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Description of problem:

Backport FIPS keysize fixes from RHEL8
- Fix Minimum RSA key size to 2048 (was 3072)
- Fix ECDSA key size check

Version-Release number of selected component (if applicable):
libreswan-3.25-8.1.el7_7.x86_64.rpm

How reproducible:
- RSA keys in FIPS mode needed to be 3072 in libreswan versions < 3.32. 
- For libreswan >= 3.32, FIPS mode will accept 2048 bit keys.
- In non-fips mode, 2048 bit RSA keys are always accepted.

Steps to Reproduce:
1. Key size in FIPS is expected to be 3072 or above. 
2.
3.

Actual results:
# /usr/sbin/ipsec  auto --add con-name
Warning: ignored obsolete keyword 'plutorestartoncrash'
036 FIPS: Rejecting cert with key size 2048 which is under 3072
036 Failed to add connection "con-name" with invalid "left" certificate

Expected results:
Key size less than 3072 like 2048 should be accepted

Additional info:

Before granting qa_acks I need to understand the way this issue is fixed.

1. Fixed libreswan will allow 2048 bit RSA keys in FIPS mode, correct?

2. What is "Fix ECDSA key size check" from the description?

Requesting Zstream

Jaroslav, can you run your magic to create the Zstream clones ?

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (libreswan bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:4067