Version control git cli updates 2026

Algorithm Key Size Security Speed Recommended
Ed25519 256 bits Excellent Very Fast ✅ Yes
RSA 2048-4096 bits Good Slower ⚠️ Use 4096-bit
ECDSA 256-521 bits Good Fast ⚠️ Complexity issues
DSA 1024 bits Weak Slow ❌ Deprecated

Create ssh key:

Will get the following email from GitHub when completed.

The following SSH key was added to your account:

ssh_work SHA256:DzOovkZVVQvrrmDTKokCx8vuVFbLC05qTC77PpIh3+E

If you believe this key was added in error, you can remove the key and disable access at the following location:

https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fsettings%2Fkeys&data=05%7C02%7Cjoe.wu%40nih.gov%7Cb893d9d5f12b4128a47d08de4d58c424%7C14b77578977342d58507251ca2dc2b06%7C0%7C0%7C639033240796610156%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=GECxluSBXaTa4L3OBI0qpitJmTk1Td6yhJNJCweVW3o%3D&reserved=0 CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and are confident the content is safe.