A 224-bit One-way Hash Function: SHA-224
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From: The IESG <firstname.lastname@example.org> To: IETF-Announce <email@example.com> Cc: Internet Architecture Board <firstname.lastname@example.org>, RFC Editor <email@example.com>, pkix mailing list <firstname.lastname@example.org>, pkix chair <email@example.com> Subject: Document Action: 'A 224-bit One-way Hash Function: SHA-224' to Informational RFC The IESG has approved the following document: - 'A 224-bit One-way Hash Function: SHA-224 ' <draft-ietf-pkix-sha224-02.txt> as an Informational RFC This document is the product of the Public-Key Infrastructure (X.509) Working Group. The IESG contact persons are Steve Bellovin and Tim Polk. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-pkix-sha224-02.txt
Technical Summary This draft specifies a 224-bit cryptographic hash function. 224 bits is the obvious choice to match triple-DES in strength against brute-force attacks. At least two independent implementations exist and agree on the test vectors in this document. Working Group Summary Since NIST has already specified SHA-224, this was the only reasonable choice. Protocol Quality Steve Bellovin has reviewed this document for the IESG. RFC Editor Note Please make two changes. 1. Please correct typos in the Abstract. OLD: ... A SHA-224 is based on SHA-256, but it uses an different ... NEW: ... SHA-224 is based on SHA-256, but it uses a different ... 2. The Introduction has two paragraphs. Please add an additional paragraph at the end of the Introduction. NEW: This document makes the SHA-224 one-way hash function specification available to the Internet community, and it publishes the object identifiers for use in ASN.1-based protocols.