Vynikající článek od Globalsign.
SHA-256 je už vcelku aktuální.
SHA-2 is a set of cryptographic hash functions which includes SHA-224, SHA-256, and SHA-512. The 256 in SHA-256 represents the bit size of the hash output or digest when the hash function is performed. Not all software supports every digest size within the SHA-2 family. This article focuses specifically on SHA-256 and its compatibility with various software platforms and operating systems. As a general rule, SHA-256 is supported on OS X 10.5+ and Windows XP SP3+.
Read our Hash Functions article for a better understanding of how they work and how they are used to validate certificates and documents.
For GlobalSign’s policy on SHA-256 issuance as well as important dates set by Microsoft, Google, and Mozilla, please read the SHA-256 Rollout article.