BIO_f_base64 either requires wrapped base64 with a short
initial line, or when BIO_FLAGS_BASE64_NO_NL is set, all data
must be on a single line (with or without trailing newline
character). See BIO_f_base64(3ossl) for more details.
RFC 8951 (an update to RFC 7030) clarifies that senders are
not required to insert white space (such as LF) in
base64-encoded payloads. Therefore libest must handle
wrapped or unwrapped base64 with lines of any length.
This leaves two options:
set BIO_FLAGS_BASE64_NO_NL and unwrap the input lines
leave the flag unset but split long lines and ensure the
input ends with a newline.
Option 1 is simpler so that's what this commit implements.
BIO_f_base64either requires wrapped base64 with a short initial line, or whenBIO_FLAGS_BASE64_NO_NLis set, all data must be on a single line (with or without trailing newline character). SeeBIO_f_base64(3ossl)for more details.RFC 8951 (an update to RFC 7030) clarifies that senders are not required to insert white space (such as LF) in base64-encoded payloads. Therefore libest must handle wrapped or unwrapped base64 with lines of any length.
This leaves two options:
set
BIO_FLAGS_BASE64_NO_NLand unwrap the input linesleave the flag unset but split long lines and ensure the input ends with a newline.
Option 1 is simpler so that's what this commit implements.