add module license

lib/ESPAsyncWebServer/src/port/SHA1Builder.h

@@ -0,0 +1,39 @@
+// Copyright 2024 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 SHA1Builder_h
+#define SHA1Builder_h
+
+#include <Stream.h>
+#include <WString.h>
+
+#define SHA1_HASH_SIZE 20
+
+class SHA1Builder {
+  private:
+    uint32_t      total[2];             /* number of bytes processed  */
+    uint32_t      state[5];             /* intermediate digest state  */
+    unsigned char buffer[64];           /* data block being processed */
+    uint8_t       hash[SHA1_HASH_SIZE]; /* SHA-1 result               */
+
+    void process(const uint8_t * data);
+
+  public:
+    void begin();
+    void add(const uint8_t * data, size_t len);
+    void calculate();
+    void getBytes(uint8_t * output);
+};
+
+#endif // SHA1Builder_h