/usr/lib/R/site-library/base64enc/NAMESPACE is in r-cran-base64enc 0.1-1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | useDynLib(base64enc, B64_encode, B64_decode, C_URIencode)
export(base64encode, base64decode, dataURI)
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