Unable to decrypt signature, key length 89 not supported;

[thePunIssuer]

Thanks for this otherwise great tool! Retrying didn't help, worked like a charm on another file (tested with http://www.youtube.com/watch?v=Dcr8dm9Prkk)

youtube-dl --verbose http://www.youtube.com/watch?v=hyLStCdfy-k
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', 'http://www.youtube.com/watch?v=hyLStCdfy-k']
[debug] youtube-dl version 2013.07.25.2
[debug] Python version 3.3.2 - Linux-3.10.3-1-ARCH-x86_64-with-arch
[debug] Proxy map: {}
[youtube] Setting language
[youtube] hyLStCdfy-k: Downloading video webpage
[youtube] hyLStCdfy-k: Downloading video info webpage
[youtube] hyLStCdfy-k: Extracting video information
[youtube] hyLStCdfy-k: Encrypted signatures detected.
[youtube] encrypted signature length 89 (44.44), itag 35, html5 player vfl_wGgYV
ERROR: Unable to decrypt signature, key length 89 not supported; retrying might work; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
File "/usr/lib/python3.3/site-packages/youtube_dl/YoutubeDL.py", line 312, in extract_info
ie_result = ie.extract(url)
File "/usr/lib/python3.3/site-packages/youtube_dl/extractor/common.py", line 96, in extract
return self._real_extract(url)
File "/usr/lib/python3.3/site-packages/youtube_dl/extractor/youtube.py", line 614, in _real_extract
signature = self._decrypt_signature(url_data['s'][0])
File "/usr/lib/python3.3/site-packages/youtube_dl/extractor/youtube.py", line 304, in _decrypt_signature
raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
youtube_dl.utils.ExtractorError: Unable to decrypt signature, key length 89 not supported; retrying might work; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output.

[chbrown]

I was getting the same error, for a different movie, but also from VEVO, and can verify that this is fixed as of 2013.08.09. Just youtube-dl --update and then retry.

Thanks to @patrickslin via @sulge & @firmanelhakim at #1208 (and #1215)!

I recommend to the developers (@phihag) that the error message also encourages updating and then retrying (at least when --verbose is used); I installed youtube-dl via homebrew, originally, and wasn't aware that I could get the latest version so easily (homebrew lags behind a few days sometimes).

[phihag]

@chbrown Thanks for the suggestion, added a message to that effect. Feel free to suggest a better wording.

[thePunIssuer]

Silly me -_- Sorry for the inconvenience!

[jhb50]

I'd suggest the wording be changed to "ERROR: Unable to decrypt signature, key length xx not supported; retry or check for updated version; else please report this issue on ...