Import of SSLeay-0.9.0b with RSA and IDEA stubbed + OpenBSD build

functionality for shared libs.

Note that routines such as sslv2_init and friends that use RSA will
not work due to lack of RSA in this library.

Needs documentation and help from ports for easy upgrade to full
functionality where legally possible.

5 files changed, 488 insertions, 0 deletions

diff --git a/lib/libssl/src/demos/sign/cert.pem b/lib/libssl/src/demos/sign/cert.pem
new file mode 100644
index 00000000000..9d7ac238d86
--- /dev/null
+++ b/lib/libssl/src/demos/sign/cert.pem
@@ -0,0 +1,14 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/lib/libssl/src/demos/sign/key.pem b/lib/libssl/src/demos/sign/key.pem
new file mode 100644
index 00000000000..239ad66f990
--- /dev/null
+++ b/lib/libssl/src/demos/sign/key.pem
@@ -0,0 +1,9 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIBPAIBAAJBAL7+aty3S1iBA/+yxjxv4q1MUTd1kjNwL4lYKbpzzlmC5beaQXeQ
+2RmGMTXU+mDvuqItjVHOK3DvPK7lTcSGftUCAwEAAQJBALjkK+jc2+iihI98riEF
+oudmkNziSRTYjnwjx8mCoAjPWviB3c742eO3FG4/soi1jD9A5alihEOXfUzloenr
+8IECIQD3B5+0l+68BA/6d76iUNqAAV8djGTzvxnCxycnxPQydQIhAMXt4trUI3nc
+a+U8YL2HPFA3gmhBsSICbq2OptOCnM7hAiEA6Xi3JIQECob8YwkRj29DU3/4WYD7
+WLPgsQpwo1GuSpECICGsnWH5oaeD9t9jbFoSfhJvv0IZmxdcLpRcpslpeWBBAiEA
+6/5B8J0GHdJq89FHwEG/H2eVVUYu5y/aD6sgcm+0Avg=
+-----END RSA PRIVATE KEY-----
diff --git a/lib/libssl/src/demos/sign/sig.txt b/lib/libssl/src/demos/sign/sig.txt
new file mode 100644
index 00000000000..5613c0ee77b
--- /dev/null
+++ b/lib/libssl/src/demos/sign/sig.txt
@@ -0,0 +1,158 @@
+From ssl-lists-owner@mincom.com Mon Sep 30 02:37:40 1996
+Received: from cygnus.mincom.oz.au by orb.mincom.oz.au with SMTP id AA11782
+  (5.65c/IDA-1.4.4 for eay); Mon, 30 Sep 1996 11:46:21 +1000
+Received: (from daemon@localhost) by cygnus.mincom.oz.au (8.7.5/8.7.3) id LAA18980 for ssl-users-outgoing; Mon, 30 Sep 1996 11:44:56 +1000 (EST)
+Received: from minbne.mincom.oz.au (minbne.mincom.oz.au [192.55.196.247]) by cygnus.mincom.oz.au (8.7.5/8.7.3) with SMTP id LAA18962 for <ssl-users@listserv.mincom.oz.au>; Mon, 30 Sep 1996 11:44:51 +1000 (EST)
+Received: by minbne.mincom.oz.au id AA22230
+  (5.65c/IDA-1.4.4 for ssl-users@listserv.mincom.oz.au); Mon, 30 Sep 1996 11:38:41 +1000
+Received: from brutus.neuronio.pt (brutus.neuronio.pt [193.126.253.2]) by bunyip.cc.uq.oz.au (8.7.6/8.7.3) with SMTP id LAA15824 for <ssl-users@mincom.com>; Mon, 30 Sep 1996 11:40:07 +1000
+Received: (from sampo@localhost) by brutus.neuronio.pt (8.6.11/8.6.11) id BAA08729; Mon, 30 Sep 1996 01:37:40 +0100
+Date: Mon, 30 Sep 1996 01:37:40 +0100
+Message-Id: <199609300037.BAA08729@brutus.neuronio.pt>
+From: Sampo Kellomaki <sampo@neuronio.pt>
+To: ssl-users@mincom.com
+Cc: sampo@brutus.neuronio.pt
+Subject: Signing with envelope routines
+Sender: ssl-lists-owner@mincom.com
+Precedence: bulk
+Status: RO
+X-Status: D
+
+
+I have been trying to figure out how to produce signatures with EVP_
+routines. I seem to be able to read in private key and sign some
+data ok, but I can't figure out how I am supposed to read in
+public key so that I could verify my signature. I use self signed
+certificate.
+
+I figured I should use
+	EVP_PKEY* pkey = PEM_ASN1_read(d2i_PrivateKey, PEM_STRING_EVP_PKEY,
+	                               fp, NULL, NULL);
+to read in private key and this seems to work Ok.
+
+However when I try analogous
+	EVP_PKEY* pkey = PEM_ASN1_read(d2i_PublicKey, PEM_STRING_X509,
+	                               fp, NULL, NULL);
+the program fails with
+
+error:0D09508D:asn1 encoding routines:D2I_PUBLICKEY:unknown public key type:d2i_pu.c:93
+error:0906700D:PEM routines:PEM_ASN1_read_bio:ASN1 lib:pem_lib.c:232
+
+I figured that the second argument to PEM_ASN1_read should match the
+name in my PEM encoded object, hence PEM_STRING_X509.
+PEM_STRING_EVP_PKEY seems to be somehow magical
+because it matches whatever private key there happens to be. I could
+not find a similar constant to use with getting the certificate, however.
+
+Is my approach of using PEM_ASN1_read correct? What should I pass in
+as name?  Can I use normal (or even self signed) X509 certificate for
+verifying the signature?
+
+When will SSLeay documentation be written ;-)? If I would contribute
+comments to the code, would Eric take time to review them and include
+them in distribution?
+
+I'm using SSLeay-0.6.4. My program is included below along with the
+key and cert that I use.
+
+--Sampo
+
+-----------------------------------
+/* sign-it.cpp  -  Simple test app using SSLeay envelopes to sign data
+   29.9.1996, Sampo Kellomaki <sampo@iki.fi> */
+
+#include <stdio.h>
+#include "rsa.h"
+#include "evp.h"
+#include "objects.h"
+#include "x509.h"
+#include "err.h"
+#include "pem.h"
+#include "ssl.h"
+
+void main ()
+{
+  int err;
+  int sig_len;
+  unsigned char sig_buf [4096];
+  const char certfile[] = "plain-cert.pem";
+  const char keyfile[]  = "plain-key.pem";
+  const char data[]     = "I owe you...";
+  EVP_MD_CTX     md_ctx;
+  EVP_PKEY*      pkey;
+  FILE*          fp;
+
+  SSL_load_error_strings();
+  
+  /* Read private key */
+  
+  fp = fopen (keyfile, "r");   if (fp == NULL) exit (1);
+  pkey = (EVP_PKEY*)PEM_ASN1_read ((char *(*)())d2i_PrivateKey,
+				   PEM_STRING_EVP_PKEY,
+				   fp,
+				   NULL, NULL);
+  if (pkey == NULL) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  fclose (fp);
+  
+  /* Do the signature */
+  
+  EVP_SignInit   (&md_ctx, EVP_md5());
+  EVP_SignUpdate (&md_ctx, data, strlen(data));
+  sig_len = sizeof(sig_buf);
+  err = EVP_SignFinal (&md_ctx,
+		       sig_buf, 
+		       &sig_len,
+		       pkey);
+  if (err != 1) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  EVP_PKEY_free (pkey);
+  
+  /* Read public key */
+  
+  fp = fopen (certfile, "r");   if (fp == NULL) exit (1);
+  pkey = (EVP_PKEY*)PEM_ASN1_read ((char *(*)())d2i_PublicKey,
+				   PEM_STRING_X509,
+				   fp,
+				   NULL, NULL);
+  if (pkey == NULL) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  fclose (fp);
+  
+  /* Verify the signature */
+  
+  EVP_VerifyInit   (&md_ctx, EVP_md5());
+  EVP_VerifyUpdate (&md_ctx, data, strlen((char*)data));
+  err = EVP_VerifyFinal (&md_ctx,
+			 sig_buf,
+			 sig_len,
+			 pkey);
+  if (err != 1) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  EVP_PKEY_free (pkey);
+  printf ("Signature Verified Ok.\n");
+}
+/* EOF */
+--------------- plain-cert.pem -----------------
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+---------------- plain-key.pem -----------------
+-----BEGIN RSA PRIVATE KEY-----
+MIIBPAIBAAJBAL7+aty3S1iBA/+yxjxv4q1MUTd1kjNwL4lYKbpzzlmC5beaQXeQ
+2RmGMTXU+mDvuqItjVHOK3DvPK7lTcSGftUCAwEAAQJBALjkK+jc2+iihI98riEF
+oudmkNziSRTYjnwjx8mCoAjPWviB3c742eO3FG4/soi1jD9A5alihEOXfUzloenr
+8IECIQD3B5+0l+68BA/6d76iUNqAAV8djGTzvxnCxycnxPQydQIhAMXt4trUI3nc
+a+U8YL2HPFA3gmhBsSICbq2OptOCnM7hAiEA6Xi3JIQECob8YwkRj29DU3/4WYD7
+WLPgsQpwo1GuSpECICGsnWH5oaeD9t9jbFoSfhJvv0IZmxdcLpRcpslpeWBBAiEA
+6/5B8J0GHdJq89FHwEG/H2eVVUYu5y/aD6sgcm+0Avg=
+-----END RSA PRIVATE KEY-----
+------------------------------------------------
+
diff --git a/lib/libssl/src/demos/sign/sign.c b/lib/libssl/src/demos/sign/sign.c
new file mode 100644
index 00000000000..5cbce3cdc52
--- /dev/null
+++ b/lib/libssl/src/demos/sign/sign.c
@@ -0,0 +1,137 @@
+/* demos/sign/sign.c */
+/* 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.]
+ */
+
+/* sign-it.cpp  -  Simple test app using SSLeay envelopes to sign data
+   29.9.1996, Sampo Kellomaki <sampo@iki.fi> */
+
+/* converted to C - eay :-) */
+
+#include <stdio.h>
+#include "rsa.h"
+#include "evp.h"
+#include "objects.h"
+#include "x509.h"
+#include "err.h"
+#include "pem.h"
+#include "ssl.h"
+
+void main ()
+{
+  int err;
+  int sig_len;
+  unsigned char sig_buf [4096];
+  static char certfile[] = "cert.pem";
+  static char keyfile[]  = "key.pem";
+  static char data[]     = "I owe you...";
+  EVP_MD_CTX     md_ctx;
+  EVP_PKEY *      pkey;
+  FILE *          fp;
+  X509 *	x509;
+
+  /* Just load the crypto library error strings,
+   * SSL_load_error_strings() loads the crypto AND the SSL ones */
+  /* SSL_load_error_strings();*/
+  ERR_load_crypto_strings();
+  
+  /* Read private key */
+  
+  fp = fopen (keyfile, "r");   if (fp == NULL) exit (1);
+  pkey = (EVP_PKEY*)PEM_ASN1_read ((char *(*)())d2i_PrivateKey,
+				   PEM_STRING_EVP_PKEY,
+				   fp,
+				   NULL, NULL);
+  if (pkey == NULL) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  fclose (fp);
+  
+  /* Do the signature */
+  
+  EVP_SignInit   (&md_ctx, EVP_md5());
+  EVP_SignUpdate (&md_ctx, data, strlen(data));
+  sig_len = sizeof(sig_buf);
+  err = EVP_SignFinal (&md_ctx,
+		       sig_buf, 
+		       &sig_len,
+		       pkey);
+  if (err != 1) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  EVP_PKEY_free (pkey);
+  
+  /* Read public key */
+  
+  fp = fopen (certfile, "r");   if (fp == NULL) exit (1);
+  x509 = (X509 *)PEM_ASN1_read ((char *(*)())d2i_X509,
+				   PEM_STRING_X509,
+				   fp, NULL, NULL);
+  if (x509 == NULL) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  fclose (fp);
+  
+  /* Get public key - eay */
+  pkey=X509_extract_key(x509);
+  if (pkey == NULL) {  ERR_print_errors_fp (stderr);    exit (1);  }
+
+  /* Verify the signature */
+  
+  EVP_VerifyInit   (&md_ctx, EVP_md5());
+  EVP_VerifyUpdate (&md_ctx, data, strlen((char*)data));
+  err = EVP_VerifyFinal (&md_ctx,
+			 sig_buf,
+			 sig_len,
+			 pkey);
+  if (err != 1) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  EVP_PKEY_free (pkey);
+  printf ("Signature Verified Ok.\n");
+}
diff --git a/lib/libssl/src/demos/sign/sign.txt b/lib/libssl/src/demos/sign/sign.txt
new file mode 100644
index 00000000000..2aa2b46cc36
--- /dev/null
+++ b/lib/libssl/src/demos/sign/sign.txt
@@ -0,0 +1,170 @@
+From ssl-lists-owner@mincom.com Mon Sep 30 22:43:15 1996
+Received: from cygnus.mincom.oz.au by orb.mincom.oz.au with SMTP id AA12802
+  (5.65c/IDA-1.4.4 for eay); Mon, 30 Sep 1996 12:45:43 +1000
+Received: (from daemon@localhost) by cygnus.mincom.oz.au (8.7.5/8.7.3) id MAA25922 for ssl-users-outgoing; Mon, 30 Sep 1996 12:43:43 +1000 (EST)
+Received: from orb.mincom.oz.au (eay@orb.mincom.oz.au [192.55.197.1]) by cygnus.mincom.oz.au (8.7.5/8.7.3) with SMTP id MAA25900 for <ssl-users@listserv.mincom.oz.au>; Mon, 30 Sep 1996 12:43:39 +1000 (EST)
+Received: by orb.mincom.oz.au id AA12688
+  (5.65c/IDA-1.4.4 for ssl-users@listserv.mincom.oz.au); Mon, 30 Sep 1996 12:43:16 +1000
+Date: Mon, 30 Sep 1996 12:43:15 +1000 (EST)
+From: Eric Young <eay@mincom.com>
+X-Sender: eay@orb
+To: Sampo Kellomaki <sampo@neuronio.pt>
+Cc: ssl-users@mincom.com, sampo@brutus.neuronio.pt
+Subject: Re: Signing with envelope routines
+In-Reply-To: <199609300037.BAA08729@brutus.neuronio.pt>
+Message-Id: <Pine.SOL.3.91.960930121504.11800Y-100000@orb>
+Mime-Version: 1.0
+Content-Type: TEXT/PLAIN; charset=US-ASCII
+Sender: ssl-lists-owner@mincom.com
+Precedence: bulk
+Status: O
+X-Status: 
+
+
+On Mon, 30 Sep 1996, Sampo Kellomaki wrote:
+> I have been trying to figure out how to produce signatures with EVP_
+> routines. I seem to be able to read in private key and sign some
+> data ok, but I can't figure out how I am supposed to read in
+> public key so that I could verify my signature. I use self signed
+> certificate.
+
+hmm... a rather poorly documented are of the library at this point in time.
+
+> I figured I should use
+> 	EVP_PKEY* pkey = PEM_ASN1_read(d2i_PrivateKey, PEM_STRING_EVP_PKEY,
+> 	                               fp, NULL, NULL);
+> to read in private key and this seems to work Ok.
+> 
+> However when I try analogous
+> 	EVP_PKEY* pkey = PEM_ASN1_read(d2i_PublicKey, PEM_STRING_X509,
+> 	                               fp, NULL, NULL);
+
+What you should do is 
+	X509 *x509=PEM_read_X509(fp,NULL,NULL);
+	/* which is the same as PEM_ASN1_read(d2i_X509,PEM_STRING_X509,fp,
+	 * NULL,NULL); */
+Then
+	EVP_PKEY *pkey=X509_extract_key(x509);
+
+There is also a X509_REQ_extract_key(req);
+which gets the public key from a certificate request.
+
+I re-worked quite a bit of this when I cleaned up the dependancy on
+RSA as the private key.
+
+> I figured that the second argument to PEM_ASN1_read should match the
+> name in my PEM encoded object, hence PEM_STRING_X509.
+> PEM_STRING_EVP_PKEY seems to be somehow magical
+> because it matches whatever private key there happens to be. I could
+> not find a similar constant to use with getting the certificate, however.
+
+:-), PEM_STRING_EVP_PKEY is 'magical' :-).  In theory I should be using a
+standard such as PKCS#8 to store the private key so that the type is 
+encoded in the asn.1 encoding of the object.
+
+> Is my approach of using PEM_ASN1_read correct? What should I pass in
+> as name?  Can I use normal (or even self signed) X509 certificate for
+> verifying the signature?
+
+The actual public key is kept in the certificate, so basically you have 
+to load the certificate and then 'unpack' the public key from the 
+certificate.
+
+> When will SSLeay documentation be written ;-)? If I would contribute
+> comments to the code, would Eric take time to review them and include
+> them in distribution?
+
+:-) After SSLv3 and PKCS#7 :-).  I actually started doing a function list 
+but what I really need to do is do quite a few 'this is how you do xyz' 
+type documents.  I suppose the current method is to post to ssl-users and 
+I'll respond :-).
+
+I'll add a 'demo' directory for the next release, I've appended a 
+modified version of your program that works, you were very close :-).
+
+eric
+
+/* sign-it.cpp  -  Simple test app using SSLeay envelopes to sign data
+   29.9.1996, Sampo Kellomaki <sampo@iki.fi> */
+
+/* converted to C - eay :-) */
+
+#include <stdio.h>
+#include "rsa.h"
+#include "evp.h"
+#include "objects.h"
+#include "x509.h"
+#include "err.h"
+#include "pem.h"
+#include "ssl.h"
+
+void main ()
+{
+  int err;
+  int sig_len;
+  unsigned char sig_buf [4096];
+  static char certfile[] = "plain-cert.pem";
+  static char keyfile[]  = "plain-key.pem";
+  static char data[]     = "I owe you...";
+  EVP_MD_CTX     md_ctx;
+  EVP_PKEY *      pkey;
+  FILE *          fp;
+  X509 *	x509;
+
+  /* Just load the crypto library error strings,
+   * SSL_load_error_strings() loads the crypto AND the SSL ones */
+  /* SSL_load_error_strings();*/
+  ERR_load_crypto_strings();
+  
+  /* Read private key */
+  
+  fp = fopen (keyfile, "r");   if (fp == NULL) exit (1);
+  pkey = (EVP_PKEY*)PEM_ASN1_read ((char *(*)())d2i_PrivateKey,
+				   PEM_STRING_EVP_PKEY,
+				   fp,
+				   NULL, NULL);
+  if (pkey == NULL) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  fclose (fp);
+  
+  /* Do the signature */
+  
+  EVP_SignInit   (&md_ctx, EVP_md5());
+  EVP_SignUpdate (&md_ctx, data, strlen(data));
+  sig_len = sizeof(sig_buf);
+  err = EVP_SignFinal (&md_ctx,
+		       sig_buf, 
+		       &sig_len,
+		       pkey);
+  if (err != 1) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  EVP_PKEY_free (pkey);
+  
+  /* Read public key */
+  
+  fp = fopen (certfile, "r");   if (fp == NULL) exit (1);
+  x509 = (X509 *)PEM_ASN1_read ((char *(*)())d2i_X509,
+				   PEM_STRING_X509,
+				   fp, NULL, NULL);
+  if (x509 == NULL) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  fclose (fp);
+  
+  /* Get public key - eay */
+  pkey=X509_extract_key(x509);
+  if (pkey == NULL) {  ERR_print_errors_fp (stderr);    exit (1);  }
+
+  /* Verify the signature */
+  
+  EVP_VerifyInit   (&md_ctx, EVP_md5());
+  EVP_VerifyUpdate (&md_ctx, data, strlen((char*)data));
+  err = EVP_VerifyFinal (&md_ctx,
+			 sig_buf,
+			 sig_len,
+			 pkey);
+  if (err != 1) {  ERR_print_errors_fp (stderr);    exit (1);  }
+  EVP_PKEY_free (pkey);
+  printf ("Signature Verified Ok.\n");
+}
+
+
+
+
+