Sshd_config

Using Ed25519 for OpenSSH keys (instead of DSA/RSA/ECDSA)

Many years the default for SSH keys was DSA or RSA. There is a new kid on the block, with the fancy name Ed25519. Let's have a look at this new key type.

Summary of Using Ed25519 for OpenSSH keys (instead of DSA/RSA/ECDSA)

Introduction into Ed25519 OpenSSH 6.5 added support for Ed25519 as a public key type. It is using an elliptic curve signature scheme, which offers better security than ECDSA and DSA. At the same time, it also has good performance. This type of keys may be used for user and host keys. With this in mind, it is great to be used together with OpenSSH. In this article, we have a look at this new key type.

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