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woodpecker/docs/versioned_docs/version-2.0/30-administration/40-encryption.md
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Add 2.x docs (#2865) 
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Co-authored-by: Anbraten <anton@ju60.de>
2023-11-23 17:00:54 +01:00

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Secrets encryption

:::danger Secrets encryption is currently broken and therefore disabled by default. It will be fixed in an upcoming release.

Check:

:::

By default, Woodpecker does not encrypt secrets in its database. You can enable encryption using simple AES key or more advanced Google TINK encryption.

Common

Enabling secrets encryption

To enable secrets encryption and encrypt all existing secrets in database set WOODPECKER_ENCRYPTION_KEY, WOODPECKER_ENCRYPTION_KEY_FILE or WOODPECKER_ENCRYPTION_TINK_KEYSET_PATH environment variable depending on encryption method of your choice.

After encryption is enabled you will be unable to start Woodpecker server without providing valid encryption key!

Disabling encryption and decrypting all secrets

To disable secrets encryption and decrypt database you need to start server with valid WOODPECKER_ENCRYPTION_KEY or WOODPECKER_ENCRYPTION_TINK_KEYSET_FILE environment variable set depending on enabled encryption method, and WOODPECKER_ENCRYPTION_DISABLE set to true.

After secrets was decrypted server will proceed working in unencrypted mode. You will not need to use "disable encryption" variable or encryption keys to start server anymore.

AES

Simple AES encryption.

Configuration

You can manage encryption on server using these environment variables:

  • WOODPECKER_ENCRYPTION_KEY - encryption key
  • WOODPECKER_ENCRYPTION_KEY_FILE - file to read encryption key from
  • WOODPECKER_ENCRYPTION_DISABLE - disable encryption flag used to decrypt all data on server

TINK

TINK uses AEAD encryption instead of simple AES and supports key rotation.

Configuration

You can manage encryption on server using these two environment variables:

  • WOODPECKER_ENCRYPTION_TINK_KEYSET_FILE - keyset filepath
  • WOODPECKER_ENCRYPTION_DISABLE - disable encryption flag used to decrypt all data on server

Encryption keys

You will need plaintext AEAD-compatible Google TINK keyset to encrypt your data.

To generate it and then rotate keys if needed, install tinkey(installation guide)

Keyset contains one or more keys, used to encrypt or decrypt your data, and primary key ID, used to determine which key to use while encrypting new data.

Keyset generation example:

tinkey create-keyset --key-template AES256_GCM --out-format json --out keyset.json

Key rotation

Use tinkey to rotate encryption keys in your existing keyset:

tinkey rotate-keyset --in keyset_v1.json --out keyset_v2.json --key-template AES256_GCM

Then you just need to replace server keyset file with the new one. At the moment server detects new encryption keyset it will re-encrypt all existing secrets with the new key, so you will be unable to start server with previous keyset anymore.