You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
The only thing "CCM" about it is that it prepends (15 - nonce_len - 1) (so 0x02) to nonces. It doesn't use a MAC. It doesn't have associated data. And crucially, it doesn't use the first keystream block for that, which definitely makes it not CCM and not compatible with CCM.
Lol, I take that back. It *is* CCM, it's just that libbde incorrectly implements it as CTR and it works by accident (and returns 16 bytes of garbage before the plaintext). The correct ciphertext format is <12b nonce><16b tag><ciphertext>, not <12b nonce><ciphertext>.
I think they just check the structure of the data (if that). It's mostly used for keys and those usually have a little header.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.
