[Catalyst] How to encrypt database password when connect?

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I write my database connect info in the yml files.It's not very safe because
the database password can see by everyone who can access the catalyst
folder.I want to know if there any way to encrypt the database password use
the internal method of connect_info?
Here's my yml file:
      1 ---
      2 name: Add
      3 Model::Add:
      4   schema_class: flexDB
      5   connect_info:
      6       - dbi:mysql:database=3Dgsmflex;host=3Dlocalhost
      7       - 'root'
      8       - 'root'
      9       - AutoCommit: 1
     10         quote_char: '`'
     11         name_sep: '.'
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