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diff --git a/openssl/demos/sign/sign.c b/openssl/demos/sign/sign.c
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+/* 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 :-) */
+
+/*
+ * reformated a bit and converted to use the more common functions: this was
+ * initially written at the dawn of time :-) - Steve.
+ */
+
+#include <stdio.h>
+#include <openssl/rsa.h>
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+#include <openssl/x509.h>
+#include <openssl/err.h>
+#include <openssl/pem.h>
+#include <openssl/ssl.h>
+
+int 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 = PEM_read_PrivateKey(fp, NULL, NULL, NULL);
+    fclose(fp);
+
+    if (pkey == NULL) {
+        ERR_print_errors_fp(stderr);
+        exit(1);
+    }
+
+    /* Do the signature */
+
+    EVP_SignInit(&md_ctx, EVP_sha1());
+    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 = PEM_read_X509(fp, NULL, NULL, NULL);
+    fclose(fp);
+
+    if (x509 == NULL) {
+        ERR_print_errors_fp(stderr);
+        exit(1);
+    }
+
+    /* Get public key - eay */
+    pkey = X509_get_pubkey(x509);
+    if (pkey == NULL) {
+        ERR_print_errors_fp(stderr);
+        exit(1);
+    }
+
+    /* Verify the signature */
+
+    EVP_VerifyInit(&md_ctx, EVP_sha1());
+    EVP_VerifyUpdate(&md_ctx, data, strlen((char *)data));
+    err = EVP_VerifyFinal(&md_ctx, sig_buf, sig_len, pkey);
+    EVP_PKEY_free(pkey);
+
+    if (err != 1) {
+        ERR_print_errors_fp(stderr);
+        exit(1);
+    }
+    printf("Signature Verified Ok.\n");
+    return (0);
+}