A Public Key for the Public

Encryption startup Voltage Security has just received $15M in second round financing.

The Company makes a public key encryption mechanism call Identity Based Encryption, that greatly simplifies the use of public keys.

Existing public key technology, like that offered by PGP relies on key pairs, and one of those keys must be distributed to users sending message the key owner messages. Voltage’s technology replaces the long string representing the key with something simple like an email address.

Haven’t seen it in action yet, but I am curious as heck, as this sounds like it could be an interesting way to bridge the divide between bayesian spam filtering and challenge-response systems.

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