[ILASM] Add wrappers for platform-specific SHA-256 implementations (d…

…otnet#109559)

src/coreclr/ilasm/CMakeLists.txt

@@ -34,8 +34,18 @@ set(ILASM_HEADERS
   nvpair.h
   typar.hpp
   portable_pdb.h
+  sha256.h
 )
 
+if(CLR_CMAKE_TARGET_UNIX AND NOT CLR_CMAKE_TARGET_APPLE)
+  configure_file(
+    ../../native/libs/System.Security.Cryptography.Native/pal_crypto_config.h.in
+    ${CMAKE_CURRENT_BINARY_DIR}/pal_crypto_config.h)
+  include_directories(../../native/libs/Common)
+  include_directories(../../native/libs/System.Security.Cryptography.Native)
+  include_directories(${CMAKE_CURRENT_BINARY_DIR})
+endif(CLR_CMAKE_TARGET_UNIX AND NOT CLR_CMAKE_TARGET_APPLE)
+
 if(CLR_CMAKE_TARGET_WIN32)
   list(APPEND ILASM_SOURCES ${ILASM_HEADERS})
 
@@ -107,6 +117,16 @@ else()
     )
 endif(CLR_CMAKE_TARGET_WIN32)
 
+if(CLR_CMAKE_TARGET_UNIX AND NOT CLR_CMAKE_TARGET_APPLE)
+  list(APPEND ILASM_LINK_LIBRARIES System.Security.Cryptography.Native.OpenSsl-Static)
+  if(NOT FEATURE_DISTRO_AGNOSTIC_SSL)
+    find_package(OpenSSL QUIET)
+    if(OPENSSL_FOUND)
+      list(APPEND ILASM_LINK_LIBRARIES OpenSSL::SSL OpenSSL::Crypto)
+    endif(OPENSSL_FOUND)
+  endif(NOT FEATURE_DISTRO_AGNOSTIC_SSL)
+endif(CLR_CMAKE_TARGET_UNIX AND NOT CLR_CMAKE_TARGET_APPLE)
+
 
 if(CLR_CMAKE_HOST_UNIX)
   target_link_libraries(ilasm

src/coreclr/ilasm/sha256.h

@@ -0,0 +1,104 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+//*****************************************************************************
+// sha256.h
+//
+
+//
+// contains implementation of sha256 hash algorithm
+//
+//*****************************************************************************
+#ifndef HAVE_SHA256_H
+#define HAVE_SHA256_H
+
+#ifdef _WIN32
+inline HRESULT Sha256Hash(BYTE* pSrc, DWORD srcSize, BYTE* pDst, DWORD dstSize)
+{
+    if (dstSize != 32)
+    {
+        return E_FAIL;
+    }
+
+    BCRYPT_ALG_HANDLE  algHandle  = NULL;
+    BCRYPT_HASH_HANDLE hashHandle = NULL;
+
+    NTSTATUS status = BCryptOpenAlgorithmProvider(&algHandle, BCRYPT_SHA256_ALGORITHM, NULL, 0);
+
+    if (!NT_SUCCESS(status))
+    {
+        goto cleanup;
+    }
+
+    status = BCryptCreateHash(algHandle, &hashHandle, NULL, 0, NULL, 0, 0);
+
+    if (!NT_SUCCESS(status))
+    {
+        goto cleanup;
+    }
+
+    status = BCryptHashData(hashHandle, pSrc, srcSize, 0);
+
+    if (!NT_SUCCESS(status))
+    {
+        goto cleanup;
+    }
+
+    status = BCryptFinishHash(hashHandle, pDst, dstSize, 0);
+
+cleanup:
+    if (hashHandle != NULL)
+    {
+         BCryptDestroyHash(hashHandle);
+    }
+
+    if (algHandle != NULL)
+    {
+        BCryptCloseAlgorithmProvider(algHandle, 0);
+    }
+
+    return status;
+}
+#elif defined(__APPLE__)
+#include <CommonCrypto/CommonCrypto.h>
+#include <CommonCrypto/CommonDigest.h>
+
+inline HRESULT Sha256Hash(BYTE* pSrc, DWORD srcSize, BYTE* pDst, DWORD dstSize)
+{
+    if (dstSize != CC_SHA256_DIGEST_LENGTH)
+    {
+        return E_FAIL;
+    }
+
+    CC_SHA256(pSrc, (CC_LONG)srcSize, pDst);
+    return S_OK;
+}
+#else
+extern "C" {
+    #include "openssl.h"
+    #include "pal_evp.h"
+}
+
+inline bool IsOpenSslAvailable()
+{
+    return CryptoNative_OpenSslAvailable() != 0;
+}
+
+inline HRESULT Sha256Hash(BYTE* pSrc, DWORD srcSize, BYTE* pDst, DWORD dstSize)
+{
+    if (CryptoNative_EnsureOpenSslInitialized() || (dstSize != 32))
+    {
+        return E_FAIL;
+    }
+
+    uint32_t hashLength = 0;
+
+    if (!CryptoNative_EvpDigestOneShot(CryptoNative_EvpSha256(), pSrc, srcSize, pDst, &hashLength))
+    {
+        return E_FAIL;
+    }
+
+    return S_OK;
+}
+#endif
+
+#endif // HAVE_SHA256_H