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Indicates how the secret to sign the authentication cookies will be Whitelist ACL for DECRYPT_EEK operations for all keys.ĭefault ACL for MANAGEMENT operations for all keys that are notĭefault ACL for GENERATE_EEK operations for all keys that are notĭefault ACL for DECRYPT_EEK operations for all keys that are notĭefault ACL for READ operations for all keys that are not Whitelist ACL for MANAGEMENT operations for all keys. NOTE: The default and whitelist key ACL does not support ALL operation qualifier.ĪCL for create-key, deleteKey and rolloverNewVersion operations.ĪCL for getKeyVersion, getKeyVersions, getMetadata, getKeysMetadata, If no ACL is configured for a specific key AND no default ACL is configured AND no whitelist key ACL is configured for the requested operation, then access will be DENIED. If a per-key ACL is explicitly set, a user will be granted access if they are present in the per-key ACL or the whitelist key ACL. That is, if no per-key ACL is explicitly set, a user will be granted access if they are present in the default per-key ACL or the whitelist key ACL. The whitelist key ACL grants access to the key, in addition to the explicit or default per-key ACL. It is also possible to configure a “whitelist” key ACL for a subset of the operation types. These can be defined in the KMS etc/hadoop/kms-acls.xml as followsįor all keys for which a key access has not been explicitly configured, It is possible to configure a default key access control for a subset of the operation types. READ - getKeyVersion, getKeyVersions, getMetadata, getKeysMetadata, getCurrentKey.GENERATE_EEK - generateEncryptedKey, reencryptEncryptedKey, reencryptEncryptedKeys, warmUpEncryptedKeys.MANAGEMENT - createKey, deleteKey, rolloverNewVersion.All Key Access operations are classified as :
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KMS supports access control for all non-read operations at the Key level. To provide the key material when creating or rolling a key.Ĭomplimentary Blacklist for CREATE and ROLLOVER operation to allow the client If the user is in the Blacklist, the key material is not returnedĪCL for get-key-version and get-current-key operations.ĪCL for get-key-metadata and get-keys-metadata operations.īlacklist for get-key-metadata and get-keys-metadata operations.Ĭomplimentary ACL for CREATE and ROLLOVER operation to allow the client If the user is not in the GET ACL, the key material is not returned
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Server-side can be changed via the following properties in the etc/hadoop/kms-site.xml configuration file: This behavior is a trade off to avoid locking on the cache, and is acceptable since the old version EEKs can still be used to decrypt.īelow are the configurations and their default values: In the worst case, the caller may get up to (server-side cache size + client-side cache size) number of old EEKs, or until both caches expire. Note that due to the asynchronous filling mechanism, it is possible that after rollNewVersion(), the caller still gets the old EEKs. The expiry approach is expireAfterAccess. Internally Guava cache is used as the cache implementation. The cache expiry time, in milliseconds.The maximum number of asynchronous threads overall, across key names, allowed to fill the queue in a cache.For each key name, only 1 thread could be running for the asynchronous filling. For each key name, if after a get call, the number of cached EEKs are less than (size * low watermark), then the cache under this key name will be filled asynchronously. This is the maximum number of EEKs that can be cached under each key name. The following are configurable on the cache: KMS and its client have built-in security and they support HTTP SPNEGO Kerberos authentication and HTTPS secure transport.Īrchitecturally, both server-side (e.g. The client is a KeyProvider implementation interacts with the KMS using the KMS HTTP REST API. It provides a client and a server components which communicate over HTTP using a REST API. Hadoop KMS is a cryptographic key management server based on Hadoop’s KeyProvider API. Batch Re-encrypt Encrypted Keys With The Latest KeyVersion.Re-encrypt Encrypted Key With The Latest KeyVersion.Generate Encrypted Key for Current KeyVersion.Enabling Kerberos HTTP SPNEGO Authentication.Hadoop Key Management Server (KMS) - Documentation Sets Running Applications in Docker Containers.