Types of digital signatures
                     TYPES OF DIGITAL 
SIGNATURES
•A mathematical-statistical technique that proves 
the authenticity of any digital document, software 
or a message. 
• It is basically a digital 
copy of a handwritten 
signature and hence 
offers more security 
during online work. 
•It is also referred to as a 
digital signature 
certificate. 
Types 
Three main types such as-
1. Class 1
2. Class 2
3. Class 3
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Each class has different security levels. 
Class 1 digital signature
•A person can use this signature for private as well 
as for working purposes. 
•It's a basic and simple digital signature, security is 
less than the other 2 signatures. 
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Class 2
•A person can use this signature for private as well 
as for working purposes. 
•This provides good protection against malicious 
activities. 
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Class 3
•A person or any firm can use this signature. 
•These are highly authentic than the other two.
 
•Security provided is also high. 
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Components 
1. Public key
2. Email Id and name
3. The serial number of id
(the digital one)
 
4. Certificate authority signature
Uses
1. Membership sign up
One can use a digital signature for getting a 
membership. 
It keeps securing your data and other login credentials 
safe. 
2. Digitally sign mails
Add digital sign to your outlook or Microsoft mails. 
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Indian government program
•To promote paperless work am digital India 
campaign the Indian government launched a program 
from a digital signature called MCA21. 
•All about ruby on rails development
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