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Techniques and thoughts worth documenting.
Thursday, January 28, 2021
Manually verifying RSA SHA Signature in Java using Cipher
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The post below may be helpful in understanding how a signature is generated and verified. Sample code: import java.security.KeyPair; import ...
Friday, October 11, 2019
BLOB BFILE SHA256 calculation from Oracle Database using PL/SQL SQL by way of Java stored procedure
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The code below demonstrates a method to calculate from the Oracle Database an SHA-256 checksum of a BLOB or BFILE by way of a Java stored p...
Friday, July 10, 2015
Java SSL HttpUrlConnection Performance Slow using TLS 1.0 with CBC
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The fix Oracle implemented in the JVM to combat the BEAST attack can have a significant performance impact when using TLS 1.0 with CBC. Thi...
Tuesday, May 6, 2014
Java split a large file – sample code – high performance
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Sample Java code to split a source file into chunks. I needed a quick way to split big log files in to manageable chunks that could subs...
2 comments:
Thursday, February 13, 2014
Two-way SSL guide: Java, Android, Browser clients and WebLogic Server
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The notes below outline the steps I took to test two-way SSL from scratch using updated keytool functionality found in Java 7 . Rather tha...
1 comment:
Thursday, August 22, 2013
Synology Remote Shutdown Poweroff BusyBox
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Being the energy conserving environmentalist I am (read – tightass) I look for ways to reduce unnecessary power consumption. I have quite a ...
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