Made Base64 decoding constant-time (with regards to actual data byte contents).
[BearSSL] / src / rand /
drwxr-xr-x   ..
-rw-r--r-- 5434 aesctr_drbg.c
-rw-r--r-- 4205 hmac_drbg.c
-rw-r--r-- 3519 sysrng.c