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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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67

Acoustic Cryptanalysis: Key Extraction From GnuPG RSA Keys

Here, we describe a new acoustic cryptanalysis key extraction attack, applicable to GnuPG's current implementation of RSA. The attack can extract full 4096-bit RSA decryption keys from laptop computers (of various models), within an hour, using the sound generated by the computer during the decryption of some chosen ciphertexts.. We experimentally demonstrate that such attacks can be carried out, using either a plain mobile phone placed next to the computer, or a more sensitive microphone placed 4 meters away. The link for this article located at Schneier on Security is no longer available. . We experimentally demonstrate that such attacks can be carried out, using either a plain mobile phon. describe, acoustic, cryptanalysis, extraction, attack, applicable, gnupg's, current. . LinuxSecurity.com Team

Calendar 2 Dec 19, 2013 User Avatar LinuxSecurity.com Team Cryptography
67

University of Michigan Research: RSA Authentication Flaws Revealed

Researchers at the University of Michigan say they have uncovered a way to circumvent encryption used on many devices. The research is the work of Valeria Bertacco, Todd Austin and Andrea Pellegrini. According to their paper, entitled 'Fault-Based Attack of RSA Authentication' (PDF), the trio demonstrated a way to beat the popular encryption method, which is used in media players, laptop computers, smartphones and other devices.. It is also used by retailers to secure customer information online. The researchers found that by varying the voltage on a device it was possible to get their hands on the 'private key' needed to beat the security feature. Using what they described as an inexpensive device specially-built for the experiment, the trio manipulated the voltage and caused the computer to make small mistakes in its communications with other clients. This ultimately revealed small pieces of the private key, which they eventually used to reconstruct the key offline. From the paper: "The paper makes three important contributions: first, we develop a systematic fault-based attack on the modular exponentiation algorithm for RSA. Second, we expose and exploit a severe flaw on the implementation of the RSA signature algorithm on OpenSSL, a widely used package for SSL encryption and authentication. Third, we report on the first physical demonstration of a fault-based security attack of a complete microprocessor system running unmodified production software: we attack the original OpenSSL authentication library running on a SPARC Linux system implemented on FPGA, and extract the system's 1024-bit RSA private key in approximately 100 hours." The link for this article located at eWeek is no longer available. . It is also used by retailers to secure customer information online. The researchers found that by va. researchers, university, michigan, uncovered, circumvent, encryption. . LinuxSecurity.com Team

Calendar 2 Mar 03, 2010 User Avatar LinuxSecurity.com Team Cryptography
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150
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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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