Break

Break means

{Quote|[t]o successfully perform cryptanalysis and thus succeed in decrypting data or performing some other cryptographic function, without initially having knowledge of the key that the function requires.

This term applies to encrypted data or, more generally, to a cryptographic algorithm or cryptographic system. Also, while the most common use is to refer to completely breaking an algorithm, the term is also used when a method is found that substantially reduces the work factor.