When using DSA for digital signatures, a modulus of at least 2048 bits is used.
Topic
Using the Digital Signature Algorithm
Applicable to
Official, Protected
History
Priority
must
Mar 2024
Removed
The existing controls relating to the use of DSA have been rescinded, as has its status as an AACA, following the recent withdrawal of Federal Information Processing Standard (FIPS) 186-4 by the United States’ National Institute of Standards and Technology (NIST). [ISM-0473, ISM-1630, ISM-1760]
Dec 2020
When using DSA for digital signatures, a modulus of at least 2048 bits is used.
Security control 0473 was amended to remove references to a modulus of 1024 bits.
Nov 2020
When using DSA for digital signatures, a modulus of at least 1024 bits, preferably 2048 bits, is used.
2015
Agencies using DSA for the approved use of digital signatures must use a modulus of at least1024 bits.
2010
Agencies using DSA, for the approved use of digital signatures, must use a modulus of at least 1024 bits.
2008
Agencies using DSA, for the approved use of digital signatures, must use a modulus of at least 1024 bits.