If you require an official invitation letter for visa application please send e-mail to "visa at tcc2013 dot com" as instructed below.
The request mail should include "a scanned copy of your passport (the page of your photo and passport number)" and "a letter of endorsement" signed by an appropriate representative of your affiliation.
The endorsement letter should include your full name, title and affiliation, work address, phone and fax number and email address. If you have attended past IACR conferences or workshops, let us know the conference name and year, too.
TCC committee will only issue a letter of invitation after authors have paid their registration fee and provided the requested information.
Please visit the webpage of the Ministry of Foreign Affairs of Japan or contact the nearest Japanese embassy in your country for more details.