NIST：DRAFT Recommendation for Block Cipher Modes of Operation: Methods for Format-Preserving Encryption

下記の文書が公表されている。

　DRAFT Recommendation for Block Cipher Modes of Operation: Methods for Format-Preserving Encryption
　SP 800-38 G
　NIST: July 8, 2013
　http://csrc.nist.gov/publications/drafts/800-38g/sp800_38g_draft.pdf