Encryption is the process of scrambling data so it can be read only be someone with the means (or the key) to return it to its original state. Modern encryption scrambles data by using a secret value or key. The data can then be decrypted, or made readable, by using the corresponding encryption key. Encryption keeps data safe. It stops criminals or any unauthorized person from stealing or tampering with information. It can be used to ensure you know who you are communicating with online and to sign digital documents. Encryption protects information when browsing the internet, using a credit or debit card either in store or online or via a mobile app and when using secure messaging apps. Companies use encryption to protect their sensitive information, like customer information, trade secrets and financial records. While encryption may not prevent a data breach it does make the data that is leaked or stolen unreadable and therefore useless should it fall into the wrong hands.
An electronic signature is an electronic representation of a proof of consent, such as a finger-drawn signature on a tablet, a scanned signature, or a click on an "I agree" button on a webpage. Electronic signatures can be legally accepted in many countries under specific conditions.
A digital signature is a high-assurance type of electronic signature. It is a cryptographic operation on a document, performed using a digital certificate that contains the identity of a natural person (e.g. an individual). The digital signature binds the content of the document to the person, and prevents tampering.
A digital seal is a high-assurance type of electronic signature. It is a cryptographic operation on a document, performed using a digital certificate that contains the identity of a legal person (e.g. an organization). The digital seal binds the content of the document to the organization, and prevents tampering.