Digital signature with information theoretical security

Thread starter Dragonfall
Start date Aug 22, 2008
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Digital Information Security Theoretical

In summary, a digital signature is a unique code generated using a secret key to verify the authenticity and integrity of a message or document. Information theoretical security in digital signatures is achieved through mathematical principles and algorithms, providing strong protection against forgery and tampering. Using a digital signature with information theoretical security eliminates the need for a trusted third party and offers efficient verification, but may have limitations such as vulnerability to physical attacks and complexity for large-scale applications. They are commonly used in various industries for secure communication, electronic transactions, and document signing.

Aug 22, 2008

Dragonfall

Is there such a classical scheme? I only know of those which offer security from computationally bounded attacks.

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Aug 22, 2008

Greg Bernhardt

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This book seems to have loads on information on such topics
https://www.amazon.com/dp/3540615172/?tag=pfamazon01-20

TOC
http://www.semper.org/sirene/people/birgit/BlurbPfit8_96.html#users

Last edited: May 3, 2017

Aug 22, 2008

Dragonfall

Ah... very interesting. Thanks. Can't find it in any library here though.

1. What is a digital signature?

A digital signature is a mathematical scheme used to verify the authenticity and integrity of a message or document. It involves using a secret key to generate a unique code, known as a signature, which is attached to the message. The recipient can then use a public key to verify the signature and ensure that the message has not been tampered with.

2. How is information theoretical security achieved in digital signatures?

Information theoretical security in digital signatures refers to the level of security that can be achieved using mathematical principles and algorithms without relying on assumptions about the computational power of adversaries. This is achieved through the use of one-way functions and the use of large random numbers to generate the signature, making it practically impossible for an attacker to generate a valid signature without the secret key.

3. What are the benefits of using a digital signature with information theoretical security?

Using a digital signature with information theoretical security provides several benefits, including strong protection against forgery and tampering, non-repudiation, and efficient verification. It also eliminates the need for a trusted third party, making it more secure and cost-effective compared to traditional methods of authentication and verification.

4. Are there any limitations to using a digital signature with information theoretical security?

While information theoretical security offers a high level of protection, there are some limitations to using digital signatures. For example, they may be vulnerable to physical attacks on the hardware or software used to generate and store the secret key. Additionally, they may not be suitable for large-scale applications due to the complexity and computational resources required for generating and verifying signatures.

5. How are digital signatures with information theoretical security used in practice?

Digital signatures with information theoretical security are commonly used in a variety of applications, including secure communication, electronic transactions, and document signing. They are also increasingly being used in industries such as banking, healthcare, and government, where data security and privacy are critical. In these applications, digital signatures provide a reliable and efficient means of verifying the authenticity and integrity of digital information.