Update documentation regarding required output buffer memory size
[openssl.git] / ssl / ssl_rsa.c
index 34a4d27..897c8f2 100644 (file)
-/* ssl/ssl_rsa.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2018 The OpenSSL Project Authors. 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.]
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
  */
 
 #include <stdio.h>
+#include "ssl_locl.h"
+#include "packet_locl.h"
 #include <openssl/bio.h>
 #include <openssl/objects.h>
 #include <openssl/evp.h>
 #include <openssl/x509.h>
 #include <openssl/pem.h>
-#include "ssl_locl.h"
 
 static int ssl_set_cert(CERT *c, X509 *x509);
 static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey);
-int SSL_use_certificate(SSL *ssl, X509 *x)
-       {
-       if (x == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_CERTIFICATE,ERR_R_PASSED_NULL_PARAMETER);
-               return(0);
-               }
-       if (!ssl_cert_inst(&ssl->cert))
-               {
-               SSLerr(SSL_F_SSL_USE_CERTIFICATE,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-       return(ssl_set_cert(ssl->cert,x));
-       }
-
-#ifndef NO_STDIO
-int SSL_use_certificate_file(SSL *ssl, const char *file, int type)
-       {
-       int j;
-       BIO *in;
-       int ret=0;
-       X509 *x=NULL;
-
-       in=BIO_new(BIO_s_file_internal());
-       if (in == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,ERR_R_BUF_LIB);
-               goto end;
-               }
-
-       if (BIO_read_filename(in,file) <= 0)
-               {
-               SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,ERR_R_SYS_LIB);
-               goto end;
-               }
-       if (type == SSL_FILETYPE_ASN1)
-               {
-               j=ERR_R_ASN1_LIB;
-               x=d2i_X509_bio(in,NULL);
-               }
-       else if (type == SSL_FILETYPE_PEM)
-               {
-               j=ERR_R_PEM_LIB;
-               x=PEM_read_bio_X509(in,NULL,ssl->ctx->default_passwd_callback,ssl->ctx->default_passwd_callback_userdata);
-               }
-       else
-               {
-               SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,SSL_R_BAD_SSL_FILETYPE);
-               goto end;
-               }
-
-       if (x == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,j);
-               goto end;
-               }
-
-       ret=SSL_use_certificate(ssl,x);
-end:
-       if (x != NULL) X509_free(x);
-       if (in != NULL) BIO_free(in);
-       return(ret);
-       }
-#endif
-
-int SSL_use_certificate_ASN1(SSL *ssl, unsigned char *d, int len)
-       {
-       X509 *x;
-       int ret;
 
-       x=d2i_X509(NULL,&d,(long)len);
-       if (x == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_CERTIFICATE_ASN1,ERR_R_ASN1_LIB);
-               return(0);
-               }
+#define  SYNTHV1CONTEXT     (SSL_EXT_TLS1_2_AND_BELOW_ONLY \
+                             | SSL_EXT_CLIENT_HELLO \
+                             | SSL_EXT_TLS1_2_SERVER_HELLO \
+                             | SSL_EXT_IGNORE_ON_RESUMPTION)
 
-       ret=SSL_use_certificate(ssl,x);
-       X509_free(x);
-       return(ret);
-       }
+int SSL_use_certificate(SSL *ssl, X509 *x)
+{
+    int rv;
+    if (x == NULL) {
+        SSLerr(SSL_F_SSL_USE_CERTIFICATE, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+    rv = ssl_security_cert(ssl, NULL, x, 0, 1);
+    if (rv != 1) {
+        SSLerr(SSL_F_SSL_USE_CERTIFICATE, rv);
+        return 0;
+    }
+
+    return ssl_set_cert(ssl->cert, x);
+}
 
-#ifndef NO_RSA
+int SSL_use_certificate_file(SSL *ssl, const char *file, int type)
+{
+    int j;
+    BIO *in;
+    int ret = 0;
+    X509 *x = NULL;
+
+    in = BIO_new(BIO_s_file());
+    if (in == NULL) {
+        SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, ERR_R_BUF_LIB);
+        goto end;
+    }
+
+    if (BIO_read_filename(in, file) <= 0) {
+        SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, ERR_R_SYS_LIB);
+        goto end;
+    }
+    if (type == SSL_FILETYPE_ASN1) {
+        j = ERR_R_ASN1_LIB;
+        x = d2i_X509_bio(in, NULL);
+    } else if (type == SSL_FILETYPE_PEM) {
+        j = ERR_R_PEM_LIB;
+        x = PEM_read_bio_X509(in, NULL, ssl->default_passwd_callback,
+                              ssl->default_passwd_callback_userdata);
+    } else {
+        SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, SSL_R_BAD_SSL_FILETYPE);
+        goto end;
+    }
+
+    if (x == NULL) {
+        SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE, j);
+        goto end;
+    }
+
+    ret = SSL_use_certificate(ssl, x);
+ end:
+    X509_free(x);
+    BIO_free(in);
+    return ret;
+}
+
+int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len)
+{
+    X509 *x;
+    int ret;
+
+    x = d2i_X509(NULL, &d, (long)len);
+    if (x == NULL) {
+        SSLerr(SSL_F_SSL_USE_CERTIFICATE_ASN1, ERR_R_ASN1_LIB);
+        return 0;
+    }
+
+    ret = SSL_use_certificate(ssl, x);
+    X509_free(x);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_RSA
 int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa)
-       {
-       EVP_PKEY *pkey;
-       int ret;
-
-       if (rsa == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);
-               return(0);
-               }
-       if (!ssl_cert_inst(&ssl->cert))
-               {
-               SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-       if ((pkey=EVP_PKEY_new()) == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY,ERR_R_EVP_LIB);
-               return(0);
-               }
-
-       CRYPTO_add(&rsa->references,1,CRYPTO_LOCK_RSA);
-       EVP_PKEY_assign_RSA(pkey,rsa);
-
-       ret=ssl_set_pkey(ssl->cert,pkey);
-       EVP_PKEY_free(pkey);
-       return(ret);
-       }
+{
+    EVP_PKEY *pkey;
+    int ret;
+
+    if (rsa == NULL) {
+        SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+    if ((pkey = EVP_PKEY_new()) == NULL) {
+        SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY, ERR_R_EVP_LIB);
+        return 0;
+    }
+
+    RSA_up_ref(rsa);
+    if (EVP_PKEY_assign_RSA(pkey, rsa) <= 0) {
+        RSA_free(rsa);
+        EVP_PKEY_free(pkey);
+        return 0;
+    }
+
+    ret = ssl_set_pkey(ssl->cert, pkey);
+    EVP_PKEY_free(pkey);
+    return ret;
+}
 #endif
 
 static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey)
-       {
-       int i,ok=0,bad=0;
-
-       i=ssl_cert_type(NULL,pkey);
-       if (i < 0)
-               {
-               SSLerr(SSL_F_SSL_SET_PKEY,SSL_R_UNKNOWN_CERTIFICATE_TYPE);
-               return(0);
-               }
-
-       if (c->pkeys[i].x509 != NULL)
-               {
-               EVP_PKEY *pktmp;
-               pktmp = X509_get_pubkey(c->pkeys[i].x509);
-               EVP_PKEY_copy_parameters(pktmp,pkey);
-               EVP_PKEY_free(pktmp);
-               ERR_clear_error();
-
-#ifndef NO_RSA
-               /* Don't check the public/private key, this is mostly
-                * for smart cards. */
-               if ((pkey->type == EVP_PKEY_RSA) &&
-                       (RSA_flags(pkey->pkey.rsa) &
-                        RSA_METHOD_FLAG_NO_CHECK))
-                        ok=1;
-               else
+{
+    size_t i;
+
+    if (ssl_cert_lookup_by_pkey(pkey, &i) == NULL) {
+        SSLerr(SSL_F_SSL_SET_PKEY, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
+        return 0;
+    }
+
+    if (c->pkeys[i].x509 != NULL) {
+        EVP_PKEY *pktmp;
+        pktmp = X509_get0_pubkey(c->pkeys[i].x509);
+        if (pktmp == NULL) {
+            SSLerr(SSL_F_SSL_SET_PKEY, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        /*
+         * The return code from EVP_PKEY_copy_parameters is deliberately
+         * ignored. Some EVP_PKEY types cannot do this.
+         */
+        EVP_PKEY_copy_parameters(pktmp, pkey);
+        ERR_clear_error();
+
+#ifndef OPENSSL_NO_RSA
+        /*
+         * Don't check the public/private key, this is mostly for smart
+         * cards.
+         */
+        if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA
+            && RSA_flags(EVP_PKEY_get0_RSA(pkey)) & RSA_METHOD_FLAG_NO_CHECK) ;
+        else
 #endif
-                       if (!X509_check_private_key(c->pkeys[i].x509,pkey))
-                       {
-                       if ((i == SSL_PKEY_DH_RSA) || (i == SSL_PKEY_DH_DSA))
-                               {
-                               i=(i == SSL_PKEY_DH_RSA)?
-                                       SSL_PKEY_DH_DSA:SSL_PKEY_DH_RSA;
-
-                               if (c->pkeys[i].x509 == NULL)
-                                       ok=1;
-                               else
-                                       {
-                                       if (!X509_check_private_key(
-                                               c->pkeys[i].x509,pkey))
-                                               bad=1;
-                                       else
-                                               ok=1;
-                                       }
-                               }
-                       else
-                               bad=1;
-                       }
-               else
-                       ok=1;
-               }
-       else
-               ok=1;
-
-       if (bad)
-               {
-               X509_free(c->pkeys[i].x509);
-               c->pkeys[i].x509=NULL;
-               return(0);
-               }
-
-       if (c->pkeys[i].privatekey != NULL)
-               EVP_PKEY_free(c->pkeys[i].privatekey);
-       CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
-       c->pkeys[i].privatekey=pkey;
-       c->key= &(c->pkeys[i]);
-
-       c->valid=0;
-       return(1);
-       }
-
-#ifndef NO_RSA
-#ifndef NO_STDIO
+        if (!X509_check_private_key(c->pkeys[i].x509, pkey)) {
+            X509_free(c->pkeys[i].x509);
+            c->pkeys[i].x509 = NULL;
+            return 0;
+        }
+    }
+
+    EVP_PKEY_free(c->pkeys[i].privatekey);
+    EVP_PKEY_up_ref(pkey);
+    c->pkeys[i].privatekey = pkey;
+    c->key = &c->pkeys[i];
+    return 1;
+}
+
+#ifndef OPENSSL_NO_RSA
 int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type)
-       {
-       int j,ret=0;
-       BIO *in;
-       RSA *rsa=NULL;
-
-       in=BIO_new(BIO_s_file_internal());
-       if (in == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,ERR_R_BUF_LIB);
-               goto end;
-               }
-
-       if (BIO_read_filename(in,file) <= 0)
-               {
-               SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,ERR_R_SYS_LIB);
-               goto end;
-               }
-       if      (type == SSL_FILETYPE_ASN1)
-               {
-               j=ERR_R_ASN1_LIB;
-               rsa=d2i_RSAPrivateKey_bio(in,NULL);
-               }
-       else if (type == SSL_FILETYPE_PEM)
-               {
-               j=ERR_R_PEM_LIB;
-               rsa=PEM_read_bio_RSAPrivateKey(in,NULL,
-                       ssl->ctx->default_passwd_callback,ssl->ctx->default_passwd_callback_userdata);
-               }
-       else
-               {
-               SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);
-               goto end;
-               }
-       if (rsa == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,j);
-               goto end;
-               }
-       ret=SSL_use_RSAPrivateKey(ssl,rsa);
-       RSA_free(rsa);
-end:
-       if (in != NULL) BIO_free(in);
-       return(ret);
-       }
-#endif
-
-int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, unsigned char *d, long len)
-       {
-       int ret;
-       const unsigned char *p;
-       RSA *rsa;
-
-       p=d;
-       if ((rsa=d2i_RSAPrivateKey(NULL,&p,(long)len)) == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1,ERR_R_ASN1_LIB);
-               return(0);
-               }
-
-       ret=SSL_use_RSAPrivateKey(ssl,rsa);
-       RSA_free(rsa);
-       return(ret);
-       }
-#endif /* !NO_RSA */
+{
+    int j, ret = 0;
+    BIO *in;
+    RSA *rsa = NULL;
+
+    in = BIO_new(BIO_s_file());
+    if (in == NULL) {
+        SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, ERR_R_BUF_LIB);
+        goto end;
+    }
+
+    if (BIO_read_filename(in, file) <= 0) {
+        SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, ERR_R_SYS_LIB);
+        goto end;
+    }
+    if (type == SSL_FILETYPE_ASN1) {
+        j = ERR_R_ASN1_LIB;
+        rsa = d2i_RSAPrivateKey_bio(in, NULL);
+    } else if (type == SSL_FILETYPE_PEM) {
+        j = ERR_R_PEM_LIB;
+        rsa = PEM_read_bio_RSAPrivateKey(in, NULL,
+                                         ssl->default_passwd_callback,
+                                         ssl->default_passwd_callback_userdata);
+    } else {
+        SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE);
+        goto end;
+    }
+    if (rsa == NULL) {
+        SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE, j);
+        goto end;
+    }
+    ret = SSL_use_RSAPrivateKey(ssl, rsa);
+    RSA_free(rsa);
+ end:
+    BIO_free(in);
+    return ret;
+}
+
+int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const unsigned char *d, long len)
+{
+    int ret;
+    const unsigned char *p;
+    RSA *rsa;
+
+    p = d;
+    if ((rsa = d2i_RSAPrivateKey(NULL, &p, (long)len)) == NULL) {
+        SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1, ERR_R_ASN1_LIB);
+        return 0;
+    }
+
+    ret = SSL_use_RSAPrivateKey(ssl, rsa);
+    RSA_free(rsa);
+    return ret;
+}
+#endif                          /* !OPENSSL_NO_RSA */
 
 int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey)
-       {
-       int ret;
-
-       if (pkey == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_PRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);
-               return(0);
-               }
-       if (!ssl_cert_inst(&ssl->cert))
-               {
-               SSLerr(SSL_F_SSL_USE_PRIVATEKEY,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-       ret=ssl_set_pkey(ssl->cert,pkey);
-       return(ret);
-       }
-
-#ifndef NO_STDIO
-int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type)
-       {
-       int j,ret=0;
-       BIO *in;
-       EVP_PKEY *pkey=NULL;
-
-       in=BIO_new(BIO_s_file_internal());
-       if (in == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,ERR_R_BUF_LIB);
-               goto end;
-               }
-
-       if (BIO_read_filename(in,file) <= 0)
-               {
-               SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,ERR_R_SYS_LIB);
-               goto end;
-               }
-       if (type == SSL_FILETYPE_PEM)
-               {
-               j=ERR_R_PEM_LIB;
-               pkey=PEM_read_bio_PrivateKey(in,NULL,
-                       ssl->ctx->default_passwd_callback,ssl->ctx->default_passwd_callback_userdata);
-               }
-       else
-               {
-               SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);
-               goto end;
-               }
-       if (pkey == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,j);
-               goto end;
-               }
-       ret=SSL_use_PrivateKey(ssl,pkey);
-       EVP_PKEY_free(pkey);
-end:
-       if (in != NULL) BIO_free(in);
-       return(ret);
-       }
-#endif
-
-int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, unsigned char *d, long len)
-       {
-       int ret;
-       unsigned char *p;
-       EVP_PKEY *pkey;
+{
+    int ret;
 
-       p=d;
-       if ((pkey=d2i_PrivateKey(type,NULL,&p,(long)len)) == NULL)
-               {
-               SSLerr(SSL_F_SSL_USE_PRIVATEKEY_ASN1,ERR_R_ASN1_LIB);
-               return(0);
-               }
+    if (pkey == NULL) {
+        SSLerr(SSL_F_SSL_USE_PRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+    ret = ssl_set_pkey(ssl->cert, pkey);
+    return ret;
+}
 
-       ret=SSL_use_PrivateKey(ssl,pkey);
-       EVP_PKEY_free(pkey);
-       return(ret);
-       }
+int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type)
+{
+    int j, ret = 0;
+    BIO *in;
+    EVP_PKEY *pkey = NULL;
+
+    in = BIO_new(BIO_s_file());
+    if (in == NULL) {
+        SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, ERR_R_BUF_LIB);
+        goto end;
+    }
+
+    if (BIO_read_filename(in, file) <= 0) {
+        SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, ERR_R_SYS_LIB);
+        goto end;
+    }
+    if (type == SSL_FILETYPE_PEM) {
+        j = ERR_R_PEM_LIB;
+        pkey = PEM_read_bio_PrivateKey(in, NULL,
+                                       ssl->default_passwd_callback,
+                                       ssl->default_passwd_callback_userdata);
+    } else if (type == SSL_FILETYPE_ASN1) {
+        j = ERR_R_ASN1_LIB;
+        pkey = d2i_PrivateKey_bio(in, NULL);
+    } else {
+        SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE);
+        goto end;
+    }
+    if (pkey == NULL) {
+        SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE, j);
+        goto end;
+    }
+    ret = SSL_use_PrivateKey(ssl, pkey);
+    EVP_PKEY_free(pkey);
+ end:
+    BIO_free(in);
+    return ret;
+}
+
+int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const unsigned char *d,
+                            long len)
+{
+    int ret;
+    const unsigned char *p;
+    EVP_PKEY *pkey;
+
+    p = d;
+    if ((pkey = d2i_PrivateKey(type, NULL, &p, (long)len)) == NULL) {
+        SSLerr(SSL_F_SSL_USE_PRIVATEKEY_ASN1, ERR_R_ASN1_LIB);
+        return 0;
+    }
+
+    ret = SSL_use_PrivateKey(ssl, pkey);
+    EVP_PKEY_free(pkey);
+    return ret;
+}
 
 int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x)
-       {
-       if (x == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE,ERR_R_PASSED_NULL_PARAMETER);
-               return(0);
-               }
-       if (!ssl_cert_inst(&ctx->cert))
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-       return(ssl_set_cert(ctx->cert, x));
-       }
+{
+    int rv;
+    if (x == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+    rv = ssl_security_cert(NULL, ctx, x, 0, 1);
+    if (rv != 1) {
+        SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE, rv);
+        return 0;
+    }
+    return ssl_set_cert(ctx->cert, x);
+}
 
 static int ssl_set_cert(CERT *c, X509 *x)
-       {
-       EVP_PKEY *pkey;
-       int i,ok=0,bad=0;
-
-       pkey=X509_get_pubkey(x);
-       if (pkey == NULL)
-               {
-               SSLerr(SSL_F_SSL_SET_CERT,SSL_R_X509_LIB);
-               return(0);
-               }
-
-       i=ssl_cert_type(x,pkey);
-       if (i < 0)
-               {
-               SSLerr(SSL_F_SSL_SET_CERT,SSL_R_UNKNOWN_CERTIFICATE_TYPE);
-               EVP_PKEY_free(pkey);
-               return(0);
-               }
-
-       if (c->pkeys[i].privatekey != NULL)
-               {
-               EVP_PKEY_copy_parameters(pkey,c->pkeys[i].privatekey);
-               ERR_clear_error();
-
-#ifndef NO_RSA
-               /* Don't check the public/private key, this is mostly
-                * for smart cards. */
-               if ((c->pkeys[i].privatekey->type == EVP_PKEY_RSA) &&
-                       (RSA_flags(c->pkeys[i].privatekey->pkey.rsa) &
-                        RSA_METHOD_FLAG_NO_CHECK))
-                        ok=1;
-               else
+{
+    EVP_PKEY *pkey;
+    size_t i;
+
+    pkey = X509_get0_pubkey(x);
+    if (pkey == NULL) {
+        SSLerr(SSL_F_SSL_SET_CERT, SSL_R_X509_LIB);
+        return 0;
+    }
+
+    if (ssl_cert_lookup_by_pkey(pkey, &i) == NULL) {
+        SSLerr(SSL_F_SSL_SET_CERT, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
+        return 0;
+    }
+#ifndef OPENSSL_NO_EC
+    if (i == SSL_PKEY_ECC && !EC_KEY_can_sign(EVP_PKEY_get0_EC_KEY(pkey))) {
+        SSLerr(SSL_F_SSL_SET_CERT, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
+        return 0;
+    }
 #endif
-               {
-               if (!X509_check_private_key(x,c->pkeys[i].privatekey))
-                       {
-                       if ((i == SSL_PKEY_DH_RSA) || (i == SSL_PKEY_DH_DSA))
-                               {
-                               i=(i == SSL_PKEY_DH_RSA)?
-                                       SSL_PKEY_DH_DSA:SSL_PKEY_DH_RSA;
-
-                               if (c->pkeys[i].privatekey == NULL)
-                                       ok=1;
-                               else
-                                       {
-                                       if (!X509_check_private_key(x,
-                                               c->pkeys[i].privatekey))
-                                               bad=1;
-                                       else
-                                               ok=1;
-                                       }
-                               }
-                       else
-                               bad=1;
-                       }
-               else
-                       ok=1;
-               } /* NO_RSA */
-               }
-       else
-               ok=1;
-
-       EVP_PKEY_free(pkey);
-       if (bad)
-               {
-               EVP_PKEY_free(c->pkeys[i].privatekey);
-               c->pkeys[i].privatekey=NULL;
-               }
-
-       if (c->pkeys[i].x509 != NULL)
-               X509_free(c->pkeys[i].x509);
-       CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
-       c->pkeys[i].x509=x;
-       c->key= &(c->pkeys[i]);
-
-       c->valid=0;
-       return(1);
-       }
-
-#ifndef NO_STDIO
-int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type)
-       {
-       int j;
-       BIO *in;
-       int ret=0;
-       X509 *x=NULL;
-
-       in=BIO_new(BIO_s_file_internal());
-       if (in == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,ERR_R_BUF_LIB);
-               goto end;
-               }
-
-       if (BIO_read_filename(in,file) <= 0)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,ERR_R_SYS_LIB);
-               goto end;
-               }
-       if (type == SSL_FILETYPE_ASN1)
-               {
-               j=ERR_R_ASN1_LIB;
-               x=d2i_X509_bio(in,NULL);
-               }
-       else if (type == SSL_FILETYPE_PEM)
-               {
-               j=ERR_R_PEM_LIB;
-               x=PEM_read_bio_X509(in,NULL,ctx->default_passwd_callback,ctx->default_passwd_callback_userdata);
-               }
-       else
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,SSL_R_BAD_SSL_FILETYPE);
-               goto end;
-               }
-
-       if (x == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,j);
-               goto end;
-               }
-
-       ret=SSL_CTX_use_certificate(ctx,x);
-end:
-       if (x != NULL) X509_free(x);
-       if (in != NULL) BIO_free(in);
-       return(ret);
-       }
-#endif
-
-int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, unsigned char *d)
-       {
-       X509 *x;
-       int ret;
-
-       x=d2i_X509(NULL,&d,(long)len);
-       if (x == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_ASN1,ERR_R_ASN1_LIB);
-               return(0);
-               }
+    if (c->pkeys[i].privatekey != NULL) {
+        /*
+         * The return code from EVP_PKEY_copy_parameters is deliberately
+         * ignored. Some EVP_PKEY types cannot do this.
+         */
+        EVP_PKEY_copy_parameters(pkey, c->pkeys[i].privatekey);
+        ERR_clear_error();
+
+#ifndef OPENSSL_NO_RSA
+        /*
+         * Don't check the public/private key, this is mostly for smart
+         * cards.
+         */
+        if (EVP_PKEY_id(c->pkeys[i].privatekey) == EVP_PKEY_RSA
+            && RSA_flags(EVP_PKEY_get0_RSA(c->pkeys[i].privatekey)) &
+            RSA_METHOD_FLAG_NO_CHECK) ;
+        else
+#endif                          /* OPENSSL_NO_RSA */
+        if (!X509_check_private_key(x, c->pkeys[i].privatekey)) {
+            /*
+             * don't fail for a cert/key mismatch, just free current private
+             * key (when switching to a different cert & key, first this
+             * function should be used, then ssl_set_pkey
+             */
+            EVP_PKEY_free(c->pkeys[i].privatekey);
+            c->pkeys[i].privatekey = NULL;
+            /* clear error queue */
+            ERR_clear_error();
+        }
+    }
+
+    X509_free(c->pkeys[i].x509);
+    X509_up_ref(x);
+    c->pkeys[i].x509 = x;
+    c->key = &(c->pkeys[i]);
+
+    return 1;
+}
 
-       ret=SSL_CTX_use_certificate(ctx,x);
-       X509_free(x);
-       return(ret);
-       }
-
-#ifndef NO_RSA
+int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type)
+{
+    int j;
+    BIO *in;
+    int ret = 0;
+    X509 *x = NULL;
+
+    in = BIO_new(BIO_s_file());
+    if (in == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, ERR_R_BUF_LIB);
+        goto end;
+    }
+
+    if (BIO_read_filename(in, file) <= 0) {
+        SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, ERR_R_SYS_LIB);
+        goto end;
+    }
+    if (type == SSL_FILETYPE_ASN1) {
+        j = ERR_R_ASN1_LIB;
+        x = d2i_X509_bio(in, NULL);
+    } else if (type == SSL_FILETYPE_PEM) {
+        j = ERR_R_PEM_LIB;
+        x = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback,
+                              ctx->default_passwd_callback_userdata);
+    } else {
+        SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, SSL_R_BAD_SSL_FILETYPE);
+        goto end;
+    }
+
+    if (x == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, j);
+        goto end;
+    }
+
+    ret = SSL_CTX_use_certificate(ctx, x);
+ end:
+    X509_free(x);
+    BIO_free(in);
+    return ret;
+}
+
+int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, const unsigned char *d)
+{
+    X509 *x;
+    int ret;
+
+    x = d2i_X509(NULL, &d, (long)len);
+    if (x == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_ASN1, ERR_R_ASN1_LIB);
+        return 0;
+    }
+
+    ret = SSL_CTX_use_certificate(ctx, x);
+    X509_free(x);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_RSA
 int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa)
-       {
-       int ret;
-       EVP_PKEY *pkey;
-
-       if (rsa == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);
-               return(0);
-               }
-       if (!ssl_cert_inst(&ctx->cert))
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-       if ((pkey=EVP_PKEY_new()) == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY,ERR_R_EVP_LIB);
-               return(0);
-               }
-
-       CRYPTO_add(&rsa->references,1,CRYPTO_LOCK_RSA);
-       EVP_PKEY_assign_RSA(pkey,rsa);
-
-       ret=ssl_set_pkey(ctx->cert, pkey);
-       EVP_PKEY_free(pkey);
-       return(ret);
-       }
-
-#ifndef NO_STDIO
-int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type)
-       {
-       int j,ret=0;
-       BIO *in;
-       RSA *rsa=NULL;
-
-       in=BIO_new(BIO_s_file_internal());
-       if (in == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE,ERR_R_BUF_LIB);
-               goto end;
-               }
-
-       if (BIO_read_filename(in,file) <= 0)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE,ERR_R_SYS_LIB);
-               goto end;
-               }
-       if      (type == SSL_FILETYPE_ASN1)
-               {
-               j=ERR_R_ASN1_LIB;
-               rsa=d2i_RSAPrivateKey_bio(in,NULL);
-               }
-       else if (type == SSL_FILETYPE_PEM)
-               {
-               j=ERR_R_PEM_LIB;
-               rsa=PEM_read_bio_RSAPrivateKey(in,NULL,
-                       ctx->default_passwd_callback,ctx->default_passwd_callback_userdata);
-               }
-       else
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);
-               goto end;
-               }
-       if (rsa == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE,j);
-               goto end;
-               }
-       ret=SSL_CTX_use_RSAPrivateKey(ctx,rsa);
-       RSA_free(rsa);
-end:
-       if (in != NULL) BIO_free(in);
-       return(ret);
-       }
-#endif
+{
+    int ret;
+    EVP_PKEY *pkey;
+
+    if (rsa == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+    if ((pkey = EVP_PKEY_new()) == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY, ERR_R_EVP_LIB);
+        return 0;
+    }
+
+    RSA_up_ref(rsa);
+    if (EVP_PKEY_assign_RSA(pkey, rsa) <= 0) {
+        RSA_free(rsa);
+        EVP_PKEY_free(pkey);
+        return 0;
+    }
+
+    ret = ssl_set_pkey(ctx->cert, pkey);
+    EVP_PKEY_free(pkey);
+    return ret;
+}
 
-int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, unsigned char *d, long len)
-       {
-       int ret;
-       const unsigned char *p;
-       RSA *rsa;
-
-       p=d;
-       if ((rsa=d2i_RSAPrivateKey(NULL,&p,(long)len)) == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_ASN1,ERR_R_ASN1_LIB);
-               return(0);
-               }
-
-       ret=SSL_CTX_use_RSAPrivateKey(ctx,rsa);
-       RSA_free(rsa);
-       return(ret);
-       }
-#endif /* !NO_RSA */
+int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type)
+{
+    int j, ret = 0;
+    BIO *in;
+    RSA *rsa = NULL;
+
+    in = BIO_new(BIO_s_file());
+    if (in == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, ERR_R_BUF_LIB);
+        goto end;
+    }
+
+    if (BIO_read_filename(in, file) <= 0) {
+        SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, ERR_R_SYS_LIB);
+        goto end;
+    }
+    if (type == SSL_FILETYPE_ASN1) {
+        j = ERR_R_ASN1_LIB;
+        rsa = d2i_RSAPrivateKey_bio(in, NULL);
+    } else if (type == SSL_FILETYPE_PEM) {
+        j = ERR_R_PEM_LIB;
+        rsa = PEM_read_bio_RSAPrivateKey(in, NULL,
+                                         ctx->default_passwd_callback,
+                                         ctx->default_passwd_callback_userdata);
+    } else {
+        SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE);
+        goto end;
+    }
+    if (rsa == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE, j);
+        goto end;
+    }
+    ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
+    RSA_free(rsa);
+ end:
+    BIO_free(in);
+    return ret;
+}
+
+int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d,
+                                   long len)
+{
+    int ret;
+    const unsigned char *p;
+    RSA *rsa;
+
+    p = d;
+    if ((rsa = d2i_RSAPrivateKey(NULL, &p, (long)len)) == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_ASN1, ERR_R_ASN1_LIB);
+        return 0;
+    }
+
+    ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
+    RSA_free(rsa);
+    return ret;
+}
+#endif                          /* !OPENSSL_NO_RSA */
 
 int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey)
-       {
-       if (pkey == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);
-               return(0);
-               }
-       if (!ssl_cert_inst(&ctx->cert))
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY,ERR_R_MALLOC_FAILURE);
-               return(0);
-               }
-       return(ssl_set_pkey(ctx->cert,pkey));
-       }
-
-#ifndef NO_STDIO
-int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type)
-       {
-       int j,ret=0;
-       BIO *in;
-       EVP_PKEY *pkey=NULL;
-
-       in=BIO_new(BIO_s_file_internal());
-       if (in == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE,ERR_R_BUF_LIB);
-               goto end;
-               }
-
-       if (BIO_read_filename(in,file) <= 0)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE,ERR_R_SYS_LIB);
-               goto end;
-               }
-       if (type == SSL_FILETYPE_PEM)
-               {
-               j=ERR_R_PEM_LIB;
-               pkey=PEM_read_bio_PrivateKey(in,NULL,
-                       ctx->default_passwd_callback,ctx->default_passwd_callback_userdata);
-               }
-       else
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);
-               goto end;
-               }
-       if (pkey == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE,j);
-               goto end;
-               }
-       ret=SSL_CTX_use_PrivateKey(ctx,pkey);
-       EVP_PKEY_free(pkey);
-end:
-       if (in != NULL) BIO_free(in);
-       return(ret);
-       }
-#endif
+{
+    if (pkey == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+    return ssl_set_pkey(ctx->cert, pkey);
+}
 
-int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx, unsigned char *d,
-            long len)
-       {
-       int ret;
-       unsigned char *p;
-       EVP_PKEY *pkey;
-
-       p=d;
-       if ((pkey=d2i_PrivateKey(type,NULL,&p,(long)len)) == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_ASN1,ERR_R_ASN1_LIB);
-               return(0);
-               }
-
-       ret=SSL_CTX_use_PrivateKey(ctx,pkey);
-       EVP_PKEY_free(pkey);
-       return(ret);
-       }
-
-
-#ifndef NO_STDIO
-/* Read a file that contains our certificate in "PEM" format,
- * possibly followed by a sequence of CA certificates that should be
- * sent to the peer in the Certificate message.
+int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type)
+{
+    int j, ret = 0;
+    BIO *in;
+    EVP_PKEY *pkey = NULL;
+
+    in = BIO_new(BIO_s_file());
+    if (in == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, ERR_R_BUF_LIB);
+        goto end;
+    }
+
+    if (BIO_read_filename(in, file) <= 0) {
+        SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, ERR_R_SYS_LIB);
+        goto end;
+    }
+    if (type == SSL_FILETYPE_PEM) {
+        j = ERR_R_PEM_LIB;
+        pkey = PEM_read_bio_PrivateKey(in, NULL,
+                                       ctx->default_passwd_callback,
+                                       ctx->default_passwd_callback_userdata);
+    } else if (type == SSL_FILETYPE_ASN1) {
+        j = ERR_R_ASN1_LIB;
+        pkey = d2i_PrivateKey_bio(in, NULL);
+    } else {
+        SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, SSL_R_BAD_SSL_FILETYPE);
+        goto end;
+    }
+    if (pkey == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, j);
+        goto end;
+    }
+    ret = SSL_CTX_use_PrivateKey(ctx, pkey);
+    EVP_PKEY_free(pkey);
+ end:
+    BIO_free(in);
+    return ret;
+}
+
+int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx,
+                                const unsigned char *d, long len)
+{
+    int ret;
+    const unsigned char *p;
+    EVP_PKEY *pkey;
+
+    p = d;
+    if ((pkey = d2i_PrivateKey(type, NULL, &p, (long)len)) == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_ASN1, ERR_R_ASN1_LIB);
+        return 0;
+    }
+
+    ret = SSL_CTX_use_PrivateKey(ctx, pkey);
+    EVP_PKEY_free(pkey);
+    return ret;
+}
+
+/*
+ * Read a file that contains our certificate in "PEM" format, possibly
+ * followed by a sequence of CA certificates that should be sent to the peer
+ * in the Certificate message.
  */
+static int use_certificate_chain_file(SSL_CTX *ctx, SSL *ssl, const char *file)
+{
+    BIO *in;
+    int ret = 0;
+    X509 *x = NULL;
+    pem_password_cb *passwd_callback;
+    void *passwd_callback_userdata;
+
+    ERR_clear_error();          /* clear error stack for
+                                 * SSL_CTX_use_certificate() */
+
+    if (ctx != NULL) {
+        passwd_callback = ctx->default_passwd_callback;
+        passwd_callback_userdata = ctx->default_passwd_callback_userdata;
+    } else {
+        passwd_callback = ssl->default_passwd_callback;
+        passwd_callback_userdata = ssl->default_passwd_callback_userdata;
+    }
+
+    in = BIO_new(BIO_s_file());
+    if (in == NULL) {
+        SSLerr(SSL_F_USE_CERTIFICATE_CHAIN_FILE, ERR_R_BUF_LIB);
+        goto end;
+    }
+
+    if (BIO_read_filename(in, file) <= 0) {
+        SSLerr(SSL_F_USE_CERTIFICATE_CHAIN_FILE, ERR_R_SYS_LIB);
+        goto end;
+    }
+
+    x = PEM_read_bio_X509_AUX(in, NULL, passwd_callback,
+                              passwd_callback_userdata);
+    if (x == NULL) {
+        SSLerr(SSL_F_USE_CERTIFICATE_CHAIN_FILE, ERR_R_PEM_LIB);
+        goto end;
+    }
+
+    if (ctx)
+        ret = SSL_CTX_use_certificate(ctx, x);
+    else
+        ret = SSL_use_certificate(ssl, x);
+
+    if (ERR_peek_error() != 0)
+        ret = 0;                /* Key/certificate mismatch doesn't imply
+                                 * ret==0 ... */
+    if (ret) {
+        /*
+         * If we could set up our certificate, now proceed to the CA
+         * certificates.
+         */
+        X509 *ca;
+        int r;
+        unsigned long err;
+
+        if (ctx)
+            r = SSL_CTX_clear_chain_certs(ctx);
+        else
+            r = SSL_clear_chain_certs(ssl);
+
+        if (r == 0) {
+            ret = 0;
+            goto end;
+        }
+
+        while ((ca = PEM_read_bio_X509(in, NULL, passwd_callback,
+                                       passwd_callback_userdata))
+               != NULL) {
+            if (ctx)
+                r = SSL_CTX_add0_chain_cert(ctx, ca);
+            else
+                r = SSL_add0_chain_cert(ssl, ca);
+            /*
+             * Note that we must not free ca if it was successfully added to
+             * the chain (while we must free the main certificate, since its
+             * reference count is increased by SSL_CTX_use_certificate).
+             */
+            if (!r) {
+                X509_free(ca);
+                ret = 0;
+                goto end;
+            }
+        }
+        /* When the while loop ends, it's usually just EOF. */
+        err = ERR_peek_last_error();
+        if (ERR_GET_LIB(err) == ERR_LIB_PEM
+            && ERR_GET_REASON(err) == PEM_R_NO_START_LINE)
+            ERR_clear_error();
+        else
+            ret = 0;            /* some real error */
+    }
+
+ end:
+    X509_free(x);
+    BIO_free(in);
+    return ret;
+}
+
 int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file)
-       {
-       BIO *in;
-       int ret=0;
-       X509 *x=NULL;
-
-       in=BIO_new(BIO_s_file_internal());
-       if (in == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE,ERR_R_BUF_LIB);
-               goto end;
-               }
-
-       if (BIO_read_filename(in,file) <= 0)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE,ERR_R_SYS_LIB);
-               goto end;
-               }
-
-       x=PEM_read_bio_X509(in,NULL,ctx->default_passwd_callback,ctx->default_passwd_callback_userdata);
-       if (x == NULL)
-               {
-               SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE,ERR_R_PEM_LIB);
-               goto end;
-               }
-
-       ret=SSL_CTX_use_certificate(ctx,x);
-       if (ERR_peek_error() != 0)
-               ret = 0;  /* Key/certificate mismatch doesn't imply ret==0 ... */
-       if (ret)
-               {
-               /* If we could set up our certificate, now proceed to
-                * the CA certificates.
-                */
-               X509 *ca;
-               int r;
-               unsigned long err;
-               
-               if (ctx->extra_certs != NULL) 
-                       {
-                       sk_X509_pop_free(ctx->extra_certs, X509_free);
-                       ctx->extra_certs = NULL;
-                       }
-
-               while ((ca = PEM_read_bio_X509(in,NULL,ctx->default_passwd_callback,ctx->default_passwd_callback_userdata))
-                       != NULL)
-                       {
-                       r = SSL_CTX_add_extra_chain_cert(ctx, ca);
-                       if (!r) 
-                               {
-                               X509_free(ca);
-                               ret = 0;
-                               goto end;
-                               }
-                       /* Note that we must not free r if it was successfully
-                        * added to the chain (while we must free the main
-                        * certificate, since its reference count is increased
-                        * by SSL_CTX_use_certificate). */
-                       }
-               /* When the while loop ends, it's usually just EOF. */
-               err = ERR_peek_error();
-               if (ERR_GET_LIB(err) == ERR_LIB_PEM && ERR_GET_REASON(err) == PEM_R_NO_START_LINE)
-                       (void) ERR_get_error();
-               else 
-                       ret = 0; /* some real error */
-               }
-
-end:
-       if (x != NULL) X509_free(x);
-       if (in != NULL) BIO_free(in);
-       return(ret);
-       }
+{
+    return use_certificate_chain_file(ctx, NULL, file);
+}
+
+int SSL_use_certificate_chain_file(SSL *ssl, const char *file)
+{
+    return use_certificate_chain_file(NULL, ssl, file);
+}
+
+static int serverinfo_find_extension(const unsigned char *serverinfo,
+                                     size_t serverinfo_length,
+                                     unsigned int extension_type,
+                                     const unsigned char **extension_data,
+                                     size_t *extension_length)
+{
+    PACKET pkt, data;
+
+    *extension_data = NULL;
+    *extension_length = 0;
+    if (serverinfo == NULL || serverinfo_length == 0)
+        return -1;
+
+    if (!PACKET_buf_init(&pkt, serverinfo, serverinfo_length))
+        return -1;
+
+    for (;;) {
+        unsigned int type = 0;
+        unsigned long context = 0;
+
+        /* end of serverinfo */
+        if (PACKET_remaining(&pkt) == 0)
+            return 0;           /* Extension not found */
+
+        if (!PACKET_get_net_4(&pkt, &context)
+                || !PACKET_get_net_2(&pkt, &type)
+                || !PACKET_get_length_prefixed_2(&pkt, &data))
+            return -1;
+
+        if (type == extension_type) {
+            *extension_data = PACKET_data(&data);
+            *extension_length = PACKET_remaining(&data);;
+            return 1;           /* Success */
+        }
+    }
+    /* Unreachable */
+}
+
+static int serverinfoex_srv_parse_cb(SSL *s, unsigned int ext_type,
+                                     unsigned int context,
+                                     const unsigned char *in,
+                                     size_t inlen, X509 *x, size_t chainidx,
+                                     int *al, void *arg)
+{
+
+    if (inlen != 0) {
+        *al = SSL_AD_DECODE_ERROR;
+        return 0;
+    }
+
+    return 1;
+}
+
+static int serverinfo_srv_parse_cb(SSL *s, unsigned int ext_type,
+                                   const unsigned char *in,
+                                   size_t inlen, int *al, void *arg)
+{
+    return serverinfoex_srv_parse_cb(s, ext_type, 0, in, inlen, NULL, 0, al,
+                                     arg);
+}
+
+static int serverinfoex_srv_add_cb(SSL *s, unsigned int ext_type,
+                                   unsigned int context,
+                                   const unsigned char **out,
+                                   size_t *outlen, X509 *x, size_t chainidx,
+                                   int *al, void *arg)
+{
+    const unsigned char *serverinfo = NULL;
+    size_t serverinfo_length = 0;
+
+    /* We only support extensions for the first Certificate */
+    if ((context & SSL_EXT_TLS1_3_CERTIFICATE) != 0 && chainidx > 0)
+        return 0;
+
+    /* Is there serverinfo data for the chosen server cert? */
+    if ((ssl_get_server_cert_serverinfo(s, &serverinfo,
+                                        &serverinfo_length)) != 0) {
+        /* Find the relevant extension from the serverinfo */
+        int retval = serverinfo_find_extension(serverinfo, serverinfo_length,
+                                               ext_type, out, outlen);
+        if (retval == -1) {
+            *al = SSL_AD_INTERNAL_ERROR;
+            return -1;          /* Error */
+        }
+        if (retval == 0)
+            return 0;           /* No extension found, don't send extension */
+        return 1;               /* Send extension */
+    }
+    return 0;                   /* No serverinfo data found, don't send
+                                 * extension */
+}
+
+static int serverinfo_srv_add_cb(SSL *s, unsigned int ext_type,
+                                 const unsigned char **out, size_t *outlen,
+                                 int *al, void *arg)
+{
+    return serverinfoex_srv_add_cb(s, ext_type, 0, out, outlen, NULL, 0, al,
+                                   arg);
+}
+
+/*
+ * With a NULL context, this function just checks that the serverinfo data
+ * parses correctly.  With a non-NULL context, it registers callbacks for
+ * the included extensions.
+ */
+static int serverinfo_process_buffer(unsigned int version,
+                                     const unsigned char *serverinfo,
+                                     size_t serverinfo_length, SSL_CTX *ctx)
+{
+    PACKET pkt;
+
+    if (serverinfo == NULL || serverinfo_length == 0)
+        return 0;
+
+    if (version != SSL_SERVERINFOV1 && version != SSL_SERVERINFOV2)
+        return 0;
+
+    if (!PACKET_buf_init(&pkt, serverinfo, serverinfo_length))
+        return 0;
+
+    while (PACKET_remaining(&pkt)) {
+        unsigned long context = 0;
+        unsigned int ext_type = 0;
+        PACKET data;
+
+        if ((version == SSL_SERVERINFOV2 && !PACKET_get_net_4(&pkt, &context))
+                || !PACKET_get_net_2(&pkt, &ext_type)
+                || !PACKET_get_length_prefixed_2(&pkt, &data))
+            return 0;
+
+        if (ctx == NULL)
+            continue;
+
+        /*
+         * The old style custom extensions API could be set separately for
+         * server/client, i.e. you could set one custom extension for a client,
+         * and *for the same extension in the same SSL_CTX* you could set a
+         * custom extension for the server as well. It seems quite weird to be
+         * setting a custom extension for both client and server in a single
+         * SSL_CTX - but theoretically possible. This isn't possible in the
+         * new API. Therefore, if we have V1 serverinfo we use the old API. We
+         * also use the old API even if we have V2 serverinfo but the context
+         * looks like an old style <= TLSv1.2 extension.
+         */
+        if (version == SSL_SERVERINFOV1 || context == SYNTHV1CONTEXT) {
+            if (!SSL_CTX_add_server_custom_ext(ctx, ext_type,
+                                               serverinfo_srv_add_cb,
+                                               NULL, NULL,
+                                               serverinfo_srv_parse_cb,
+                                               NULL))
+                return 0;
+        } else {
+            if (!SSL_CTX_add_custom_ext(ctx, ext_type, context,
+                                        serverinfoex_srv_add_cb,
+                                        NULL, NULL,
+                                        serverinfoex_srv_parse_cb,
+                                        NULL))
+                return 0;
+        }
+    }
+
+    return 1;
+}
+
+int SSL_CTX_use_serverinfo_ex(SSL_CTX *ctx, unsigned int version,
+                              const unsigned char *serverinfo,
+                              size_t serverinfo_length)
+{
+    unsigned char *new_serverinfo;
+
+    if (ctx == NULL || serverinfo == NULL || serverinfo_length == 0) {
+        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+    if (!serverinfo_process_buffer(version, serverinfo, serverinfo_length,
+                                   NULL)) {
+        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, SSL_R_INVALID_SERVERINFO_DATA);
+        return 0;
+    }
+    if (ctx->cert->key == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, ERR_R_INTERNAL_ERROR);
+        return 0;
+    }
+    new_serverinfo = OPENSSL_realloc(ctx->cert->key->serverinfo,
+                                     serverinfo_length);
+    if (new_serverinfo == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    ctx->cert->key->serverinfo = new_serverinfo;
+    memcpy(ctx->cert->key->serverinfo, serverinfo, serverinfo_length);
+    ctx->cert->key->serverinfo_length = serverinfo_length;
+
+    /*
+     * Now that the serverinfo is validated and stored, go ahead and
+     * register callbacks.
+     */
+    if (!serverinfo_process_buffer(version, serverinfo, serverinfo_length,
+                                   ctx)) {
+        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_EX, SSL_R_INVALID_SERVERINFO_DATA);
+        return 0;
+    }
+    return 1;
+}
+
+int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
+                           size_t serverinfo_length)
+{
+    return SSL_CTX_use_serverinfo_ex(ctx, SSL_SERVERINFOV1, serverinfo,
+                                     serverinfo_length);
+}
+
+int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file)
+{
+    unsigned char *serverinfo = NULL;
+    unsigned char *tmp;
+    size_t serverinfo_length = 0;
+    unsigned char *extension = 0;
+    long extension_length = 0;
+    char *name = NULL;
+    char *header = NULL;
+    char namePrefix1[] = "SERVERINFO FOR ";
+    char namePrefix2[] = "SERVERINFOV2 FOR ";
+    int ret = 0;
+    BIO *bin = NULL;
+    size_t num_extensions = 0, contextoff = 0;
+
+    if (ctx == NULL || file == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_PASSED_NULL_PARAMETER);
+        goto end;
+    }
+
+    bin = BIO_new(BIO_s_file());
+    if (bin == NULL) {
+        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_BUF_LIB);
+        goto end;
+    }
+    if (BIO_read_filename(bin, file) <= 0) {
+        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_SYS_LIB);
+        goto end;
+    }
+
+    for (num_extensions = 0;; num_extensions++) {
+        unsigned int version;
+
+        if (PEM_read_bio(bin, &name, &header, &extension, &extension_length)
+            == 0) {
+            /*
+             * There must be at least one extension in this file
+             */
+            if (num_extensions == 0) {
+                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE,
+                       SSL_R_NO_PEM_EXTENSIONS);
+                goto end;
+            } else              /* End of file, we're done */
+                break;
+        }
+        /* Check that PEM name starts with "BEGIN SERVERINFO FOR " */
+        if (strlen(name) < strlen(namePrefix1)) {
+            SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_PEM_NAME_TOO_SHORT);
+            goto end;
+        }
+        if (strncmp(name, namePrefix1, strlen(namePrefix1)) == 0) {
+            version = SSL_SERVERINFOV1;
+        } else {
+            if (strlen(name) < strlen(namePrefix2)) {
+                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE,
+                       SSL_R_PEM_NAME_TOO_SHORT);
+                goto end;
+            }
+            if (strncmp(name, namePrefix2, strlen(namePrefix2)) != 0) {
+                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE,
+                       SSL_R_PEM_NAME_BAD_PREFIX);
+                goto end;
+            }
+            version = SSL_SERVERINFOV2;
+        }
+        /*
+         * Check that the decoded PEM data is plausible (valid length field)
+         */
+        if (version == SSL_SERVERINFOV1) {
+            /* 4 byte header: 2 bytes type, 2 bytes len */
+            if (extension_length < 4
+                    || (extension[2] << 8) + extension[3]
+                       != extension_length - 4) {
+                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_BAD_DATA);
+                goto end;
+            }
+            /*
+             * File does not have a context value so we must take account of
+             * this later.
+             */
+            contextoff = 4;
+        } else {
+            /* 8 byte header: 4 bytes context, 2 bytes type, 2 bytes len */
+            if (extension_length < 8
+                    || (extension[6] << 8) + extension[7]
+                       != extension_length - 8) {
+                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_BAD_DATA);
+                goto end;
+            }
+        }
+        /* Append the decoded extension to the serverinfo buffer */
+        tmp = OPENSSL_realloc(serverinfo, serverinfo_length + extension_length
+                                          + contextoff);
+        if (tmp == NULL) {
+            SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_MALLOC_FAILURE);
+            goto end;
+        }
+        serverinfo = tmp;
+        if (contextoff > 0) {
+            unsigned char *sinfo = serverinfo + serverinfo_length;
+
+            /* We know this only uses the last 2 bytes */
+            sinfo[0] = 0;
+            sinfo[1] = 0;
+            sinfo[2] = (SYNTHV1CONTEXT >> 8) & 0xff;
+            sinfo[3] = SYNTHV1CONTEXT & 0xff;
+        }
+        memcpy(serverinfo + serverinfo_length + contextoff,
+               extension, extension_length);
+        serverinfo_length += extension_length + contextoff;
+
+        OPENSSL_free(name);
+        name = NULL;
+        OPENSSL_free(header);
+        header = NULL;
+        OPENSSL_free(extension);
+        extension = NULL;
+    }
+
+    ret = SSL_CTX_use_serverinfo_ex(ctx, SSL_SERVERINFOV2, serverinfo,
+                                    serverinfo_length);
+ end:
+    /* SSL_CTX_use_serverinfo makes a local copy of the serverinfo. */
+    OPENSSL_free(name);
+    OPENSSL_free(header);
+    OPENSSL_free(extension);
+    OPENSSL_free(serverinfo);
+    BIO_free(bin);
+    return ret;
+}
+
+static int ssl_set_cert_and_key(SSL *ssl, SSL_CTX *ctx, X509 *x509, EVP_PKEY *privatekey,
+                                STACK_OF(X509) *chain, int override)
+{
+    int ret = 0;
+    size_t i;
+    int j;
+    int rv;
+    CERT *c = ssl != NULL ? ssl->cert : ctx->cert;
+    STACK_OF(X509) *dup_chain = NULL;
+    EVP_PKEY *pubkey = NULL;
+
+    /* Do all security checks before anything else */
+    rv = ssl_security_cert(ssl, ctx, x509, 0, 1);
+    if (rv != 1) {
+        SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, rv);
+        goto out;
+    }
+    for (j = 0; j < sk_X509_num(chain); j++) {
+        rv = ssl_security_cert(ssl, ctx, sk_X509_value(chain, j), 0, 0);
+        if (rv != 1) {
+            SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, rv);
+            goto out;
+        }
+    }
+
+    pubkey = X509_get_pubkey(x509); /* bumps reference */
+    if (pubkey == NULL)
+        goto out;
+    if (privatekey == NULL) {
+        privatekey = pubkey;
+    } else {
+        /* For RSA, which has no parameters, missing returns 0 */
+        if (EVP_PKEY_missing_parameters(privatekey)) {
+            if (EVP_PKEY_missing_parameters(pubkey)) {
+                /* nobody has parameters? - error */
+                SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, SSL_R_MISSING_PARAMETERS);
+                goto out;
+            } else {
+                /* copy to privatekey from pubkey */
+                EVP_PKEY_copy_parameters(privatekey, pubkey);
+            }
+        } else if (EVP_PKEY_missing_parameters(pubkey)) {
+            /* copy to pubkey from privatekey */
+            EVP_PKEY_copy_parameters(pubkey, privatekey);
+        } /* else both have parameters */
+
+        /* Copied from ssl_set_cert/pkey */
+#ifndef OPENSSL_NO_RSA
+        if ((EVP_PKEY_id(privatekey) == EVP_PKEY_RSA) &&
+            ((RSA_flags(EVP_PKEY_get0_RSA(privatekey)) & RSA_METHOD_FLAG_NO_CHECK)))
+            /* no-op */ ;
+        else
 #endif
+        /* check that key <-> cert match */
+        if (EVP_PKEY_cmp(pubkey, privatekey) != 1) {
+            SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, SSL_R_PRIVATE_KEY_MISMATCH);
+            goto out;
+        }
+    }
+    if (ssl_cert_lookup_by_pkey(pubkey, &i) == NULL) {
+        SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
+        goto out;
+    }
+
+    if (!override && (c->pkeys[i].x509 != NULL
+                      || c->pkeys[i].privatekey != NULL
+                      || c->pkeys[i].chain != NULL)) {
+        /* No override, and something already there */
+        SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, SSL_R_NOT_REPLACING_CERTIFICATE);
+        goto out;
+    }
+
+    if (chain != NULL) {
+        dup_chain = X509_chain_up_ref(chain);
+        if  (dup_chain == NULL) {
+            SSLerr(SSL_F_SSL_SET_CERT_AND_KEY, ERR_R_MALLOC_FAILURE);
+            goto out;
+        }
+    }
+
+    sk_X509_pop_free(c->pkeys[i].chain, X509_free);
+    c->pkeys[i].chain = dup_chain;
+
+    X509_free(c->pkeys[i].x509);
+    X509_up_ref(x509);
+    c->pkeys[i].x509 = x509;
+
+    EVP_PKEY_free(c->pkeys[i].privatekey);
+    EVP_PKEY_up_ref(privatekey);
+    c->pkeys[i].privatekey = privatekey;
+
+    c->key = &(c->pkeys[i]);
+
+    ret = 1;
+ out:
+    EVP_PKEY_free(pubkey);
+    return ret;
+}
+
+int SSL_use_cert_and_key(SSL *ssl, X509 *x509, EVP_PKEY *privatekey,
+                         STACK_OF(X509) *chain, int override)
+{
+    return ssl_set_cert_and_key(ssl, NULL, x509, privatekey, chain, override);
+}
+
+int SSL_CTX_use_cert_and_key(SSL_CTX *ctx, X509 *x509, EVP_PKEY *privatekey,
+                             STACK_OF(X509) *chain, int override)
+{
+    return ssl_set_cert_and_key(NULL, ctx, x509, privatekey, chain, override);
+}