1 files changed, 80 insertions, 0 deletions
diff --git a/providers/implementations/ciphers/cipher_desx_hw.c b/providers/implementations/ciphers/cipher_desx_hw.c
new file mode 100644
index 000000000000..7dc4c50ef55a
--- /dev/null
+++ b/providers/implementations/ciphers/cipher_desx_hw.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (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
+ */
+
+/*
+ * DES low level APIs are deprecated for public use, but still ok for internal
+ * use.
+ */
+#include "internal/deprecated.h"
+
+#include <openssl/des.h>
+#include "cipher_tdes_default.h"
+
+/*
+ * Note the PROV_TDES_CTX has been used for the DESX cipher, just to reduce
+ * code size.
+ */
+#define ks1 tks.ks[0]
+#define ks2 tks.ks[1].ks[0].cblock
+#define ks3 tks.ks[2].ks[0].cblock
+
+static int cipher_hw_desx_cbc_initkey(PROV_CIPHER_CTX *ctx,
+                                      const unsigned char *key, size_t keylen)
+{
+    PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
+    DES_cblock *deskey = (DES_cblock *)key;
+
+    DES_set_key_unchecked(deskey, &tctx->ks1);
+    memcpy(&tctx->ks2, &key[8], 8);
+    memcpy(&tctx->ks3, &key[16], 8);
+
+    return 1;
+}
+
+static void cipher_hw_desx_copyctx(PROV_CIPHER_CTX *dst,
+                                   const PROV_CIPHER_CTX *src)
+{
+    PROV_TDES_CTX *sctx = (PROV_TDES_CTX *)src;
+    PROV_TDES_CTX *dctx = (PROV_TDES_CTX *)dst;
+
+    *dctx = *sctx;
+    dst->ks = &dctx->tks.ks;
+}
+
+static int cipher_hw_desx_cbc(PROV_CIPHER_CTX *ctx, unsigned char *out,
+                              const unsigned char *in, size_t inl)
+{
+    PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
+
+    while (inl >= MAXCHUNK) {
+        DES_xcbc_encrypt(in, out, (long)MAXCHUNK, &tctx->ks1,
+                         (DES_cblock *)ctx->iv, &tctx->ks2, &tctx->ks3,
+                         ctx->enc);
+        inl -= MAXCHUNK;
+        in += MAXCHUNK;
+        out += MAXCHUNK;
+    }
+    if (inl > 0)
+        DES_xcbc_encrypt(in, out, (long)inl, &tctx->ks1,
+                         (DES_cblock *)ctx->iv, &tctx->ks2, &tctx->ks3,
+                         ctx->enc);
+    return 1;
+}
+
+static const PROV_CIPHER_HW desx_cbc =
+{
+    cipher_hw_desx_cbc_initkey,
+    cipher_hw_desx_cbc,
+    cipher_hw_desx_copyctx
+};
+
+const PROV_CIPHER_HW *ossl_prov_cipher_hw_tdes_desx_cbc(void)
+{
+    return &desx_cbc;
+}