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S List of Famous Unsolved Codes and Ciphers. Dorabella Cipher - In 1897, the well-known composer Edward Elgar (of "Pomp and Circumstance" fame) sent an encrypted message to a 23-year-old friend, Miss Dora Penny.

s List of Famous Unsolved Codes and Ciphers

To this day, it still has not been solved. D'Agapeyeff - Alexander d'Agapeyeff wrote an elementary book on cryptography in 1939, entitled "Codes and Ciphers. " In the first edition, he included a challenge cipher. Nobody's solved it, and he embarrassedly admitted later that he no longer knew how he'd encrypted it. It was left out of the second and later editions. Linear A - In 1900, a large number of clay tablets dating back to 1800 BC were discovered in Crete. The Phaistos Disk - A circular clay tablet about six inches across, discovered in Crete in the early 1900s, and believed to date back to 1800 BC. Chinese "Gold Bar" ciphers - In 1933, seven gold bars were allegedly issued to a General Wang in Shanghai, China.

Famous Unsolved Codes That Have Since Been Solved Chaocipher - Algorithm revealed, ciphers solved in 2010. Learn to read the Russian Alphabet in 75 Minutes - un knol de David Petherick. You can learn to read Russian in 75 minutes! Key Benefits: Once you have studied this document, you will be able to read Russian and speak Russian! Estimated time to master this is 75 minutes (spend fifteen minutes a day on this for the next five days).

The guide to languages, alphabets and other writing systems. Runic alphabets / Runes / Futhark. Origin Little is known about the origins of the Runic alphabet, which is traditionally known as futhark after the first six letters.

Runic alphabets / Runes / Futhark

In Old Norse the word rune means 'letter', 'text' or 'inscription'. The word also means 'mystery' or 'secret' in Old Germanic languages and runes had a important role in ritual and magic. Here are some theories about the origins of runes: The alphabet was probably created independently rather than evolving from another alphabet. The earliest known Runic inscriptions date from the 1st century AD, but the vast majority of Runic inscriptions date from the 11th century.

Notable features The direction of writing in early Runic inscriptions is variable. Types of runic inscriptions include: 'Hrolf was here' type inscriptions on cliff walls, large rocks and buildings grave stone inscriptions, often with who carved the runes and who was buried, and also who made sure the stone was raised. There are a number of different Runic alphabets including:

Jawi script. Jawi is one of the two official scripts in Brunei, and is used as an alternate script in Malaysia.

Jawi script

Usage wise, it was the standard script for the Malay language but has since been replaced by a Latin alphabet called Rumi, and Jawi has since been relegated to a script used for religious and cultural purposes. It can be typed with the Jawi keyboard. Day-to-day usage of Jawi is maintained in more conservative Malay-populated areas such as Kelantan in Malaysia and Pattani .[1] Etymology[edit]

Voynich manuscript. The Voynich manuscript is an illustrated codex hand-written in an unknown writing system.

Voynich manuscript

The vellum in the book pages has been carbon-dated to the early 15th century (1404–1438), and may have been composed in Northern Italy during the Italian Renaissance.[1][2] The manuscript is named after Wilfrid Voynich, a Polish book dealer who purchased it in 1912.[3] The pages of the codex are vellum. Some of the pages are missing, but about 240 remain. The text is written from left to right, and most of the pages have illustrations or diagrams. The Voynich manuscript has been studied by many professional and amateur cryptographers, including American and British codebreakers from both World War I and World War II.[4] No one has yet succeeded in deciphering the text, and it has become a famous case in the history of cryptography. Arabic chat alphabet. History[edit] During the last decades of the 20th century and especially since the 1990s, Western text communication technologies became increasingly prevalent in the Arab world, such as personal computers, the World Wide Web, email, bulletin board systems, IRC, instant messaging and mobile phone text messaging.

Arabic chat alphabet

Most of these technologies originally had the ability to communicate using Latin script only, and some of them still do not have the Arabic alphabet as an optional feature. As a result, Arabic speaking users communicated in these technologies by transliterating the Arabic text in to English using Latin script. To handle those Arabic letters that do not have an approximate phonetic equivalent in the Latin script, numerals and other characters were appropriated. For example, the numeral "3" is used to represent the Arabic letter ⟨ع⟩ (ʿayn), note the usage of the mirroring technique to create a visual similarity between the Arabic letter and its numeral substitution. Arabic alphabet. The Arabic alphabet (Arabic: أَبْجَدِيَّة عَرَبِيَّة‎ abjadīyah ʻarabīyah) or Arabic abjad is the Arabic script as it is codified for writing the Arabic language.

Arabic alphabet

It is written from right to left, in a cursive style, and includes 28 letters. Because letters usually[1] stand for consonants, it is classified as an abjad. Consonants[edit] Many letters look similar but are distinguished from one another by dots (i‘jām) above or below their central part (rasm). These dots are an integral part of a letter, since they distinguish between letters that represent different sounds. Both printed and written Arabic are cursive, with most of the letters within a word directly connected to the adjacent letters. Alphabetical order[edit] There are two main collating sequences for the Arabic alphabet: The most common abjadī sequence is: Note: In this sequence, and all those that follow, the letters are presented in Arabic writing order, i.e., right to left.

This is commonly vocalized as follows: Notes ﻻ‎ ﷲ‎