Category Archives: Security/Cryptography

Encrypting text at the command line with GnuPG

Storing GnuPG content of any kind (that is, plain text to be encrypted, encrypted text to be decrypted, even public keys from co-respondents) on disk can result in the same kind of vulnerabilities associated with storing any sensitive data on … Continue reading

Posted in Command Line, GNU Privacy Guard, How-To, Open source applications, Open source software, Practical Cryptography, Secure computing, Security/Cryptography | Comments Off on Encrypting text at the command line with GnuPG

Managing shell command history in OS X/Linux

One of the many benefits of using the command line shell in OS X or Linux (or any *nix or similar OS) is that the operating system keeps a history of all the commands you use, storing them in a … Continue reading

Posted in Command Line, computer science, Editors, How-To, Linux Tech Talk, Open source software, Programmer's Tools, Secure computing, Security/Cryptography, Ubuntu Linux, Utilities | 1 Comment

Using diff

diff is a *nix command that takes two files and compares them, reporting on the differences between them. For example: $ diff foo.bar foo.bar $ When the files are identical, no output is generated (as in this case, comparing a … Continue reading

Posted in Command Line, computer science, How-To, Open source software, Practical Cryptography, Programmer's Tools, Secure computing, Security/Cryptography, Utilities | Comments Off on Using diff

GPG tutorials

Paul Heinlein’s GPG Quick Start (very basic, but useful) The GNU Privacy Handbook (more a how-to for gpg, plus concepts) GnuPG FAQ (some helpful things here, but pages more likely will be found via google) Using the GNU Privacy Guard … Continue reading

Posted in Practical Cryptography, Secure computing, Security/Cryptography | Comments Off on GPG tutorials

Encryption with Ubuntu, Two Looks

There are tons of reasons to use encryption on your computers, especially if you store sensitive information on them. But I won’t go into that stuff right now. I will point you to a couple of how-to pages that explain … Continue reading

Posted in How-To, Security/Cryptography, Ubuntu Linux | Comments Off on Encryption with Ubuntu, Two Looks