kevinveenbirkenbach/split-secret
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Optimized decryption

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Kevin Veen-Birkenbach 2022-12-10 18:31:49 +01:00
parent 7a7fddee81
commit a00550e0b6
3 changed files with 40 additions and 26 deletions
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3
Readme.md
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@ -22,8 +22,9 @@ python scripts/main.py --mode decrypt --master-password "ewrwerwerew" &&
python scripts/main.py --mode decrypt --user "1" python scripts/main.py --mode decrypt --user "1"
python scripts/main.py --mode cleanup --user "1" && python scripts/main.py --mode decrypt --user "1" --user-password "O3ITMWXZED9FKYQ0PB2WNVRWSCSCYVXCD00PJ6GQ4MFPIUWBVDCYSSSX9ZDBW5QU" << END_OF_INPUTS python scripts/main.py --mode cleanup --file-types decrypted && python scripts/main.py --mode decrypt --user "1" --user-password "O3ITMWXZED9FKYQ0PB2WNVRWSCSCYVXCD00PJ6GQ4MFPIUWBVDCYSSSX9ZDBW5QU" << END_OF_INPUTS
2 2
YGC6FLI5FIFL4WV4JPZZI7RVOZTWLROCLY4HVGDMWWSTAIQJTLUQK1VBBY0E24PN
END_OF_INPUTS END_OF_INPUTS
``` ```
# Requirements to know # Requirements to know

4
scripts/classes/Decryption.py
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@ -84,8 +84,8 @@ class Decryption(AbstractSplittedSecret):
def getPasswordShare(self): def getPasswordShare(self):
return self.user_data['groups'][str(self.getDecryptersGroupName())] return self.user_data['groups'][str(self.getDecryptersGroupName())]
def getNeededCoDecryptersAmount(self): def getNeededDecryptersAmount(self):
return self.needed_decrypters_amount -1 return self.needed_decrypters_amount
def loadTxtFile(self,file_path): def loadTxtFile(self,file_path):
return Path(file_path).read_text() return Path(file_path).read_text()

51
scripts/main.py
View File

@ -10,14 +10,24 @@ cleanup = Cleanup()
def clean_exit(): def clean_exit():
print("Cleaning up.") print("Cleaning up.")
try:
cleanup.cleanupFiles(AbstractSplittedSecret.TYPE_DECRYPTED) cleanup.cleanupFiles(AbstractSplittedSecret.TYPE_DECRYPTED)
print("Leaving program. Goodby :)") except:
exit()
pass pass
print("Leaving program.")
exit()
def dirty_exit():
print("ATTENTION: SECURITY RISK !!!\nPROGRAM DIDN'T CLEAN UP DECRYPTED DATA. \nDECRYPTED DATA EXISTS AND CAN BE READ BY EVERYBODY!")
print("TO REMOVE DECRYPTED DATA EXECUTE:\nmain.py --mode cleanup --file-types " + AbstractSplittedSecret.TYPE_DECRYPTED)
print("Leaving program.")
exit()
try: try:
if __name__ == '__main__': if __name__ == '__main__':
parser = argparse.ArgumentParser() parser = argparse.ArgumentParser()
parser.add_argument('--mode',type=str, dest='mode',required=True,choices=['cleanup','encrypt','decrypt']) parser.add_argument('--mode',type=str, dest='mode',required=True,choices=['cleanup','encrypt','decrypt'])
parser.add_argument('--file-types',type=str, dest='file_types',required=False,choices=[AbstractSplittedSecret.TYPE_DECRYPTED, AbstractSplittedSecret.TYPE_ENCRYPTED])
parser.add_argument('--amount',type=int, dest='amount_of_secret_holders',required=False,choices=AbstractSplittedSecret.getCoSecretHoldersRange()) parser.add_argument('--amount',type=int, dest='amount_of_secret_holders',required=False,choices=AbstractSplittedSecret.getCoSecretHoldersRange())
parser.add_argument('--quota', type=int, dest='decryption_quota', choices=range(1,101),required=False) parser.add_argument('--quota', type=int, dest='decryption_quota', choices=range(1,101),required=False)
parser.add_argument('--master-password',type=str, dest='master_password',required=False) parser.add_argument('--master-password',type=str, dest='master_password',required=False)
@ -26,17 +36,22 @@ try:
parser.add_argument('--add-user-information',type=bool, dest='add_user_information', default=False, required=False, action=argparse.BooleanOptionalAction) parser.add_argument('--add-user-information',type=bool, dest='add_user_information', default=False, required=False, action=argparse.BooleanOptionalAction)
args = parser.parse_args() args = parser.parse_args()
print("Splitted Secret Interface started.") print("Application started.")
print("Selected Mode: " + args.mode) print("Selected Mode: " + args.mode)
if args.mode == 'cleanup': if args.mode == 'cleanup':
print("Cleaning up.")
if args.file_types is None:
if args.user is None: if args.user is None:
print("Delete all files.") print("Deleting all encrypted and decrypted files.")
cleanup.deleteAll() cleanup.deleteAll()
clean_exit() clean_exit()
print("Delete files for user <<" + str(args.user) + ">>"); print("Deleting all files which aren't related to user: " + str(args.user));
cleanup.cleanupForUser(args.user) cleanup.cleanupForUser(args.user)
clean_exit() clean_exit()
print("Deleting all " + args.file_types + " files.")
cleanup.cleanupFiles(args.file_types)
clean_exit()
if args.mode == 'decrypt': if args.mode == 'decrypt':
decrypt = Decryption() decrypt = Decryption()
@ -64,22 +79,23 @@ try:
except Exception as error: except Exception as error:
print("An error occured. Propably you passed a wrong password :( The error is: " + str(error)) print("An error occured. Propably you passed a wrong password :( The error is: " + str(error))
clean_exit() clean_exit()
print("Contact the following persons and tell them that you need help to encrypt the data: \n") print("\nContact the following persons and request their password share: \n")
for contact_id in decrypt.user_data['contacts']: for contact_id in decrypt.user_data['contacts']:
print("user_id: " + contact_id) print("user_id: " + contact_id)
for label in decrypt.user_data['contacts'][contact_id]: for label in decrypt.user_data['contacts'][contact_id]:
print(label + ": " + decrypt.user_data['contacts'][contact_id][label]) print(label + ": " + decrypt.user_data['contacts'][contact_id][label])
print()
while True: while True:
print("\nReset password shares.\n")
decrypt.resetDecrypterIds() decrypt.resetDecrypterIds()
try: try:
person_counter = 1 password_shares_count = 1
while person_counter <= decrypt.getNeededCoDecryptersAmount(): while password_shares_count < decrypt.getNeededDecryptersAmount():
print("The following user id's are in the decryption list: " + str(decrypt.getDecrypterIds())) print(str(password_shares_count) + " password shares had been added.")
print("You need at least <<" + str(decrypt.getNeededCoDecryptersAmount()) +">> other person to decrypt the secret.") print("Password shares for the the users " + str(decrypt.getDecrypterIds()) + " been added. ")
print("Type in the user id of another encrypter:") print("You need to add " + str((decrypt.getNeededDecryptersAmount()-password_shares_count)) +" more password shares.")
print("\nType in the user id of another decrypter:")
decrypt.addDecrypterId(int(input())) decrypt.addDecrypterId(int(input()))
person_counter += 1 password_shares_count += 1
break break
except Exception as error: except Exception as error:
print("The following error occured <<" + str(error) + ">> :( \n Try again :)") print("The following error occured <<" + str(error) + ">> :( \n Try again :)")
@ -92,9 +108,8 @@ try:
decrypt.resetPasswordShare() decrypt.resetPasswordShare()
co_decrypter_ids = decrypt.getCoDecrypterIds() co_decrypter_ids = decrypt.getCoDecrypterIds()
for co_decrypter_id in decrypt.getCoDecrypterIds(): for co_decrypter_id in decrypt.getCoDecrypterIds():
print("Execute this script for user: " + str(co_decrypter_id) + ".") print("Type in the password share for: \n")
print("Type in the password share.\n") print("FOR PASSWORD GROUP: " + decrypt.getDecryptersGroupName())
print("\nFOR PASSWORD GROUP: " + decrypt.getDecryptersGroupName())
print("FOR USER: " + str(co_decrypter_id)) print("FOR USER: " + str(co_decrypter_id))
print("PASSWORD SHARE IS: ") print("PASSWORD SHARE IS: ")
decrypt.addPasswordShare(co_decrypter_id, input()) decrypt.addPasswordShare(co_decrypter_id, input())
@ -105,7 +120,7 @@ try:
break; break;
except: except:
print("An unexpected error occured: \n" + traceback.format_exc()) print("An unexpected error occured: \n" + traceback.format_exc())
clean_exit() dirty_exit()
print("Decrypting accumulated file...") print("Decrypting accumulated file...")
decrypt.setUserPassword(args.master_password) decrypt.setUserPassword(args.master_password)
decrypt.decryptAccumulatedFile() decrypt.decryptAccumulatedFile()
@ -128,6 +143,4 @@ try:
clean_exit() clean_exit()
except KeyboardInterrupt: except KeyboardInterrupt:
print("Program interrupted by user.") print("Program interrupted by user.")
except:
print("An unexpected error occured: \n" + traceback.format_exc())
clean_exit() clean_exit()