Encrypt text with CryptMax
A simple, minimalistic, user friendly app, that allows you to encrypt text¹ using a secret key² into a ciphertext and then send it via SMS, social apps or simply copy and paste it wherever you want. This app uses AES (Advanced Encryption Standard) to encrypt text, so far the only working way of breaking AES without knowing the secret key is by brute force which can take up to a few billion years for a good password.
If you want to read an encrypted text message you should first know the secret key and the key length(128, 192 or 256), without knowing them you can't decrypt the ciphertext and read it.-------------------------------------------------------------------------------------------------------------------------------------
USAGE:
The usage of this app is pretty straightforward, however two things are worth mentioning:
1. CHANGING THE KEY LENGTH is done by pressing the "AES-###" button at the top of the app, where ### is the bit length of the secret key, it can be set to 128, 192 or 256. Different key sizes encrypt text differently even with the same key.
2. PASTING TEXT³ can be done simply by long pressing the text field.
*You can encrypt text with this app multiple times using different secret key and key size.-------------------------------------------------------------------------------------------------------------------------------------
DISCLAIMER:
1. The developer of this app distances himself from the contents of the encrypted messages made by its users. Using any kind encryption for criminal activity is illegal. AES (Advanced Encryption Standard) also known as Rijndael developed by the Belgian cryptographers Joan Daemen and Vincent Rijmen is the most widely used symmetric-key encryption algorithm today and is available for free use in many apps.
2. In case of a published practical cryptographic "break" faster than a brute force against AES, the developer of this app must change the encryption algorythm within a week, however the developer will not be responsible for any previous encrypted messages that can be broken.
3. The developer of this app is not responsible if a ciphertext is somehow decrypted using the secret key (or the same bitstream) by an unwanted third party, the secret key can be uncovered in multiple ways for example using a malicious software (keylogger) or being leaked by one of the original users. So far the fastest method of breaking an AES ciphertext, having only the ciphertext, is a brute force attack, so using strong passwords is highly recommended.-------------------------------------------------------------------------------------------------------------------------------------
NOTE_1: The text can be written in any language and in any alphabet that is widely used today, all Unicode/UTF-8 characters can be used.
NOTE_2: The key also accepts all Unicode/UTF-8 characters, the strength of the secret key is determined by its length and the variety of different characters that are being used.
NOTE_3: Pasting the ciphertext into the text field is the recommended way of inputting a ciphertext. Simply copy the text message from the SMS or any other app.
NOTE_4: Encrypt text with this app and enjoy safe communication with you friends and colleagues.
Category : Communication
Reviews (26)
Does what it claims and thanks for add free. Would like to see a random seed incorporated with password before encryption - at the moment same message plus same password always results in the same encrypted message - surely this is a weakness. Also you offer AES128 AES192 and AES256 - who would choose the weaker options? yet you set AES128 by default. Would like to give 5 stars but not quite there yet. Updated to 5 stars following Devs prompt reply - good service.
That would be cool if that hats the password thing like everyone said as well as you're able to decrypt it without another person having to have the software. I seen other apps that are good but they're very difficult to use but they do have some that whether you use encrypt Max or whatever it decrypts to file no matter what and you don't have to have the same exact app. I use temp.pm to send the key code to the person who has the Crypt Max so that no one else can pick it up and then they'll be able to enter it in and decrypt that I feel like it's more safer but that's the reason why I gave it 4 stars. I heard you were making a updated version I think that that would be awesome and it will probably be a great great app
Its straight forward. I never review apps. Not because I don't want to but because they bombard you with ads. I want to donate money to you're application development. Please explain how I can and I'll do it right now. Its an amazing down to the point encryption app. Good job man. I'd like you're email to ask if you can develop an application for me? If you're avalible?
Person receiving text did not get prompted for key. Had no way to unencrypt. Sent to self had same problem. Tried via email too. Again, nowhere to put in key to unencrypt.
A beautifully simple interface which produces incredibly complex messages. Good that it restarts with the old message and key gone. As most people are likely to use AES-256 it would be useful for that to be the default on start up.
Love the app. Thanks so much for offering. *The only downside to the app? If your friends, family and business associates don't know you're paranoid, you'll have to fill them in when you explain the code. Be prepared to be out of the paranoid-closet. LOL :-}
Amazing app! One problem, I will have to convince my friends I'm not paranoid. Lol 😂
It just encrypt and decrypt the text as it says... Use a secret key to encrypt the text, Just copy the encrypted text and send using any social media apps or SMS. The other user can use your key to decrypt the text to read the message. Just awesome, really fun. Loved it.
I'm about to have about 20 people are more download this app thank you for making it if I could sum it up in just one word that word would be amazing thank you for all your time and effort in the design of this app I appreciate everything you guys did
I like it but, how do the receiver on other end decryption? There's is no option on other end the receiver to decryption. Need full introduction detail on that please than I'll give 5star.
Wonderful and safe. It's safe for me as it doesn't steal my identity or contacts.
Very good application. Thank you very much.
#really nice.... great work thankyou
Simple and to the point.
It's nice
Is awesome apps
Works as advertised.
everyone must use this app now
This is awesome !!
Nice app. I too would like to see AES-256 set as default. An option to not allow Android to screenshot the app, so what has been written in the past doesn't show up when hitting the multitasking button on the phone.
Screenshots are capable in the app. No settings for anything. No instructions except when reading the store description. And those don't REALLY DESCRIBE the exact process/usage. Arrogance on the devs part, I'm not a mind reader. And the ads are pretty annoying, and just another app that needs to be blocked. Good luck making money on this.
This application is pretty good. I am surprised to see that this is well thought out. Good job. 5 atars.
I use this on Twitter to make good mysterys and pranks
I like to know the step by step process of getting it to work any help would be grateful
Good thinking to decrypt from the text forward...
I'm going to create a QR code with my phone number encrypted by my name. The reason is so I can give my phone number to the public in a way that people have to know who lives here to obtain the phone number. I hope consistency will be key, because changes to ciphering will break decrypting the phone number. I use your app anyway because I'm thinking and hoping this is standard and consistent. I want to see other apps decrypting the same cipher text so long as the question is answered in the key field.