1 files changed, 54 insertions, 0 deletions
diff --git a/NorthstarDLL/include/internal/sha3.h b/NorthstarDLL/include/internal/sha3.h
new file mode 100644
index 00000000..80ad86e5
--- /dev/null
+++ b/NorthstarDLL/include/internal/sha3.h
@@ -0,0 +1,54 @@
+/*
+ * 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
+ */
+
+/* This header can move into provider when legacy support is removed */
+#ifndef OSSL_INTERNAL_SHA3_H
+# define OSSL_INTERNAL_SHA3_H
+# pragma once
+
+# include <openssl/e_os2.h>
+# include <stddef.h>
+
+# define KECCAK1600_WIDTH 1600
+# define SHA3_MDSIZE(bitlen)    (bitlen / 8)
+# define KMAC_MDSIZE(bitlen)    2 * (bitlen / 8)
+# define SHA3_BLOCKSIZE(bitlen) (KECCAK1600_WIDTH - bitlen * 2) / 8
+
+typedef struct keccak_st KECCAK1600_CTX;
+
+typedef size_t (sha3_absorb_fn)(void *vctx, const void *inp, size_t len);
+typedef int (sha3_final_fn)(unsigned char *md, void *vctx);
+
+typedef struct prov_sha3_meth_st
+{
+    sha3_absorb_fn *absorb;
+    sha3_final_fn *final;
+} PROV_SHA3_METHOD;
+
+struct keccak_st {
+    uint64_t A[5][5];
+    size_t block_size;          /* cached ctx->digest->block_size */
+    size_t md_size;             /* output length, variable in XOF */
+    size_t bufsz;               /* used bytes in below buffer */
+    unsigned char buf[KECCAK1600_WIDTH / 8 - 32];
+    unsigned char pad;
+    PROV_SHA3_METHOD meth;
+};
+
+void ossl_sha3_reset(KECCAK1600_CTX *ctx);
+int ossl_sha3_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen);
+int ossl_keccak_kmac_init(KECCAK1600_CTX *ctx, unsigned char pad,
+                          size_t bitlen);
+int ossl_sha3_update(KECCAK1600_CTX *ctx, const void *_inp, size_t len);
+int ossl_sha3_final(unsigned char *md, KECCAK1600_CTX *ctx);
+
+size_t SHA3_absorb(uint64_t A[5][5], const unsigned char *inp, size_t len,
+                   size_t r);
+
+#endif /* OSSL_INTERNAL_SHA3_H */