#### Encryption at Rest
* [alpha] Encrypt secrets stored in etcd. For more information, see [Securing a Cluster](https://kubernetes.io/docs/tasks/administer-cluster/securing-a-cluster/) and [Encrypting data at rest](https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/).

#### Node Authorization

- New Metrics Added for Encryption Configuration Controller
  
  This release adds new metrics to the Encryption Configuration Controller to help monitor the automatic reloading of encryption configuration. The new metrics include:
  
  - `apiserver_encryption_config_controller_automatic_reload_failures_total`: Total number of failed automatic reloads of encryption configuration.

  - The `--experimental-encryption-provider-config` flag is deprecated in favor of `--encryption-provider-config`. The old flag is accepted with a warning but will be removed in 1.14. ([#71206](https://github.com/kubernetes/kubernetes/pull/71206), [@stlaz](https://github.com/stlaz))

- KMS: added validation for duplicate kms config name when auto reload is enabled. If you enabled automatic reload of encryption configuration with API server flag `--encryption-provider-config-automatic-reload`, ensure all the KMS provider names (v1 and v2) in the encryption configuration are unique. ([#113697](https://github.com/kubernetes/kubernetes/pull/113697), [@aramase](https://github.com/aramase))

- `kube-apiserver` updated:

- The API server now re-uses data encryption keys while the kms v2 plugin's key ID is stable.  Data encryption keys are still randomly generated on server start but an atomic counter is used to prevent nonce collisions. ([#116155](https://github.com/kubernetes/kubernetes/pull/116155), [@enj](https://github.com/enj)) [SIG API Machinery, Auth and Testing]

github.com/zmap/zcertificate,v0.0.0-20180516150559-0e3d58b1bac4,h1:17HHAgFKlLcZsDOjBOUrd5hDihb1ggf+1a5dTbkgkIY=,7dc2c0bedccfdeb9c42ef41ef502f404befa9ef073c35db3b15c99cae6697b41
github.com/zmap/zcrypto,v0.0.0-20190729165852-9051775e6a2e,h1:mvOa4+/DXStR4ZXOks/UsjeFdn5O5JpLUtzqk9U8xXw=,871979cf16453ddb4db7f153f449af4e346f68b51355c74b5eee832225618ff0

* Fix garbage collection and resource quota when the controller-manager uses --leader-elect=false ([#57340](https://github.com/kubernetes/kubernetes/pull/57340), [@jmcmeek](https://github.com/jmcmeek))
* Fixed encryption key and encryption provider rotation ([#58375](https://github.com/kubernetes/kubernetes/pull/58375), [@liggitt](https://github.com/liggitt))



# v1.8.7

Introduce KMS v2alpha1 API to add performance, rotation, and observability improvements. Encrypt data at rest (ie Kubernetes `Secrets`) with DEK using AES-GCM instead of AES-CBC for kms data encryption. No user action is required. Reads with AES-GCM and AES-CBC will continue to be allowed. See the guide [Using a KMS provider for data encryption](https://kubernetes.io/docs/tasks/administer-cluster/kms-provider/) for more information.

pkg compress/flate, type WriteError //deprecated
pkg crypto/rc4, method (*Cipher) Reset //deprecated
pkg crypto/tls, const VersionSSL30 //deprecated
pkg crypto/tls, method (*Config) BuildNameToCertificate //deprecated
pkg crypto/tls, type Config struct, NameToCertificate //deprecated
pkg crypto/tls, type Config struct, SessionTicketKey //deprecated
pkg crypto/tls, type ConnectionState struct, NegotiatedProtocolIsMutual //deprecated