[rfc-dist] RFC 8937 on Randomness Improvements for Security Protocols

rfc-editor at rfc-editor.org rfc-editor at rfc-editor.org
Sat Oct 17 05:33:43 PDT 2020


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        RFC 8937

        Title:      Randomness Improvements for Security Protocols 
        Author:     C. Cremers, 
                    L. Garratt,
                    S. Smyshlyaev,
                    N. Sullivan,
                    C. Wood
        Status:     Informational
        Stream:     IRTF
        Date:       October 2020
        Mailbox:    cremers at cispa.saarland, 
                    lgarratt at cisco.com, 
                    svs at cryptopro.ru,
                    nick at cloudflare.com, 
                    caw at heapingbits.net
        Pages:      9
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-irtf-cfrg-randomness-improvements-14.txt

        URL:        https://www.rfc-editor.org/info/rfc8937

        DOI:        10.17487/RFC8937

Randomness is a crucial ingredient for Transport Layer Security (TLS)
and related security protocols.  Weak or predictable
"cryptographically secure" pseudorandom number generators (CSPRNGs)
can be abused or exploited for malicious purposes. An initial entropy
source that seeds a CSPRNG might be weak or broken as well, which can
also lead to critical and systemic security problems. This document
describes a way for security protocol implementations to augment
their CSPRNGs using long-term private keys. This improves randomness
from broken or otherwise subverted CSPRNGs.

This document is a product of the Crypto Forum Research Group (CFRG)
in the IRTF.


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