suggests that a file+url should be simply transformed into a file+base64 content. Have a question about this project? Therefore I think base64's usage in URLs may have contributed to its ascension, in the same way that its use in the IBM PC helped the x86 — it's not where the thing came from or why it was designed, but it led to a substantial propagation. In practice binary files still need to be encoded (because of poor support for RFC 3030's BINARYMIME), but not most text messages. The extra newlines were usually easy to fix, and the uuencode format made it easy to see where they had occurred, but corruption due to character set translation was much harder to fix (sometimes impossible without trial-and-error testing). To learn more, see our tips on writing great answers. Perhaps you could explain why the variation between character assignments in various EBCDIC code pages is more of a problem for uuencode than for base64? † e.g. Successfully merging a pull request may close this issue. The only limitation on the body STMP messages is the 1000 character line length limit. By clicking “Sign up for GitHub”, you agree to our terms of service and Why does UNIX ed not have a prompt by default.

site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. It was sensitive to formatting and white spaces. do we want to actively avoid anti virus scanners because false positives? Do doctors "get more money if somebody dies from Covid”? Some people would post base64-encoded binaries, arousing mild ire from these, who didn't have decoders. Base64 is not sensitive to whitespace formatting at all as whitespace is specified to have a very specific meaning in base64: it means ignore this byte and read the next byte. Added a note about base64, uuencode/decode fill the common case (POSIX based file system) where we would want to preserve name/file permissions when it matters). Keep in mind at that time, many people were using systems that did not have a C compiler (the C compiler was often sold as an expensive add-on if it was available at all, and this was before GCC was widely available) so acquiring and compiling their own base64 decoder was a significant effort. Could evaporation of a liquid into a gas be thought of as dissolving the liquid in a gas? (That doesn’t answer the non-path aspect of course since file system paths already used, @RossRidge SMTP is a line oriented text based protocol.

Actually, reflowed uuencode, although theoretically recoverable, was not handled well by the tools. Why did MIME pick Base64 over UUencode? Conversely, the standard Base64 decoding algorithm doesn't care about spaces or line breaks at all. Looking at a selection of EBCDIC Latin-1 code pages, the letters and numbers have consistent code points, but the punctuation code points vary wildly. one that has the data directly within it†) is as base64. they're used to gather information about the pages you visit and how many clicks you need to accomplish a task. Base64 is marginally simpler and more common today.

What prevents dragons from destroying or ruling Middle-earth? worth bearing in mind that URLs are ephemeral: a CVE document may want to be processed to fetch all URLs so that if they go offline, they are not lost. How to do a simple calculation on VASP code? What happened? By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. I’m not sure about specific events, but I think the main reason Base64 “won” is that it’s one of the binary encodings supported by MIME, and MIME took over. pls help me :) resolving this. The name "uuencoding" is derived from "Unix-to-Unix encoding", i.e. The "dot" problem you mentioned is a non-issue. iam having issues in dot net c# for decoding attachments which are in uunecoded format Base64 (RFC 1421) pre-dates URLs (RFC 1738) by almost two years, Podcast 283: Cleaning up the cloud to help fight climate change, Creating new Help Center documents for Review queues: Project overview. The decline in popularity of terminal-mode access compared to GUI access is what really killed uuencode. As for URLS the DWF plan (I can't speak to MITRE/other root CNAs) is to ideally embed artifacts within the JSON file so that if a website is not available, we have a copy in the database. Which is the point. We use optional third-party analytics cookies to understand how you use so we can build better products. It's solved by the same dot-stuffing algorithm that lets you send a plain text message with a single period on a line. So it's just really easy for developers to support.

Retrocomputing Stack Exchange is a question and answer site for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear. and filename (perhaps redundant as it looks like that is included in the JSON container object?). Possibly because Base64 is actually, Why did MIME become the dominant mail/news content wrapper? Base64 was not nearly so well liked. Base64 encoding solved these problems and was therefore a better choice for use within the MIME email encoding standard. You're just saying: its ascension into URLs is consequence, not cause. Users who were using graphical email clients on a PC or on a Workstation or X Terminal, found base64-encoded MIME attachments more convenient than uuencoding, and web browsers allowed you to download files without needing any encoding at all (shifting the common method of binary file transfer away from mail and news, towards the use of FTP and HTTP instead). Base64 is marginally simpler and more common today. Email RFC 822). Also, the UU charset includes " and \ which need to be escaped in JSON strings. Can a clause be added to a terms of use that forbids use of the service if the terms of use would be illegal in the user's jurisdiction? How is it possible for a company that has never made money to have positive equity? this tiny document icon that I cribbed from this site, which doesn't identify a remote resource but itself contains a local resource. In the Mueller report, what are the SM-[number]-[word] documents in the footnotes? The first line will be ‘begin ’ and two extra lines are used to indicate end-of-file, the second last line has a single byte 0x20 and the last line will contain ‘end’. Supporting obfuscation so as to not trigger AV has its merits, but I'm a little hesitant about Zip because it's a container for multiple files. Uuencoding is still an easy way to send a file when both the sender and receiver are using text-only terminals and can't use FTP, but today this is almost never the case. Add 32 to 45 (to get a printable charcter) and we get 77 = M, thus you will find all lines except the last begin with M. For example, if a mail server sees the sequence. The format was quite robust, insensitive to line breaks (if your mail program reflowed the text, for uuencode you could still decode the file) and the uuencode/uudecode programs were quite user-friendly. I'm not entirely sure, but I think it generated a little bigger output too.

You can always update your selection by clicking Cookie Preferences at the bottom of the page. and filename (perhaps redundant as it looks like that is included in the JSON container object?). Since Base64 only used 6 bits to encode, thus the total possible encodings are 2^6 = 64, hence the name Base64 encoding. You try to uudecode and it all goes horribly wrong. Where to repeat in this Jingle Bells score? I guess the URL field can already be used like this. How is it possible that a