Show HN: Prmana – OIDC SSH Login for Linux with DPoP (Rust, Apache 2.0)

3 points

2 months ago

prmana replaces static SSH keys with short-lived OIDC tokens validated at the host through PAM. What makes it different from other OIDC-for-SSH approaches is DPoP (RFC 9449) — every authentication includes a cryptographic proof that the token holder has the private key. Stolen tokens can't be replayed.

Three components: a PAM module (pam_prmana.so), a client agent (prmana-agent), and a shared OIDC/JWKS library (prmana-core). All Rust.

DPoP keys can be software, YubiKey (PKCS#11), or TPM 2.0. No gateway, no SSH CA, no patches to sshd. Standard ssh client, standard sshd, PAM in between.

Tested against Keycloak, Auth0, Google, and Entra ID.

The name is from Sanskrit — pramana (प्रमाण) means "proof."

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