Mail encryption
There is a general security risk on the Internet, as data transfer on the Internet is always unencrypted. To ensure that emails can only be received and read by authorized persons, there are various security mechanisms for encrypting emails. This also fulfills the requirements of the General Data Protection Regulation.
end-to-end encryption
End-to-end encryption guarantees a high level of security in data transfer. Before an email is sent, it is encrypted by the sender, remains encrypted across all transmission stations and is decrypted again by the recipient. This mail encryption provides complete protection that does not allow any intermediate stations to be involved. This ensures increased confidentiality, authenticity and integrity of the data.
Furthermore, emails are encrypted using digital signature procedures with two keys. Each user generates a private signature key (private key) and a public verification key (public key). With the help of the public key, every user can encrypt their mail and only the owner of the private key, who decrypts the encrypted mail, can decrypt it again. The public key can therefore only encrypt the data and the private key can decrypt it again. This type of coding is called asymmetric encryption. Although it is slower than symmetric encryption, in which the sender and recipient have a shared key, it is more secure.
Mail encryption for servers
Encryption is an established standard for email servers. This is done using various encryption protocols. These include, for example, Transport Layer Security (TLS), which is used by most web browsers and web servers, such as Firefox. Encrypted communication between a computer and a web server can be recognized by the Hypertext Transfer Protocol Secure (HTTPS) or by a small lock in the browser bar. Different exchange protocols are assigned to different ports for unencrypted and encrypted communication between mail servers. Port 25 is normally used with the Simple Mail Transfer Protocol (SMTP), i.e. unencrypted. Encrypted communication can, for example, take place via port 465 using the Simple Mail Transfer Protocol Secure.
The topic of email encryption is very important, as it is expressly recommended by the European General Data Protection Regulation (GDPR). The GDPR is fully included in the IT service of the Bremen-based company b.r.m. IT & Aerospace is fully included. If you have any questions about sending and encrypting emails, please contact us.












