message digest as output, here to SHA1 The algorithm is entered as a message.The HMAC algorithm is used because only the user knows the correct input key, and therefore the output is unique, and the algorithm can be simply expressed as:
HMAC = SHA1 (Secret + SHA1 (secret + input))
In fact, TOTP is a superset of HMAC-OTP (one-time password generation based on HMAC), except that TOTP takes the current time as input, while HMAC-
key and a message as input, generate a message digest as output, here to SHA1 The algorithm is entered as a message.
The HMAC algorithm is used because only the user knows the correct input key, and therefore the output is unique, and the algorithm can be simply expressed as:
HMAC = SHA1 (Secret + SHA1 (secret + input))
In fact, TOTP is a superset of HMAC-OTP (one-time password generation based on HMAC), except that TOTP takes the curren
NetScaler OTP Application ScenarioNetScaler OTP (one time password) is a two-factor ID card that uses the username password + 6-bit token authentication code to complete the identity authentication. In the previous two-factor solution, Netscalergateway needed to be integrated with a third-party RADIUS server for two-factor authentication. For customers, the cost of additional two factor authentication is re
System: centos6.6Download the Google authentication package Google-authenticator-master (actually just a. zip file, unzip it under Windwos, and then pass it to Linux)#cd/data/google-authenticator-master/libpam#yum Install Libtool–y (this must be installed, or the following installation will be error)#cp makefile.am makefile.in (this file is required when compiling the installation below)#./bootstrap.sh#./co
#注释掉
Selinux=disabled #增加
: wq! #保存退出
Setenforce 0 #使配置立即生效
Second, the installation of the Editing Tool kit
1, the use of CentOS default yum source installation
Yum install wget gcc make
Yum Install Pam-devel Libpng-devel
2, configure Repoforge third party yum source installation mercurial package
CentOS each version, please select the correct version
CentOS 5.x
RPM-IVH http://pkgs.repoforge.org/rpmf
By default, SSH has used secure data communication between remote machines. However, if you want to add another security layer for your SSH connection, you can add Google Authenticator) the two-factor authentication module allows you to enter a random one-time password (TOTP) Verification code when connecting to the SSH server. When you connect, you have to enter the verification code from your smartphone or PC.
Google
Erlang/OTP concurrent programming practices
Basic Information
Original Title: Erlang and OTP in action
Author: (US) Logan, M.) Merritt (E.) (Sweden) Carlsson (R.) [Translator's profile]
Translator: Lian Cheng
Press: People's post and telecommunications Press
ISBN: 9787115285591
Mounting time:
Published on: February 1, July 2012
Start: 16
Page number: 1
Version: 1-1
Category: computer more about Erlang/
[Erlang crisis] (1.3) OTP application, erlangotp1. OTP Applications
Figuring out OTP applications is usually rather simple. They usually all share a directory structure that looks like:
It is usually very simple for developers to figure out OTP applications. They are usually in the same directory and the target struc
Use Google-Authenticator to enhance server SSH LoginFor people who need special encryption, I will provide a method for Google-based encryption.
The procedure is as follows:
Preparation:First, prepare the client on your mobile phone (Baidu download by yourself)Run the following command:Date: view system timeDate-s 03/04/2013 (set the system date to January 1, March 04, 2013)Date-s (set the system time to am)After modification, execute clock-w to forc
Notes SeriesErlang Environment and sequential programmingErlang Concurrent ProgrammingErlang Distributed programmingYawsErlang/otpDate Change Description2014-12-21 A Outline, 1Agenda0 ScopeAround the OTP design principles, record behavioral patterns, supervisory tree concepts, applications, releases and deployments, and a product-level caching solution in [3].1 OTP Design PrinciplesErlang Doc:
Label: Erlang ?? 1. OTP applications
Figuring out OTP applications is usually rather simple. They usually all share a directory structure that looks like:
? It is usually very simple to understand OTP applications. They are usually in the same directory and the target structure is as follows:
DOC /;Ebin/Src/Test/License.txtReadme. mdRebar. config Th
OTP cognitionDynamic password (otp,one-time Password), also known as a one-time password, is the use of cryptography technology in the client and the server through the sharing of a secret authentication technology, is a strong authentication technology, is to enhance the current static password authentication of a very convenient technical means, is an important two-factor authentication technology, Dynami
OTP includes a set of libraries and implementations that can build large-scale, fault-tolerant, and distributed applications, including many powerful tools to implement multiple protocols such as H248,SNMP, the core concept is OTP behavior, and can be seen as an application framework with callback functions as parameters, similar to a Java-EE container. Behavior is responsible for solving the non functional
Function Description:
1. Background check: The default value is assigned if the value is null when validating.
2. Foreground check: Check when the mouse loses focus, if there is a non-null (required) check, non-null authentication is performed first, and if null authentication is empty, the default value is automatically populated after the mouse loses focus.
How to use:
In the rules () function call $rules[] = model::addrule (' cat_sort ', ' Default ', [' value ' = ' 255 ']);
Parameter de
The dynamic password (OTP, one-time password), also known as the one-time password, is an authentication technology that uses the Password Technology to share secrets between clients and servers, it is a strong authentication technology, a very convenient technical means to enhance the current static password authentication, and an important two-factor authentication technology, the dynamic password authentication technology consists of a client used
Copyright belongs to the author.Commercial reprint please contact the author for authorization, non-commercial reprint please specify the source.Xu XiaohuaLinks: http://www.zhihu.com/question/20462696/answer/18731073Source: KnowWhen you turn on Google Login Two step verification (ie Google Authenticator service), users need to enter an additional one-time password generated by the mobile client when they log in.Implementing the Google
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