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Plugins/MqttClient/Source/DTMqtt/MqttC/MQTTSHA1.h

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+// Copyright 2023 Dexter.Wan. All Rights Reserved. 
+// EMail: 45141961@qq.com
+
+#if !defined(SHA1_H)
+#define SHA1_H
+
+#if defined(OPENSSL)
+#include <openssl/sha.h>
+
+/** SHA-1 Digest Length */
+#define SHA1_DIGEST_LENGTH SHA_DIGEST_LENGTH
+
+#else /* if defined(OPENSSL) */
+
+#if defined(_WIN32) || defined(_WIN64)
+#include <windows.h>
+#include <wincrypt.h>
+typedef struct SHA_CTX_S
+{
+	HCRYPTPROV hProv;
+	HCRYPTHASH hHash;
+} SHA_CTX;
+#else /* if defined(_WIN32) || defined(_WIN64) */
+
+#include <stdint.h>
+typedef struct SHA_CTX_S {
+	uint32_t h[5];
+	union {
+		uint32_t w[16];
+		uint8_t buffer[64];
+	};
+	unsigned int size;
+	unsigned int total;
+} SHA_CTX;
+#endif /* else if defined(_WIN32) || defined(_WIN64) */
+
+#include <stddef.h>
+
+/** SHA-1 Digest Length (number of bytes in SHA1) */
+#define SHA1_DIGEST_LENGTH (160/8)
+
+/**
+ * Initializes the SHA1 hashing algorithm
+ *
+ * @param[in,out]  ctx                 hashing context structure
+ *
+ * @see MQTT_SHA1_Update
+ * @see MQTT_SHA1_Final
+ */
+int MQTT_SHA1_Init(SHA_CTX *ctx);
+
+/**
+ * Updates a block to the SHA1 hash
+ *
+ * @param[in,out]  ctx                 hashing context structure
+ * @param[in]      data                block of data to hash
+ * @param[in]      len                 length of block to hash
+ *
+ * @see MQTT_SHA1_Init
+ * @see MQTT_SHA1_Final
+ */
+int MQTT_SHA1_Update(SHA_CTX *ctx, const void *data, size_t len);
+
+/**
+ * Produce final SHA1 hash
+ *
+ * @param[out]     md                  SHA1 hash produced (must be atleast
+ *                                     @p SHA1_DIGEST_LENGTH in length)
+ * @param[in,out]  ctx                 hashing context structure
+ *
+ * @see MQTT_SHA1_Init
+ * @see MQTT_SHA1_Final
+ */
+int MQTT_SHA1_Final(unsigned char *md, SHA_CTX *ctx);
+
+#endif /* if defined(OPENSSL) */
+#endif /* SHA1_H */
+