Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: VoiceMask: Anonymize and Sanitize Voice Input on Mobile Devices   Voice input has been tremendously improving the user experience of mobile
devices by freeing our hands from typing on the small screen. Speech
recognition is the key technology that powers voice input, and it is usually
outsourced to the cloud for the best performance. However, the cloud might
compromise users' privacy by identifying their identities by voice, learning
their sensitive input content via speech recognition, and then profiling the
mobile users based on the content. In this paper, we design an intermediate
between users and the cloud, named VoiceMask, to sanitize users' voice data
before sending it to the cloud for speech recognition. We analyze the potential
privacy risks and aim to protect users' identities and sensitive input content
from being disclosed to the cloud. VoiceMask adopts a carefully designed voice
conversion mechanism that is resistant to several attacks. Meanwhile, it
utilizes an evolution-based keyword substitution technique to sanitize the
voice input content. The two sanitization phases are all performed in the
resource-limited mobile device while still maintaining the usability and
accuracy of the cloud-supported speech recognition service. We implement the
voice sanitizer on Android systems and present extensive experimental results
that validate the effectiveness and efficiency of our app. It is demonstrated
that we are able to reduce the chance of a user's voice being identified from
50 people by 84% while keeping the drop of speech recognition accuracy within
14.2%.

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The categories of this paper are: stat
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph