TIL BoringSSL uses constant-time base64 decoder https://github.com/google/boringssl/commit/536036abf46a13e52a43a92f6e44a87404e8755f#diff-c7192c0c5ad80a961243b0ad5c434176 …
(I have an attempt in JavaScript, but nothing is guaranteed to be constant-time with JavaScript: https://github.com/StableLib/stablelib/blob/master/packages/base64/base64.ts …)
I believe @DefuseSec and @CiPHPerCoder had one for PHP.
Libsodium’s base64 codec is also constant time.
3:26 PM - 6 Dec 2017
from Paddington, London
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