4 ms·

Missing - key backup/escrow, verifiable trust (you can't just trust the first key sent to you for a specific email address), key revocation, and portability. S

• WalterBright 10y ago
  Key backup - store it unencrypted on your own hard disk. The encryption/decryption is only for transport. Verifiable trust - if it's a recipient you care about, you can phone them and ask if the key is correct. Key revocation - easily done using email headers. Portability - I proposed a portable system. Make it part of the email standard, just like the "Subject:" metadata.