+++ /dev/null
-/* crypto/pem/pem_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 <openssl/opensslconf.h> /* for OPENSSL_NO_RSA */
-#ifndef OPENSSL_NO_RSA
-#include <stdio.h>
-#include "cryptlib.h"
-#include <openssl/evp.h>
-#include <openssl/rand.h>
-#include <openssl/objects.h>
-#include <openssl/x509.h>
-#include <openssl/pem.h>
-#include <openssl/rsa.h>
-
-int PEM_SealInit(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 *)OPENSSL_malloc(max*2);
- if (s == NULL)
- {
- PEMerr(PEM_F_PEM_SEALINIT,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- EVP_EncodeInit(&ctx->encode);
-
- EVP_MD_CTX_init(&ctx->md);
- if (!EVP_SignInit(&ctx->md,md_type))
- goto err;
-
- EVP_CIPHER_CTX_init(&ctx->cipher);
- ret=EVP_SealInit(&ctx->cipher,type,ek,ekl,iv,pubk,npubk);
- if (ret <= 0) 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) OPENSSL_free(s);
- OPENSSL_cleanse(key,EVP_MAX_KEY_LENGTH);
- return(ret);
- }
-
-void PEM_SealUpdate(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(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 *)OPENSSL_malloc(i*2);
- if (s == NULL)
- {
- PEMerr(PEM_F_PEM_SEALFINAL,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- if (!EVP_EncryptFinal_ex(&ctx->cipher,s,(int *)&i))
- goto err;
- 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:
- EVP_MD_CTX_cleanup(&ctx->md);
- EVP_CIPHER_CTX_cleanup(&ctx->cipher);
- if (s != NULL) OPENSSL_free(s);
- return(ret);
- }
-#else /* !OPENSSL_NO_RSA */
-
-# if PEDANTIC
-static void *dummy=&dummy;
-# endif
-
-#endif
projects / cassiopeia.git / blobdiff