To use a salt (randomly generated) when encrypting. Only use this if you need to sendĭata in the form of text format via email etc. This will likely increase theįile size for non-text data. Is set then the input data is base64 decoded before being Place the data is base64 encoded after encryption. Read the password from the first line of instead ofīase64 process the data. Plain-text on the command line and will likely be recorded in Not considered secure because your password appears in

The password is used to derive the actual key which Usually you can leave this out and you will be prompted for a Only use this if you want to pass the password as an argument. Įxplanation of most useful parameters with regards to your question: -eĮncrypt the input data: this is the default.

Your best source of information for openssl enc would probably be: Ĭommand line: openssl enc takes the following form: openssl enc -ciphername Note: You will be prompted for a password when encrypting or decrypt. To Decrypt: openssl enc -d -aes-256-cbc -in encrypted.data -out un_encrypted.data To Encrypt: openssl enc -aes-256-cbc -in un_encrypted.data -out encrypted.data You likely want to use gpg instead of openssl as mentioned above but to answer the question using openssl: And use -no-symkey-cache flag for no cache. To Decrypt: gpg -output un_encrypted.data -decrypt encrypted.data To Encrypt: gpg -output encrypted.data -symmetric -cipher-algo AES256 un_encrypted.data To use GPG to do the same you would use the following commands: Though you have specifically asked about OpenSSL (see 'Using OpenSSL' below for OpenSSL solution) you might want to consider using GPG instead for the purpose of encryption based on this article OpenSSL vs GPG for encrypting off-site backups? Using GPG (Better Alternative to OpenSSL)

Rsa crt decrypt python