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+/* crypto/evp/e_idea.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.]
+ */
+
+#ifndef NO_IDEA
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+#include "evp_locl.h"
+
+static int idea_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
+ unsigned char *iv,int enc);
+
+/* NB idea_ecb_encrypt doesn't take an 'encrypt' argument so we treat it as a special
+ * case
+ */
+
+static int idea_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, unsigned char *in, unsigned int inl)
+{
+ BLOCK_CIPHER_ecb_loop()
+ idea_ecb_encrypt(in + i, out + i, &ctx->c.idea_ks);
+ return 1;
+}
+
+/* Can't use IMPLEMENT_BLOCK_CIPHER because idea_ecb_encrypt is different */
+
+BLOCK_CIPHER_func_cbc(idea, idea, idea_ks)
+BLOCK_CIPHER_func_ofb(idea, idea, idea_ks)
+BLOCK_CIPHER_func_cfb(idea, idea, idea_ks)
+
+BLOCK_CIPHER_defs(idea, idea_ks, NID_idea, 8, 16, 8,
+ 0, idea_init_key, NULL,
+ EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL)
+
+static int idea_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
+ unsigned char *iv, int enc)
+ {
+ if(!enc) {
+ if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE) enc = 1;
+ else if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE) enc = 1;
+ }
+ if (enc) idea_set_encrypt_key(key,&(ctx->c.idea_ks));
+ else
+ {
+ IDEA_KEY_SCHEDULE tmp;
+
+ idea_set_encrypt_key(key,&tmp);
+ idea_set_decrypt_key(&tmp,&(ctx->c.idea_ks));
+ memset((unsigned char *)&tmp,0,
+ sizeof(IDEA_KEY_SCHEDULE));
+ }
+ return 1;
+ }
+
+#endif