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Dec 26, 2018 at 15:13 comment added Xen2050 @MattReyer I've read general good advice for linux is to read a few random bytes (32, 64, 128, 256, depends on the cipher & perhaps key processing) from /dev/random on a running well-used system (an embedded system with virtually no input may have poor "randomness"). Cryptsetup's FAQ 2.12 What are the security requirements for a key read from file? has head -c 256 /dev/random > keyfile
Dec 26, 2018 at 14:52 comment added 371273 Could you point to some resources for creating a symmetric keyfile with gpg?
May 11, 2018 at 5:59 history edited Xen2050 CC BY-SA 4.0
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May 11, 2018 at 5:40 history answered Xen2050 CC BY-SA 4.0