I think so, the allowed characters in Base-64 are A-Za-z0-9+/=.
There is a caveat, some base-64 encoders may assume they are
only used in MIME contexts, and thus "help" the programmer by
converting any text into MIME's "canonical form" (e.g. line ends
are converted to CRLF). So, be careful about that whitespace!
Ron Daniel Jr. voice:+1 505 665 0597
Advanced Computing Lab fax:+1 505 665 4939
MS B287 email:rdaniel@lanl.gov
Los Alamos National Lab http://www.acl.lanl.gov/~rdaniel
Los Alamos, NM, USA, 87545