1. open a terminal window and type "cat " (notice the space after the "t", it's important, and don't type the quotes), DON'T hit return yet
2. drag and drop the file into the terminal window so it will enter its path for you
3. type " | openssl base64 -d" and hit return
This step returned: Dads-iMac:~ myname$
...close the terminal window and open a new one, and repeat above but for the second part, add this instead:
3. type " | openssl base64 -d | xxd -c 32" and hit return
and see what that gets you
Although there was no output in the first step I gave the above a try anyway. The result continued to be: Dads-iMac:~ myname$
If that doesn't work, try this step three instead:
3. " | while read x ; do echo "$x" | sed 's/.\{64,64\}/& /g' | tr ' ' '\n' | openssl base64 -d ; done | xxd -c 32"
This time I got:
0000000: 7c91 eb42 735d 9849 47d9 b5c5 1615 38e9 9196 c230 e07e 957a b046 b7d6 f971 a6cf |..Bs].IG.....8....0.~.z.F...q..
0000020: a6f9 054a b5d2 1525 283f 55d1 84e8 69bf 9610 332b d2fb 1221 5928 feb0 6614 b841 ...J...%(?U...i...3+...!Y(..f..A
0000040: 0e68 6515 af55 b818 1b5c 33cd af65 ffc9 fada a3af dd69 34e5 55d7 560d 6883 6b66 .he..U...\3..e.......i4.U.V.h.kf
0000060: 1823 ee21 ad89 fa7e 6893 029a fce3 b2d7 f50e 0d6c 0f01 33e5 156e c95d d075 6fe8 .#.!...~h..........l..3..n.].uo.
0000080: 1b55 63a7 6c45 5454 2d1d 896a c8ad fee2 0c5e c199 f61d 466b 61ae 9a30 a8be 5cd1 .Uc.lETT-..j.....^....Fka..0..\.
00000a0: a795 fd0c a0c9 d169 7e85 32b1 d9e2 dfba 839a 6054 3d6f 02bb 1f8f 8547 f316 d20e .......i~.2.......`T=o.....G....
00000c0: 46ea 9eae a44f e4f4 9b37 1ac1 4b1a 6543 d297 8d20 b187 41e4 dcc2 3b33 4f86 6231 F....O...7..K.eC... ..A...;3O.b1
00000e0: 134d 2a5a e97e e1af dd3e 62b1 30ac a3fe 1619 a5d6 0944 030d 05fc 62d5 1009 993c .M*Z.~...>b.0........D....b....<
Dads-iMac:~ myname$
