Topic
Password
About: Password is a research topic. Over the lifetime, 35069 publications have been published within this topic receiving 389691 citations. The topic is also known as: pwd & p.
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23 Oct 2011
TL;DR: The evaluation shows that CryptDB has low overhead, reducing throughput by 14.5% for phpBB, a web forum application, and by 26% for queries from TPC-C, compared to unmodified MySQL.
Abstract: Online applications are vulnerable to theft of sensitive information because adversaries can exploit software bugs to gain access to private data, and because curious or malicious administrators may capture and leak data. CryptDB is a system that provides practical and provable confidentiality in the face of these attacks for applications backed by SQL databases. It works by executing SQL queries over encrypted data using a collection of efficient SQL-aware encryption schemes. CryptDB can also chain encryption keys to user passwords, so that a data item can be decrypted only by using the password of one of the users with access to that data. As a result, a database administrator never gets access to decrypted data, and even if all servers are compromised, an adversary cannot decrypt the data of any user who is not logged in. An analysis of a trace of 126 million SQL queries from a production MySQL server shows that CryptDB can support operations over encrypted data for 99.5% of the 128,840 columns seen in the trace. Our evaluation shows that CryptDB has low overhead, reducing throughput by 14.5% for phpBB, a web forum application, and by 26% for queries from TPC-C, compared to unmodified MySQL. Chaining encryption keys to user passwords requires 11--13 unique schema annotations to secure more than 20 sensitive fields and 2--7 lines of source code changes for three multi-user web applications.
1,269 citations
08 May 2007
TL;DR: The study involved half a million users over athree month period and gets extremely detailed data on password strength, the types and lengths of passwords chosen, and how they vary by site.
Abstract: We report the results of a large scale study of password use andpassword re-use habits. The study involved half a million users over athree month period. A client component on users' machines recorded a variety of password strength, usage and frequency metrics. This allows us to measure or estimate such quantities as the average number of passwords and average number of accounts each user has, how many passwords she types per day, how often passwords are shared among sites, and how often they are forgotten. We get extremely detailed data on password strength, the types and lengths of passwords chosen, and how they vary by site. The data is the first large scale study of its kind, and yields numerous other insights into the role the passwords play in users' online experience.
1,068 citations
TL;DR: The present design of the password security scheme was the result of countering observed attempts to penetrate the system and is a compromise between extreme security and ease of use.
Abstract: This paper describes the history of the design of the password security scheme on a remotely accessed time-sharing system. The present design was the result of countering observed attempts to penetrate the system. The result is a compromise between extreme security and ease of use.
1,015 citations
Patent•
14 May 2003
TL;DR: In this article, a method and system for securely managing the storage and retrieval of data is proposed, which may include receiving a first disaster recovery code and acquiring a first password corresponding to the first code.
Abstract: Aspects of the invention provide a method and system for securely managing the storage and retrieval of data Securely managing the storage and retrieval of data may include receiving a first disaster recovery code and acquiring a first password corresponding to the first disaster recovery code A first disaster recovery key may be generated based on the first disaster recovery code and the first password Another aspect of the invention may also include generating the received first disaster recovery code based on said first password and the first disaster recovery key The generated disaster recovery code may be securely stored on at least a portion of a storage device or a removable media Data stored on the storage device may be encrypted using the first generated disaster recovery key Additionally, data read from the storage device may be decrypted using the generated first disaster recovery key
972 citations
20 May 2012
TL;DR: It is concluded that many academic proposals to replace text passwords for general-purpose user authentication on the web have failed to gain traction because researchers rarely consider a sufficiently wide range of real-world constraints.
Abstract: We evaluate two decades of proposals to replace text passwords for general-purpose user authentication on the web using a broad set of twenty-five usability, deployability and security benefits that an ideal scheme might provide. The scope of proposals we survey is also extensive, including password management software, federated login protocols, graphical password schemes, cognitive authentication schemes, one-time passwords, hardware tokens, phone-aided schemes and biometrics. Our comprehensive approach leads to key insights about the difficulty of replacing passwords. Not only does no known scheme come close to providing all desired benefits: none even retains the full set of benefits that legacy passwords already provide. In particular, there is a wide range from schemes offering minor security benefits beyond legacy passwords, to those offering significant security benefits in return for being more costly to deploy or more difficult to use. We conclude that many academic proposals have failed to gain traction because researchers rarely consider a sufficiently wide range of real-world constraints. Beyond our analysis of current schemes, our framework provides an evaluation methodology and benchmark for future web authentication proposals.
914 citations