34 lines
546 B
Markdown
34 lines
546 B
Markdown
---
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title: ssh
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updated: 2021-05-04 14:58:11Z
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created: 2021-05-04 14:58:11Z
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---
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# SSH keys
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## check current
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```bash
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for keyfile in ~/.ssh/id_*; do ssh-keygen -l -f "${keyfile}"; done | uniq
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```
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Ed25519 is intended to provide attack resistance comparable to quality 128-bit symmetric ciphers.
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```bash
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ssh-keygen -o -a 100 -t ed25519
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```
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result
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```bash
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~/.ssh/id_ed25519
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```
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### Change or set a passphrase
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```bash
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ssh-keygen -f ~/.ssh/id_rsa -p -o -a 100
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```
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[Source](https://blog.g3rt.nl/upgrade-your-ssh-keys.html)
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