E-Sign,
based on Public Key Infrastructure (PKI),
allows users to obtain a digital signature for documents in PDF format and to guarantee
with total security, the integrity of these documents as well as the identity of
the signer.
How does digital signature work?
To digitally sign a document via
E-Sign, perform the following steps:
- Apply a mathematical algorithm called “hash function” to the
document which generates a digital fingerprint. This fingerprint changes in each
document and will be used by the recipient to verify the integrity of the document.
- The user encrypts the fingerprint with a private key, which
authenticates the user as the author of the document. authenticates
the user as the author of the document.
The recipient of the document will use the signer's public key to decrypt the digital
signature and verify that the document has not been modified and that it has been
signed by the owner of the signature.
E-Sign ncludes the following features:
- Author identification: Digital signature uniquely
identifies the signer the same as with a handwritten signature.Digital signature
uniquely identifies the signer the same as with a handwritten signature.
- Document content's integrity: It is possible
to verify that signed documents have not been modified by third parties.
- Non-repudiation by the sender: a digitally signed document
cannot be repudiated repudiated by the signer.
- Adobe Acrobat Readercompatibility.
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E-Sign works with the digital certificates issued by Certificate Authorities.