How to securely hash sensitive data and make the hash public, while preventing an attack by someone who know the structure or some part of the data?

In a nutshell, I need:

to hash a file and to make this hash public, to be able to prove data integrity when sharing the data privately with a trusted third party.
to choose the right hashing method to prevent plausible brute force attacks… Continue reading How to securely hash sensitive data and make the hash public, while preventing an attack by someone who know the structure or some part of the data?

Does "row-level security" actually serve a security purpose?

Row-level security is often an industry requirement in secure environments, such as those dealing with payment cards.
It’s supported by most major relational databases, including PostgreSQL, Microsoft SQL Server and Oracle. It works by int… Continue reading Does "row-level security" actually serve a security purpose?