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Sending an encrypted PGP email to someone who doesn’t yet have my public key

Posted on March 3, 2015 by Geremia

Suppose I have the public key of a recipient I’d like to send an email to, and I’ve never sent this person an email before. Does it make sense to encrypt my first email to this recipient and also attach my public key? Can the… Continue reading Sending an encrypted PGP email to someone who doesn’t yet have my public key→

Is it possible to convert a public key to a certificate using the public key only?

Posted on August 20, 2013 by Geremia

I’ve seen the following, which takes a private key to form a cert request, which can then be self-signed:
openssl req -new -key privkey.pem -out cert.csr

But, given a public key only (such as in SSH, OpenSSL, PEM, PKCS8 format), how do I … Continue reading Is it possible to convert a public key to a certificate using the public key only?→