diff --git a/board/alix/ROOTFS b/board/alix/ROOTFS
index 0bbf05b..c890213 100644
--- a/board/alix/ROOTFS
+++ b/board/alix/ROOTFS
@@ -26,3 +26,4 @@ file
 iana-etc
 btrfs-progs
 dosfstools
+openssh
diff --git a/board/rpi3/ROOTFS b/board/rpi3/ROOTFS
index 1d59975..490dec9 100644
--- a/board/rpi3/ROOTFS
+++ b/board/rpi3/ROOTFS
@@ -30,3 +30,4 @@ iana-etc
 btrfs-progs
 dosfstools
 kbd
+openssh
diff --git a/pkg/openssh/0001.patch b/pkg/openssh/0001.patch
new file mode 100644
index 0000000..3b604bd
--- /dev/null
+++ b/pkg/openssh/0001.patch
@@ -0,0 +1,1989 @@
+Submitted by:            Bruce Dubbs (bdubbs@linuxfromscratch.org)
+Date:                    2017-10-08
+Initial Package Version: 7.6p1
+Upstream Status:         Pending
+Origin:                  https://git.archlinux.org/svntogit/packages.git/plain/trunk/openssl-1.1.0.patch?h=packages/openssh
+Description:             Fixes build issues with OpenSSL-1.1.0.
+
+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;
diff --git a/pkg/openssh/build b/pkg/openssh/build
new file mode 100644
index 0000000..b0c3543
--- /dev/null
+++ b/pkg/openssh/build
@@ -0,0 +1,46 @@
+VERSION="7.6p1"
+SRCDIR="openssh-${VERSION}"
+TARBALL="${SRCDIR}.tar.gz"
+URL="https://cloudflare.cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable"
+SHA256SUM="a323caeeddfe145baaa0db16e98d784b1fbc7dd436a6bf1f479dfd5cd1d21723"
+DEPENDS="openssl zlib"
+
+prepare() {
+	apply_patches
+}
+
+build() {
+	local SOURCE="$1"
+	local BUILD="$2"
+
+	$SOURCE/configure --prefix="" --host="$TARGET" --sbindir=/bin \
+			  --with-pie --without-pam --without-stackprotect \
+			  --without-selinux --disable-strip \
+			  --with-sandbox=seccomp_filter \
+			  --with-privsep-path=/var/lib/sshd
+
+	make -j $NUMJOBS
+}
+
+deploy() {
+	local SOURCE="$1"
+	local BUILD="$2"
+	local DEPLOY="$3"
+
+	make DESTDIR="$DEPLOY" install
+
+	mkdir -p "$DEPLOY/var/lib/sshd"
+	chmod 700 "$DEPLOY/var/lib/sshd"
+
+	rm -r "$DEPLOY/share"
+
+	for i in ${DEPLOY}/bin/* ${DEPLOY}/libexec/*; do
+		if [ -f $i ]; then
+			${TARGET}-strip --discard-all $i
+		fi
+	done
+
+	unset -v i
+
+	install -v -m755 "$SOURCE/contrib/ssh-copy-id" "$DEPLOY/bin"
+}
diff --git a/pkg/rootfs/etc/group b/pkg/rootfs/etc/group
index 82d874c..6fa18a7 100644
--- a/pkg/rootfs/etc/group
+++ b/pkg/rootfs/etc/group
@@ -20,4 +20,5 @@ render:x:18:
 wheel:x:19:
 input:x:24:
 mail:x:34:
+sshd:x:50:
 nogroup:x:99:
diff --git a/pkg/rootfs/etc/passwd b/pkg/rootfs/etc/passwd
index 757a665..9048da3 100644
--- a/pkg/rootfs/etc/passwd
+++ b/pkg/rootfs/etc/passwd
@@ -2,4 +2,5 @@ root:x:0:0:root:/root:/bin/bash
 bin:x:1:1:bin:/dev/null:/bin/false
 daemon:x:6:6:Daemon User:/dev/null:/bin/false
 messagebus:x:18:18:D-Bus Message Daemon User:/var/run/dbus:/bin/false
+sshd:x:50:50:sshd PrivSep:/var/lib/sshd:/bin/false
 nobody:x:99:99:Unprivileged User:/dev/null:/bin/false