initial import

tools/sdk/include/esp32/rom/sha.h

@@ -0,0 +1,58 @@
+/*
+  ROM functions for hardware SHA support.
+
+  It is not recommended to use these functions directly,
+  use the wrapper functions in hwcrypto/sha.h instead.
+
+ */
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// 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.
+#ifndef _ROM_SHA_H_
+#define _ROM_SHA_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct SHAContext {
+    bool start;
+    uint32_t total_input_bits[4];
+} SHA_CTX;
+
+enum SHA_TYPE {
+    SHA1 = 0,
+    SHA2_256,
+    SHA2_384,
+    SHA2_512,
+    SHA_INVALID = -1,
+};
+
+void ets_sha_init(SHA_CTX *ctx);
+
+void ets_sha_enable(void);
+
+void ets_sha_disable(void);
+
+void ets_sha_update(SHA_CTX *ctx, enum SHA_TYPE type, const uint8_t *input, size_t input_bits);
+
+void ets_sha_finish(SHA_CTX *ctx, enum SHA_TYPE type, uint8_t *output);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ROM_SHA_H_ */