1 files changed, 60 insertions, 0 deletions
diff --git a/crypto/openssl/providers/implementations/ciphers/cipher_aes_xts.h b/crypto/openssl/providers/implementations/ciphers/cipher_aes_xts.h
new file mode 100644
index 000000000000..56891ca98c42
--- /dev/null
+++ b/crypto/openssl/providers/implementations/ciphers/cipher_aes_xts.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2019-2021 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
+ */
+
+#include <openssl/aes.h>
+#include "prov/ciphercommon.h"
+#include "crypto/aes_platform.h"
+
+/*
+ * Available in cipher_fips.c, and compiled with different values depending
+ * on we're in the FIPS module or not.
+ */
+extern const int ossl_aes_xts_allow_insecure_decrypt;
+
+PROV_CIPHER_FUNC(void, xts_stream,
+                 (const unsigned char *in, unsigned char *out, size_t len,
+                  const AES_KEY *key1, const AES_KEY *key2,
+                  const unsigned char iv[16]));
+
+#if defined(OPENSSL_CPUID_OBJ) && defined(__s390__)
+typedef struct S390X_km_xts_params_st {
+    unsigned char key[64];
+    unsigned char tweak[16];
+    unsigned char nap[16];
+} S390X_KM_XTS_PARAMS;
+#endif
+
+typedef struct prov_aes_xts_ctx_st {
+    PROV_CIPHER_CTX base;      /* Must be first */
+    union {
+        OSSL_UNION_ALIGN;
+        AES_KEY ks;
+    } ks1, ks2;                /* AES key schedules to use */
+    XTS128_CONTEXT xts;
+    OSSL_xts_stream_fn stream;
+
+    /* Platform specific data */
+    union {
+        int dummy;
+#if defined(OPENSSL_CPUID_OBJ) && defined(__s390__)
+        struct {
+            union {
+                OSSL_UNION_ALIGN;
+                S390X_KM_XTS_PARAMS km;
+            } param;
+            size_t offset;
+            unsigned int fc;
+            unsigned int iv_set : 1;
+            unsigned int key_set : 1;
+        } s390x;
+#endif
+    } plat;
+} PROV_AES_XTS_CTX;
+
+const PROV_CIPHER_HW *ossl_prov_cipher_hw_aes_xts(size_t keybits);