Shamir Secret Sharing Presentation
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This document proposes securing emails through Shamir's secret sharing technique. It splits confidential information like passwords or SSNs into multiple shares that are sent in separate emails. The recipient can then reconstruct the original secret by combining a sufficient number of shares, providing perfect information-theoretic security. The system architecture involves generating shares on the sending end and reconstructing the secret on the receiving end. This approach offers an alternative secure email solution and protects against intruders obtaining private keys. Examples demonstrate how a secret is split into shares and then reassembled from the shares.
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We rely on secrets such as safe combinations, PIN codes, computer passwords, etc. But so many things happen to lose secretes.
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We rely on secrets such as safe combinations, PIN codes, computer passwords, etc. But so many things happen to lose secretes.
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Follow us to never miss an update in the future.
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
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1) Secret sharing schemes involve dividing a secret into multiple pieces called shares such that only certain subsets of shares can be combined to reconstruct the secret.
2) The phases of a secret sharing scheme include building shares from the secret, distributing shares to participants, reconstructing the secret from qualified share subsets, and updating shares.
3) Secret sharing schemes have applications including secure encrypted backup systems where the recovery key is protected via secret sharing, distributing bank vault unlocking shares among employees, and generating password shares that are stored in different locations for easy password recovery.
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Follow us to never miss an update in the future.
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
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IRJET- A Work Paper on Email Server using 3DES
This document presents a proposed email server that uses 3DES encryption for secure email communication. The existing email systems are vulnerable without proper security measures. The proposed system encrypts email contents and the user inbox using 3DES encryption. It implements IMAP, SMTP, and SSL protocols for email transfer and communication between the client and server. The system consists of modules for user registration, login using one-time passwords, email composition, encryption of composed emails using 3DES before transmission, decryption of received emails, and a contact list. The system aims to provide a secure email solution by encrypting all communication and preventing unauthorized access to email contents even if the account is compromised.
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The document discusses data encryption and how it works. It explains that data encryption scrambles data before transmission to protect it from eavesdroppers. It describes symmetric encryption, where the same key is used to encrypt and decrypt, and asymmetric encryption, where public and private keys are used. Simulations of encryption methods are provided to illustrate how they work. While encryption does not prevent data theft, asymmetric encryption is sufficient to keep data safe since only the private key can decrypt messages.
Similar to Shamir Secret Sharing Presentation (20)
Shamir Secret Sharing Presentation
- 1. Securing Emails using Secret Sharing
- 2. Securing Emails using Secret Sharing Have you ever sent your confidential information such as passport and SSN over email?
- 3. Motivation • Most people have done it • Email servers have confidential information about most people
- 4. Shamir Secret Sharing MUA • Secret: Any information that a user wishes to encrypt • Share: The resultant k pieces of information generated from the secret, which will not yield any useful information on the secret until all shares are combined.
- 5. Application • Secure: Perfect information-theoretic security • Extensible: No share is significantly larger than the original secret • Fast: Computational overhead for generating shares and reconstructing secrets is linear based on the number of shares generated and length of the secret.
- 6. System Architecture • Each piece P represents a different email address to which a single share is sent. • Share generation happens on the sending end. • Secret reconstruction happens at the receiving end.
- 7. Why use this? • People should have the option to use completely secure email systems • Connection between user and email provider is typically encrypted and secure, but from then on there is no guarantee. • Using a web browser to interact with email is inherently insecure • Widely used public key encryption schemes are useless if an intruder obtains the private key
- 8. Example Share Generation • S = 1234 • 𝑘 = 3 • 𝑟1 = 166 • 𝑟2 = 9 • 𝑎 = 𝑘 • 𝑎 = 𝑆, 𝑟1, 𝑟2 𝑘 = 3 • 𝑝 = 1631 • 𝑓 𝑥 = 𝑖=0 𝑘 𝑎𝑖 ∗ 𝑥 𝑖 mod p • 𝑆ℎ𝑎𝑟𝑒𝑠 = {𝑓 1 , 𝑓 2 , 𝑓 3 }
- 9. Example Secret Reconstruction x y 1 1494 2 329 3 965 • 𝑓 𝑥 𝑚𝑜𝑑 𝑝 = 𝑗=0 𝑘 𝑦𝑗 ∗ 𝑙𝑗(𝑥) • 𝑙𝑗 𝑥 = 0≤𝑚≤𝑘 𝑚≠𝑗 𝑥−𝑥 𝑚 𝑥 𝑗−𝑥 𝑚 • 𝑓 0 = 𝑆 ∴ 𝑆 = 1234
- 10. Next Steps • Collect data and write a research paper • Convert the program into an Android app