SSL (Secure Sockets Layer) and/or TLS (Transport Layer Security)

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-3
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0answers
10 views

Secure server not working with mac mail and microsoft outlook [on hold]

Secure server Now days we are getting lot of Domain advertisements on Facebook .Seeing those I took two domains on line after one month of follow up I can not configure it on my Microsoft outlook as ...
0
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1answer
52 views

How do SSL/TLS certificates work?

I'm trying to understand how SSL/TLS certificates work, but I'm missing something. I have obtained my current understanding from this website: ...
5
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2answers
654 views

Website: Pre-Shared-Key Authentication

We have this web-application with high valuable (business) data. All communication is encrypted through TLS/SSL. While I consider this a really safe protocol, it can still be compromised if someone ...
1
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1answer
47 views

DTLS Session Keys life time

I have a UDP client application that is long-lived: Ideally, it keeps streaming to a server forever. I'm using Datagram Transport Layer Security (DTLS) to secure the UDP communication. How often ...
7
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2answers
256 views

How can we revoke all ssl certificates issued for our domain?

After having the hostmaster@domain.com email compromised, we found that someone issued a Domain Validated SSL certificate for our domain. Now we want to have all such certificates revoked. Is there ...
2
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1answer
104 views

TLS WG Charter and Security Goals

I was looking at the TLS Working Group Charter. I noticed that confidentiality and integrity of messages for those who desire it are not goals for the group. Naively, I believe confidentiality and ...
0
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2answers
37 views

client SSL authentication .pem file and .crt files

So I have minimal knowledge of security really but I'm a primary developer on an application which handles some sensitive data that we want to be secure. The application communicates with one other ...
0
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1answer
20 views

EAP-TLS fragmentation implementation

I am trying to build an EAP-TLS client. The handshake I have to deal with involves receipt of fragmented messages from the RADIUS server. As a part of the client reply, I have to construct a ...
0
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2answers
69 views

Encryption mechanism

I want to send data over the Internet securely. For that, I am using an public key of the receiver to encrypt the data. In this case, if an intruder in the network modifies the data, like placing the ...
1
vote
5answers
242 views

Secure login feature with low CPU power

I'm developing a program that contains a login function in C++. The problem is that I don't know how to develop it in my situation. I want to run the software on a raspberry pi, it only has a CPU ...
2
votes
1answer
390 views

HTTP Reverse Proxy: Correct way to do SSL to backend

If I have a HTTP reverse proxy that communicates with it's backends in an untrusted datacenter, or across datacenters, I would want to use HTTPS in the backend, as talked about here: Reverse Proxy ...
3
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1answer
183 views

Exporting data beyond a cryptographic boundary

Scenario We're working on putting a FIPS 140-2 compliant SQL database on a dedicated machine behind the internal firewall of an organization, and need the capacity to push a specific document or ...
1
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0answers
33 views

Self signed certificate on application server behind web front end

I have a Tomcat application which is front ended by an Apache web server - end users connect to the Apache web server (never directly to Tomcat) and Apache has a valid, externally issued SSL etc The ...
12
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5answers
2k views

Can sites which check your password as you type pose a security risk?

Some sites that I use check my password as I type it into the login (not registration) form. So, for example, to begin with I might have: Username: sapi ✓ Password: passw × and by the time I've ...
0
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1answer
22 views

How is the Premaster secret used in TLS generated?

I believe that it uses some combination of the random values sent in the hello messages. From RFC 2246: (TLSv1.0) RSA encrypted premaster secret message Meaning of this message: If RSA is ...
2
votes
2answers
107 views

When visiting an HTTPS page for the first time, why isn't there a prompt for the certificate?

I installed a fresh Windows 7. I wonder why when I visit website using HTTPS, I do not get asked to accept their certificate like shown on this picture:
3
votes
1answer
52 views

How to force browsers to accepte all further SSL certificates

I am using the last versions of IE, Firefox and Google Chrome web browsers on Windows 8. How can force these browsers to accept automatically the SSL certificates of any website I will visit ? I know ...
26
votes
4answers
21k views

What's an easy way to perform a man-in-the-middle attack on SSL?

I'd like to perform a man-in-the-middle attack on SSL connections between clients and a server. Assuming the following: I've got a certificate that the client will accept, via poor cert validation ...
4
votes
2answers
115 views

Safety of using online proxy?

Lets say for example I have to use a public online proxy like https://www.zend2.com to load a php webpage controlled by me containing sensitive data over https. How would i make sure that the proxy ...
0
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1answer
36 views

SSL / TLS Renegotiation Handshakes MiTM Plaintext Data Injection- medium or low risk?

This is a Nessus finding, which is considered medium by default. Basically it may allow for some plaintext injection which may allow for some man in the middling. My question is, has these been ...
2
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1answer
38 views

Inconsistant browser warnings for SSL

I am doing a penetration test at the moment, where the client has deep packet inspection for SSL enabled (my guess), as every SSL connection seems to being MITMed. Now, some HTTPS sites, like Gmail, ...
2
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3answers
71 views

“Web of trust” for self-signed SSL certificates?

SSL certificates, generally speaking, use a "chain of trust" model - a trusted certificate authority (CA) gets proof that a company such as Amazon owns amazon.com and issues an SSL certificate. ...
2
votes
1answer
1k views

Do the BEAST and CRIME attacks apply to an IMAP service?

While setting up the Dovecot IMAP service, I noticed that the default parameters are not optimal, it allows SSLv3 for example. Using Thomas Pournin's TestSSLServer.java program, I saw the following: ...
43
votes
4answers
28k views

What is certificate pinning?

I'm superficially familiar with SSL and what certs do. Recently I saw some discussion on cert pinning but there wasn't a definition. A DDG search didn't turn up anything useful. What is certificate ...
26
votes
4answers
19k views

How do I secure my REST API?

In Detail here's the problem: I'm building an Android app, which consumes my REST API on the back-end. I need to build a Registration and Login API to begin with. After googling for a while, I feel ...
14
votes
7answers
7k views

How do I check if a gmail/gtalk SSL certificate is valid?

Pidgin started prompting me to accept/reject new gtalk SSL certificate a few days ago and I am not able at the moment to tunnel the traffic to check if it would continue to happen or if it wouldn't ...
0
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0answers
72 views

Can not open my yahoo email. The connection was interrupted [closed]

Since yesterday, I can not open my yahoo mail. I get connection interrupted message (see pic). Or, some times I get another similar message saying the connection was reset. I tried another PC, same ...
0
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1answer
48 views

how can i bypass close_notify in ssl in firefox? [closed]

i am trying to login to my yahoo mail, but no avail. i recently discovered after monitoring some traffic that the dumb yahoo server doesn't send a close_notify response but just acts ignorantly and ...
2
votes
3answers
2k views

Why different key exhange techniques for ssl key exchange?

During ssl key exchange, I have read that sending the symmetric key to the server encrypted with the server's public key is an old technique. Now for key echange Diffie hellman and other techniques ...
3
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0answers
38 views

What's stopping DANE? [closed]

As I understand it, DANE (RFC 6698) is a promising candidate for addressing issues with current TLS Trust Anchors (i.e. Trust Anchors). My attempt at explaining the issue: Currently, CAs are ...
2
votes
5answers
404 views

Does the SSL termination happen with the ISP or a mobile service provider? [duplicate]

Is it true that when I connect to a site over HTTPS , my mobile service provider or the ISP gets to snoop in the communication? Can they play MITM?
1
vote
2answers
75 views

Identifying suspicious encrypted traffic [duplicate]

Firstly, I welcome a better title for this question. I admit I'm a security novice. I'm trying to determine whether I have malware and what that malware may be doing. Using Wireshark, I see several ...
5
votes
2answers
118 views

Security sanity check

A company whose services I'm trying to integrate uses this protocol: An AES key is embedded in an Android library. To authenticate itself, the library sends a SHA1 hash of the key over plain HTTP. ...
1
vote
2answers
576 views

Are there any strange things with google.com over HTTPS?

So I'm always browsing the web through Privoxy using minimum these rules: vi /etc/privoxy/user.action { +redirect{s@http://@https://@} } .chrome.google.com .code.google.com .docs.google.com ...
0
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1answer
22 views

In TLS1.2 AES-GCM mode, what happened when input is not exactly the multiple of its block size?

I know that AES-GCM mode does not need padding, and its output are exactly the length of input data plus the tagging. But I am a little bit lost, as AES itself is block cipher, it could only operate ...
0
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2answers
53 views

HTTPS - ssl error bad cert domain

When I try to visit some websites with HTTPS , I get the error that the SSL is self-signed and that the SSL is only valid for another domain, and that SSL is actually invalid. If the SSL is valid only ...
2
votes
1answer
71 views

Proper way to ask for parameters renegotiation with SSL

Given a specific SSL/TLS connection, I would like to know what is the proper way to launch a parameter renegotiation, asked from client side. 1) Are they any requirements from the previous handshake ...
0
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3answers
46 views

Using client certificate to authenticate an app

I'm building a backend for the mobile app with a public-facing HTTP API endpoint. Despite being publicly visible, this endpoint is only meant to be used by my app, i.e. I don't want people to send ...
5
votes
2answers
127 views

How can I enable opportunistic encryption for my web-site?

As per an honourable mention in an answer for « Why self-signed https is less trustworthy than unencrypted http? », it appears that there are already two post-Snowden drafts that have to ...
1
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2answers
124 views

Online Shopping password keylogger risk

Suppose I do an online shopping they are asking me to enter my card details like four digit number(whatever related to that) and they are asking me to enter the PIN number too. If I enter all this ...
1
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1answer
31 views

series of SSL errors across multiple sites — reason for concern? [closed]

Rebooted my rMBP late 2013 recently, and saw a set of SSL errors (unable to verify certificate) across a wide range of sites (google, gmail, mubi, medium) and also in the Calendar app as it tried to ...
5
votes
2answers
390 views

Trustworthy Android recovery image that allows rooting?

I have an unlocked but not rooted Android device (Nexus 7 2013 WiFi "flo", legitimately unlocked using fastboot oem unlock from an x86 computer). Neither adb root nor adb shell followed by su let me ...
1
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1answer
53 views

Questions about self-signed Certificates' Fingerprints and Client-Server Interaction through SSL

I have some questions about how the fingerprint function is performed. First of all, I have some knowledge about cryptography. However it seems to do not be good enough to understand hundreds of ...
1
vote
1answer
239 views

VPN Client - Addtional Security Layer or a Useless Feature

I have a corporate web portal which is used for staff collaboration including a web-based mail interface connected to MySQL Database, corporate calendar, file storage, customer contacts data with ...
1
vote
3answers
94 views

I see a warning notification “site not verified”

Utill yesterday I never saw any warnings on secure sites like twitter and many others but currently I am getting an exclamation in my chrome saying identity not verified but https is indeed used, ...
65
votes
5answers
6k views

How can my employer be a man-in-the-middle when I connect to Gmail? [duplicate]

I'm trying to understand SSL/TLS. What follows are a description of a scenario and a few assumptions which I hope you can confirm or refute. Question How can my employer be a man-in-the-middle when ...
0
votes
1answer
128 views

Does an HTTPS proxy encrypt traffic between proxy client and server for HTTP requests?

To bypass censorship in a DIY fashion, I plan to set up private proxies for my personal use. One of the possible methods I would try is to use an HTTPS proxy (not a web proxy, to be explicit) hosted ...
1
vote
1answer
106 views

Help removing my domain from blacklists

I bought a domain few days before. but it came to my attention that my domain has been blacklisted by many antivirus programs and search engines as the domain for previously purchased by somebody and ...
34
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12answers
4k views

How feasible is it for a CA to be hacked? Which default trusted root certificates should I remove?

This question has been revised & clarified significantly since the original version. If we look at each trusted certificate in my Trusted Root store, how much should I trust them? What factors ...
1
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4answers
121 views

Are there any reasons for using SSL over IPSec?

is it recommended to use both protocols together? In which situation?