File formats:

Status:

PROPOSED STANDARD

Updates:

RFC 4419

Authors:

L. Velvindron
M. Baushke

Stream:

IETF

Source:

curdle (sec)

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC8270

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Abstract

The Diffie-Hellman (DH) Group Exchange for the Secure Shell (SSH) transport-layer protocol specifies that servers and clients should support groups with a minimum modulus group size of 1024 bits. Recent security research has shown that the minimum value of 1024 bits is insufficient to protect against state-sponsored actors and any organization with enough computing resources. This RFC updates RFC 4419, which allowed for DH moduli less than 2048 bits; now, 2048 bits is the minimum acceptable group size.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.