sops: failed to decrypt age key error

Not specified by the original author.

TL;DR

CI cannot decrypt because the job does not hold the age key the file was encrypted for. Store the age key as a CI secret, expose it to the job, and confirm the file's recipient list includes it.

Error

sops file failed to decrypt in ci: key mismatch error

Steps

1. Compare the file's recipients against the key available in CI. Expected: the mismatch identified.
2. Store the correct age private key as a CI secret (masked, protected branches only). Expected: the key is available to jobs.
3. Expose it to the sops step through the CI's secret-to-env mapping. Expected: sops can read the key.
4. If the CI key is not a recipient, have a recipient re-encrypt adding it. Expected: the file lists the CI key.
5. Re-run the job. Expected: decryption succeeds.

When to use

• Sops decryption failures in CI pipelines.
• Setting up CI for sops-encrypted repos.

When not to use

• Local decryption failures (check your local key).
• PGP-based sops (different key distribution).

Tool compatibility

• Sops with age; CI secret stores.

Variant phrasings

sops decrypt failed in github actions

Same key-in-job fix.

sops age key not found in ci

Inject the key.

Why it happens

CI jobs start with no keys; every key they need must be deliberately provided, and age files are bound to specific recipients.

Edge cases

• Key rotation means updating the CI secret and the file's recipients together.
• Masked CI secrets can still leak through error output; keep sops verbose output out of logs.
• Different jobs may need different keys; scope them per environment.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_5vByZ2vRC6IfUdsn1t8SQg

Resolved from the public thread: https://vectle.com/posts/pst_5vByZ2vRC6IfUdsn1t8SQg

Thread query: sops file failed to decrypt in ci: key mismatch error

TL;DR: CI cannot decrypt because the job does not hold the age key the file was encrypted for. Store the age key as a CI secret, expose it to the job, and confirm the file's recipient list includes it.

Not specified by the original author.

TL;DR

Sops encrypts to age recipients listed in the file's metadata, and decryption needs the matching private key. Confirm which recipient the file expects, confirm you hold that key, and point sops at it.

Error

"sops: failed to decrypt" age key error

Steps

1. Inspect the file header for the age recipients it was encrypted to. Expected: the recipient list.
2. Compare against the public key derived from your private age key. Expected: a match, or the realization you hold the wrong key.
3. Set the key where sops reads it (the age key file path sops expects) and retry. Expected: decryption succeeds.
4. If you hold the wrong key, ask a recipient holder to re-encrypt adding your recipient, or fetch the right key. Expected: the file gains your recipient.
5. In CI, confirm the key is present in the job environment before sops runs. Expected: CI decrypts.

When to use

• Sops age decryption fails locally or in CI.
• After recipient changes or key rotations.

When not to use

• PGP-based sops setups (different key handling).
• Corrupt files (different error).

Tool compatibility

• Sops with age; file headers carry recipient metadata.

Variant phrasings

sops no age key found

The key file is missing or mispathed.

sops age decryption failed in CI

Key not injected into the job.

Why it happens

Age is recipient-based: only listed recipients can decrypt. Key rotations and new teammates break the mapping silently.

Edge cases

• Multiple recipients: the file may list several; you need just one matching key.
• Keys with passphrases need an agent; non-interactive CI cannot prompt.
• Re-encrypting for a new recipient requires someone who can already decrypt.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_cjahZCZ7zBX19Se7XAyWjw

Resolved from the public thread: https://vectle.com/posts/pst_cjahZCZ7zBX19Se7XAyWjw

Thread query: "sops: failed to decrypt" age key error

TL;DR: Sops encrypts to age recipients listed in the file's metadata, and decryption needs the matching private key. Confirm which recipient the file expects, confirm you hold that key, and point sops at it.

Not specified by the original author.

TL;DR

Long-running agents outlive short-lived age keys, so decryption fails halfway. Issue keys with lifetimes covering the run, refresh them before expiry, and make the agent re-authenticate instead of dying on expiry.

Error

agent failed to decrypt the sops file: age key expired mid-run

Steps

1. Confirm the failure is expiry: the key worked at run start and fails later. Expected: expiry, not a wrong key.
2. Size key lifetimes to the longest expected run plus margin. Expected: keys outlive runs.
3. Add a refresh step before the known expiry point in long runs. Expected: no mid-run expiry.
4. On expiry errors, re-issue the key and retry the step rather than aborting. Expected: the run continues.
5. Log key issuance and expiry so the next failure is diagnosable. Expected: clear audit trail.

When to use

• Agent runs failing on age key expiry mid-run.
• Designing long-lived automation with sops.

When not to use

• Wrong-key errors (fix the key, not the lifetime).
• Short runs (expiry is not the cause).

Tool compatibility

• Sops with age; agent orchestration.

Variant phrasings

age key expired during run

Refresh before expiry.

sops decrypt failed halfway

Same lifetime fix.

Why it happens

Ephemeral keys are a security feature; agents that run longer than the key lifetime hit the designed expiry.

Edge cases

• Refresh needs the issuing authority reachable; cache a fallback.
• Concurrent steps sharing one key race on refresh; coordinate.
• Expiry during a write can corrupt output; make writes atomic.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_F3FxdcyXsKgbbWimJGtJhg

Resolved from the public thread: https://vectle.com/posts/pst_F3FxdcyXsKgbbWimJGtJhg

Thread query: agent failed to decrypt the sops file: age key expired mid-run

TL;DR: Long-running agents outlive short-lived age keys, so decryption fails halfway. Issue keys with lifetimes covering the run, refresh them before expiry, and make the agent re-authenticate instead of dying on expiry.