Blockchain Based Systems Engineering an der TU München

Karteikarten und Zusammenfassungen für Blockchain Based Systems Engineering an der TU München

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Lerne jetzt mit Karteikarten und Zusammenfassungen für den Kurs Blockchain Based Systems Engineering an der TU München.

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

What is a smart contract?

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

Technical Definition of a Blockchain

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

Functional desciption of a blockchain

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

Aspects on the potential of blockchain technology

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

Use cases of blockchain technology (three examples)

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

Breakdown of Benefits and Drawbacks of centralized Platforms

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

General Benefits of Blockchain-based platforms

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

Benefits and Drawbacks of permisionless Blockchain-based Platforms

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

Benefits and Drawbacks of permissioned Blockchain-based platforms

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

Governance in Blockchain-based platforms

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

2 General Properties of Hash Functions 

Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

3 additional properties of cryptographic hash functions

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Beispielhafte Karteikarten für Blockchain Based Systems Engineering an der TU München auf StudySmarter:

Blockchain Based Systems Engineering

What is a smart contract?
Coined before bitcoin.

Described the formailzation of processes in public networks like the internet.

Blockchain Based Systems Engineering

Technical Definition of a Blockchain
A blockchain is a distributed database that maintains a continously growing list of ordered records called blocks. They are, by design, inherently resistant to modification of the recorded data. 

Blockchain Based Systems Engineering

Functional desciption of a blockchain
A blockchain is a system that enables parties that do not fully trust each other to form and maintain a consensus about the existence, status and evolution of a set of shared facts.

==> Shared set of facts - consensus on the right state of the data

Blockchain Based Systems Engineering

Aspects on the potential of blockchain technology
- intermediary-free transactions of digital, non-copyable goods --> no third party needed (as a financial institute) to ensure the validity of the TA

- digital identities for people and machines that can perform secure transactions (--> anonymous), all transaction details are stored immutable (in the blocks) and decentralized (Blockchain copies lie on a plurality of servers)

- smart contracts (automated, programmable contracts) ensure contract compliance

Blockchain Based Systems Engineering

Use cases of blockchain technology (three examples)
Finance --> replacement of financial institutes as intermeidaries

Energy --> Electricity trading

Digital Identities --> Certificates of origin for digital certificates

Blockchain Based Systems Engineering

Breakdown of Benefits and Drawbacks of centralized Platforms
Benefits: they are efficient, scalable and consist of standardized components

Drawbacks: they require trust in the platform provider (on availability of the service, sufficiency of resources, conditions and no manipulations)

Blockchain Based Systems Engineering

General Benefits of Blockchain-based platforms
- All nodes agree on a consensus on a shared set of facts
- the complete TA history is traceable
- they are optimized for cross-organizational collaboration
- data is stored decentralized (around the globe) and redundant (full copies of the blockchain)

Blockchain Based Systems Engineering

Benefits and Drawbacks of permisionless Blockchain-based Platforms
Benefits:
- Pseudonymity of the wallet owner
- Transparency of transactions
- financial incentives for network growth

Drawbacks:
- Dependancy on a crypto currency
- high energy consumption
- limited TA throughput

Blockchain Based Systems Engineering

Benefits and Drawbacks of permissioned Blockchain-based platforms
Benefits: Upward compatibility with established IT technologies (e.g. Identity management)

Drawbacks:
- interoperability between different consortia
- system complexity
- Blockchain governance

Blockchain Based Systems Engineering

Governance in Blockchain-based platforms
Idea: From centralized management today to decentralized management in a blockchain
- centralized data management ---> decentralized
- non-transparent platform operations --> transparent
- exclusive platform ownership --> shared

BUT for all that the Blockchain needs to be governed regarding its ecosystem, its applications and its infrastructure

Blockchain Based Systems Engineering

2 General Properties of Hash Functions 
1. Compression: The hash fct. maps an input x of arbitraty length to an output h(x) of a fixed length.
2. Ease Of Computation: With a given hash function h and an input x it is easy to compute h(x) (the output).

Blockchain Based Systems Engineering

3 additional properties of cryptographic hash functions
1. Preimage Resistance --> The hash function h is a one-way function. There exists no function h^-1 that is able to find the input x out to an output of h. It is computationally infeasible.

2. 2nd Preimage Resistance --> Given some known input x, it is impossible to find a second input x' with x'!= x that computes to the same hash output. h(x) never = h(x').

3. Collision Resistance --> It is impossible to find any two input values x and y (such that x != y) that compute to the same output of h. h(x) never= h(y) if x!=y)

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