RFC Errata
RFC 6234, "US Secure Hash Algorithms (SHA and SHA-based HMAC and HKDF)", May 2011
Source of RFC: IETF - NON WORKING GROUPArea Assignment: sec
Errata ID: 5240
Status: Reported
Type: Editorial
Publication Format(s) : TEXT
Reported By: Yeong-u Kim (K.)
Date Reported: 2018-01-21
Section 6 says:
6.1. SHA-224 and SHA-256 Initialization For SHA-224, the initial hash value, H(0), consists of the following 32-bit words in hex: H(0)0 = c1059ed8 H(0)1 = 367cd507 H(0)2 = 3070dd17 H(0)3 = f70e5939 H(0)4 = ffc00b31 H(0)5 = 68581511 H(0)6 = 64f98fa7 H(0)7 = befa4fa4
It should say:
6.1. SHA-224 and SHA-256 Initialization For SHA-224, the initial hash value, H(0), consists of the following 32-bit words in hex. These words were obtained by taking the second 32 bits of the fractional parts of the square roots of the ninth through sixteenth prime numbers. H(0)0 = c1059ed8 H(0)1 = 367cd507 H(0)2 = 3070dd17 H(0)3 = f70e5939 H(0)4 = ffc00b31 H(0)5 = 68581511 H(0)6 = 64f98fa7 H(0)7 = befa4fa4
Notes:
The explanation for the way in which the initial hash value of SHA-224 was obtained is missing.