The Computer Journal,
Год журнала:
2022,
Номер
67(2), С. 407 - 422
Опубликована: Дек. 30, 2022
Abstract
Security
faces
huge
challenges
in
Internet
of
Things
(IoT)
environments.
In
particular,
conventional
access
control
standards
and
models
tend
to
be
less
tailored
for
IoT
due
the
constrained
nature
smart
objects.
Usually,
a
powerful
third
party
is
used
handle
logic.
However,
this
lacking
transparency
could
harm
user
privacy.
Therefore,
providing
distributed
solution,
while
considering
privacy-preserving
awareness
systems,
paramount
importance.
The
described
issue
can
addressed
using
emergent
Blockchain
technology
that
provides
promising
choice
build
new
generation
decentralized
transparent
solutions.
This
paper
proposes
contract-based
framework
healthcare
which
based
on
contracts
provide
trustworthy
control,
combined
with
GTRBAC
model
express
fine-grained
policies
temporal
authorization
constraints.
To
prove
feasibility
validity
proposed
framework,
also
detailed
technical
description
an
initial
implementation
execution.
An
experimental
evaluation
shows
security
properties’
analyses
achieved
best
possible
no
vulnerabilities
found,
cost
operations
increases
linearly
as
number
policy
constraints
increases.
Besides,
comparative
analysis
reveals
approach
achieve
good
results
low
gas
costs
latency.
Software Practice and Experience,
Год журнала:
2021,
Номер
52(4), С. 841 - 867
Опубликована: Май 18, 2021
Abstract
The
COVID‐19
pandemic
has
emerged
as
a
highly
transmissible
disease
which
caused
disastrous
impact
worldwide
by
adversely
affecting
the
global
economy,
health,
and
human
lives.
This
sudden
explosion
uncontrolled
spread
of
revealed
limitations
existing
healthcare
systems
regarding
handling
public
health
emergencies.
As
governments
seek
to
effectively
re‐establish
their
economies,
open
workplaces,
ensure
safe
travels
progressively
return
normal
life,
there
is
an
urgent
need
for
technologies
that
may
alleviate
severity
losses.
article
explores
promising
solution
secure
Digital
Health
Certificate,
called
NovidChain,
Blockchain‐based
privacy‐preserving
platform
test/vaccine
certificates
issuing
verifying.
More
precisely,
NovidChain
incorporates
several
emergent
concepts:
(i)
Blockchain
technology
data
integrity
immutability,
(ii)
self‐sovereign
identity
allow
users
have
complete
control
over
data,
(iii)
encryption
Personally
Identifiable
Information
enhance
privacy,
(iv)
W3C
verifiable
credentials
standard
facilitate
instant
verification
proof,
(v)
selective
disclosure
concept
permit
user
share
selected
pieces
information
with
trusted
parties.
Therefore,
designed
meet
high
level
protection
personal
in
compliant
GDPR
KYC
requirements,
guarantees
user's
self‐sovereignty,
while
ensuring
both
safety
populations
right
privacy.
To
prove
security
efficiency
proposed
platform,
this
also
provides
detailed
technical
description,
proof‐of‐concept
implementation,
different
experiments,
comparative
evaluation.
evaluation
shows
better
financial
cost
scalability
results
compared
other
solutions.
we
note
difference
time
between
operations
(i.e.,
46%
56%).
Furthermore,
confirms
ensures
properties,
particularly
integrity,
forge,
binding,
uniqueness,
peer‐indistinguishability,
revocation.
Sensors,
Год журнала:
2022,
Номер
22(4), С. 1497 - 1497
Опубликована: Фев. 15, 2022
Over
the
past
several
years,
adoption
of
HealthCare
Monitoring
Systems
(HCS)
in
health
centers
and
organizations
like
hospitals
or
eldery
homes
growth
significantly.
The
such
systems
is
revolutionized
by
a
propelling
advancements
IoT
Blockchain
technologies.
Owing
to
technological
advancement
sensors
market,
innovations
HCS
monitor
patients
status
have
motivated
many
countries
strength
their
efforts
support
citizens
with
care
delivery
under
directives
physician
who
has
access
patient's
data.
Nevertheless,
secure
data
sharing
principal
concern
be
comfort
use
systems.
Current
are
not
able
provide
reassuring
security
policies.
For
that,
one
our
focus
this
work,
countermeasures,
likewise
cost-efficient
solution
for
integrating
storage
model
based
on
Interplanetary
File
(IPFS).
technology
an
emerging
pharmaceutical
industry
starts
take
place
allows
providers
track
connected
devices
control
shared
data,
hence
protecting
patients'
privacy.
Furthermore,
addition
Edge
Fog
computing
improved
react
real-time
enhance
reliability.
A
variety
communication
protocols
can
connect
sensor
edge/Fog
layer
best
choice
will
depend
upon
connectivity
requirements:
range,
bandwidth,
power,
interoperability,
security,
Instead,
efficiency
would
decline
hurt
if
protocol
inconsistent.
LoRa
(Long
Range)
communications
as
leader
among
Low-Power
Wide-Area
Networks
(LPWANs)
entering
domain
benefiting
from
features
long-range
distances
low
power
consumption.
This
work
proposes
LoRaChainCare,
architecture
which
combines
technologies
Blockchain,
Fog/Edge
computing,
protocol.
real
implementation
LoRaChainCare
system
presented
evaluated
terms
cost,
run
time
International Journal of Computing and Digital Systems,
Год журнала:
2024,
Номер
15(1), С. 1595 - 1614
Опубликована: Апрель 6, 2024
This
research
focuses
on
the
metaverse's
evolving
trend
and
potential
application
of
blockchain
technology
in
accounting
virtual
assets
this
digital
domain.The
metaverse
introduces
a
new
economy
which
users
may
earn
real-world
revenue
through
activities,
necessitating
need
for
efficient
dependable
asset
accounting.Blockchain
technology,
with
its
decentralized
immutable
record,
appears
to
be
viable
answer
these
problems.This
paper
discusses
present
status
as
well
role
businesses
economy.It
also
determines
technology's
issues
limits
makes
recommendations
further
development.The
approach
study
is
based
comprehensive
review
existing
literature
interactions
between
accounting,
metaverse.The
findings
indicate
that
has
transform
by
improving
security,
transparency,
consistency.However,
scalability
legal/regulatory
must
overcome
before
it
can
completely
achieve
promise.Accounting
experts,
developers,
stakeholders
interested
convergence
will
find
useful.
Wireless Communications and Mobile Computing,
Год журнала:
2021,
Номер
2021(1)
Опубликована: Янв. 1, 2021
During
2021,
different
worldwide
initiatives
have
been
established
for
the
development
of
digital
vaccination
certificates
to
alleviate
restrictions
associated
with
COVID‐19
pandemic
vaccinated
individuals.
Although
diverse
technologies
can
be
considered
deployment
such
certificates,
use
blockchain
has
suggested
as
a
promising
approach
due
its
decentralization
and
transparency
features.
However,
proposed
solutions
often
lack
realistic
experimental
evaluation
that
could
help
determine
possible
practical
challenges
platform
this
purpose.
To
fill
gap,
work
introduces
scalable,
blockchain‐based
secure
sharing
or
other
disease
certificates.
As
an
indicative
case,
we
emulate
large‐scale
by
considering
countries
European
Union.
The
is
evaluated
through
extensive
experiments
measuring
computing
resource
usage,
network
response
time,
bandwidth.
Based
on
results,
scheme
shows
satisfactory
performance
across
all
major
criteria,
suggesting
it
set
pace
real
implementations.
Vis‐à‐vis
related
work,
novel,
especially
prism
large‐scale,
full‐fledged
implementation
assessment.
Software Practice and Experience,
Год журнала:
2021,
Номер
52(4), С. 887 - 903
Опубликована: Авг. 15, 2021
This
study
contributes
to
our
understanding
of
how
the
emergence
COVID-19
pandemic
changes
global
Banking
Financial
Services
and
Insurance
(BFSI)
landscape.
Before
pandemic,
BFSIs
corporate
strategy
was
solely
aligned
quest
for
operational
efficiency.
However,
during
ongoing
are
forced
adopt
digital
transformation
in
their
operations
due
a
rise
transaction
volumes.
The
already
triggers
holistic
innovations
concerning
BFSI's
product,
process,
concept,
trend,
or
idea.
Thus,
BFSI
cannot
survive
without
efficient
innovative
system
software
operations.
plots
hype
cycle
identify
relevant
technologies
deal
with
real-world
business
problems.
indicates
that
need
advanced
data
integration
is
growing
has
triggered
it.
argues
incorporation
might
be
challenging
initially
but
eventually
it
may
result
an
model
handle
these
types
unexpected
circumstances.
Sensors,
Год журнала:
2022,
Номер
22(14), С. 5238 - 5238
Опубликована: Июль 13, 2022
Over
the
last
couple
of
years,
Blockchain
technology
has
emerged
as
a
game-changer
for
various
industry
domains,
ranging
from
FinTech
and
supply
chain
to
healthcare
education,
thereby
enabling
them
meet
competitive
market
demands
end-user
requirements.
gained
its
popularity
after
massive
success
Bitcoin,
which
it
constitutes
backbone
technology.
While
blockchain
is
still
emerging
finding
foothold
across
Cloud
computing
comparatively
well
defined
established.
Organizations
such
Amazon,
IBM,
Google,
Microsoft
have
extensively
invested
in
continue
provide
plethora
related
services
wide
range
customers.
The
pay-per-use
policy
easy
access
resources
are
some
biggest
advantages
Cloud,
but
continues
face
challenges
like
data
security,
compliance,
interoperability,
management.
In
this
article,
we
present
integrating
along
with
applications
Blockchain-as-a-Service.
article
presents
itself
detailed
survey
illustrating
recent
works
combining
amalgamation
both
technologies.
also
talks
about
blockchain-cloud
being
offered
by
existing
Service
providers.
IEEE Access,
Год журнала:
2023,
Номер
11, С. 121013 - 121042
Опубликована: Янв. 1, 2023
The
traditional
Know
Your
Customer
(KYC)
procedure
used
by
banks
is
deemed
unreliable
and
costly.
Therefore,
the
adoption
of
emerging
technologies
essential
for
banking
firms'
future
prospects.
One
such
technology
that
has
gained
widespread
acceptance
Blockchain,
which
known
its
dependability
security
across
various
fields.
This
study
aims
to
investigate
how
implementation
Blockchain
can
modify
existing
business,
particularly
KYC
document
verification
process,
storing
monitoring
information.
current
need
an
optimized
system
paramount,
one
coupled
with
a
secure
trustworthy
like
withstand
fraudulent
activities
while
also
overcoming
scalability
privacy
challenges.
article
analyses
previous
relevant
works,
highlight
eliminates
intermediaries,
thereby
reducing
possibility
malicious
errors
may
occur
when
there
are
multiple
manual
tasks
involved.
IEEE Access,
Год журнала:
2021,
Номер
9, С. 138003 - 138025
Опубликована: Янв. 1, 2021
Digital
COVID-19
certificates
serve
as
reliable
proof
that
an
individual
was
vaccinated,
tested
negative,
or
healed
from
COVID-19,
facilitating
health,
occupational,
educational,
and
travel
activities
during
the
pandemic.
This
paper
contributes
first
to
our
knowledge
state-of-the-art
holistic
review
of
this
ecosystem,
attempting
answer
following
questions:
1)
is
there
a
harmonization
among
academia,
organizations,
governments
in
terms
certificate
deployment
technology?;
2)
what
proliferation
such
schemes
worldwide
how
similar
are
they?;
3)
smartphone
applications
accompany
privacy-preserving
end-user's
perspective?
To
respond
these
questions,
four-tier
approach
followed:
(a)
we
scrutinize
so
far
academic
works
suggesting
some
type
digital
certificate,
highlighting
common
characteristics
weaknesses;
(b)
constructively
report
on
different
initiatives
proposed
by
organizations
alliances;
(c)
briefly
54
country
around
globe;
(d)
analyze
both
statically
dynamically
all
official
Android
offered
for
reveal
possible
hiccups
affecting
security
privacy
end-user.
From
bird's
eye
view,
great
majority
developed
follow
either
blockchain
model
asymmetric
cryptosystem,
spread
especially
Europe
partly
Asia
high,
degree
distinctiveness
relevant
countries
does
exist,
substantial
variations
regarding
level
between
one
hand
America
other.
Blockchain Research and Applications,
Год журнала:
2022,
Номер
3(4), С. 100092 - 100092
Опубликована: Май 29, 2022
COVID-19
has
changed
almost
all
aspects
of
our
lives.
Governments
around
the
world
have
imposed
lockdowns
to
slow
down
transmissions.
Fortunately,
we
found
vaccine,
in
fact,
a
good
number
them.
However,
managing
testing
and
vaccination
process
total
population
is
mammoth
job.
there
are
always
delays
or
data
silo
problems
multi-organizational
work.
Therefore,
streamlining
this
vital
improve
efficiency
save
more
Because
its
effective
sharing
mechanism
among
different
entities
with
security
features,
blockchain
can
be
an
tool
for
applications
health
sector.
Furthermore,
provides
distributed
system
along
greater
privacy,
transparency,
authenticity.
In
article,
presented
blockchain-based
that
seamlessly
integrates
systems,
allowing
transparent.
The
instant
verification
any
tamper-proof
test
result
been
developed,
which
will
serve
as
"Test
Certificates".
A
transparent
efficient
also
exhibited
implemented
"Digital
Vaccine
Passport"
(DVP)
system.
infection
rate-based
prioritization
ensure
fair
well
tackle
distribution
issue
limited
amount
vaccine.
comparative
review
other
existing
works
discussed,
highlighting
clear
difference
from
works.
Our
proposed
distinctive
on
basis
vaccines
seamless
integration
certificates
vaccine
passports,
aid
controlling
pandemic
situation.
This
handy
case
tackling
future
pandemics
initially.