crypto: reduce crypto.h header weight

src/crypto/hash.cpp

@@ -0,0 +1,80 @@
+// Copyright (c) 2026, The Monero Project
+//
+// All rights reserved.
+//
+// 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 above 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. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.
+
+#include "hash-ops.h"
+#include "hash.h"
+
+#include <cstddef>
+#include <iostream>
+#include <stdexcept>
+
+#include "hex.h"
+
+namespace crypto
+{
+//------------------------------------------------------------------------------
+void cn_fast_hash(const void *data, std::size_t length, hash &hash) {
+    cn_fast_hash(data, length, reinterpret_cast<char *>(&hash));
+}
+//------------------------------------------------------------------------------
+hash cn_fast_hash(const void *data, std::size_t length) {
+    hash h;
+    cn_fast_hash(data, length, reinterpret_cast<char *>(&h));
+    return h;
+}
+//------------------------------------------------------------------------------
+void cn_variant1_check(const std::size_t length, const int variant)
+{
+    // see VARIANT1_CHECK in slow-hash.c
+    if (variant == 1 && length < 43)
+        throw std::logic_error("Cryptonight variant 1 is undefined for inputs of less than 43 bytes");
+}
+//------------------------------------------------------------------------------
+void cn_slow_hash(const void *data, std::size_t length, hash &hash, int variant, uint64_t height) {
+    cn_variant1_check(length, variant);
+    cn_slow_hash(data, length, reinterpret_cast<char *>(&hash), variant, 0/*prehashed*/, height);
+}
+//------------------------------------------------------------------------------
+void cn_slow_hash_prehashed(const void *data, std::size_t length, hash &hash, int variant, uint64_t height) {
+    cn_variant1_check(length, variant);
+    cn_slow_hash(data, length, reinterpret_cast<char *>(&hash), variant, 1/*prehashed*/, height);
+}
+//------------------------------------------------------------------------------
+void tree_hash(const hash *hashes, std::size_t count, hash &root_hash) {
+    tree_hash(reinterpret_cast<const char (*)[HASH_SIZE]>(hashes), count, reinterpret_cast<char *>(&root_hash));
+}
+//------------------------------------------------------------------------------
+std::ostream &operator <<(std::ostream &o, const crypto::hash &v) {
+    epee::to_hex::formatted(o, epee::as_byte_span(v)); return o;
+}
+//------------------------------------------------------------------------------
+std::ostream &operator <<(std::ostream &o, const crypto::hash8 &v) {
+    epee::to_hex::formatted(o, epee::as_byte_span(v)); return o;
+}
+//------------------------------------------------------------------------------
+} //namespace crypto