[#!: full-line executeEmbeds,  phraseValueList = (("fout  fout)("backtrack  backtrack))
[#!: path_insertIn_fHand					(link  d_webWork  'fin Head_one.html')		fout  ;  
<TITLE> encryption-decryption instructions.html </TITLE>    
[#!: path_insertIn_fHand					(link  d_webWork  'fin Head_two.html')		fout  ;  
[#!: path_executeEmbedsInsertIn_fHand  (link  d_webWork  'Menu.html')  phraseValueList  ;  
[#!: path_executeEmbedsInsertIn_fHand  (link  d_webWork  'Menu software programming.html')  phraseValueList  ;  
[#!: path_insertIn_fHand					(link  d_webWork  'normalStatus.html'	)  fout  ;  
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Instructions for decrypting the INNS-IJCNN email list<BR>
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As RSA is not appropriate for encrypting modest-sized files, a standard hybrid [symmetric, public-private] approach was used, which is a nice compromise between [security, computational limits].  Because you used openssl, I have used it for the encryption.  The commands below are Linux bash, and I assume that the Windows command line commands would be the same?  That assumes that you replace the variables (start with "$") with the filepath (directory and filename) of where you want to store the files.  The quotation marks ensure that filepaths with spaces are properly treated.<BR>
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# 1.  First  decrypt the symmetric key using your private key :<BR>
 openssl rsautl -decrypt -inkey "$key_private" -in "$key_symmetric_encrypted" -out "$key_symmetric_decrypted"<BR>
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# 2.  Using the decrypted symmetric key, decrypt the medium sized encrypted file :<BR>
 openssl enc -d -aes-256-cbc -in "$f_encrypted"  -out "$f_decrypted" -pass file:"$key_symmetric_decrypted"<BR>
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# Here :<BR>
# $key_private = the filepath of your private key complement to the public key that you sent to me.<BR>
# $key_symmetric_encrypted = specify a filepath where you saved $key_symmetric_encrypted<BR>
# $key_symmetric_decrypted = specify a filepath where you want  $key_symmetric_decrypted (the result of step 1)<BR>
# $f_encrypted                    = specify a filepath where you saved $f_encrypted<BR>
# $f_decrypted                    = specify a filepath where you want  $f_decrypted (the result of step 2)<BR>
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Note : It is really easy for me to attach the wrong file (so many keys, versions).  So let me know if you have problems.<BR>
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How I did the encryptions<BR>
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The attached Linux bash file "openssl encrypt medium sized file.sh" describes precisely how I did the encryptions, and provides some references.  I use a bash file, which you could convert to the Windows equivalent, because it is easy to make mistakes (wrong [key, file] in wrong place, etc) even though the process is VERY simple!   It is also better than "talking about" the process in general terms.<BR>
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For now I've used 32byte encryption, which is crazy-too-small...<BR>
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I tested the code with my own temporary [public, private] keys :<BR>
$ bash "/media/bill/SWAPPER/bin/openssl encrypt medium sized file.sh"<BR>
diff  "$key_symmetric"   "$key_symmetric_decrypted" : (no output if correct)<BR>
diff  "$f_input"   "$f_decrypted" : (no output if correct)<BR>
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As you can see, there were no differences in either the symmetric key or $f_decrypted ("181006 IJCNN mass email list.txt"), so the encryptions worked properly.<BR>
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Last updated:<BR> 
13Apr2020 initial? (not sure wheenI would have to dig to find it)</FONT><BR>
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[#!: full-line executeEmbeds,  phraseValueList = (("fout  fout)("backtrack  backtrack))
[#!: path_executeEmbedsInsertIn_fHand  (link  d_webWork  'fin Footer.html')  phraseValueList  ;