decryptorservice

Simple helper daemon to decrypt strings via Web API.

Usage

The started binary reads a configuration file with its settings.

The location of the file can be given in the environment variable ConfigFile or it will try ./config.yml and /run/secrets/config.yml

config.yml:

IpAddress: 127.0.1.15          # IP Adress of the server
Port: 8167                     # Port of the server
DecPrivateKeyFile: privkey.pem # Decryption key
DecPrivateKeyPassword: secret  # Password for decryption key (optional)
TLSCertFile: pubcert.pem       # To activate TLS, CertFile and ...
TLSKeyFile: privkey.pem        # key must be given

The service is queried via JSON in a POST request:

{
  "c": "base64OeapSha1",
  "ctxt": "ZU1QVE...aIce6Ryvwkwey8Fkw="
}

With "c" selecting the cipher (only base64OeapSha1 supported for now) and "ctxt" holding the ciphertext.

The server answers with the cleartext in JSON:

{
  "Txt":"Contrary to popular belief, Lorem Ipsum is not simply random text.\n",
  "Error":0,
  "Errmsg":""
}

in case of decryption errors:

{
  "Txt":"",
  "Error":1,
  "Errmsg":"decryption failed: crypto/rsa: decryption error"
}