Initial community commit

Src/auth/OAuthKey.cpp

@@ -0,0 +1,31 @@
+#include "OAuthKey.h"
+#include "b64.h"
+
+OAuthKey::OAuthKey(const void *key, size_t key_len)
+{
+	HMAC_SHA256_Init(&ctx);
+	HMAC_SHA256_UpdateKey(&ctx, (unsigned char *)key, (int)key_len);
+	HMAC_SHA256_EndKey(&ctx);
+	HMAC_SHA256_StartMessage(&ctx);
+}
+
+OAuthKey::~OAuthKey()
+{
+	HMAC_SHA256_Done(&ctx);
+}
+
+void OAuthKey::FeedMessage(const void *data, size_t data_len)
+{
+	HMAC_SHA256_UpdateMessage(&ctx, (unsigned char *)data, (unsigned int)data_len);
+}
+
+void OAuthKey::EndMessage()
+{
+	HMAC_SHA256_EndMessage(buf, &ctx);
+}
+
+void OAuthKey::GetBase64(char *output, size_t cch)
+{
+	size_t len = b64::b64_encode(buf, HMAC_SHA256_DIGEST_LENGTH, output, cch);
+	output[len] = '\0';
+}