Would you like to prove to your contacts the authenticity of your emails ? A S/MIME signature of your messages may be a solution. It will guarantee that a message comes from you, and that its content wasn’t altered. You can do it for free – as long as it’s for a personnal use – using a Comodo free email certificate. The solution may be seducing, but there are two caveats.
First, the validation of your signature is done by your recipient email client, and most email clients just don’t support it. As a rule of thumb, consider only the outlook desktop app supports it (gmail, outlook.com, default android client don’t support it, iphone can support it but it’s disabled by default). And there’s nothing you can do about it.
Second, the procedure to sign your messages may give some headaches, and it’ll be different for each email client. But at least, here is a step by step guide to digitally sign outgoing messages on Outlook.
Pour comprendre les mécanismes EMV, il est toujours intéressant d’avoir des exemples d’APDU et de dialogues. Ci-dessous, un exemple d’une transaction EMV sans contact réussie (achat sans-contact MasterCard PayPass). Inutile de récupérer les infos de la carte, c’est une carte de test invalide dans le monde réel 🙂 PCD identifie les commandes du terminal, PICC les réponses de la carte MasterCard : Continue reading →
When working on EMV transactions, it’s always interesting to have some APDU examples and dialog sequences. Below is an example of a successful MasterCard PayPass contactless transaction. Don’t bother trying to use the card info, it is dummy info 🙂 PCD identifies the terminal commands, PICC the PayPass card responses : Continue reading →