Import of old SSLeay release: SSLeay 0.8.1b

1 files changed, 191 insertions, 0 deletions

diff --git a/crypto/pem/pem_seal.c b/crypto/pem/pem_seal.c
new file mode 100644
index 0000000000..6acb04ad77
--- /dev/null
+++ b/crypto/pem/pem_seal.c
@@ -0,0 +1,191 @@
+/* crypto/pem/pem_seal.c */
+/* Copyright (C) 1995-1997 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 "evp.h"
+#include "rand.h"
+#include "objects.h"
+#include "x509.h"
+#include "pem.h"
+
+int PEM_SealInit(ctx,type,md_type,ek,ekl,iv,pubk,npubk)
+PEM_ENCODE_SEAL_CTX *ctx;
+EVP_CIPHER *type;
+EVP_MD *md_type;
+unsigned char **ek;
+int *ekl;
+unsigned char *iv;
+EVP_PKEY **pubk;
+int npubk;
+	{
+	unsigned char key[EVP_MAX_KEY_LENGTH];
+	int ret= -1;
+	int i,j,max=0;
+	char *s=NULL;
+
+	for (i=0; i<npubk; i++)
+		{
+		if (pubk[i]->type != EVP_PKEY_RSA)
+			{
+			PEMerr(PEM_F_PEM_SEALINIT,PEM_R_PUBLIC_KEY_NO_RSA);
+			goto err;
+			}
+		j=RSA_size(pubk[i]->pkey.rsa);
+		if (j > max) max=j;
+		}
+	s=(char *)Malloc(max*2);
+	if (s == NULL)
+		{
+		PEMerr(PEM_F_PEM_SEALINIT,ERR_R_MALLOC_FAILURE);
+		goto err;
+		}
+
+	EVP_EncodeInit(&(ctx->encode));
+	EVP_SignInit(&(ctx->md),md_type);
+
+	ret=EVP_SealInit(&(ctx->cipher),type,ek,ekl,iv,pubk,npubk);
+	if (!ret) goto err;
+
+	/* base64 encode the keys */
+	for (i=0; i<npubk; i++)
+		{
+		j=EVP_EncodeBlock((unsigned char *)s,ek[i],
+			RSA_size(pubk[i]->pkey.rsa));
+		ekl[i]=j;
+		memcpy(ek[i],s,j+1);
+		}
+
+	ret=npubk;
+err:
+	if (s != NULL) Free(s);
+	memset(key,0,EVP_MAX_KEY_LENGTH);
+	return(ret);
+	}
+
+void PEM_SealUpdate(ctx,out,outl,in,inl)
+PEM_ENCODE_SEAL_CTX *ctx;
+unsigned char *out;
+int *outl;
+unsigned char *in;
+int inl;
+	{
+	unsigned char buffer[1600];
+	int i,j;
+
+	*outl=0;
+	EVP_SignUpdate(&(ctx->md),in,inl);
+	for (;;)
+		{
+		if (inl <= 0) break;
+		if (inl > 1200)
+			i=1200;
+		else
+			i=inl;
+		EVP_EncryptUpdate(&(ctx->cipher),buffer,&j,in,i);
+		EVP_EncodeUpdate(&(ctx->encode),out,&j,buffer,j);
+		*outl+=j;
+		out+=j;
+		in+=i;
+		inl-=i;
+		}
+	}
+
+int PEM_SealFinal(ctx,sig,sigl,out,outl,priv)
+PEM_ENCODE_SEAL_CTX *ctx;
+unsigned char *sig;
+int *sigl;
+unsigned char *out;
+int *outl;
+EVP_PKEY *priv;
+	{
+	unsigned char *s=NULL;
+	int ret=0,j;
+	unsigned int i;
+
+	if (priv->type != EVP_PKEY_RSA)
+		{
+		PEMerr(PEM_F_PEM_SEALFINAL,PEM_R_PUBLIC_KEY_NO_RSA);
+		goto err;
+		}
+	i=RSA_size(priv->pkey.rsa);
+	if (i < 100) i=100;
+	s=(unsigned char *)Malloc(i*2);
+	if (s == NULL)
+		{
+		PEMerr(PEM_F_PEM_SEALFINAL,ERR_R_MALLOC_FAILURE);
+		goto err;
+		}
+
+	EVP_EncryptFinal(&(ctx->cipher),s,(int *)&i);
+	EVP_EncodeUpdate(&(ctx->encode),out,&j,s,i);
+	*outl=j;
+	out+=j;
+	EVP_EncodeFinal(&(ctx->encode),out,&j);
+	*outl+=j;
+
+	if (!EVP_SignFinal(&(ctx->md),s,&i,priv)) goto err;
+	*sigl=EVP_EncodeBlock(sig,s,i);
+
+	ret=1;
+err:
+	memset((char *)&(ctx->md),0,sizeof(ctx->md));
+	memset((char *)&(ctx->cipher),0,sizeof(ctx->cipher));
+	if (s != NULL) Free(s);
+	return(ret);
+	}