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• Encryption and decryption is performed directly by the scripts that can be used outside of JS7 products or by related jobs.
• No JS7 product is involved in encryption/decryption as otherwise the JS7 product would know the keys involved that potentially could be compromised by logging, database persistence etc.
• Performing encryption/decryption by jobs limits the attack surface to the OS process executing the job. The job implementation is controlled by the user who can verify secure operation.

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The basic proceeding works like this:

# Secret [label="   Secret   ",fillcolor="lightskyblue"]
# Encrypted_Secret [label="   Encrypted Secret   ",fillcolor="red"]
# Decrypted_Secret [label="   Decrypted Secret  ",fillcolor="lightgreen"]

# PrivateKey [shape="ellipse",label="Private Key",fillcolor="orange"]
# Certificate [shape="ellipse",label="Certificate / Public Key",fillcolor="limegreen"]

# Secret -> Certificate [label=" encrypt "] -> Encrypted_Secret

# Encrypted_Secret -> PrivateKey [label=" decrypt "] -> Decrypted_Secret

• Consider the parties involved and related use cases:
  • A job executed on Agent A should be parameterized by a variable holding a secret.
  • A job executed on Agent B retrieves a secret that should be forwarded to a job on Agent A and possibly to other Agents too.
• Use of asymmetric keys allows 
  • to create and to store a private key on Agent A.
  • to use Agent A's public key on Agent B or any other system involved.
  • to manage encryption and decryption like this:
    • create a symmetric one-time key and an encrypted copy of the key derived from Agent A's public key.
    • encrypt the value of a variable value with the one-time key.
    • drop the one-time key and forward the encrypted copy of the one-time key and the variable holding the encrypted value to Agent A.
    • only Agent A will be able to decrypt the encrypted one-time key using its private key which reveals the symmetric key required to decrypt the variable's value.

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