SSL/TLS

Top PDF SSL/TLS:

Performance Analysis Of Ssl/Tls

Performance Analysis Of Ssl/Tls

identification numbers (PINs), passwords, passphrases, as well as“strong” authentication mechanisms, such as one-time password (OTP) and challenge-response (C/R) systems. In theory, the SSL/TLS protocol is assumed to be sound and secure. In practice, however, the vast majority of SSL/TLS-based e-commerce applications, employing user authentication at the application layer, are vulnerable to phishing, Web spoofing and most importantly man-in-the-middle (MITM) attacks. SSL runs above TCP/IP and below HTTP, LDAP, IMAP, NNTP, and other high-level network protocols. It was originally invented by Netscape and has become a de facto Internet standard. For the SSL 3.0 specification (also called SSL v3) in plain text form, SSL, or more specifically, the RSA public-key cryptographic operations usually used to exchange the session key at the start of a connection, is computationally intensive. It takes far more CPU time to establish an SSL connection than a normal connection.
Show more

8 Read more

SSL & TLS Essentials   Securing the Web pdf

SSL & TLS Essentials Securing the Web pdf

The Secure Sockets Layer protocol has been in use for Web com- merce for three years now, and under its new name of Transport Layer Security, the protocol is now in its fourth revision. Engineers now have quite a lot of experience with ssl and tls implementa- tions, much of which has helped to improve the security of the pro- tocol through its revisions. Security specialists have also learned quite a lot about the relationship of ssl to other aspects of the systems that implement it. In fact, although there are no known security flaws in the ssl or tls protocols themselves, other weaknesses in systems us- ing ssl have been successfully exploited, at least in academic or re- search environments. This appendix considers those other weaknesses. It presents them in the form of an ssl security checklist, primarily for those readers who are designing or evaluating ssl im- plementations. Of course, the following list is not exhaustive, and new threats and attacks are likely to arise in the future. Readers should certainly stay up to date with security news and events to make sure that their implementations do not become vulnerable as new attacks are discovered.
Show more

212 Read more

HTTPS traffic analysis and client identification using passive SSL/TLS fingerprinting

HTTPS traffic analysis and client identification using passive SSL/TLS fingerprinting

Third, we assigned the corresponding User-Agents from the dictionary to the results from monitoring the SSL/TLS connections and discussed the required size and accuracy of the dictionary. We found that we need a dictionary of about 300 cipher suite lists with assigned User-Agents. Therefore, the dictionary which was created using the host-based method was not sufficient to cover all the dis- tinct cipher suite lists which appeared in network traffic. On the other hand, only a 1-h sample of the HTTPS traffic contained almost all the cipher suite lists which were observed over the week-long measurement. There- fore, we used the dictionary obtained using the flow-based method. However, many cipher suite lists were paired with more than one User-Agent. We were able to assign a User-Agent to almost every observed cipher suite list with a certain level of probability. Fortunately, in many cases, a lot of User-Agents which corresponded to a sin- gle cipher suite list shared the same client identifier and differed only in their version or a similarly attainable value. The fourth research question regarded application of SSL/TLS fingerprinting in network security. We discussed an example security incident which could be detected using network monitoring and SSL/TLS fingerprinting. A client, which tried to exploit a Shellshock vulnerability, exhibited a unique cipher suite list among other clients. Therefore, we could claim certain clients as suspicious and detect their activity in the network traffic to protect hosts in monitored network.
Show more

14 Read more

Data Security in Cloud Oriented Application
Using SSL/TLS Protocol

Data Security in Cloud Oriented Application Using SSL/TLS Protocol

The success of the TLS/SSL protocol relies on the fact that it was designed to perfectly match the TCP/IP protocol architecture. It maintains the TCP/IP’s layer-based design principles, thus inheriting all their advantages. It maybe for this reason that protocols like S-HTTP have not had the same success. Figure 4 shows how TLS/SSL protocol interacts with the TCP/IP protocol. [2, 5]

7 Read more

Gaining Intuition of SSL / TLS Protocol Version 1.2 for Building Libraries

Gaining Intuition of SSL / TLS Protocol Version 1.2 for Building Libraries

ABSTRACT: This paper defines TLS protocol that comprises two layers: the TLS record and the TLS handshake protocols. It also illustrates the messages that go across network when these protocols are implemented. Transport Layer Security (TLS) – and its predecessor, Secure Sockets Layer (SSL), which is now deprecated by the Internet Engineering Task Force (IETF) – are cryptographic protocols that provide communications security over a computer network.

15 Read more

SSL/TLS SECURITY POSTURE IDENTIFIER

SSL/TLS SECURITY POSTURE IDENTIFIER

SSL/TLS security is an every changing landscape. There has been lot of security issues already identified and patches have been released for it. Still companies fail to implement all the patches because they lack knowledge required to understand SSL/TLS security and its implementation. Hence we are developing a scanner for SSL/TLS which identifies well known existing issues in SSL/TLS security and provide report with SSL/TLS implementation issues. This will help any person without the knowledge of SSL/TLS security to identify weakness in their SSL/TLS secure implementation.
Show more

5 Read more

Best Practices And Applications Of TLS and SSL pdf

Best Practices And Applications Of TLS and SSL pdf

One of the main differences you’ll see between SSL and TLS versions are the cryptographic features, including the ciphers, hash algorithms and key exchange mechanisms they support As time and versions advance, support for weaker features is dropped from the protocol and stronger ones added Administrators on either end of the communication can set policies requiring or prohibiting particular protocols It’s reasonable to claim that the flexibility of TLS with respect to new developments in ciphers and other cryptographic features is one of the main reasons for its success
Show more

18 Read more

AN INSIGHT OF SSL SECURITY ATTACKS

AN INSIGHT OF SSL SECURITY ATTACKS

Secure Sockets Layer (SSL), is a cryptographic protocol that provide communication security over the Internet. SSL encrypt the segments of network connections at the Application Layer for the Transport Layer, using asymmetric cryptography for key exchange, symmetric encryption for confidentiality, and message authentication codes for message integrity. SSL secures web services such as banking, online purchases, email and remote access. SSL has been targeted with attacks from the time it was created. Most of these attacks exploit the vulnerabilities present in the services SSL use, such as digital certificates and the web browsers. Attacks on SSL itself have been successful, at least in the context of research, attacks on the services that SSL uses have been successfully exploited in an actual commercial setting; the fact that makes these kinds of attacks extremely dangerous. In this paper, we briefly explain the various attacks like SSL sniffing, MD5 collide certificate, SSL striping, SSL Null prefix, online certificate status protocol (OCSP),change cipher spec- dropping, KeyExchangeAlgorithm-spoofing, and version rollback attacks. Since most of the discussed attacks target browsers and the way they manage certificates, an evaluation on the rate of success of the SSL attacks when various browsers are used is also presented. We also discuss the origin and the conditions for the attacks to happen successfully. We further discuss in some detail the two very recent attacks BEAST (Browser Exploit Against SSL/TLS) and CRIME (Compression Ratio Info-leak Made Easy).
Show more

10 Read more

Vol 4, No 1 (2018)

Vol 4, No 1 (2018)

Although several works have shown the efficiency of the SSL/TLS protocol, few have focused on its implementation using the Java Secure Socket Extension. The JSSE allows the implementation of secure sockets for both servers and clients. Moreover the JavaMail Application Programming Interface allows flexibility in designing the e-mail applications for testing security attacks. This paper provides a detailed overview of the implementation of a secure e- commerce and e-mail application using the TLS/SSL protocols in Java. The application was tested with both MITM and spoofing attacks. This paper is organized in the following way: Section II gives an overview of the SSL security mechanism and security attacks on e-
Show more

14 Read more

A Framework for Preservation of Cloud User’s Data Privacy

A Framework for Preservation of Cloud User’s Data Privacy

iii) Browser Attack: This attack which results in data stealing is committed by sabotaging the signature and encryption during the translation of SOAP messages in between the web browser and web server, causing the browser to consider the adversary as a legitimate user and process all requests, communicating with web server [10]. For authenticating the clients, current web browsers rely upon SSL/TLS as they are not able to apply WS-Security. Nevertheless, SSL/TLS only supports

10 Read more

A Framework for Preservation of Cloud User's Data Privacy

A Framework for Preservation of Cloud User's Data Privacy

Point-to-point communications and this makes the authentication process insecure. Also SSL/TLS has been broken by Marlin Spike using “Null-Prefix Attack” and attackers are able [r]

9 Read more

SECURITY PROTOCOLS FOR INTERNET: A REVIEW

SECURITY PROTOCOLS FOR INTERNET: A REVIEW

Today internet is mostly used by every individuals, every organization for different purpose. Internet can be used for data transfer, shopping, online transaction etc. Many organizations still not connected to internet due to security issues on the internet. For securing the internet transaction and data transfer SET, SSL/TLS protocols are discussed in this paper. SSL provide tunnel between sender and receiver and proved as best protocol for online security whereas SET provides authentication of users by digital certificates. Both protocols have their own domain for usage and their own encryption procedure. With the help of this paper one can able to understand about SSL/TLS and SET protocols.
Show more

10 Read more

Implementation of a New Cipher in OpenSSL Environment the Case of INDECT Block Cipher

Implementation of a New Cipher in OpenSSL Environment the Case of INDECT Block Cipher

In order to successfully negotiate usage of IBC, both client and server must use a modified version of library. If one of the peers uses original SSL/TLS library (without IBC ciphersuites), then the most preferred ciphersuite which is known by both peers will be agreed (usually a ciphersuite containing the AES algorithm). This means that it is possible to establish a secure connection between peers which are using modified and original libraries.

9 Read more

User Experience Testing: A Case Study for Mobile Devices-

User Experience Testing: A Case Study for Mobile Devices-

Once the TLS/DTLS handshake is completed, application sends the data to OpenSSL, which fragments it, optionally compresses the data, adds Message Authentication Code (MAC), encrypts the UDT data and appends the SSL record header and send it to UDT framework. It adds its own header to the encrypted data and sends the data through the UDP channel. On the other side, UDT header is stripped off and passed to TLS/DTLS where the data is decrypted, verifies MAC, decompresses it if applied, assembles the fragments and pushes the data to the UDT application. Authentication of client server is performed using asymmetric cryptography whereas confidentiality, integrity and message authenticity is provided using symmetric cryptography [21]–[23].
Show more

9 Read more

Survey on File Security Using Encryption Technique over Public Cloud Environment

Survey on File Security Using Encryption Technique over Public Cloud Environment

A top secret encryption method in a cloud storage involve protecting data in transit using Secure Sockets Layer (SSL)/Transport Layer Security (TLS) for data transfer to create a secure tunnel protected by 128/256-bit or higher Advanced Encryption Standard (AES) encryption. Once it reaches the cloud storage, it is protected using 128/256-bit AES encryption at rest. The data in process (in-use) is protected using 128/256-bit AES encryption or SHA.

6 Read more

Studying TLS Usage in Android Apps

Studying TLS Usage in Android Apps

Transport Layer Security (TLS), has become the de-facto standard for secure Internet communication. When used correctly, it pro- vides secure data transfer, but used incorrectly, it can leave users vulnerable to attacks while giving them a false sense of security. Numerous efforts have studied the adoption of TLS (and its pre- decessor, SSL) and its use in the desktop ecosystem, attacks, and vulnerabilities in both desktop clients and servers. However, there is a dearth of knowledge of how TLS is used in mobile platforms. In this paper we use data collected by Lumen, a mobile measurement platform, to analyze how 7,258 Android apps use TLS in the wild. We analyze and fingerprint handshake messages to characterize the TLS APIs and libraries that apps use, and also evaluate weaknesses. We see that about 84% of apps use default OS APIs for TLS. Many apps use third-party TLS libraries; in some cases they are forced to do so because of restricted Android capabilities. Our analysis shows that both approaches have limitations, and that improving TLS security in mobile is not straightforward. Apps that use their own TLS configurations may have vulnerabilities due to developer inexperience, but apps that use OS defaults are vulnerable to certain attacks if the OS is out of date, even if the apps themselves are up to date. We also study certificate verification, and see low prevalence of security measures such as certificate pinning, even among high- risk apps such as those providing financial services, though we did observe major third-party tracking and advertisement services deploying certificate pinning.
Show more

13 Read more

Analysis on Data Protection in Cloud Computing Using Data categorization Procedure

Analysis on Data Protection in Cloud Computing Using Data categorization Procedure

A top secret encryption method in a cloud storage involve protecting data in transit using Secure Sockets Layer (SSL)/Transport Layer Security (TLS) for data tran[r]

6 Read more

Administrator’s Guide

Administrator’s Guide

TLS (Transport Layer Security) is the latest, standardized version of the SSL protocol. The Internet Engineering Taskforce (IETF) renamed it TLS when it took over responsibility for the development of SSL as an open standard. TLS secures data communications by providing server authentication, encryption of the data stream, and message integrity checks. Because there are only minor technical differences between SSL Version 3.0 and TLS Version 1.0, the certificates you use for SSL in your MetaFrame installation will also work with TLS. Some organizations, including US government organizations, require the use of TLS to secure data communications. These organizations may also require the use of validated cryptography, such as FIPS 140. FIPS 140 (Federal Information Processing Standard) is a standard for cryptography.
Show more

148 Read more

Managing Cisco Network Security pdf

Managing Cisco Network Security pdf

Application Layer Security Pretty Good Privacy PGP Secure HyperText Transport Protocol S-HTTP Transport Layer Security Secure Sockets Layer SSL and Transport Layer Security TLS Secure Sh[r]

497 Read more

Interannual surface evolution of an Antarctic blue-ice moraine using multi-temporal DEMs

Interannual surface evolution of an Antarctic blue-ice moraine using multi-temporal DEMs

This research has employed a combination of TLS and UAV-based SfM-MVS photogrammetry and 3-D differenc- ing methods to quantify the topographic evolution of an Antarctic blue-ice moraine complex over annual and intra- annual timescales. The segmentation of lateral and verti- cal surface displacements reveals site- and local-scale pat- terns of geomorphometric moraine surface evolution beyond a threshold level of detection (95 % confidence), including largely persistent vertical uplift across the moraine complex, both within a single season and between seasons. This per- sistent uplift is interspersed with areas (and periods) of sur- face downwasting, which is largely confined to the rear of the moraine basin for both differencing epochs and to ice- marginal regions within season 1; the latter we deem as non- significant. Analysis of lateral displacement vectors, which are generally of a much smaller magnitude than vertical dis- placements, provide further insights into moraine surface evolution.
Show more

15 Read more

Show all 238 documents...