Generating usable high entropy passphrases in local language from personalized intersection corpus

A user device (100) for high entropy passphrase generation, the user device (100) comprising:

• a memory (102) storing instructions;
• one or more Input/Output (I/O) interfaces (106);
• and
• one or more hardware processors (104) coupled to the memory (102) via the one or more I/O interfaces (106), wherein the one or more hardware processors (104) are configured by the instructions to:
• prompt a user, to speak out a recallable phrase comprising a set of words using natural language of the user, wherein the recallable phrase is converted to a text using an Automated Speech Recognition (ASR) engine;
• filter a set of Seed List Words (SLWs) from the recallable phrase by based on a personalized intersection corpus comprising a plurality of words correctly identifiable by the ASR engine;
• generate a passphrase distance matrix for the set of SLWs by referring to an intersection corpus distance matrix generated for the personalized intersection corpus based on a vector distance between each of the plurality of words in the personalized intersection corpus, wherein column elements of the passphrase distance matrix comprise the set of SLWs in alphabetical order and row elements comprise a predefined number of passphrase words, for each SLW among the set of SLWs, identified based on descending order of the vector distance between each SLW and the plurality of words of the personalized intersection corpus, and wherein the descending order of vector distance arranges the predefined number of passphrase words from high entropy to low entropy value;
• perform column wise splitting of the passphrase distance matrix to generate a plurality of splits, wherein each of the plurality of splits comprising a predefined number of words for each SLW, wherein a first split to a last split comprising words with higher vector distance resulting in high entropy words gradually shifting to lower vector distance resulting in low entropy;
• generate a passphrase corpus comprising a plurality of passphrases generated from at least one of the first spilt and a subsequent split by a row wise selection of words of the passphrase matrix one at a time;
• randomly reading out and displaying a preset number of passphrases from among the plurality of phrases on a display screen of the user device, wherein a passphrase among the preset number of passphrases associated with the high entropy words is positioned at a display screen position having highest usability in context of the user;
• and
• setting a user selected passphrase for device access authentication of the user device.

One or more non-transitory machine-readable information storage mediums comprising one or more instructions which when executed by one or more hardware processors cause:

• prompting a user to speak out a recallable phrase comprising a set of words using natural language of the user, wherein the recallable phrase is converted to a text using an Automated Speech Recognition (ASR) engine;
• filtering a set of Seed List Words (SLWs) from the recallable phrase based on a personalized intersection corpus comprising a plurality of words correctly identifiable by the ASR engine;
• generating a passphrase distance matrix for the set of SLWs by referring to an intersection corpus distance matrix generated for the personalized intersection corpus based on a vector distance between each of the plurality of words in the personalized intersection corpus, wherein column elements of the passphrase distance matrix comprise the set of SLWs in alphabetical order and row elements comprise a predefined number of passphrase words, for each SLW among the set of SLWs, identified based on descending order of the vector distance between each SLW and the plurality of words of the personalized intersection corpus, and wherein the descending order of vector distance arranges the predefined number of passphrase words from high entropy to low entropy value;
• performing column wise splitting of the passphrase distance matrix to generate a plurality of splits, wherein each of the plurality of splits comprising a predefined number of words for each SLW, wherein a first split to a last split comprising words with higher vector distance resulting in high entropy words gradually shifting to lower vector distance resulting in low entropy;
• generating a passphrase corpus comprising a plurality of passphrases generated from at least one of the first spilt and a subsequent split by a row wise selection of words of the passphrase matrix one at a time;
• randomly reading out and displaying a preset number of passphrases from among the plurality of phrases on a display screen of the user device, wherein a passphrase among the preset number of passphrases associated with the high entropy words is positioned at a display screen position having highest usability in context of the user;
• and
• setting a user selected passphrase for device access authentication of the user device.