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Privkey size is very small #635

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opened 2025-12-29 01:28:04 +01:00 by adam · 1 comment
adam commented 2025-12-29 01:28:04 +01:00
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Originally created by @HerMajestyDrMona on GitHub (Mar 6, 2025).

The KEY_ALGO variable is for public keys, correct? But why generated privkey.pem size is only 288 bytes? Is there any need / possibility to tweak something to increase this key's length? For some reasons setting KEYSIZE="4096" doesn't change anything, and it should be default value anyway.

Originally created by @HerMajestyDrMona on GitHub (Mar 6, 2025). The `KEY_ALGO` variable is for public keys, correct? But why generated privkey.pem size is only 288 bytes? Is there any need / possibility to tweak something to increase this key's length? For some reasons setting `KEYSIZE="4096"` doesn't change anything, and it should be default value anyway.
adam closed this issue 2025-12-29 01:28:04 +01:00
adam commented 2025-12-29 01:28:05 +01:00
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@lukas2511 commented on GitHub (Mar 8, 2025):

Keysize is only relevant for RSA keys, but dehydrated uses elliptic-curve crytography (secp384r1) by default, which uses fixed key sizes. Since they work completely differently to RSA they just happen to have smaller keys while still being more secure.

@lukas2511 commented on GitHub (Mar 8, 2025): Keysize is only relevant for RSA keys, but dehydrated uses elliptic-curve crytography (secp384r1) by default, which uses fixed key sizes. Since they work completely differently to RSA they just happen to have smaller keys while still being more secure.
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Reference: starred/dehydrated#635