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When storing a binary blob of data in keychain for security reasons, what is considered a "big" blob of data? 1kB? 1MB? How big a blob of binary data can you store in keychain (without running into performance issues and whatnot).

bobobobo
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    Please refer to [Maximum keychain size][1] [1]: http://stackoverflow.com/questions/13488793/is-there-any-length-limit-of-string-stored-in-keychain – Abhinav Oct 26 '13 at 04:16

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The maximum length of your keychain string can be somewhere between 4 to 4.5 billion characters. You most likely aren't going to need to worry about this.

Jojodmo
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    Where did you get the 4Gig number from? Empirical testing shows the value to be much less (in the 16Meg range.) – Olie Nov 02 '15 at 21:07