Bug 78550
| Summary: | aes encryption option is not available | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Michael Lee Yohe <michael> |
| Component: | util-linux | Assignee: | Elliot Lee <sopwith> |
| Status: | CLOSED DUPLICATE | QA Contact: | Ben Levenson <benl> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 8.0 | CC: | sam |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2002-12-07 14:28:34 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Michael Lee Yohe
2002-11-25 17:47:11 UTC
Further, I force injected the "cipher-aes" module: # modprobe cipher-aes # losetup -e aes /dev/loop0 /home/myohe/test.img Unsupported encryption type aes # losetup -e cipher-aes /dev/loop0 /home/myohe/test.img Unsupported encryption type cipher-aes # losetup -e AES /dev/loop0 /home/myohe/test.img Unsupported encryption type AES I should finish my thoughts before hitting "submit.." # dmesg | grep cryptoapi cryptoapi: loaded cryptoapi: Registered aes-ecb (0) cryptoapi: Registered aes-cbc (65536) cryptoapi: Registered aes-cfb (131072) cryptoapi: Registered aes-ctr (262144) cryptoapi: Registered aes-rtc (524288) # losetup -e aes-rtc /dev/loop0 /home/myohe/test.img Unsupported encryption type aes-rtc # losetup -e aes-ecb /dev/loop0 /home/myohe/test.img Unsupported encryption type aes-ecb # losetup -e aes-cfb /dev/loop0 /home/myohe/test.img Unsupported encryption type aes-cfb # losetup -e aes-ctr /dev/loop0 /home/myohe/test.img Unsupported encryption type aes-ctr # losetup -e aes-cbc /dev/loop0 /home/myohe/test.img Unsupported encryption type aes-cbc And while it's open (along the same lines); how come it only supports XOR which is slow and DES which doesn't work anyway: losetup -e des /dev/loop0 /file Password: Init (up to 16 hex digits): ioctl: LOOP_SET_STATUS: Invalid argument Lets take DES out as everyone agrees it is too weak and doesn't work anyway, and lets put at least one decent one in by default; AES, IDEA or something, and even better would be to be able to use loadable encryption modules. The DES problem is related to Bug 56698 and includes a semi-howto on what to do to get encrypted filesystems to work under Red Hat Linux (albeit a non-packaged method). I filed Bug 78544 against the kernel - Arjan correctly informed me that the _kernel_ has loopback encryption support. However, the Red Hat Linux distribution itself _does not_ have the support. I will modify Bug 78544 accordingly to reference the distribution's lack of a method EVEN when the man pages (documentation) say otherwise. Does this mean I can just get the src.rpm to losetup and util-linux packages and add to the .spec file the patches from http://www.kernel.org/pub/linux/kernel/crypto/v2.4/ and expect it to work? If I understand the problem correctly, and it is so, then I am happy to put together and updated src.rpm for rawhide and/or redhat update. Sam [Yes, and I meant XOR was fast, not slow] Well.... I derived the patch for the util-linux package but it doesn't apply cleanly when combined with all the other redhat linux-util patches part of the .src.rpm And not knowing the purposes behind many of the applied patches I can't tell how far from a working crypto losetup we are; or if or how much still needs patching. So I'll have to leave it to the util-linux package maintainers to sort out what is still missing and fix it up. |