Thanh Pham Minh pmint93

## tcpdump.md

      
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                pmint93
                / tcpdump.md
            
            
              Created
              July 31, 2023 14:23
                — forked from dacr/tcpdump.md
            
              
                tcpdump cheat sheet / published by https://github.com/dacr/code-examples-manager #dc012b03-0968-4a22-adec-c9483bdab8c6/9af294dd1dbac76b4ac789383de5794632247810
              
          
## self-signed-certificate-with-custom-ca.md

      
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                pmint93
                / self-signed-certificate-with-custom-ca.md
            
            
              Created
              April 11, 2019 09:15
                — forked from fntlnz/self-signed-certificate-with-custom-ca.md
            
              
                Self Signed Certificate with Custom Root CA
              
          
    Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!
openssl genrsa -des3 -out rootCA.key 4096

  
## encrypt_openssl.md

      
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                pmint93
                / encrypt_openssl.md
            
            
              Created
              January 5, 2018 04:28
                — forked from dreikanter/encrypt_openssl.md
            
              
                File encryption using OpenSSL
              
          
    Symmetic encryption

For symmetic encryption, you can use the following:
To encrypt:
openssl aes-256-cbc -salt -a -e -in plaintext.txt -out encrypted.txt

To decrypt: