Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Bitcoin uses RIPEMD160 on top of SHA256. Is its sole purpose to make public key address shorter or does it strengthen security in any way?
RIPEMD160 was designed in the open academic community and not like SHA2 by a NSA competition... one may see this as security advantage.
160bit hashes do also have less space requirements (then sha256) on the blockchain as well as in indexes, etc.
Required, but never shown