This museum was built on a joint initiative between the Head of the National Cryptographic Agency of Indonesia, Major General TNI Nachrowi Ramli and the Governor of Yogyakarta SAR, Sri Sultan Hamengku Buwono X in 2006 and was inaugurated on July 29, 2008.
To improve the service quality, the Sandi Museum was moved to a heritage building with Dutch architecture, which was used as the office of the Ministry of Foreign Affairs in 1947 on Faridan Muridan Noto 21 Street, Kotabaru, Yogyakarta.
Visitors can learn how to make ciphers simply and learn about the history of establishing secret news security institutions at the beginning of Indonesian independence by Mr. Encryption of Indonesia – dr. Roebiono Kertopati on April 4, 1946.
The museum’s collection includes original items and replicas of cipher machines or equipment, furniture, tags, bicycles, statues/works, display cases (daily items of cipher history practitioners), slide systems, and other cipher systems, documents in the form of code books, sheets of paper, pictures in the form of photographs, maps (tracing passwords), paintings (encryption activities in negotiations), and so on.
There’s also an exhibition and kiosks detailing cryptography-related history in modern times, particularly with relation to military campaigns (such as the first Gulf War of 1990/1991), and an old-school noticeboard with post-it notes from visitors to the museum sharing their thoughts on their visit there.
According to asosiasimuseumindonesia.org, jamesgriffiths.com and id.wikipedia.org