From: "EXTERNAL D Sharmila (Iwave, RBEI/PAC-PF)" <external.Sharmila.D@in.bosch.com>
To: "dm-crypt@saout.de" <dm-crypt@saout.de>
Subject: [dm-crypt] IV generation in dm-crypt using dmsetup
Date: Tue, 28 Jan 2020 03:37:38 +0000 [thread overview]
Message-ID: <afabf95c39f18ca62d7c453755e438ba42b76322.camel@bosch.com> (raw)
Hi team,
I am able to successfully encrypt custom device physical
partition using dmsetup utility. I have used dm-crypt and dm-integrity
for the same. I have one query related to IV generation of dm-crypt.
Query:
Whether Random number generator used to generate IV, generates
same IV repeatedly or unique IV will be generated ? How the IV
generation handled in dm-crypt ?
The commands I used to create dm-integrity and dm-crypt is as below
dmsetup create test-integrity --table '0 14240 integrity /dev/mmcblk0p5
0 32 J 1
internal_hash:hmac(sha256):30313233343536373839414243444546303132333435
36373839414243444546'
dmsetup create test-integrity-crypt --table '0 14240 crypt aes-cbc-
essiv:sha256 :32:user:test-key 0 /dev/mapper/test-integrity 0'
Please give your valuable response for the above query.
Regards,
Sharmila
reply other threads:[~2020-01-28 3:44 UTC|newest]
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