Lost my laptop in Mexico and I didn't have my password here backed up. I threw together this code today during lunch, it is in applescript, with resources in objectivec.
It functions as a NXT messenger for Mac.
Should I change this to an ECC algorithm?
I am adapting this code without the encryption to act as a raw data uploader, a file will be converted to binary, then hex and truncated at 900 character intervals to be uploaded to the blockchain in segments.
script AppDelegate
property parent : class "NSObject"
property textField : missing value
property secretPhrase : missing value
property messageFee : missing value
property accountReceiver : missing value
property keyReceiver : missing value
set rsaPrivate to "/Library/rsaprivkey.pem"
set rsaPublic to "/Library/rsapubkey.pub"
tell application "Finder"
if not exists rsaPrivate as POSIX file then
do shell script "openssl genrsa -out " & rsaPrivate & " 16384"
end if
if not exists rsaPublic as POSIX file then
do shell script "openssl rsa -in " & rsaPrivate & " -pubout > " & rsaPublic
end if
end tell
set rsapubkey to (do shell script "cat " & quoted form of rsaPublic) as text
tell application "Finder"
set theName to name of file 1
end tell
set (stringValue() of text field "field" ) of window "main" to rsapubkey
on buttonClicked_(sender)
set feeMessage to (stringValue() of messageFee)
set receiveraccount to (stringValue() of accountReceiver)
set textCipher to "/Library/ciphertext.txt"
-- write receiver's public key to a file--
set rpubPath to "/Library/pubreceiver.key"
set rpubKey to (stringValue() of keyReceiver)
tell application "System Events"
set file_ref to open for access rpubPath with write permission
set eof of file_ref to 0
write ((stringValue() of keyReceiver) as text) to file_ref
close access file_ref
end tell
-- write receiver's public key to a file--
--write plaintext to a file--
set textPlain to "/Library/plaintext.txt"
set message to (stringValue() of textField)
tell application "System Events"
set file_ref2 to open for access textPlain with write permission
set eof of file_ref2 to 0
write ((stringValue() of textField) as text) to file_ref2
close access file_ref2
end tell
--write plaintext to a file--
--encrypt plaintext to ciphertext--
do shell script "openssl rsautl -encrypt -pubin -inkey " & RpubPath & " -in " & textPlain & " -out " & textCipher
set ciphertext to (do shell script "cat " & textCipher)
--encrypt plaintext to ciphertext--
--cipher to hex
set thelist to "0123456789ABCDEF"
set hexvalue to ""
repeat with i in ciphertext
set theAscii to ASCII number of i
set hexvalue to hexvalue & character (theAscii div 16 + 1) of thelist & character (theAscii mod 16 + 1) of thelist
end repeat
set finalText to (hexvalue as text)
--cipher to hex
set messageLength to the length of finalText
set var_a to messageLength / 6
set var_b to var_a / 150
set iterations to round var_b rounding up
set counter to 1
repeat iterations times
if messageLength is less than 900 then
set charnumberalpha to 1
set charnumberbeta to messageLength
else
set charmaximum to messageLength
if counter is equal to iterations then
set charnumberalpha to 1 + 900 * (counter - 1)
set charnumberbeta to charmaximum
else
set charnumberalpha to 1 + 900 * (counter - 1)
set charnumberbeta to 900 + 900 * (counter -1)
end if
end if
set messageFinal to (text charnumberalpha thru charnumberbeta of finalText)
set urlMassive to "http://localhost:7874/nxt?requestType=sendMessage&secretPhrase=" & (stringValue() of secretPhrase) & "&recipient=" & (stringValue() of accountReceiver) & "&fee=" & (stringValue() of messageFee) & "&deadline=1440" & "&message=" & messageFinal
tell application "Safari"
launch
set the URL of document iterations to urlMassive
end tell
set counter to counter + 1
end repeat
