sys-fs/cryptsetup should have +argon2 USE flag by default in order to support LUKS2 header type out-of-the-box. Now default built-in hash type for LUKS2 is argon2 but argon2 USE flag is disabled by default.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=3349b10693437e70bdeb9c89065149bd00299def commit 3349b10693437e70bdeb9c89065149bd00299def Author: Lars Wendler <polynomial-c@gentoo.org> AuthorDate: 2017-12-15 22:28:22 +0000 Commit: Lars Wendler <polynomial-c@gentoo.org> CommitDate: 2017-12-15 22:28:37 +0000 sys-fs/cryptsetup: Enable argon2 USE flag by default. Closes: https://bugs.gentoo.org/641182 Package-Manager: Portage-2.3.18, Repoman-2.3.6 sys-fs/cryptsetup/cryptsetup-2.0.0.ebuild | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=7f33641b7a4558197a92515f795cfb395e386472 commit 7f33641b7a4558197a92515f795cfb395e386472 Author: Thomas Deutschmann <whissi@gentoo.org> AuthorDate: 2017-12-15 22:40:23 +0000 Commit: Thomas Deutschmann <whissi@gentoo.org> CommitDate: 2017-12-15 22:40:23 +0000 sys-fs/cryptsetup: Enable argon2 USE flag by default. Bug: https://bugs.gentoo.org/641182 Package-Manager: Portage-2.3.18, Repoman-2.3.6 sys-fs/cryptsetup/cryptsetup-2.0.0-r1.ebuild | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)}