S/MIME : Java Glossary

The CurrCon Java Applet displays prices on this web page converted with today’s exchange rates into your local international currency, e.g. Euros, US dollars, Canadian dollars, British Pounds, Indian Rupees… CurrCon requires an up-to-date browser and Java version 1.8, preferably 1.8.0_112. If you can’t see the prices in your local currency, Troubleshoot. Use Firefox for best results.

S/MIME (Secure Multipurpose Internet Mail Exchange) is a scheme for electronically signing or encrypting your email messages. When you sign them, it proves to the recipient the message really did come from you and was not tampered with en-route. When you encrypt them, no one can eaves drop on the messages. They arrive scrambled and have to be decrypted to read them, just as with PGP (Pretty Good Privacy).

With S/MIME, you first send each other a signed message which piggybacks your public key. From then on you can exchange encrypted messages. With PGP, there are key registries where you can get people’s keys, so you can send encrypted mail even to a total stranger whom has never written you before. With PGP there is no central certificate issuing authority to check everyone’s credentials. You only know that someone’s key really is theirs’s because someone you trust or someone, whom someone you trust, trusts, said it was, in a web of trust.

Unfortunately, Eudora does not support S/MIME though there are plug-ins available from third parties, e.g. Cryptigo: Eudora S/MIME plug-in for $20.00 USD .

You can acquire two classes of digital ids to use with S/MIME. A first class id, sometimes called a personal email id, attests that indeed a real person of that name has possession of the signing key. A second class id just attests that the holder of the signing key once received mail at the return email address. You can get one of these free.

To sign or encrypt an email, you must enter a passphrase. This stops your children from sending signed mail in your name using your digital id certificate stored in the email program of your computer then you are not looking.

S/MIME Digital Id Certificates
Source Cost
CurrCon Applet needs Java 1.8 or later to display prices in your local currency.
CurrCon Applet needs Java 1.8 or later to display prices in your local currency.
Thawte free Class two id. You can upgrade it free to class one via a process of meeting other people and showing them your credentials, called web of trust.
Verisign $10.00 USD  per year Class one id. You need a credit card to validate your id.
GlobalSign €16.00 EUR  per year Class one id. You need to send a signed copy of your passport, driver’s licence, or id card.

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