def genAndPrintKeys(curbtc, inputamt, numCopies, password, lcd):
remPubKey = False
remPrivKey = False
#open serial number file which tracks the serial number
snumfile = open('serialnumber.txt', 'r+')
snum = snumfile.read()
#open the printer itself
printer = Adafruit_Thermal("/dev/ttyAMA0", 19200, timeout=5)
#load a blank image of the paper wallet with no QR codes or keys on it which we will draw on
finalImg = Image.open("btc-wallet-blank.bmp")
lcd_display(lcd, "Generating", "address")
#this actually generates the keys. see the file genkeys.py or genkeys_forget.py
import genkeys as btckeys
btckeys.genKeys()
if btckeys.keysAreValid == False:
printer.write("Error: The generated keys (public/private) are not the correct length. Please try again.")
#import wallet_enc as WalletEnc
#encrypt the keys if needed
#if(password != ""):
# privkey = WalletEnc.pw_encode(btckeys.privkey, password)
#else:
privkey = btckeys.privkey
rememberKeys = False
sqlitePubKey = ""
sqlitePrivKey = ""
strToWrite = ""
if remPubKey:
strToWrite = "\nPublic Key: "+btckeys.pubkey
sqlitePubKey = btckeys.pubkey
rememberKeys = True
if remPrivKey:
strToWrite = strToWrite + "\nPrivate Key: "+privkey
sqlitePrivKey = privkey
rememberKeys = True
if rememberKeys == True:
#store it to the sqlite db
con = None
try:
con = sqlite3.connect('/home/pi/build/Piper/keys.db3')
con.execute("INSERT INTO keys (serialnum, public, private) VALUES (?,?,?)", (snum, sqlitePubKey, sqlitePrivKey))
except sqlite3.Error, e:
print "Error %s:" % e.args[0]
sys.exit(1)
finally:
if con:
con.commit()
con.close()
#store it in a flat file on the sd card
f = open("/boot/keys.txt", 'a+')
strToWrite = "Serial Number: " + snum + strToWrite
f.write(strToWrite);
f.write("\n---------------------------------\n")
f.close()
leftMarkText = "Serial Number: "+snum
lcd_display(lcd, "Transferring", "Bitcoins!")
usd = 1.0/float(curbtc)
returnamt = usd*float(inputamt)
#electrum -w /home/pi/.electrum/wallets/default_wallet -f 0.0001 payto 1PPyJbKyMtKjiMPJcm4dYbRdy9BcW3i3j2 0.0030
transfer_cmd = ['electrum', '-w', '/home/pi/.electrum/wallets/default_wallet', '-f', '0.0001', 'payto', str(btckeys.pubkey), str(returnamt)]
tx_hash = Popen(transfer_cmd, stdout=PIPE).communicate()[0]
lcd_display(lcd, "Printing", "receipt")
#do the actual printing
for x in range(0, numCopies):
#piper.print_keypair(pubkey, privkey, leftBorderText)
print_keypair(btckeys.pubkey, privkey, leftMarkText, curbtc, inputamt, tx_hash)
if numCopies > 1 and x < numCopies-1:
time.sleep(30)