Image data of a picture that the user picks up will be hashed by the likes of Sha256 Sha-hashed data of the selected several pictures will be put together and hashed by the likes of Argon2id The Argon2id-hashed data will be outputted as the code to be used as a password, a crypto key, a master-password or something else depending on use cases. With unique salts added, a number of derivative codes can be automatically generated from the first code in a single process

1. Image-to-Code Converter
Application of Expanded Password System
10001101010110101101010010101101
01011111101010101001010101010101
01010101010101010101010101010101
01010101010101000001001111111101
10000111101010101010101010101101
01001010101010101010101010101010
10101010101010101010101010101010
10101010101010011010100001010000
10100101010100101010010111110010
00100000101010111000111001101001
01011101011011011010101101010101
101010101101110110111010101………
…………………………………………….
⇒ Image data of the
several pictures that the
user selects from the
grid/matrix to be turned
into digital code of any
length ⇒
The code is a password, a cryptographic key or something else depending on use cases
30th July 2023
Mnemonic Identity Solutions Limited

2. Processing of Image Data
Image data of a picture that the user picks up will be hashed by the
likes of Sha256
Sha-hashed data of the selected several pictures will be put
together and hashed by the likes of Argon2id
The Argon2id-hashed data will be outputted as the code to be used
as a password, a crypto key, a master-password or something else
depending on use cases.
With unique salts added, a number of derivative codes can be
automatically generated from the first code in a single process
* The 2023 version

3. On-the-fly Regeneration
The code thus generated will be eliminated when the program
is shut down. It no longer exists anywhere in the universe.
When the code is required next, the user will only need to
select the same pictures - The same code will be regenerated.
Leak-proof – Should a hacker break into the program, they
would not find any secret data they may want other than login
credential invincibly hashed by Shar256 and Argon2id.
*2023 version

4. Entropy
What ‘several images among dozens’ has to cope with is not the
automated brute force attacks on the server, but visual-manual
attacks on the display.
A million trials, say, 20 bits, would be no more than a joke against
automated brute force attacks. However, it makes a pretty tall wall
against visual-manual attacks, particularly when the positions of
images are randomly changed.
On the other hand, the entropy of the code that faces brute force
attacks can easily be 160bits, 320 bits or even megabits, gigabits,
terabits by linking thumbnail images to massive unique dataset.
The burden on the user will still be the same - locating several
pictures.

5. Applications of Converter
(A)Password generation for device/app login
(B) Master-password generation for password manager
(B’) Master-password generation for crypto-key manager
(C) Crypto-key generation for data encryption software

6. Mnemonic Guard
Software of password generation for Windows login
A 32-digit password generated by our Converter will be handed to
the login interface under Windows’ account management system –
There is a single-user version and a multi-user version. There
should be no problem to get it incorporated into Active Directory.
A derivative of the multi-user version is used by Japanese Army for
the personnel responsible for encrypted data exchange on field
communications vehicles since 2013.

7. Mnemonic Gateways
Software of master-password generation for password manager
with no password vault
When logged-in to the software by picking up the registered
images, a unique secret credential will be generated/re-
generated from the image data on the fly.
Then, select the account requiring a password from the account
list and the software will enable us to send out the user ID and
the unique password generated/re-generated from the
abovesaid secret credential to the login page of the target
account.

8. Cryptomnemo
Software of crypto-key generation for a combined data encryption software
When logged-in to the software by picking up the registered images, a
cryptographic key will be generated/re-generated from the image data on the
fly.
Then, specify the files or folders that require encryption or decryption – The
specified data will be encrypted or decrypted. When the program is shut down,
the crypto-key will be eliminated.
Next time the program is started and the registered images selected, the same
crypto key will be regenerated on the fly.
Combination with QRC’s eAES will be the optimal for security-sensitive areas.

9. Thanks for your time