[jira] Updated: (CODEC-91) Handling of embedded padding in base64 encoded data changed in 1.4

["Julius Davies (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CODEC-91?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julius Davies updated CODEC-91:
-------------------------------

    Attachment: codec-91.patch


The attached patch brings back the original commons-codec-1.3.jar behaviour as requested by Chris Pimlott.

NOTE:  This is another way to unearth the bug in CODEC-98, so we'll need the CODEC-98 fix if we accept this patch.

> Handling of embedded padding in base64 encoded data changed in 1.4
> ------------------------------------------------------------------
>
>                 Key: CODEC-91
>                 URL: https://issues.apache.org/jira/browse/CODEC-91
>             Project: Commons Codec
>          Issue Type: Bug
>    Affects Versions: 1.4
>            Reporter: Chris Pimlott
>         Attachments: codec-91.patch
>
>
> 1.4 changed the way that embedded padding characters (i.e. "=") were handled when decoding base64 data.  Previously, the decoder ignored them and decoded all the data.  Now it stops upon encountering the first padding byte.  This breaks compatibility with previous versions.
> For example, in 1.4,
> b64.decode("Y29tbW9ucwo=".getBytes());
> gives the same result as
> b64.decode("Y29tbW9ucwo=Y29tbW9ucwo=".getBytes());

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