Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/modes/cbc128.c

-/* ====================================================================
- * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
- *
- * 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 above 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 acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- *
- */
-
-#include <openssl/crypto.h>
-#include "modes_lcl.h"
-#include <string.h>
-
-#ifndef MODES_DEBUG
-# ifndef NDEBUG
-#  define NDEBUG
-# endif
-#endif
-#include <assert.h>
-
-#ifndef STRICT_ALIGNMENT
-#  define STRICT_ALIGNMENT 0
-#endif
-
-void CRYPTO_cbc128_encrypt(const unsigned char *in, unsigned char *out,
-                        size_t len, const void *key,
-                        unsigned char ivec[16], block128_f block)
-{
-        size_t n;
-        const unsigned char *iv = ivec;
-
-        assert(in && out && key && ivec);
-
-#if !defined(OPENSSL_SMALL_FOOTPRINT)
-        if (STRICT_ALIGNMENT &&
-            ((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) {
-                while (len>=16) {
-                        for(n=0; n<16; ++n)
-                                out[n] = in[n] ^ iv[n];
-                        (*block)(out, out, key);
-                        iv = out;
-                        len -= 16;
-                        in  += 16;
-                        out += 16;
-                }
-        } else {
-                while (len>=16) {
-                        for(n=0; n<16; n+=sizeof(size_t))
-                                *(size_t*)(out+n) =
-                                *(size_t*)(in+n) ^ *(size_t*)(iv+n);
-                        (*block)(out, out, key);
-                        iv = out;
-                        len -= 16;
-                        in  += 16;
-                        out += 16;
-                }
-        }
-#endif
-        while (len) {
-                for(n=0; n<16 && n<len; ++n)
-                        out[n] = in[n] ^ iv[n];
-                for(; n<16; ++n)
-                        out[n] = iv[n];
-                (*block)(out, out, key);
-                iv = out;
-                if (len<=16) break;
-                len -= 16;
-                in  += 16;
-                out += 16;
-        }
-        memcpy(ivec,iv,16);
-}
-
-void CRYPTO_cbc128_decrypt(const unsigned char *in, unsigned char *out,
-                        size_t len, const void *key,
-                        unsigned char ivec[16], block128_f block)
-{
-        size_t n;
-        union { size_t align; unsigned char c[16]; } tmp;
-
-        assert(in && out && key && ivec);
-
-#if !defined(OPENSSL_SMALL_FOOTPRINT)
-        if (in != out) {
-                const unsigned char *iv = ivec;
-
-                if (STRICT_ALIGNMENT &&
-                    ((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) {
-                        while (len>=16) {
-                                (*block)(in, out, key);
-                                for(n=0; n<16; ++n)
-                                        out[n] ^= iv[n];
-                                iv = in;
-                                len -= 16;
-                                in  += 16;
-                                out += 16;
-                        }
-                }
-                else {
-                        while (len>=16) {
-                                (*block)(in, out, key);
-                                for(n=0; n<16; n+=sizeof(size_t))
-                                        *(size_t *)(out+n) ^= *(size_t *)(iv+n);
-                                iv = in;
-                                len -= 16;
-                                in  += 16;
-                                out += 16;
-                        }
-                }
-                memcpy(ivec,iv,16);
-        } else {
-                if (STRICT_ALIGNMENT &&
-                    ((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) {
-                        unsigned char c;
-                        while (len>=16) {
-                                (*block)(in, tmp.c, key);
-                                for(n=0; n<16; ++n) {
-                                        c = in[n];
-                                        out[n] = tmp.c[n] ^ ivec[n];
-                                        ivec[n] = c;
-                                }
-                                len -= 16;
-                                in  += 16;
-                                out += 16;
-                        }
-                }
-                else {
-                        size_t c;
-                        while (len>=16) {
-                                (*block)(in, tmp.c, key);
-                                for(n=0; n<16; n+=sizeof(size_t)) {
-                                        c = *(size_t *)(in+n);
-                                        *(size_t *)(out+n) =
-                                        *(size_t *)(tmp.c+n) ^ *(size_t *)(ivec+n);
-                                        *(size_t *)(ivec+n) = c;
-                                }
-                                len -= 16;
-                                in  += 16;
-                                out += 16;
-                        }
-                }
-        }
-#endif
-        while (len) {
-                unsigned char c;
-                (*block)(in, tmp.c, key);
-                for(n=0; n<16 && n<len; ++n) {
-                        c = in[n];
-                        out[n] = tmp.c[n] ^ ivec[n];
-                        ivec[n] = c;
-                }
-                if (len<=16) {
-                        for (; n<16; ++n)
-                                ivec[n] = in[n];
-                        break;
-                }
-                len -= 16;
-                in  += 16;
-                out += 16;
-        }
-}