"Fossies" - the Fresh Open Source Software Archive

Member "cryptsetup-2.4.3/tests/generators/generate-luks2-pbkdf2-leftover-params-0.img.sh" (24 Jul 2021, 1674 Bytes) of package /linux/misc/cryptsetup-2.4.3.tar.xz:

As a special service "Fossies" has tried to format the requested source page into HTML format using (guessed) Bash source code syntax highlighting (style: standard) with prefixed line numbers and code folding option. Alternatively you can here view or download the uninterpreted source code file. 
    1 #!/bin/bash
    2 
    3 . lib.sh
    4 
    5 #
    6 # *** Description ***
    7 #
    8 # generate primary header with luks2 keyslot kdf object
    9 # having left over params.
   10 #
   11 # secondary header is corrupted on purpose as well
   12 #
   13 
   14 # $1 full target dir
   15 # $2 full source luks2 image
   16 
   17 function prepare()
   18 {
   19     cp $SRC_IMG $TGT_IMG
   20     test -d $TMPDIR || mkdir $TMPDIR
   21     read_luks2_json0 $TGT_IMG $TMPDIR/json0
   22     read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0
   23     read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr1
   24 }
   25 
   26 function generate()
   27 {
   28     # add keyslot 1 to second digest
   29     obj_len=$(jq -c -M '.keyslots."2".kdf | length' $TMPDIR/json0)
   30     json_str=$(jq -r -c -M '.keyslots."2".kdf.type = "argon2i" | .keyslots."2".kdf.iterations = 1001 | .keyslots."2".kdf.hash = "sha256"' $TMPDIR/json0)
   31     test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
   32 
   33     write_luks2_json "$json_str" $TMPDIR/json0
   34 
   35     merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
   36     erase_checksum $TMPDIR/area0
   37     chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
   38     write_checksum $chks0 $TMPDIR/area0
   39     write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
   40     kill_bin_hdr $TMPDIR/hdr1
   41     write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
   42 }
   43 
   44 function check()
   45 {
   46     read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
   47     local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
   48     test "$str_res1" = "VACUUM" || exit 2
   49 
   50     read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
   51     chks_res0=$(read_sha256_checksum $TGT_IMG)
   52     test "$chks0" = "$chks_res0" || exit 2
   53     new_obj_len=$(jq -c -M '.keyslots."2".kdf | length' $TMPDIR/json_res0)
   54     test $((obj_len+2)) -eq $new_obj_len || exit 2
   55 }
   56 
   57 function cleanup()
   58 {
   59     rm -f $TMPDIR/*
   60     rm -fd $TMPDIR
   61 }
   62 
   63 test $# -eq 2 || exit 1
   64 
   65 TGT_IMG=$1/$(test_img_name $0)
   66 SRC_IMG=$2
   67 
   68 prepare
   69 generate
   70 check
   71 cleanup