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SkylarkSafe is a simple encryption / decryption program especially useful for editing securely encrypted text files. Free for personal use.

Right click on this link (and choose "Save link as...") to save the program to your hard drive. version 2.02 for Windows Desktop (Size 2.18MB)

File (Sha256) hash for this ZIP file download is: 0x5da9e677b68d782b0eb3f185baf811b688b85f7e4503b31d2b2ff9e4670f1685

and the hash for the .exe file itself is: 0x24d5bae88ff634118649fb13b523abdbfa2d31bbaa6e4755884fbe635ddbe0ed

Since this is a new program, it may be flagged as unsafe by your antivirus software. If so, select 'View Details' and 'Trust' in your security options.

This program (as with all Skylark software) does not need to be installed, so it can be simply copied to a memory stick or folder and run from there.
For added security, run the program while disconnected from all networks and from the Internet.

SkylarkSafe does not use the registry, instead it creates a simple preferences file in the AppData folder.

An encrypted version of your Salt is saved in the preferences file, but your password is never saved, so make sure to remember your password.
You should save a copy of your Salt preferably in an offline memory stick.

SkylarkSafe uses AES (CFB) 128 bit encryption (re Vincent Rijmen and Joan Daemen, via Apache License 2.0, see with salted and hashed passwords with an optional user specific 32 character salt value. It can encrypt and decrypt any file, but is specifically useful to edit and save secure text in an encypted text file.

SkylarkSafe will keep you informed about the strength of your passwords, including warning against commonly used text strings.

SkylarkSafe optionally salts and hashes passwords for protection against brute force attacks, but very strong passwords can be used directly if needed.

Please send questions or suggestions to

SkylarkSafe is free for personal use, but we ask businesses and invite you to donate if you find it useful and would like to see improvements and updates. Recommended donation/cost is $5 for individual use or $10 for businesses but any support is sincerely appreciated.

Or using crypto:
Litecoin: LfkRAdC9rQEcvYzAjRHapQGEgmUNdEbGqv
Ethereum: 0x87055f1e488190b2acbe212d4c604346a9b398fb
Bitcoin and Bitcoin cash: 1CXW9cn7wmDbaMDznYcxa2QNpPAGpVutuE

Normal disclaimer: We do not warrant that this program works or will not fail or that the encryption will not eventually be cracked, or that it won't crash and lose your data, so please keep an offline backup of all your important data.

Most especially, do not forget your password and keep a copy of your salt value!

To open your encrypted files on a new computer you will need your password and to paste your original Salt value into the new PC.

Recent changes:
Version 2.02:

* Changed wording of Notices to Alerts
* Added Hash of text feature
* More informative messages if a problem occurs during startup or with preferences

Version 2.01:

* Fixes a bug where the last character of large text files may be dropped.
* Improves printed text layout with narrower margins and smaller font.
* Reworked user interface for readability.
* The program now asks whether to delete the original file after creating an encrypted version.
* Notices (error and informational messages) are now displayed in a larger two row area.
* Previous notices can now be viewed with Previous and Next buttons.
* IOTA specific utilities have been removed.
* The preferences file is now saved in the AppData folder by default instead of colocated with the program.

Version 1.02:

* Fixes a bug that files encrypted with salt would incorrectly report blank salt

Release version 1.00:

* Adds text printing and changes the name to SkylarkSafe to avoid false positives in Norton Antivirus.

Beta version 0.92:

* Adds viewing and printing encrypted image files.

Beta version 0.91:

* Improves prompts to save edited text when closing, and adds more 'How To' help text.

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