Table of Contents

cf-secret

Table of Contents

cf-secret encrypts and decrypts files using CFEngine keys.

Files can be encrypted for one or more public keys. A matching private key is required for decryption.

Command reference

  --help        , -h       - Print the help message
  --manpage     , -M       - Print the man page
  --debug       , -d       - Enable debugging output
  --verbose     , -v       - Enable verbose output
  --log-level   , -g value - Specify how detailed logs should be. Possible values: 'error', 'warning', 'notice', 'info', 'verbose', 'debug'
  --inform      , -I       - Enable basic information output
  --key         , -k value - Comma-separated list of key files to use (one of -k/-H options is required for encryption)
  --host        , -H value - Comma-separated list of hosts to encrypt/decrypt for (defaults to 'localhost' for decryption)
  --output      , -o value - Output file (required)

Example encrypting and decrypting data

First, let's create a file that contains some content we want to encrypt.

> $ cf-secret --help > /tmp/cf-secret.help

Next, let's encrypt the file for the public key used by the host. Run the following command to encrypt the file.

> $ sudo cf-secret encrypt /tmp/cf-secret.help \
                   --output /tmp/cf-secret.help.cfsecret \
                   --key /var/cfengine/ppkeys/localhost.pub

Then, inspect file. Note the file contains a header that indicates the key digest identifying the public key for which the file was encrypted.

> $ sudo cat /tmp/cf-secret.help.cfsecret
Version: 1.0
Encrypted-for: SHA=0df59dfd5516a0a66aad933871036fa0ad909d251da682a41775d60db092f154

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Finally, decrypt the file.

> $ sudo cf-secret decrypt /tmp/cf-secret.help.cfsecret \
                   --key /var/cfengine/ppkeys/localhost.priv \
                   --output /tmp/cf-secret.help.decrypted

> $ sudo diff /tmp/cf-secret.help /tmp/cf-secret.help.decrypted && echo "No difference" || echo "Difference detected"

No difference