openbsd-compat/libressl-api-compat.c - third_party/openssh-portable - Git at Google

 /* $OpenBSD: dsa_lib.c,v 1.29 2018/04/14 07:09:21 tb Exp $ */
 /* $OpenBSD: rsa_lib.c,v 1.37 2018/04/14 07:09:21 tb Exp $ */
 /* $OpenBSD: evp_lib.c,v 1.17 2018/09/12 06:35:38 djm Exp $ */
 /* $OpenBSD: dh_lib.c,v 1.32 2018/05/02 15:48:38 tb Exp $ */
 /* $OpenBSD: p_lib.c,v 1.24 2018/05/30 15:40:50 tb Exp $ */
 /* $OpenBSD: digest.c,v 1.30 2018/04/14 07:09:21 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
  * This package is an SSL implementation written
  * by Eric Young (eay@cryptsoft.com).
  * The implementation was written so as to conform with Netscapes SSL.
  *
  * This library is free for commercial and non-commercial use as long as
  * the following conditions are aheared to.  The following conditions
  * apply to all code found in this distribution, be it the RC4, RSA,
  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  * included with this distribution is covered by the same copyright terms
  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  *
  * Copyright remains Eric Young's, and as such any Copyright notices in
  * the code are not to be removed.
  * If this package is used in a product, Eric Young should be given attribution
  * as the author of the parts of the library used.
  * This can be in the form of a textual message at program startup or
  * in documentation (online or textual) provided with the package.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
  *    "This product includes cryptographic software written by
  *     Eric Young (eay@cryptsoft.com)"
  *    The word 'cryptographic' can be left out if the rouines from the library
  *    being used are not cryptographic related :-).
  * 4. If you include any Windows specific code (or a derivative thereof) from
  *    the apps directory (application code) you must include an acknowledgement:
  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  *
  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  * The licence and distribution terms for any publically available version or
  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  * copied and put under another distribution licence
  * [including the GNU Public Licence.]
  */

 /* $OpenBSD: dsa_asn1.c,v 1.22 2018/06/14 17:03:19 jsing Exp $ */
 /* $OpenBSD: ecs_asn1.c,v 1.9 2018/03/17 15:24:44 tb Exp $ */
 /* $OpenBSD: digest.c,v 1.30 2018/04/14 07:09:21 tb Exp $ */
 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  * project 2000.
  */
 /* ====================================================================
  * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
  *
  * 3. All advertising materials mentioning features or use of this
  *    software must display the following acknowledgment:
  *    "This product includes software developed by the OpenSSL Project
  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  *
  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  *    endorse or promote products derived from this software without
  *    prior written permission. For written permission, please contact
  *    licensing@OpenSSL.org.
  *
  * 5. Products derived from this software may not be called "OpenSSL"
  *    nor may "OpenSSL" appear in their names without prior written
  *    permission of the OpenSSL Project.
  *
  * 6. Redistributions of any form whatsoever must retain the following
  *    acknowledgment:
  *    "This product includes software developed by the OpenSSL Project
  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  *
  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  * ====================================================================
  *
  * This product includes cryptographic software written by Eric Young
  * (eay@cryptsoft.com).  This product includes software written by Tim
  * Hudson (tjh@cryptsoft.com).
  *
  */

 /*	$OpenBSD: rsa_meth.c,v 1.2 2018/09/12 06:35:38 djm Exp $	*/
 /*
  * Copyright (c) 2018 Theo Buehler <tb@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

 #include "includes.h"

 #ifdef WITH_OPENSSL

 #include <sys/types.h>

 #include <stdlib.h>
 #include <string.h>

 #include <openssl/err.h>
 #include <openssl/bn.h>
 #include <openssl/dsa.h>
 #include <openssl/rsa.h>
 #include <openssl/evp.h>
 #ifdef OPENSSL_HAS_ECC
 #include <openssl/ecdsa.h>
 #endif
 #include <openssl/dh.h>

 #ifndef HAVE_DSA_GET0_PQG
 void
 DSA_get0_pqg(const DSA *d, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
 {
 	if (p != NULL)
 		*p = d->p;
 	if (q != NULL)
 		*q = d->q;
 	if (g != NULL)
 		*g = d->g;
 }
 #endif /* HAVE_DSA_GET0_PQG */

 #ifndef HAVE_DSA_SET0_PQG
 int
 DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g)
 {
 	if ((d->p == NULL && p == NULL) || (d->q == NULL && q == NULL) ||
 	    (d->g == NULL && g == NULL))
 		return 0;

 	if (p != NULL) {
 		BN_free(d->p);
 		d->p = p;
 	}
 	if (q != NULL) {
 		BN_free(d->q);
 		d->q = q;
 	}
 	if (g != NULL) {
 		BN_free(d->g);
 		d->g = g;
 	}

 	return 1;
 }
 #endif /* HAVE_DSA_SET0_PQG */

 #ifndef HAVE_DSA_GET0_KEY
 void
 DSA_get0_key(const DSA *d, const BIGNUM **pub_key, const BIGNUM **priv_key)
 {
 	if (pub_key != NULL)
 		*pub_key = d->pub_key;
 	if (priv_key != NULL)
 		*priv_key = d->priv_key;
 }
 #endif /* HAVE_DSA_GET0_KEY */

 #ifndef HAVE_DSA_SET0_KEY
 int
 DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key)
 {
 	if (d->pub_key == NULL && pub_key == NULL)
 		return 0;

 	if (pub_key != NULL) {
 		BN_free(d->pub_key);
 		d->pub_key = pub_key;
 	}
 	if (priv_key != NULL) {
 		BN_free(d->priv_key);
 		d->priv_key = priv_key;
 	}

 	return 1;
 }
 #endif /* HAVE_DSA_SET0_KEY */

 #ifndef HAVE_RSA_GET0_KEY
 void
 RSA_get0_key(const RSA *r, const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
 {
 	if (n != NULL)
 		*n = r->n;
 	if (e != NULL)
 		*e = r->e;
 	if (d != NULL)
 		*d = r->d;
 }
 #endif /* HAVE_RSA_GET0_KEY */

 #ifndef HAVE_RSA_SET0_KEY
 int
 RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d)
 {
 	if ((r->n == NULL && n == NULL) || (r->e == NULL && e == NULL))
 		return 0;

 	if (n != NULL) {
 		BN_free(r->n);
 		r->n = n;
 	}
 	if (e != NULL) {
 		BN_free(r->e);
 		r->e = e;
 	}
 	if (d != NULL) {
 		BN_free(r->d);
 		r->d = d;
 	}

 	return 1;
 }
 #endif /* HAVE_RSA_SET0_KEY */

 #ifndef HAVE_RSA_GET0_CRT_PARAMS
 void
 RSA_get0_crt_params(const RSA *r, const BIGNUM **dmp1, const BIGNUM **dmq1,
     const BIGNUM **iqmp)
 {
 	if (dmp1 != NULL)
 		*dmp1 = r->dmp1;
 	if (dmq1 != NULL)
 		*dmq1 = r->dmq1;
 	if (iqmp != NULL)
 		*iqmp = r->iqmp;
 }
 #endif /* HAVE_RSA_GET0_CRT_PARAMS */

 #ifndef HAVE_RSA_SET0_CRT_PARAMS
 int
 RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp)
 {
 	if ((r->dmp1 == NULL && dmp1 == NULL) ||
 	    (r->dmq1 == NULL && dmq1 == NULL) ||
 	    (r->iqmp == NULL && iqmp == NULL))
 	       	return 0;

 	if (dmp1 != NULL) {
 		BN_free(r->dmp1);
 		r->dmp1 = dmp1;
 	}
 	if (dmq1 != NULL) {
 		BN_free(r->dmq1);
 		r->dmq1 = dmq1;
 	}
 	if (iqmp != NULL) {
 		BN_free(r->iqmp);
 		r->iqmp = iqmp;
 	}

 	return 1;
 }
 #endif /* HAVE_RSA_SET0_CRT_PARAMS */

 #ifndef HAVE_RSA_GET0_FACTORS
 void
 RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q)
 {
 	if (p != NULL)
 		*p = r->p;
 	if (q != NULL)
 		*q = r->q;
 }
 #endif /* HAVE_RSA_GET0_FACTORS */

 #ifndef HAVE_RSA_SET0_FACTORS
 int
 RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q)
 {
 	if ((r->p == NULL && p == NULL) || (r->q == NULL && q == NULL))
 		return 0;

 	if (p != NULL) {
 		BN_free(r->p);
 		r->p = p;
 	}
 	if (q != NULL) {
 		BN_free(r->q);
 		r->q = q;
 	}

 	return 1;
 }
 #endif /* HAVE_RSA_SET0_FACTORS */

 #ifndef HAVE_EVP_CIPHER_CTX_GET_IV
 int
 EVP_CIPHER_CTX_get_iv(const EVP_CIPHER_CTX *ctx, unsigned char *iv, size_t len)
 {
 	if (ctx == NULL)
 		return 0;
 	if (EVP_CIPHER_CTX_iv_length(ctx) < 0)
 		return 0;
 	if (len != (size_t)EVP_CIPHER_CTX_iv_length(ctx))
 		return 0;
 	if (len > EVP_MAX_IV_LENGTH)
 		return 0; /* sanity check; shouldn't happen */
 	/*
 	 * Skip the memcpy entirely when the requested IV length is zero,
 	 * since the iv pointer may be NULL or invalid.
 	 */
 	if (len != 0) {
 		if (iv == NULL)
 			return 0;
 # ifdef HAVE_EVP_CIPHER_CTX_IV
 		memcpy(iv, EVP_CIPHER_CTX_iv(ctx), len);
 # else
 		memcpy(iv, ctx->iv, len);
 # endif /* HAVE_EVP_CIPHER_CTX_IV */
 	}
 	return 1;
 }
 #endif /* HAVE_EVP_CIPHER_CTX_GET_IV */

 #ifndef HAVE_EVP_CIPHER_CTX_SET_IV
 int
 EVP_CIPHER_CTX_set_iv(EVP_CIPHER_CTX *ctx, const unsigned char *iv, size_t len)
 {
 	if (ctx == NULL)
 		return 0;
 	if (EVP_CIPHER_CTX_iv_length(ctx) < 0)
 		return 0;
 	if (len != (size_t)EVP_CIPHER_CTX_iv_length(ctx))
 		return 0;
 	if (len > EVP_MAX_IV_LENGTH)
 		return 0; /* sanity check; shouldn't happen */
 	/*
 	 * Skip the memcpy entirely when the requested IV length is zero,
 	 * since the iv pointer may be NULL or invalid.
 	 */
 	if (len != 0) {
 		if (iv == NULL)
 			return 0;
 # ifdef HAVE_EVP_CIPHER_CTX_IV_NOCONST
 		memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, len);
 # else
 		memcpy(ctx->iv, iv, len);
 # endif /* HAVE_EVP_CIPHER_CTX_IV_NOCONST */
 	}
 	return 1;
 }
 #endif /* HAVE_EVP_CIPHER_CTX_SET_IV */

 #ifndef HAVE_DSA_SIG_GET0
 void
 DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
 {
 	if (pr != NULL)
 		*pr = sig->r;
 	if (ps != NULL)
 		*ps = sig->s;
 }
 #endif /* HAVE_DSA_SIG_GET0 */

 #ifndef HAVE_DSA_SIG_SET0
 int
 DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s)
 {
 	if (r == NULL || s == NULL)
 		return 0;

 	BN_clear_free(sig->r);
 	sig->r = r;
 	BN_clear_free(sig->s);
 	sig->s = s;

 	return 1;
 }
 #endif /* HAVE_DSA_SIG_SET0 */

 #ifdef OPENSSL_HAS_ECC
 #ifndef HAVE_ECDSA_SIG_GET0
 void
 ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
 {
 	if (pr != NULL)
 		*pr = sig->r;
 	if (ps != NULL)
 		*ps = sig->s;
 }
 #endif /* HAVE_ECDSA_SIG_GET0 */

 #ifndef HAVE_ECDSA_SIG_SET0
 int
 ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s)
 {
 	if (r == NULL || s == NULL)
 		return 0;

 	BN_clear_free(sig->r);
 	BN_clear_free(sig->s);
 	sig->r = r;
 	sig->s = s;
 	return 1;
 }
 #endif /* HAVE_ECDSA_SIG_SET0 */
 #endif /* OPENSSL_HAS_ECC */

 #ifndef HAVE_DH_GET0_PQG
 void
 DH_get0_pqg(const DH *dh, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
 {
 	if (p != NULL)
 		*p = dh->p;
 	if (q != NULL)
 		*q = dh->q;
 	if (g != NULL)
 		*g = dh->g;
 }
 #endif /* HAVE_DH_GET0_PQG */

 #ifndef HAVE_DH_SET0_PQG
 int
 DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g)
 {
 	if ((dh->p == NULL && p == NULL) || (dh->g == NULL && g == NULL))
 		return 0;

 	if (p != NULL) {
 		BN_free(dh->p);
 		dh->p = p;
 	}
 	if (q != NULL) {
 		BN_free(dh->q);
 		dh->q = q;
 	}
 	if (g != NULL) {
 		BN_free(dh->g);
 		dh->g = g;
 	}

 	return 1;
 }
 #endif /* HAVE_DH_SET0_PQG */

 #ifndef HAVE_DH_GET0_KEY
 void
 DH_get0_key(const DH *dh, const BIGNUM **pub_key, const BIGNUM **priv_key)
 {
 	if (pub_key != NULL)
 		*pub_key = dh->pub_key;
 	if (priv_key != NULL)
 		*priv_key = dh->priv_key;
 }
 #endif /* HAVE_DH_GET0_KEY */

 #ifndef HAVE_DH_SET0_KEY
 int
 DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key)
 {
 	if (pub_key != NULL) {
 		BN_free(dh->pub_key);
 		dh->pub_key = pub_key;
 	}
 	if (priv_key != NULL) {
 		BN_free(dh->priv_key);
 		dh->priv_key = priv_key;
 	}

 	return 1;
 }
 #endif /* HAVE_DH_SET0_KEY */

 #ifndef HAVE_DH_SET_LENGTH
 int
 DH_set_length(DH *dh, long length)
 {
 	if (length < 0 || length > INT_MAX)
 		return 0;

 	dh->length = length;
 	return 1;
 }
 #endif /* HAVE_DH_SET_LENGTH */

 #ifndef HAVE_RSA_METH_FREE
 void
 RSA_meth_free(RSA_METHOD *meth)
 {
 	if (meth != NULL) {
 		free((char *)meth->name);
 		free(meth);
 	}
 }
 #endif /* HAVE_RSA_METH_FREE */

 #ifndef HAVE_RSA_METH_DUP
 RSA_METHOD *
 RSA_meth_dup(const RSA_METHOD *meth)
 {
 	RSA_METHOD *copy;

 	if ((copy = calloc(1, sizeof(*copy))) == NULL)
 		return NULL;
 	memcpy(copy, meth, sizeof(*copy));
 	if ((copy->name = strdup(meth->name)) == NULL) {
 		free(copy);
 		return NULL;
 	}

 	return copy;
 }
 #endif /* HAVE_RSA_METH_DUP */

 #ifndef HAVE_RSA_METH_SET1_NAME
 int
 RSA_meth_set1_name(RSA_METHOD *meth, const char *name)
 {
 	char *copy;

 	if ((copy = strdup(name)) == NULL)
 		return 0;
 	free((char *)meth->name);
 	meth->name = copy;
 	return 1;
 }
 #endif /* HAVE_RSA_METH_SET1_NAME */

 #ifndef HAVE_RSA_METH_GET_FINISH
 int
 (*RSA_meth_get_finish(const RSA_METHOD *meth))(RSA *rsa)
 {
 	return meth->finish;
 }
 #endif /* HAVE_RSA_METH_GET_FINISH */

 #ifndef HAVE_RSA_METH_SET_PRIV_ENC
 int
 RSA_meth_set_priv_enc(RSA_METHOD *meth, int (*priv_enc)(int flen,
     const unsigned char *from, unsigned char *to, RSA *rsa, int padding))
 {
 	meth->rsa_priv_enc = priv_enc;
 	return 1;
 }
 #endif /* HAVE_RSA_METH_SET_PRIV_ENC */

 #ifndef HAVE_RSA_METH_SET_PRIV_DEC
 int
 RSA_meth_set_priv_dec(RSA_METHOD *meth, int (*priv_dec)(int flen,
     const unsigned char *from, unsigned char *to, RSA *rsa, int padding))
 {
 	meth->rsa_priv_dec = priv_dec;
 	return 1;
 }
 #endif /* HAVE_RSA_METH_SET_PRIV_DEC */

 #ifndef HAVE_RSA_METH_SET_FINISH
 int
 RSA_meth_set_finish(RSA_METHOD *meth, int (*finish)(RSA *rsa))
 {
 	meth->finish = finish;
 	return 1;
 }
 #endif /* HAVE_RSA_METH_SET_FINISH */

 #ifndef HAVE_EVP_PKEY_GET0_RSA
 RSA *
 EVP_PKEY_get0_RSA(EVP_PKEY *pkey)
 {
 	if (pkey->type != EVP_PKEY_RSA) {
 		/* EVPerror(EVP_R_EXPECTING_AN_RSA_KEY); */
 		return NULL;
 	}
 	return pkey->pkey.rsa;
 }
 #endif /* HAVE_EVP_PKEY_GET0_RSA */

 #ifndef HAVE_EVP_MD_CTX_NEW
 EVP_MD_CTX *
 EVP_MD_CTX_new(void)
 {
 	return calloc(1, sizeof(EVP_MD_CTX));
 }
 #endif /* HAVE_EVP_MD_CTX_NEW */

 #ifndef HAVE_EVP_MD_CTX_FREE
 void
 EVP_MD_CTX_free(EVP_MD_CTX *ctx)
 {
 	if (ctx == NULL)
 		return;

 	EVP_MD_CTX_cleanup(ctx);

 	free(ctx);
 }
 #endif /* HAVE_EVP_MD_CTX_FREE */

 #endif /* WITH_OPENSSL */
	/* $OpenBSD: dsa_lib.c,v 1.29 2018/04/14 07:09:21 tb Exp $ */
	/* $OpenBSD: rsa_lib.c,v 1.37 2018/04/14 07:09:21 tb Exp $ */
	/* $OpenBSD: evp_lib.c,v 1.17 2018/09/12 06:35:38 djm Exp $ */
	/* $OpenBSD: dh_lib.c,v 1.32 2018/05/02 15:48:38 tb Exp $ */
	/* $OpenBSD: p_lib.c,v 1.24 2018/05/30 15:40:50 tb Exp $ */
	/* $OpenBSD: digest.c,v 1.30 2018/04/14 07:09:21 tb Exp $ */
	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
	* All rights reserved.
	*
	* This package is an SSL implementation written
	* by Eric Young (eay@cryptsoft.com).
	* The implementation was written so as to conform with Netscapes SSL.
	*
	* This library is free for commercial and non-commercial use as long as
	* the following conditions are aheared to. The following conditions
	* apply to all code found in this distribution, be it the RC4, RSA,
	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	* included with this distribution is covered by the same copyright terms
	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	*
	* Copyright remains Eric Young's, and as such any Copyright notices in
	* the code are not to be removed.
	* If this package is used in a product, Eric Young should be given attribution
	* as the author of the parts of the library used.
	* This can be in the form of a textual message at program startup or
	* in documentation (online or textual) provided with the package.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. All advertising materials mentioning features or use of this software
	* must display the following acknowledgement:
	* "This product includes cryptographic software written by
	* Eric Young (eay@cryptsoft.com)"
	* The word 'cryptographic' can be left out if the rouines from the library
	* being used are not cryptographic related :-).
	* 4. If you include any Windows specific code (or a derivative thereof) from
	* the apps directory (application code) you must include an acknowledgement:
	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	*
	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	*
	* The licence and distribution terms for any publically available version or
	* derivative of this code cannot be changed. i.e. this code cannot simply be
	* copied and put under another distribution licence
	* [including the GNU Public Licence.]
	*/

	/* $OpenBSD: dsa_asn1.c,v 1.22 2018/06/14 17:03:19 jsing Exp $ */
	/* $OpenBSD: ecs_asn1.c,v 1.9 2018/03/17 15:24:44 tb Exp $ */
	/* $OpenBSD: digest.c,v 1.30 2018/04/14 07:09:21 tb Exp $ */
	/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
	* project 2000.
	*/
	/* ====================================================================
	* Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	*
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	*
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in
	* the documentation and/or other materials provided with the
	* distribution.
	*
	* 3. All advertising materials mentioning features or use of this
	* software must display the following acknowledgment:
	* "This product includes software developed by the OpenSSL Project
	* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
	*
	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	* endorse or promote products derived from this software without
	* prior written permission. For written permission, please contact
	* licensing@OpenSSL.org.
	*
	* 5. Products derived from this software may not be called "OpenSSL"
	* nor may "OpenSSL" appear in their names without prior written
	* permission of the OpenSSL Project.
	*
	* 6. Redistributions of any form whatsoever must retain the following
	* acknowledgment:
	* "This product includes software developed by the OpenSSL Project
	* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
	*
	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	* OF THE POSSIBILITY OF SUCH DAMAGE.
	* ====================================================================
	*
	* This product includes cryptographic software written by Eric Young
	* (eay@cryptsoft.com). This product includes software written by Tim
	* Hudson (tjh@cryptsoft.com).
	*
	*/

	/* $OpenBSD: rsa_meth.c,v 1.2 2018/09/12 06:35:38 djm Exp $ */
	/*
	* Copyright (c) 2018 Theo Buehler <tb@openbsd.org>
	*
	* Permission to use, copy, modify, and distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.
	*
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*/

	#include "includes.h"

	#ifdef WITH_OPENSSL

	#include <sys/types.h>

	#include <stdlib.h>
	#include <string.h>

	#include <openssl/err.h>
	#include <openssl/bn.h>
	#include <openssl/dsa.h>
	#include <openssl/rsa.h>
	#include <openssl/evp.h>
	#ifdef OPENSSL_HAS_ECC
	#include <openssl/ecdsa.h>
	#endif
	#include <openssl/dh.h>

	#ifndef HAVE_DSA_GET0_PQG
	void
	DSA_get0_pqg(const DSA d, const BIGNUM p, const BIGNUM q, const BIGNUM *g)
	{
	if (p != NULL)
	*p = d->p;
	if (q != NULL)
	*q = d->q;
	if (g != NULL)
	*g = d->g;
	}
	#endif /* HAVE_DSA_GET0_PQG */

	#ifndef HAVE_DSA_SET0_PQG
	int
	DSA_set0_pqg(DSA d, BIGNUM p, BIGNUM q, BIGNUM g)
	{
	if ((d->p == NULL && p == NULL) \|\| (d->q == NULL && q == NULL) \|\|
	(d->g == NULL && g == NULL))
	return 0;

	if (p != NULL) {
	BN_free(d->p);
	d->p = p;
	}
	if (q != NULL) {
	BN_free(d->q);
	d->q = q;
	}
	if (g != NULL) {
	BN_free(d->g);
	d->g = g;
	}

	return 1;
	}
	#endif /* HAVE_DSA_SET0_PQG */

	#ifndef HAVE_DSA_GET0_KEY
	void
	DSA_get0_key(const DSA d, const BIGNUM pub_key, const BIGNUM *priv_key)
	{
	if (pub_key != NULL)
	*pub_key = d->pub_key;
	if (priv_key != NULL)
	*priv_key = d->priv_key;
	}
	#endif /* HAVE_DSA_GET0_KEY */

	#ifndef HAVE_DSA_SET0_KEY
	int
	DSA_set0_key(DSA d, BIGNUM pub_key, BIGNUM *priv_key)
	{
	if (d->pub_key == NULL && pub_key == NULL)
	return 0;

	if (pub_key != NULL) {
	BN_free(d->pub_key);
	d->pub_key = pub_key;
	}
	if (priv_key != NULL) {
	BN_free(d->priv_key);
	d->priv_key = priv_key;
	}

	return 1;
	}
	#endif /* HAVE_DSA_SET0_KEY */

	#ifndef HAVE_RSA_GET0_KEY
	void
	RSA_get0_key(const RSA r, const BIGNUM n, const BIGNUM e, const BIGNUM *d)
	{
	if (n != NULL)
	*n = r->n;
	if (e != NULL)
	*e = r->e;
	if (d != NULL)
	*d = r->d;
	}
	#endif /* HAVE_RSA_GET0_KEY */

	#ifndef HAVE_RSA_SET0_KEY
	int
	RSA_set0_key(RSA r, BIGNUM n, BIGNUM e, BIGNUM d)
	{
	if ((r->n == NULL && n == NULL) \|\| (r->e == NULL && e == NULL))
	return 0;

	if (n != NULL) {
	BN_free(r->n);
	r->n = n;
	}
	if (e != NULL) {
	BN_free(r->e);
	r->e = e;
	}
	if (d != NULL) {
	BN_free(r->d);
	r->d = d;
	}

	return 1;
	}
	#endif /* HAVE_RSA_SET0_KEY */

	#ifndef HAVE_RSA_GET0_CRT_PARAMS
	void
	RSA_get0_crt_params(const RSA r, const BIGNUM dmp1, const BIGNUM *dmq1,
	const BIGNUM **iqmp)
	{
	if (dmp1 != NULL)
	*dmp1 = r->dmp1;
	if (dmq1 != NULL)
	*dmq1 = r->dmq1;
	if (iqmp != NULL)
	*iqmp = r->iqmp;
	}
	#endif /* HAVE_RSA_GET0_CRT_PARAMS */

	#ifndef HAVE_RSA_SET0_CRT_PARAMS
	int
	RSA_set0_crt_params(RSA r, BIGNUM dmp1, BIGNUM dmq1, BIGNUM iqmp)
	{
	if ((r->dmp1 == NULL && dmp1 == NULL) \|\|
	(r->dmq1 == NULL && dmq1 == NULL) \|\|
	(r->iqmp == NULL && iqmp == NULL))
	return 0;

	if (dmp1 != NULL) {
	BN_free(r->dmp1);
	r->dmp1 = dmp1;
	}
	if (dmq1 != NULL) {
	BN_free(r->dmq1);
	r->dmq1 = dmq1;
	}
	if (iqmp != NULL) {
	BN_free(r->iqmp);
	r->iqmp = iqmp;
	}

	return 1;
	}
	#endif /* HAVE_RSA_SET0_CRT_PARAMS */

	#ifndef HAVE_RSA_GET0_FACTORS
	void
	RSA_get0_factors(const RSA r, const BIGNUM p, const BIGNUM *q)
	{
	if (p != NULL)
	*p = r->p;
	if (q != NULL)
	*q = r->q;
	}
	#endif /* HAVE_RSA_GET0_FACTORS */

	#ifndef HAVE_RSA_SET0_FACTORS
	int
	RSA_set0_factors(RSA r, BIGNUM p, BIGNUM *q)
	{
	if ((r->p == NULL && p == NULL) \|\| (r->q == NULL && q == NULL))
	return 0;

	if (p != NULL) {
	BN_free(r->p);
	r->p = p;
	}
	if (q != NULL) {
	BN_free(r->q);
	r->q = q;
	}

	return 1;
	}
	#endif /* HAVE_RSA_SET0_FACTORS */

	#ifndef HAVE_EVP_CIPHER_CTX_GET_IV
	int
	EVP_CIPHER_CTX_get_iv(const EVP_CIPHER_CTX ctx, unsigned char iv, size_t len)
	{
	if (ctx == NULL)
	return 0;
	if (EVP_CIPHER_CTX_iv_length(ctx) < 0)
	return 0;
	if (len != (size_t)EVP_CIPHER_CTX_iv_length(ctx))
	return 0;
	if (len > EVP_MAX_IV_LENGTH)
	return 0; /* sanity check; shouldn't happen */
	/*
	* Skip the memcpy entirely when the requested IV length is zero,
	* since the iv pointer may be NULL or invalid.
	*/
	if (len != 0) {
	if (iv == NULL)
	return 0;
	# ifdef HAVE_EVP_CIPHER_CTX_IV
	memcpy(iv, EVP_CIPHER_CTX_iv(ctx), len);
	# else
	memcpy(iv, ctx->iv, len);
	# endif /* HAVE_EVP_CIPHER_CTX_IV */
	}
	return 1;
	}
	#endif /* HAVE_EVP_CIPHER_CTX_GET_IV */

	#ifndef HAVE_EVP_CIPHER_CTX_SET_IV
	int
	EVP_CIPHER_CTX_set_iv(EVP_CIPHER_CTX ctx, const unsigned char iv, size_t len)
	{
	if (ctx == NULL)
	return 0;
	if (EVP_CIPHER_CTX_iv_length(ctx) < 0)
	return 0;
	if (len != (size_t)EVP_CIPHER_CTX_iv_length(ctx))
	return 0;
	if (len > EVP_MAX_IV_LENGTH)
	return 0; /* sanity check; shouldn't happen */
	/*
	* Skip the memcpy entirely when the requested IV length is zero,
	* since the iv pointer may be NULL or invalid.
	*/
	if (len != 0) {
	if (iv == NULL)
	return 0;
	# ifdef HAVE_EVP_CIPHER_CTX_IV_NOCONST
	memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, len);
	# else
	memcpy(ctx->iv, iv, len);
	# endif /* HAVE_EVP_CIPHER_CTX_IV_NOCONST */
	}
	return 1;
	}
	#endif /* HAVE_EVP_CIPHER_CTX_SET_IV */

	#ifndef HAVE_DSA_SIG_GET0
	void
	DSA_SIG_get0(const DSA_SIG sig, const BIGNUM pr, const BIGNUM *ps)
	{
	if (pr != NULL)
	*pr = sig->r;
	if (ps != NULL)
	*ps = sig->s;
	}
	#endif /* HAVE_DSA_SIG_GET0 */

	#ifndef HAVE_DSA_SIG_SET0
	int
	DSA_SIG_set0(DSA_SIG sig, BIGNUM r, BIGNUM *s)
	{
	if (r == NULL \|\| s == NULL)
	return 0;

	BN_clear_free(sig->r);
	sig->r = r;
	BN_clear_free(sig->s);
	sig->s = s;

	return 1;
	}
	#endif /* HAVE_DSA_SIG_SET0 */

	#ifdef OPENSSL_HAS_ECC
	#ifndef HAVE_ECDSA_SIG_GET0
	void
	ECDSA_SIG_get0(const ECDSA_SIG sig, const BIGNUM pr, const BIGNUM *ps)
	{
	if (pr != NULL)
	*pr = sig->r;
	if (ps != NULL)
	*ps = sig->s;
	}
	#endif /* HAVE_ECDSA_SIG_GET0 */

	#ifndef HAVE_ECDSA_SIG_SET0
	int
	ECDSA_SIG_set0(ECDSA_SIG sig, BIGNUM r, BIGNUM *s)
	{
	if (r == NULL \|\| s == NULL)
	return 0;

	BN_clear_free(sig->r);
	BN_clear_free(sig->s);
	sig->r = r;
	sig->s = s;
	return 1;
	}
	#endif /* HAVE_ECDSA_SIG_SET0 */
	#endif /* OPENSSL_HAS_ECC */

	#ifndef HAVE_DH_GET0_PQG
	void
	DH_get0_pqg(const DH dh, const BIGNUM p, const BIGNUM q, const BIGNUM *g)
	{
	if (p != NULL)
	*p = dh->p;
	if (q != NULL)
	*q = dh->q;
	if (g != NULL)
	*g = dh->g;
	}
	#endif /* HAVE_DH_GET0_PQG */

	#ifndef HAVE_DH_SET0_PQG
	int
	DH_set0_pqg(DH dh, BIGNUM p, BIGNUM q, BIGNUM g)
	{
	if ((dh->p == NULL && p == NULL) \|\| (dh->g == NULL && g == NULL))
	return 0;

	if (p != NULL) {
	BN_free(dh->p);
	dh->p = p;
	}
	if (q != NULL) {
	BN_free(dh->q);
	dh->q = q;
	}
	if (g != NULL) {
	BN_free(dh->g);
	dh->g = g;
	}

	return 1;
	}
	#endif /* HAVE_DH_SET0_PQG */

	#ifndef HAVE_DH_GET0_KEY
	void
	DH_get0_key(const DH dh, const BIGNUM pub_key, const BIGNUM *priv_key)
	{
	if (pub_key != NULL)
	*pub_key = dh->pub_key;
	if (priv_key != NULL)
	*priv_key = dh->priv_key;
	}
	#endif /* HAVE_DH_GET0_KEY */

	#ifndef HAVE_DH_SET0_KEY
	int
	DH_set0_key(DH dh, BIGNUM pub_key, BIGNUM *priv_key)
	{
	if (pub_key != NULL) {
	BN_free(dh->pub_key);
	dh->pub_key = pub_key;
	}
	if (priv_key != NULL) {
	BN_free(dh->priv_key);
	dh->priv_key = priv_key;
	}

	return 1;
	}
	#endif /* HAVE_DH_SET0_KEY */

	#ifndef HAVE_DH_SET_LENGTH
	int
	DH_set_length(DH *dh, long length)
	{
	if (length < 0 \|\| length > INT_MAX)
	return 0;

	dh->length = length;
	return 1;
	}
	#endif /* HAVE_DH_SET_LENGTH */

	#ifndef HAVE_RSA_METH_FREE
	void
	RSA_meth_free(RSA_METHOD *meth)
	{
	if (meth != NULL) {
	free((char *)meth->name);
	free(meth);
	}
	}
	#endif /* HAVE_RSA_METH_FREE */

	#ifndef HAVE_RSA_METH_DUP
	RSA_METHOD *
	RSA_meth_dup(const RSA_METHOD *meth)
	{
	RSA_METHOD *copy;

	if ((copy = calloc(1, sizeof(*copy))) == NULL)
	return NULL;
	memcpy(copy, meth, sizeof(*copy));
	if ((copy->name = strdup(meth->name)) == NULL) {
	free(copy);
	return NULL;
	}

	return copy;
	}
	#endif /* HAVE_RSA_METH_DUP */

	#ifndef HAVE_RSA_METH_SET1_NAME
	int
	RSA_meth_set1_name(RSA_METHOD meth, const char name)
	{
	char *copy;

	if ((copy = strdup(name)) == NULL)
	return 0;
	free((char *)meth->name);
	meth->name = copy;
	return 1;
	}
	#endif /* HAVE_RSA_METH_SET1_NAME */

	#ifndef HAVE_RSA_METH_GET_FINISH
	int
	(RSA_meth_get_finish(const RSA_METHOD meth))(RSA *rsa)
	{
	return meth->finish;
	}
	#endif /* HAVE_RSA_METH_GET_FINISH */

	#ifndef HAVE_RSA_METH_SET_PRIV_ENC
	int
	RSA_meth_set_priv_enc(RSA_METHOD meth, int (priv_enc)(int flen,
	const unsigned char from, unsigned char to, RSA *rsa, int padding))
	{
	meth->rsa_priv_enc = priv_enc;
	return 1;
	}
	#endif /* HAVE_RSA_METH_SET_PRIV_ENC */

	#ifndef HAVE_RSA_METH_SET_PRIV_DEC
	int
	RSA_meth_set_priv_dec(RSA_METHOD meth, int (priv_dec)(int flen,
	const unsigned char from, unsigned char to, RSA *rsa, int padding))
	{
	meth->rsa_priv_dec = priv_dec;
	return 1;
	}
	#endif /* HAVE_RSA_METH_SET_PRIV_DEC */

	#ifndef HAVE_RSA_METH_SET_FINISH
	int
	RSA_meth_set_finish(RSA_METHOD meth, int (finish)(RSA *rsa))
	{
	meth->finish = finish;
	return 1;
	}
	#endif /* HAVE_RSA_METH_SET_FINISH */

	#ifndef HAVE_EVP_PKEY_GET0_RSA
	RSA *
	EVP_PKEY_get0_RSA(EVP_PKEY *pkey)
	{
	if (pkey->type != EVP_PKEY_RSA) {
	/* EVPerror(EVP_R_EXPECTING_AN_RSA_KEY); */
	return NULL;
	}
	return pkey->pkey.rsa;
	}
	#endif /* HAVE_EVP_PKEY_GET0_RSA */

	#ifndef HAVE_EVP_MD_CTX_NEW
	EVP_MD_CTX *
	EVP_MD_CTX_new(void)
	{
	return calloc(1, sizeof(EVP_MD_CTX));
	}
	#endif /* HAVE_EVP_MD_CTX_NEW */

	#ifndef HAVE_EVP_MD_CTX_FREE
	void
	EVP_MD_CTX_free(EVP_MD_CTX *ctx)
	{
	if (ctx == NULL)
	return;

	EVP_MD_CTX_cleanup(ctx);

	free(ctx);
	}
	#endif /* HAVE_EVP_MD_CTX_FREE */

	#endif /* WITH_OPENSSL */