Add digest.h and protocol digest classes

src/ripple/protocol/impl/digest.cpp

@@ -0,0 +1,86 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include <BeastConfig.h>
+#include <ripple/protocol/digest.h>
+#include <beast/cxx14/type_traits.h> // <type_traits.h>
+#include <openssl/ripemd.h>
+#include <openssl/sha.h>
+
+namespace ripple {
+
+static_assert(sizeof(decltype(
+    openssl_ripemd160_hasher::ctx_)) ==
+        sizeof(RIPEMD160_CTX), "");
+
+openssl_ripemd160_hasher::openssl_ripemd160_hasher()
+{
+    auto const ctx = reinterpret_cast<
+        RIPEMD160_CTX*>(ctx_);
+    RIPEMD160_Init(ctx);
+}
+
+void
+openssl_ripemd160_hasher::operator()(void const* data,
+    std::size_t size) noexcept
+{
+    auto const ctx = reinterpret_cast<
+        RIPEMD160_CTX*>(ctx_);
+    RIPEMD160_Update(ctx, data, size);
+}
+
+openssl_ripemd160_hasher::operator result_type() noexcept
+{
+    auto const ctx = reinterpret_cast<
+        RIPEMD160_CTX*>(ctx_);
+    result_type digest;
+    RIPEMD160_Final(digest.data(), ctx);
+    return digest;
+}
+
+static_assert(sizeof(decltype(
+    openssl_sha256_hasher::ctx_)) ==
+        sizeof(SHA256_CTX), "");
+
+openssl_sha256_hasher::openssl_sha256_hasher()
+{
+    auto const ctx = reinterpret_cast<
+        SHA256_CTX*>(ctx_);
+    SHA256_Init(ctx);
+}
+
+void
+openssl_sha256_hasher::operator()(void const* data,
+    std::size_t size) noexcept
+{
+    auto const ctx = reinterpret_cast<
+        SHA256_CTX*>(ctx_);
+    SHA256_Update(ctx, data, size);
+}
+
+openssl_sha256_hasher::operator result_type() noexcept
+{
+    auto const ctx = reinterpret_cast<
+        SHA256_CTX*>(ctx_);
+    result_type digest;
+    SHA256_Final(digest.data(), ctx);
+    return digest;
+}
+
+} // ripple