Building Encrypted APIs with HTTPS and Paillier

Modern web applications depend on a lot of auxiliary scripts which are often hosted on third-party CDNs. Should an attacker be able to tamper with the files hosted on such a CDN, millions of sites could be compromised. Web developers need a way to guarantee the integrity of scripts hosted elsewhere. This is the motivation behind a new addition to the web platform being introduced by the W3C: sub-resource integrity (http://www.w3.org/TR/SRI/). Both Firefox and Chrome have initial implementations of this new specification and a few early adopters such as Github are currently evaluating this feature.

Modern web applications depend on a lot of auxiliary scripts which are often hosted on third-party CDNs. Should an attacker be able to tamper with the files hosted on such a CDN, millions of sites could be compromised. Web developers need a way to guarantee the integrity of scripts hosted elsewhere. This is the motivation behind a new addition to the web platform being introduced by the W3C: sub-resource integrity. Both Firefox and Chrome have initial implementations of this new specification and a few early adopters are currently evaluating this feature.

What happens in between the time you type a URL in your browser and the time you see the fully rendered page.

Visual version of http://blog.anantshri.info/forgotten_disclosure_dom_xss_prettyphoto The presentation talks about how a disclsoure was forgotten and what we can do to prevent such issues and how to keep a track on Vulnerable components

Operations security (OPSEC) presentations given in Bangkok Python meetup. The presentation covers topics about device encryption, two factor-authentication, SSH, preventing brute force attacks and ensuring your infrastructure integrity.

This document discusses operational security (OPSEC) for teams, users, and infrastructure related to Bitcoin exchanges. It recommends encrypting devices, using two-factor authentication, password managers, login throttling, third-factor authentication parameters like browser fingerprinting and IP whitelisting to strengthen security. Infrastructure security topics covered include fail2ban, Cloudflare, log storage and backups, and intrusion detection. The goal is to mitigate threats like phishing, malware, and physical attacks against systems handling valuable Bitcoin transactions.

This document discusses various operational security (OPSEC) measures for protecting online services and user accounts. It recommends encrypting devices, using two-factor authentication, password managers, and SSH keys. For user security, it suggests moving past passwords and implementing login attempt throttling, two-factor authentication, and third authentication factors. The document also covers infrastructure security techniques like fail2ban, attack mitigation proxies, and flood attack prevention. Hosting provider and physical security are addressed as well, along with server security monitoring.

The document discusses recent trends in cyber security. It begins with threat statistics showing a rapid expansion of the cyber security landscape, with the number of data breaches and records exposed increasing significantly each year. It then provides a technical overview of the top threats such as mobile application vulnerabilities, XML entity expansion attacks, SQL injection, and improper use of HTTP headers. The document also covers education and certification opportunities in cyber security, individual research areas, the local job market, and communities like Colombo White Hat Security.

Content Security Policy (CSP) is a browser security mechanism against content injection. Using the CSP header, browsers can restrict content from just the domains whitelisted in the policy. This session shares lessons learned with deploying CSP at Yahoo.

My presentation to Code for Japan (Japanese slides, English verbal, bilingual Q&A)

Lecture held on 13 May 2015 at the Department of African Languages, Faculty of Oriental Studies, Saint Petersburg State University. It is a slightly altered version of a talk previously given on 27 March 2015 at the 46th Annual Conference on African Linguistics hosted by the University of Oregon in Eugene.

Homomorphic encryption allows computations to be carried out on encrypted data without decrypting it first. This summary discusses Craig Gentry's scheme for fully homomorphic encryption based on ideal lattices. The scheme works by encrypting bits as ciphertexts with small noise that grows with computations. A bootstrapping procedure called re-crypt reduces the noise to keep ciphertexts decryptable. While promising for applications like cloud computing, the scheme has high computational costs that scale poorly with security level. Current research aims to make homomorphic encryption more efficient and practical.

Presented by Sreelakshmy and Mythily in SecurityXploded cyber security meet. visit: http://www.securitytrainings.

Homomorphic encryption allows computations to be performed on encrypted data without decrypting it first. This document discusses homomorphic encryption techniques including partially homomorphic encryptions that support either addition or multiplication operations, and fully homomorphic encryption introduced by Craig Gentry that supports both types of operations. It also covers the use of ideal lattices in lattice-based cryptosystems and the bootstrapping technique used to "refresh" ciphertexts and prevent noise from accumulating during homomorphic computations.

This document discusses homomorphic encryption and its applications in cloud computing. It begins by defining cloud computing and encryption. Homomorphic encryption allows computations to be performed on encrypted data without decrypting it first. This allows a third party like a cloud provider to process data while maintaining its confidentiality. The document outlines partially homomorphic encryption schemes like RSA that support only some operations, and fully homomorphic encryption that supports any computation. Potential applications of homomorphic encryption include online voting systems, encrypted data analytics, and encrypted database queries. In conclusion, homomorphic encryption enables secure computation on encrypted data and enhances privacy in cloud computing.

The document discusses homomorphic encryption, which allows computations to be performed on encrypted data and obtain an encrypted result without decrypting the inputs. It provides examples of partially homomorphic encryption schemes like RSA that allow only addition or multiplication, and fully homomorphic encryption introduced by Craig Gentry in 2009 that allows any computation. The document also discusses applications of homomorphic encryption like secure cloud computing and processing of sensitive encrypted medical records. It summarizes Craig Gentry's homomorphic encryption scheme and the HELib software library implementation.

Introduction to homomorphic encryption, encryption which allows computations on ciphertext. An overview of key aspects and the ideas that allow these schemes to work is given, as well as examples of how to apply it. Christoph Matthies (@chrisma0), Hubert Hesse (@hubx), Robert Lehmann (@rlehmann)

New and daily Modern Standard Arabic words to improve your vocabulary Learn New and daily Modern Standard Arabicwords to improve your Vocabulary with Arabeya Arabic Language Center www.Arabeya.org