To visit Iran, you must apply for a visa. It is possible to submit your visa application form electronically to Evisa Department, Ministry of Foreign Affairs website via the Internet using the following URL:
https://evisatraveller.mfa.ir/en/request/
Your passport should have at least six months of validity, beyond your actual travel date. Obviously, you are not able to submit your application, if your passport is expiring in less than 6 months. For detailed information, visit the website of the Islamic Republic of IRAN Ministry of Foreign Affairs:
https://evisa.mfa.ir/en/
The conference organizers and/or the Organizing Secretariat will not directly contact embassies and consulates on behalf of visa applicants.