[HADOOP-10713] Refactor CryptoCodec#generateSecureRandom to take a byte[]

• Type: Sub-task
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: fs-encryption (HADOOP-10150 and HDFS-6134)
• 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: Andrew Wang
• Reporter: Andrew Wang
• Created: 17/Jun/14 05:00
• Updated: 22/Jun/14 07:21
• Resolved: 22/Jun/14 07:21

Description

Following suit with the Java Random implementations, it'd be better if we switched CryptoCodec#generateSecureRandom to take a byte[] for parity.

Also, let's document that this method needs to be thread-safe, which is an important consideration for CryptoCodec implementations.