[HADOOP-10853] Refactor get instance of CryptoCodec and support create via algorithm/mode/padding.

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: fs-encryption (HADOOP-10150 and HDFS-6134)
• Component/s: security
• Target Version/s: fs-encryption (HADOOP-10150 and HDFS-6134)
• Hadoop Flags: Reviewed
• Assignee: Yi Liu
• Reporter: Yi Liu
• Created: 17/Jul/14 07:13
• Updated: 22/Jul/14 14:27
• Resolved: 22/Jul/14 08:39

Description

We should be able to create instance of CryptoCodec:

• via codec class name. (Applications may have config for different crypto codecs)
• via algorithm/mode/padding. (For automatically decryption, we need to find correct crypto codec and proper implementation)
• a default crypto codec through specific config.

This JIRA is for

• Create instance through cipher suite(algorithm/mode/padding)
• Refactor create instance of CryptoCodec into CryptoCodecFactory

We need to get all crypto codecs in system, this can be done via a Java ServiceLoader + hadoop.security.crypto.codecs config.