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How secure is emailchess?
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Since games are played clearly in email in the club, when we are talking about serious things (such as emailchess), the problem of security sometimes crops up.

Nowadays it's not impossible that somebody writes an email message in the name of somebody else, or catches an email during its path and changes its content. When there is a lot at stake, this danger can not left unspoken.

Digital signatures solve this problem. Using them ensures that an incoming message could only be originated by its sender and its content could not be altered during the transfer.

The most widely used is the PGP (Pretty Good Privacy) based public key digital signature system. This is supported in the club by the chess server also.

All the registered players can turn on and off that the server should digitally sign all messages it sends to them. The players get the server's public key (listed bellow) and with it they can verify if the message they received was really created by the server and its content is not altered.

Players can also turn on that the server should accept only digitally signed messages from them. This way they can be sure that nobody can send commands in their name and nobody can alter the message content they composed. If the signature is missing or invalid the server refuses to execute the message and sends back an error report. This also works with players who play from more email addresses.

Using digital signatures requires specific software to be installed on the players' machine that supports PGP based digital signing and verification. Freeware versions also exist out there, for example here:

But of course, no one should worry about privacy here, since sending an email message in somebody else's name or forging one requires high knowledge level. Those people are threatened in it who deal with really serious things.

In my opinion emailchess doesn't really belong to these very serious things. By all means the possibility is given to use digital signatures.

Here is the public key block that belongs to the email address, or it can be downloaded from here:

Version: PGP 7


King Shehran and Sessa ebn Daher

As the tail says there was a king in India, called Shehran, dominating on everything, but his tedium. He was bored in the morning, noon and at night, all every day, until he fell ill because of it.

Sessa ebn Daher, his court wise man, to heal the king, invented a new game, called it chess. The game was brilliant, the king has recovered from the illnes after the first game.

- What do you want as a reward? - asked Shehran.

- A few grains of wheat only: put one grain on the first square of the chessboard, then double it on the next squares - said Sessa ebn Daher.

- Humble request! - smiled the king, but finally couldn't perform it.

The number of the wheat grains was 18 trillion, 446 billiard, 744 billion, 73 milliard 709 million, 551 thousand 615, which is approximately 700 thousand million tonnes.
No Viruses Here

No Virus By default, club members do not know each other's email addresses, and all email comes from our server, so no virus can spread among our players.
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