1 files changed, 53 insertions, 0 deletions
diff --git a/lib/crypto/c_src/digest.h b/lib/crypto/c_src/digest.h
new file mode 100644
index 0000000000..b1f8128a1f
--- /dev/null
+++ b/lib/crypto/c_src/digest.h
@@ -0,0 +1,53 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef E_DIGEST_H__
+#define E_DIGEST_H__ 1
+
+#include "common.h"
+
+struct digest_type_t {
+    union {
+	const char*  str;        /* before init, NULL for end-of-table */
+	ERL_NIF_TERM atom;       /* after init, 'false' for end-of-table */
+    }type;
+    unsigned flags;
+    union {
+	const EVP_MD* (*funcp)(void);  /* before init, NULL if notsup */
+	const EVP_MD* p;               /* after init, NULL if notsup */
+    }md;
+};
+
+/* masks in the flags field if digest_type_t */
+#define NO_FIPS_DIGEST 1
+
+#ifdef FIPS_SUPPORT
+/* May have FIPS support, must check dynamically if it is enabled */
+# define DIGEST_FORBIDDEN_IN_FIPS(P) (((P)->flags & NO_FIPS_DIGEST) && FIPS_mode())
+#else
+/* No FIPS support since the symbol FIPS_SUPPORT is undefined */
+# define DIGEST_FORBIDDEN_IN_FIPS(P) 0
+#endif
+
+
+void init_digest_types(ErlNifEnv* env);
+struct digest_type_t* get_digest_type(ERL_NIF_TERM type);
+
+#endif /* E_DIGEST_H__ */