jbcrypt

Decode the Bcrypt encoded password in spring security to Deactivate User account

由 谁都会走 提交于 2020-06-09 08:43:14
问题 I am working on web application project in Spring Hibernate MVC. I am storing encoded password in the database using Bcrypt algorithm in Spring security. Now I want to get that encoded password to be decoded to deactivate Use account where in I am giving user email and password to verify before user deactivate the account. I have problem in getting decoded password. Can anyone help me to get out of it or any alternate solution for my requirement? 回答1: The problem is solved by using below code

jBCrypt 0.3 C# Port (BCrypt.net)

由 戏子无情 提交于 2019-12-24 00:56:00
问题 After looking into a bug in the original jBCrypt v0.1 C# port: BCrypt.net (Related Question). I decided to compare the new jBCrypt code against the old C# port to look for discrepancies and potential issues like the related question's bug. Here is what I've found: // original java (jBCrypt v0.3): private static int streamtoword(byte data[], int offp[]) { int i; int word = 0; int off = offp[0]; for (i = 0; i < 4; i++) { word = (word << 8) | (data[off] & 0xff); off = (off + 1) % data.length; }

Invalid salt revision when comparing Python generated hash with raw password in Java

由 回眸只為那壹抹淺笑 提交于 2019-12-11 15:30:03
问题 So I've created a database which stores user information and their hashed password, which is hashed using a Python script using the bcrypt module. Now to login using my Java client, I am using the JBCrypt library included as a Maven dependency in my IntelliJ project. It retrieves the hash and the database connection works perfectly, the only issue is that it throws this error: Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Invalid salt revision at org.mindrot

简析Jenkins专有用户数据库加密算法

由 烈酒焚心 提交于 2019-12-09 22:00:08
Jenkins访问控制分为：安全域（即认证）与授权策略。 其中，安全域可以采用三种形式，分别为：Jenkins专有用户数据库、LDAP、Servlet容器代理。 Jenkins专有用户的数据信息存放位置： <JENKINS_HOME> /users/ 每个用户的相关信息存放在config.xml文件中： <JENKINS_HOME> /users/ <user> /config.xml 在config.xml文件中 passwordHash节点 可以看到用户名加密后的密文哈希值 那么，它是用何种加密方式加密的呢？可否解密密文得到明文呢？ 在 github 上查看其源码，通过关键字 #jbcrypt 搜索定位到 HudsonPrivateSecurityRealm.java 这个文件 HudsonPrivateSecurityRealm.java详细路径是：jenkins/core/src/main/java/hudson/security/HudsonPrivateSecurityRealm.java 通过分析该源码得知： 1、密文的格式为：salt: encPass， 其中以#jbcrypt表示salt作为数据头 2、明文通过jbcrypt算法得到密文 encPass 关于 jbcrypt： jbcrypt 是bcrypt加密工具的java实现。 它的API非常简单，DEMO如下

Is Spring Security's BCrypt implementation vulnerable?

由 半世苍凉 提交于 2019-12-08 06:45:51
问题 A security audit at our company found that the prefix of our bcrypt hashes are "$2a$". According to [1] and [2] this could indicate that an older, vulnerable bcrypt implementation is used. So - here my questions: Does Spring Security's bcrypt implementation contain the vulnerability? Does Spring Security support the "$2x$" and "$2y$" prefixes? References: [1] http://blog.ircmaxell.com/2012/12/seven-ways-to-screw-up-bcrypt.html [2] http://www.openwall.com/lists/oss-security/2011/06/21/16 回答1:

Variable and degrading performance when using jbcrypt

由 放肆的年华 提交于 2019-12-07 02:05:59
问题 I'm using jbcrypt to hash passwords in a project. Performance is about 500 ms when validating passwords on the hardware I am using (log_rounds set to 12). However, after a while with regular use the performance time suddenly drops to a whopping 15 seconds. The drop is very sudden with no buildup and stays constant until the process is restarted. Profiling shows that the extra time is used in the key(..) method. Source: http://jbcrypt.googlecode.com/svn/tags/jbcrypt-0.3m/src/main/java/org

Variable and degrading performance when using jbcrypt

由 为君一笑 提交于 2019-12-05 06:04:58
I'm using jbcrypt to hash passwords in a project. Performance is about 500 ms when validating passwords on the hardware I am using (log_rounds set to 12). However, after a while with regular use the performance time suddenly drops to a whopping 15 seconds. The drop is very sudden with no buildup and stays constant until the process is restarted. Profiling shows that the extra time is used in the key(..) method. Source: http://jbcrypt.googlecode.com/svn/tags/jbcrypt-0.3m/src/main/java/org/mindrot/jbcrypt/BCrypt.java This method only calculates the hash using basic functions like xor, and, shift

BCrypt.checkpw() Invalid salt version exception

由 岁酱吖の 提交于 2019-12-04 10:11:48
问题 I'm trying to implement authentication using BCrypt, in my Play 2.1. Java application, but I'm getting Invalid salt version exception when I'm trying to authenticate the user. This is my stack trace play.api.Application$$anon$1: Execution exception[[IllegalArgumentException: Invalid salt version]] at play.api.Application$class.handleError(Application.scala:289) ~[play_2.10.jar:2.1.0] at play.api.DefaultApplication.handleError(Application.scala:383) [play_2.10.jar:2.1.0] at play.core.server
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