Enabling SSE-S3
To write S3-SSE encrypted files, the value of
fs.s3a.server-side-encryption-algorithm
must be set to that of the
encryption mechanism used in core-site.xml
; currently only
AES256
is supported.
<property> <name>fs.s3a.server-side-encryption-algorithm</name> <value>AES256</value> </property>
Once set, all new data will be uploaded encrypted. There is no need to set this property when downloading data — the data will be automatically decrypted when read using the Amazon S3-managed key.
To learn more, refer to Protecting Data Using Server-Side Encryption with Amazon S3-Managed Encryption Keys (SSE-S3) in AWS documentation.
Note | |
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When encrypted files are renamed, they are de-encrypted and then re-encrypted with the encryption settings algorithm of the client application performing the rename. If a client with encryption disabled renames an encrypted file, the new file will be unencrypted. |