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1 files changed, 129 insertions, 0 deletions

diff --git a/src/lib/libcrypto/seed/seed_cbc.c b/src/lib/libcrypto/seed/seed_cbc.c
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+++ b/src/lib/libcrypto/seed/seed_cbc.c
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+/* crypto/seed/seed_cbc.c -*- mode:C; c-file-style: "eay" -*- */
+/* ====================================================================
+ * Copyright (c) 1998-2007 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 "seed_locl.h"
+#include <string.h>
+
+void SEED_cbc_encrypt(const unsigned char *in, unsigned char *out,
+                      size_t len, const SEED_KEY_SCHEDULE *ks,
+                      unsigned char ivec[SEED_BLOCK_SIZE], int enc)
+        {
+        size_t n;
+        unsigned char tmp[SEED_BLOCK_SIZE];
+        const unsigned char *iv = ivec;
+
+        if (enc)
+                {
+                while (len >= SEED_BLOCK_SIZE)
+                        {
+                        for (n = 0; n < SEED_BLOCK_SIZE; ++n)
+                                out[n] = in[n] ^ iv[n];
+                        SEED_encrypt(out, out, ks);
+                        iv = out;
+                        len -= SEED_BLOCK_SIZE;
+                        in  += SEED_BLOCK_SIZE;
+                        out += SEED_BLOCK_SIZE;
+                        }
+                if (len)
+                        {
+                        for (n = 0; n < len; ++n)
+                                out[n] = in[n] ^ iv[n];
+                        for (n = len; n < SEED_BLOCK_SIZE; ++n)
+                                out[n] = iv[n];
+                        SEED_encrypt(out, out, ks);
+                        iv = out;
+                        }
+                memcpy(ivec, iv, SEED_BLOCK_SIZE);
+                }
+        else if (in != out) /* decrypt */
+                {
+                while (len >= SEED_BLOCK_SIZE)
+                        {
+                        SEED_decrypt(in, out, ks);
+                        for (n = 0; n < SEED_BLOCK_SIZE; ++n)
+                                out[n] ^= iv[n];
+                        iv = in;
+                        len -= SEED_BLOCK_SIZE;
+                        in  += SEED_BLOCK_SIZE;
+                        out += SEED_BLOCK_SIZE;
+                        }
+                if (len)
+                        {
+                        SEED_decrypt(in, tmp, ks);
+                        for (n = 0; n < len; ++n)
+                                out[n] = tmp[n] ^ iv[n];
+                        iv = in;
+                        }
+                memcpy(ivec, iv, SEED_BLOCK_SIZE);
+                }
+        else /* decrypt, overlap */
+                {
+                while (len >= SEED_BLOCK_SIZE)
+                        {
+                        memcpy(tmp, in, SEED_BLOCK_SIZE);
+                        SEED_decrypt(in, out, ks);
+                        for (n = 0; n < SEED_BLOCK_SIZE; ++n)
+                                out[n] ^= ivec[n];
+                        memcpy(ivec, tmp, SEED_BLOCK_SIZE);
+                        len -= SEED_BLOCK_SIZE;
+                        in  += SEED_BLOCK_SIZE;
+                        out += SEED_BLOCK_SIZE;
+                        }
+                if (len)
+                        {
+                        memcpy(tmp, in, SEED_BLOCK_SIZE);
+                        SEED_decrypt(tmp, tmp, ks);
+                        for (n = 0; n < len; ++n)
+                                out[n] = tmp[n] ^ ivec[n];
+                        memcpy(ivec, tmp, SEED_BLOCK_SIZE);
+                        }
+                }
+        }