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NIST's Computer Security Division is seeking input on the development of standards for stateful hash-based signatures, including XMSS (see IETF RFC 8391).
"A Data Structure for Integrity Protection with Erasure Capability" is a draft white paper available for public comment until August 3, 2018. It describes a "block matrix" data structure .
In 2005 Prof. Xiaoyun Wang announced a differential attack on the SHA-1 hash function. NIST found that the attack was practical, and announced plans for transitioning to SHA-2 algorithms and development of SHA-3.
Researchers have recently announced they have discovered a new way to break a number of cryptographic hash algorithms. Click here to read NIST's brief comments on recent cryptanalytic attacks on secure hashing...