From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Fri, 30 Apr 2021 00:33:56 +0200
Subject: initial/final commit

---
 openssl-1.1.0h/crypto/evp/e_xcbc_d.c | 83 ++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 openssl-1.1.0h/crypto/evp/e_xcbc_d.c

(limited to 'openssl-1.1.0h/crypto/evp/e_xcbc_d.c')

diff --git a/openssl-1.1.0h/crypto/evp/e_xcbc_d.c b/openssl-1.1.0h/crypto/evp/e_xcbc_d.c
new file mode 100644
index 0000000..effaf5c
--- /dev/null
+++ b/openssl-1.1.0h/crypto/evp/e_xcbc_d.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include "internal/cryptlib.h"
+
+#ifndef OPENSSL_NO_DES
+
+# include <openssl/evp.h>
+# include <openssl/objects.h>
+# include "internal/evp_int.h"
+# include <openssl/des.h>
+
+static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+                             const unsigned char *iv, int enc);
+static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+                           const unsigned char *in, size_t inl);
+
+typedef struct {
+    DES_key_schedule ks;        /* key schedule */
+    DES_cblock inw;
+    DES_cblock outw;
+} DESX_CBC_KEY;
+
+# define data(ctx) EVP_C_DATA(DESX_CBC_KEY,ctx)
+
+static const EVP_CIPHER d_xcbc_cipher = {
+    NID_desx_cbc,
+    8, 24, 8,
+    EVP_CIPH_CBC_MODE,
+    desx_cbc_init_key,
+    desx_cbc_cipher,
+    NULL,
+    sizeof(DESX_CBC_KEY),
+    EVP_CIPHER_set_asn1_iv,
+    EVP_CIPHER_get_asn1_iv,
+    NULL,
+    NULL
+};
+
+const EVP_CIPHER *EVP_desx_cbc(void)
+{
+    return (&d_xcbc_cipher);
+}
+
+static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+                             const unsigned char *iv, int enc)
+{
+    DES_cblock *deskey = (DES_cblock *)key;
+
+    DES_set_key_unchecked(deskey, &data(ctx)->ks);
+    memcpy(&data(ctx)->inw[0], &key[8], 8);
+    memcpy(&data(ctx)->outw[0], &key[16], 8);
+
+    return 1;
+}
+
+static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+                           const unsigned char *in, size_t inl)
+{
+    while (inl >= EVP_MAXCHUNK) {
+        DES_xcbc_encrypt(in, out, (long)EVP_MAXCHUNK, &data(ctx)->ks,
+                         (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                         &data(ctx)->inw, &data(ctx)->outw,
+                         EVP_CIPHER_CTX_encrypting(ctx));
+        inl -= EVP_MAXCHUNK;
+        in += EVP_MAXCHUNK;
+        out += EVP_MAXCHUNK;
+    }
+    if (inl)
+        DES_xcbc_encrypt(in, out, (long)inl, &data(ctx)->ks,
+                         (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+                         &data(ctx)->inw, &data(ctx)->outw,
+                         EVP_CIPHER_CTX_encrypting(ctx));
+    return 1;
+}
+#endif
-- 
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