Archive for 'OpenSSL'

Ever wanted to check your POP3 email from the command line?

I have an article titled debugging SSL in the December issue of SysAdmin magazine. The article covers techniques to debug SSL communications, and includes several useful examples. One of the examples shows how openssl can be used to check the operational status of a POP3s server. This is accomplished by feeding POP3 commands to openssl [...]

Encrypting data with OpenSSL

I often find myself needing to protect sensitive data, and usually turn to OpenSSL for help. OpenSSL support a plethora of symmetric key encryption algorithms (AES, DES3, Blowfish, RC4), and comes with a variety of Operating Systems. To encrypt a file named private, we can pass one of the available symmetric key algorithms to OpenSSL: [...]

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