Encryption Service


Encryption Service is used to secure sensitive data that is being stored in the database.


Before you proceed with the documentation, make sure the following pre-requisites are met -

  • Java 17.

  • Kafka server is up and running.

Key Functionalities

Encryption Service offers following features :

  1. Encrypt - The service will encrypt the data based on given input parameters and data to be encrypted. The encrypted data will be mandatorily of type string.

  2. Decrypt - The decryption will happen solely based on the input data (any extra parameters are not required). The encrypted data will have identity of the key used at the time of encryption, the same key will be used for decryption.

  3. Sign - Encryption Service can hash and sign the data which can be used as unique identifier of the data. This can also be used for searching gicen value from a datastore.

  4. Verify - Based on the input sign and the claim, it can verify if the the given sign is correct for the provided claim.

  5. Rotate Key - Encryption Service supports changing the key used for encryption. The old key will still remain with the service which will be used to decrypt old data. All the new data will be encrypted by the new key.

Configuration Details

Following are the properties in application.properties file in egov-enc-service which are configurable.

PropertyDefault ValueRemarks



Master password for encryption/ decryption. It can be any string.



A salt is random data that is used as an additional input to a one-way function that hashes data, a password or passphrase. It needs to be an alphanumeric string of length 8.



An initialization vector is a fixed-size input to a cryptographic primitive. It needs to be an alphanumeric string of length 12.



Default size of Symmetric key.



Default size of Asymmetric key.



Default size of Initial vector.

Deployment Details

  1. Deploy the latest version of Encryption Service

    Note: This video will give you an idea of how to deploy any Digit-service. Further you can find the latest builds for each service in out latest release document here.

  2. Add Role-Action mapping for API’s.


Integration Scope

The Encryption service is used to encrypt sensitive data that needs to be stored in the database.

Integration Benefits

  • Can perform encryption without having to re-write encryption logic everytime in every service.

Steps to Integration

  1. To integrate, host of encryption-services module should be overwritten in helm chart.

  2. /crypto/v1/_encrypt should be added as endpoint for encrypting input data in the system

  3. /crypto/v1/_decrypt should be added as the decryption endpoint.

  4. /crypto/v1/_sign should be added as the endpoint for providing signature for a given value.

  5. /crypto/v1/_verify should be added as the endpoint for verifying whether the signature for the provided value is correct.

  6. /crypto/v1/_rotatekey should be added as endpoint to deactivate the keys and generate new keys for a given tenant.

Reference Docs


API Swagger Documentation

API List

a) POST /crypto/v1/_encrypt

Encrypts the given input value/s OR values of the object.

b) POST /crypto/v1/_decrypt

Decrypts the given input value/s OR values of the object.

c) /crypto/v1/_sign

Provide signature for a given value.

d) POST /crypto/v1/_verify

Check if the signature is correct for the provided value.

e) POST /crypto/v1/_rotatekey

Deactivate the keys for the given tenant and generate new keys. It will deactivate both symmetric and asymmetric keys for the provided tenant.

Play around with the API's : DIGIT-Playground

Last updated

All content on this page by eGov Foundation is licensed under a Creative Commons Attribution 4.0 International License.