pke); BN_free(pkn);
+			goto fail;
+			}
+		if (RSA_set0_key(pk->rsa, pkn, pke, NULL) == 0) {
+			ret = SSH_ERR_LIBCRYPTO_ERROR;
+			BN_free(pke); BN_free(pkn);
+			goto fail;
+		}
+		pkn = pke = NULL;
+		}
 		break;
 	case KEY_DSA_CERT:
 		if ((ret = sshkey_cert_copy(k, pk)) != 0)
 			goto fail;
 		/* FALLTHROUGH */
 	case KEY_DSA:
-		if ((pk->dsa = DSA_new()) == NULL ||
-		    (pk->dsa->p = BN_dup(k->dsa->p)) == NULL ||
-		    (pk->dsa->q = BN_dup(k->dsa->q)) == NULL ||
-		    (pk->dsa->g = BN_dup(k->dsa->g)) == NULL ||
-		    (pk->dsa->pub_key = BN_dup(k->dsa->pub_key)) == NULL) {
+		if ((pk->dsa = DSA_new()) == NULL ) {
 			ret = SSH_ERR_ALLOC_FAIL;
 			goto fail;
 		}
+		{
+		const BIGNUM *kp, *kq, *kg, *kpub_key;
+		BIGNUM *pkp=NULL, *pkq=NULL, *pkg=NULL, *pkpub_key=NULL;
+		DSA_get0_pqg(k->dsa, &kp, &kq, &kg);
+		DSA_get0_key(k->dsa, &kpub_key, NULL);
+		if ((pkp = BN_dup(kp)) == NULL ||
+		    (pkq = BN_dup(kq)) == NULL ||
+		    (pkg = BN_dup(kg)) == NULL ||
+		    (pkpub_key = BN_dup(kpub_key)) == NULL) {
+			ret = SSH_ERR_ALLOC_FAIL;
+			goto error1;
+		}
+		if (DSA_set0_pqg(pk->dsa, pkp, pkq, pkg) == 0) {
+			ret = SSH_ERR_LIBCRYPTO_ERROR;
+			goto error1;
+		}
+		pkp = pkq = pkg = NULL;
+		if (DSA_set0_key(pk->dsa, pkpub_key, NULL) == 0) {
+			ret = SSH_ERR_LIBCRYPTO_ERROR;
+error1:
+			BN_free(pkp); BN_free(pkq); BN_free(pkg);
+			BN_free(pkpub_key);
+			goto fail;
+		}
+		pkpub_key = NULL;
+		}
 		break;
 	case KEY_ECDSA_CERT:
 		if ((ret = sshkey_cert_copy(k, pk)) != 0)
@@ -2281,11 +2509,17 @@
 	switch (k->type) {
 #ifdef WITH_OPENSSL
 	case KEY_DSA_CERT:
-		if ((ret = sshbuf_put_bignum2(cert, k->dsa->p)) != 0 ||
-		    (ret = sshbuf_put_bignum2(cert, k->dsa->q)) != 0 ||
-		    (ret = sshbuf_put_bignum2(cert, k->dsa->g)) != 0 ||
-		    (ret = sshbuf_put_bignum2(cert, k->dsa->pub_key)) != 0)
+		{
+		const BIGNUM *p, *q, *g, *pub_key;
+		DSA_get0_pqg(k->dsa, &p, &q, &g);
+		DSA_get0_key(k->dsa, &pub_key, NULL);
+		if ((ret = sshbuf_put_bignum2(cert, p)) != 0 ||
+		    (ret = sshbuf_put_bignum2(cert, q)) != 0 ||
+		    (ret = sshbuf_put_bignum2(cert, g)) != 0 ||
+		    (ret = sshbuf_put_bignum2(cert, pub_key)) != 0) {
 			goto out;
+		}
+		}
 		break;
 # ifdef OPENSSL_HAS_ECC
 	case KEY_ECDSA_CERT:
@@ -2298,9 +2532,15 @@
 		break;
 # endif /* OPENSSL_HAS_ECC */
 	case KEY_RSA_CERT:
-		if ((ret = sshbuf_put_bignum2(cert, k->rsa->e)) != 0 ||
-		    (ret = sshbuf_put_bignum2(cert, k->rsa->n)) != 0)
+		{
+		const BIGNUM *e, *n;
+		RSA_get0_key(k->rsa, &n, &e, NULL);
+		if (n == NULL || e == NULL ||
+		    (ret = sshbuf_put_bignum2(cert, e)) != 0 ||
+		    (ret = sshbuf_put_bignum2(cert, n)) != 0) {
 			goto out;
+		}
+		}
 		break;
 #endif /* WITH_OPENSSL */
 	case KEY_ED25519_CERT:
@@ -2474,42 +2714,67 @@
 	switch (key->type) {
 #ifdef WITH_OPENSSL
 	case KEY_RSA:
-		if ((r = sshbuf_put_bignum2(b, key->rsa->n)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->rsa->e)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->rsa->d)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->rsa->iqmp)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->rsa->p)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->rsa->q)) != 0)
+		{
+		const BIGNUM *n, *e, *d, *iqmp, *p, *q;
+		RSA_get0_key(key->rsa, &n, &e, &d);
+		RSA_get0_crt_params(key->rsa, NULL, NULL, &iqmp);
+		RSA_get0_factors(key->rsa, &p, &q);
+		if ((r = sshbuf_put_bignum2(b, n)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, e)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, d)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, iqmp)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, p)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, q)) != 0) {
 			goto out;
+		}
+		}
 		break;
 	case KEY_RSA_CERT:
 		if (key->cert == NULL || sshbuf_len(key->cert->certblob) == 0) {
 			r = SSH_ERR_INVALID_ARGUMENT;
 			goto out;
 		}
+		{
+		const BIGNUM *d, *iqmp, *p, *q;
+		RSA_get0_key(key->rsa, NULL, NULL, &d);
+		RSA_get0_crt_params(key->rsa, NULL, NULL, &iqmp);
+		RSA_get0_factors(key->rsa, &p, &q);
 		if ((r = sshbuf_put_stringb(b, key->cert->certblob)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->rsa->d)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->rsa->iqmp)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->rsa->p)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->rsa->q)) != 0)
+		    (r = sshbuf_put_bignum2(b, d)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, iqmp)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, p)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, q)) != 0) {
 			goto out;
+		}
+		}
 		break;
 	case KEY_DSA:
-		if ((r = sshbuf_put_bignum2(b, key->dsa->p)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->dsa->q)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->dsa->g)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->dsa->pub_key)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->dsa->priv_key)) != 0)
+		{
+		const BIGNUM *p, *q, *g, *pub_key, *priv_key;
+		DSA_get0_pqg(key->dsa, &p, &q, &g);
+		DSA_get0_key(key->dsa, &pub_key, &priv_key);
+		if ((r = sshbuf_put_bignum2(b, p)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, q)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, g)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, pub_key)) != 0 ||
+		    (r = sshbuf_put_bignum2(b, priv_key)) != 0) {
 			goto out;
+		}
+		}
 		break;
 	case KEY_DSA_CERT:
 		if (key->cert == NULL || sshbuf_len(key->cert->certblob) == 0) {
 			r = SSH_ERR_INVALID_ARGUMENT;
 			goto out;
 		}
+		{
+		const BIGNUM *priv_key;
+		DSA_get0_key(key->dsa, NULL, &priv_key);
 		if ((r = sshbuf_put_stringb(b, key->cert->certblob)) != 0 ||
-		    (r = sshbuf_put_bignum2(b, key->dsa->priv_key)) != 0)
+		    (r = sshbuf_put_bignum2(b, priv_key)) != 0) {
 			goto out;
+		}
+		}
 		break;
 # ifdef OPENSSL_HAS_ECC
 	case KEY_ECDSA:
@@ -2585,18 +2850,61 @@
 			r = SSH_ERR_ALLOC_FAIL;
 			goto out;
 		}
-		if ((r = sshbuf_get_bignum2(buf, k->dsa->p)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->dsa->q)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->dsa->g)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->dsa->pub_key)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->dsa->priv_key)) != 0)
+		{
+		BIGNUM *p=NULL, *q=NULL, *g=NULL, *pub_key=NULL, *priv_key=NULL;
+		if ((p = BN_new()) == NULL ||
+		    (q = BN_new()) == NULL ||
+		    (g = BN_new()) == NULL ||
+		    (pub_key = BN_new()) == NULL ||
+		    (priv_key = BN_new()) == NULL) {
+			r = SSH_ERR_ALLOC_FAIL;
+			goto error1;
+		}
+		if (p == NULL || q == NULL || g == NULL ||
+		    pub_key == NULL || priv_key == NULL ||
+		    (r = sshbuf_get_bignum2(buf, p)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, q)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, g)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, pub_key)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, priv_key)) != 0) {
+			goto error1;
+		}
+		if (DSA_set0_pqg(k->dsa, p, q, g) == 0) {
+			r = SSH_ERR_LIBCRYPTO_ERROR;
+			goto error1;
+		}
+		p = q = g = NULL;
+		if (DSA_set0_key(k->dsa, pub_key, priv_key) == 0) {
+			r = SSH_ERR_LIBCRYPTO_ERROR;
+error1:
+			BN_free(p); BN_free(q); BN_free(g);
+			BN_free(pub_key); BN_free(priv_key);
 			goto out;
+		}
+		pub_key = priv_key = NULL;
+		}
 		break;
 	case KEY_DSA_CERT:
-		if ((r = sshkey_froms(buf, &k)) != 0 ||
+		{
+		BIGNUM *priv_key=NULL;
+		if ((priv_key = BN_new()) == NULL) {
+			r = SSH_ERR_ALLOC_FAIL;
+			goto out;
+		}
+		if (priv_key == NULL ||
+		    (r = sshkey_froms(buf, &k)) != 0 ||
 		    (r = sshkey_add_private(k)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->dsa->priv_key)) != 0)
+		    (r = sshbuf_get_bignum2(buf, priv_key)) != 0) {
+			BN_free(priv_key);
+			goto out;
+		}
+		if (DSA_set0_key(k->dsa, NULL, priv_key) == 0) {
+			r = SSH_ERR_LIBCRYPTO_ERROR;
+			BN_free(priv_key);
 			goto out;
+		}
+		priv_key = NULL;
+		}
 		break;
 # ifdef OPENSSL_HAS_ECC
 	case KEY_ECDSA:
@@ -2655,29 +2963,104 @@
 			r = SSH_ERR_ALLOC_FAIL;
 			goto out;
 		}
-		if ((r = sshbuf_get_bignum2(buf, k->rsa->n)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->rsa->e)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->rsa->d)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->rsa->iqmp)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->rsa->p)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->rsa->q)) != 0 ||
-		    (r = ssh_rsa_generate_additional_parameters(k)) != 0)
+		{
+		BIGNUM *n=NULL, *e=NULL, *d=NULL, *iqmp=NULL, *p=NULL, *q=NULL;
+		BIGNUM *dmp1=NULL, *dmq1=NULL; /* dummy for RSA_set0_crt_params */
+		if ((n = BN_new()) == NULL ||
+		    (e = BN_new()) == NULL ||
+		    (d = BN_new()) == NULL ||
+		    (iqmp = BN_new()) == NULL ||
+		    (p = BN_new()) == NULL ||
+		    (q = BN_new()) == NULL ||
+		    (dmp1 = BN_new()) == NULL ||
+		    (dmq1 = BN_new()) == NULL) {
+			r = SSH_ERR_ALLOC_FAIL;
+			goto error2;
+		}
+		BN_clear(dmp1); BN_clear(dmq1);
+		if ((r = sshbuf_get_bignum2(buf, n)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, e)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, d)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, iqmp)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, p)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, q)) != 0) {
+			goto error2;
+		}
+		if (RSA_set0_key(k->rsa, n, e, d) == 0) {
+			r = SSH_ERR_LIBCRYPTO_ERROR;
+			goto error2;
+		}
+		n = e = d = NULL;
+		/* dmp1,dmpq1 should be non NULL to set iqmp value */
+		if (RSA_set0_crt_params(k->rsa, dmp1, dmq1, iqmp) == 0) {
+			r = SSH_ERR_LIBCRYPTO_ERROR;
+			goto error2;
+		}
+		dmp1 = dmq1 = iqmp = NULL;
+		if (RSA_set0_factors(k->rsa, p, q) == 0) {
+			r = SSH_ERR_LIBCRYPTO_ERROR;
+ error2:
+			BN_free(n); BN_free(e); BN_free(d);
+			BN_free(iqmp);
+			BN_free(p); BN_free(q);
+			BN_free(dmp1); BN_free(dmq1);
+			goto out;
+		}
+		p = q = NULL;
+		if ((r = ssh_rsa_generate_additional_parameters(k)) != 0) {
 			goto out;
-		if (BN_num_bits(k->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
+		}
+		}
+		if (RSA_bits(k->rsa) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
 			r = SSH_ERR_KEY_LENGTH;
 			goto out;
 		}
 		break;
 	case KEY_RSA_CERT:
+		{
+		BIGNUM *d=NULL, *iqmp=NULL, *p=NULL, *q=NULL;
+		BIGNUM *dmp1=NULL, *dmq1=NULL; /* dummy for RSA_set0_crt_params */
+		if ((d = BN_new()) == NULL ||
+		    (iqmp = BN_new()) == NULL ||
+		    (p = BN_new()) == NULL ||
+		    (q = BN_new()) == NULL ||
+		    (dmp1 = BN_new()) == NULL ||
+		    (dmq1 = BN_new()) == NULL) {
+			r = SSH_ERR_ALLOC_FAIL;
+			goto error3;
+		}
+		BN_clear(dmp1); BN_clear(dmq1);
 		if ((r = sshkey_froms(buf, &k)) != 0 ||
 		    (r = sshkey_add_private(k)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->rsa->d)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->rsa->iqmp)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->rsa->p)) != 0 ||
-		    (r = sshbuf_get_bignum2(buf, k->rsa->q)) != 0 ||
-		    (r = ssh_rsa_generate_additional_parameters(k)) != 0)
+		    (r = sshbuf_get_bignum2(buf, d)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, iqmp)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, p)) != 0 ||
+		    (r = sshbuf_get_bignum2(buf, q)) != 0) {
+			goto error3;
+		}
+		if (RSA_set0_key(k->rsa, NULL, NULL, d) == 0) {
+			r = SSH_ERR_LIBCRYPTO_ERROR;
+			goto error3;
+		}
+		/* dmp1,dmpq1 should be non NULL to set value */
+		if (RSA_set0_crt_params(k->rsa, dmp1, dmq1, iqmp) == 0) {
+			r = SSH_ERR_LIBCRYPTO_ERROR;
+			goto error3;
+		}
+		dmp1 = dmq1 = iqmp = NULL;
+		if (RSA_set0_factors(k->rsa, p, q) == 0) {
+			r = SSH_ERR_LIBCRYPTO_ERROR;
+ error3:
+			BN_free(d); BN_free(iqmp);
+			BN_free(p); BN_free(q);
+			BN_free(dmp1); BN_free(dmq1);
 			goto out;
-		if (BN_num_bits(k->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
+		}
+		p = q = NULL;
+		if ((r = ssh_rsa_generate_additional_parameters(k)) != 0)
+			goto out;
+		}
+		if (RSA_bits(k->rsa) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
 			r = SSH_ERR_KEY_LENGTH;
 			goto out;
 		}
@@ -3395,7 +3778,6 @@
 		switch (pem_reason) {
 		case EVP_R_BAD_DECRYPT:
 			return SSH_ERR_KEY_WRONG_PASSPHRASE;
-		case EVP_R_BN_DECODE_ERROR:
 		case EVP_R_DECODE_ERROR:
 #ifdef EVP_R_PRIVATE_KEY_DECODE_ERROR
 		case EVP_R_PRIVATE_KEY_DECODE_ERROR:
@@ -3460,7 +3842,7 @@
 		r = convert_libcrypto_error();
 		goto out;
 	}
-	if (pk->type == EVP_PKEY_RSA &&
+	if (EVP_PKEY_id(pk) == EVP_PKEY_RSA &&
 	    (type == KEY_UNSPEC || type == KEY_RSA)) {
 		if ((prv = sshkey_new(KEY_UNSPEC)) == NULL) {
 			r = SSH_ERR_ALLOC_FAIL;
@@ -3475,11 +3857,11 @@
 			r = SSH_ERR_LIBCRYPTO_ERROR;
 			goto out;
 		}
-		if (BN_num_bits(prv->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
+		if (RSA_bits(prv->rsa) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
 			r = SSH_ERR_KEY_LENGTH;
 			goto out;
 		}
-	} else if (pk->type == EVP_PKEY_DSA &&
+	} else if (EVP_PKEY_id(pk) == EVP_PKEY_DSA &&
 	    (type == KEY_UNSPEC || type == KEY_DSA)) {
 		if ((prv = sshkey_new(KEY_UNSPEC)) == NULL) {
 			r = SSH_ERR_ALLOC_FAIL;
@@ -3491,7 +3873,7 @@
 		DSA_print_fp(stderr, prv->dsa, 8);
 #endif
 #ifdef OPENSSL_HAS_ECC
-	} else if (pk->type == EVP_PKEY_EC &&
+	} else if (EVP_PKEY_id(pk) == EVP_PKEY_EC &&
 	    (type == KEY_UNSPEC || type == KEY_ECDSA)) {
 		if ((prv = sshkey_new(KEY_UNSPEC)) == NULL) {
 			r = SSH_ERR_ALLOC_FAIL;