bn/bn_{div|shift}.c: introduce fixed-top interfaces.
Fixed-top interfaces tolerate zero-padded inputs and facilitate constant-time-ness. bn_div_fixed_top tolerates zero-padded dividend, but not divisor. It's argued that divisor's length is public even when value is secret. [extended tests] Reviewed-by: Paul Dale <paul.dale@oracle.com> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7589)
parent
3da2e9c4
Please register or sign in to comment