In Symmetric-key encryption technique single key is used to encrypt and decrypt the message.
While in public-key (or asymmetric) encryption technique, uses one key (private key) to encrypt a message while another key (public key) to decrypt the message. Public-key encryption uses the combination of a private key and a public key. The private key is kept secret and is only known to the person who encrypts the message, while the public key is freely disseminated which helps to verify the message. To decode an encrypted message, receiver uses the public key of the sender and his own private key.
Encryption/Decryption is advisable while carrying out any kind of sensitive transaction, such as a online purchases or the communication of a company sensitive documents between different departments in the organization etc.
Encryption of the data ensures its secrecy and/or privacy. E-Lock Digital Signature products and solutions enable users to sign the electronic documents digitally and encrypt them which assures the user of data integrity, confidentiality, security and non-repudiation of documents and transactions. E-Lock also provides the solutions which are PKCS#7 compliant and can be integrated with various online applications like e-tendering, e-banking imparting security to the data transactions online.