From 3e4d8f433239c40311037616b1b8833a06651ae0 Mon Sep 17 00:00:00 2001
From: Arne Schwabe <arne@rfc2549.org>
Date: Mon, 16 Apr 2012 19:21:14 +0200
Subject: Initial import

---
 openssl/crypto/evp/p_seal.c | 115 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 openssl/crypto/evp/p_seal.c

(limited to 'openssl/crypto/evp/p_seal.c')

diff --git a/openssl/crypto/evp/p_seal.c b/openssl/crypto/evp/p_seal.c
new file mode 100644
index 00000000..d8324526
--- /dev/null
+++ b/openssl/crypto/evp/p_seal.c
@@ -0,0 +1,115 @@
+/* crypto/evp/p_seal.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.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/rand.h>
+#ifndef OPENSSL_NO_RSA
+#include <openssl/rsa.h>
+#endif
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+#include <openssl/x509.h>
+
+int EVP_SealInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type, unsigned char **ek,
+	     int *ekl, unsigned char *iv, EVP_PKEY **pubk, int npubk)
+	{
+	unsigned char key[EVP_MAX_KEY_LENGTH];
+	int i;
+	
+	if(type) {
+		EVP_CIPHER_CTX_init(ctx);
+		if(!EVP_EncryptInit_ex(ctx,type,NULL,NULL,NULL)) return 0;
+	}
+	if ((npubk <= 0) || !pubk)
+		return 1;
+	if (EVP_CIPHER_CTX_rand_key(ctx, key) <= 0)
+		return 0;
+	if (EVP_CIPHER_CTX_iv_length(ctx))
+		RAND_pseudo_bytes(iv,EVP_CIPHER_CTX_iv_length(ctx));
+
+	if(!EVP_EncryptInit_ex(ctx,NULL,NULL,key,iv)) return 0;
+
+	for (i=0; i<npubk; i++)
+		{
+		ekl[i]=EVP_PKEY_encrypt_old(ek[i],key,EVP_CIPHER_CTX_key_length(ctx),
+			pubk[i]);
+		if (ekl[i] <= 0) return(-1);
+		}
+	return(npubk);
+	}
+
+/* MACRO
+void EVP_SealUpdate(ctx,out,outl,in,inl)
+EVP_CIPHER_CTX *ctx;
+unsigned char *out;
+int *outl;
+unsigned char *in;
+int inl;
+	{
+	EVP_EncryptUpdate(ctx,out,outl,in,inl);
+	}
+*/
+
+int EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
+	{
+	int i;
+	i = EVP_EncryptFinal_ex(ctx,out,outl);
+	EVP_EncryptInit_ex(ctx,NULL,NULL,NULL,NULL);
+	return i;
+	}
-- 
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