MeSign Document Digital Signature and Encryption ServicesMake e-document more secure and more trustworthy.

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MeSign APP is an encrypted email client software and an essential office tool software for business people. MeSign APP is also an electronic document signing and encryption tool software, because the email transmission is highly consistent and coincident with the contract signing process, both parties of the contract complete the process from drafting the contract to agreeing to sign the contract. So, MeSign APP integrate PDF document signing service and electronic contract signing service is a perfect solution for business people. All finished documents including electronic contracts can be signed digitally within MeSign APP, it will greatly facilitate the daily document management of business people, and greatly help enterprises to transfer all paper-based work to trusted paperless of business management.

MeSign Document Digital Signature and Encryption Services, abbr. MeSign E-sign Services, is a charged value-added service for MeSign APP users, including Contract E-signature Service and Document D-signature Service. All documents and contract are digitally signed by Adobe trusted PDF Signing Certificate with timestamp signature, to ensure the signed document and contract have global legal effort and is global trusted.

MeSign Contract E-signature Service let users initiate e-contract signing and sign the e-contract in his/her computer directly using MeSign APP, no need to rely on the e-contract signing service provider and no need to upload the to-be-signed e-contract documents to the e-signature service platform. The e-contract signing is completed on the user's own computer, which effectively ensures that these important confidential contract documents to be signed cannot leave their own computers or their own internal systems, ensuring the security of confidential information in the contract documents.

MeSign Document D-signature Service let users sign PDF document in his/her computer directly using MeSign APP without document quantity limit, no need to apply a PDF signing certificate from a CA, no need to rely on an electronic signature service provider, the signed PDF document is Adobe global trusted with timestamp and support LTV feature. Users can digitally sign all PDF files to be released at any time to ensure that the published files are trusted and to prevent illegal tampering and illegal counterfeiting. And user completes the digital signature of the document on his/her computer, and the document does not leave the user's computer, ensuring the security of the confidential information of the document. MeSign APP also supports encrypting the document with the public key of the encryption certificate of the user who has the right to read this document when signing the document, ensuring that only the authorized reader can seamlessly open and view it with the Adobe reader, and others cannot decrypt and read this document.

The most important core point of MeSign E-sign Service is: we provide an e-signature tool (MeSign APP) that installed in user’s computer, then user do not need to upload the original document to be signed to the e-signature service platform to complete the e-signature, and no need to upload the signed documents or contract to the e-signature validation system to verify the e-signature. This solution truly protects the personal privacy information in the documents and e-contracts and the business secret. The use of MeSign APP to sign e-contract and documents has met and exceeded the requirements of the EU General Data Protection Regulation (GDPR) for the protection of privacy information.

MeSign E-sign Service provides three solutions as APP local signing, API call HASH signing and local deploying e-signature system for batch signing. We also provide the Adobe trusted PDF signature certificate that can be used to digitally sign documents using Adobe Reader. The total four solutions can meet all kinds of electronic signature application needs of users worldwide.

(1) Using MeSign APP to sign and encrypt document

MeSign APP does not provide electronic signature method to sign contract that only validate the signer’s email address since we think this is not enough to validate the signer’s identity. MeSign APP just provide digital signature method to sign the contract that need to validate the signer’s authentic identity. We also provide global trusted PDF document digital signature service. Users who have purchased the Document D-signature service can sign the PDF document using MeSign APP, and users who have purchased the Contract E-signature service can initiate an unlimited number of contracts signing and sign the contracts. The current preferential activity is that buy Document D-signature service and free Contract E-signature service, and vice versa.

Users do not need to apply for a PDF signature certificate from the CA, they only need to use MeSign APP to sign the contract and document directly. In other words: the document to be signed does not leave the user's computer, and the digital signature is completed directly on the user's computer, without submitting the document or contract file to be signed to any e-signature platform. If you need to encrypt the document, you only need to select the user who has the right to read, MeSign APP will automatically retrieve the user’s public key for encryption to encrypt this document to ensure the confidentiality of the document.

Users use the MeSign APP for document signature and encryption, which not only solves the complex process issues of digital signature and encryption (no need to apply for document signing certificate and encrypting certificate), but also solves privacy protection and document security issues (no need to upload document to be signed to the e-signature platform). The signed contracts and documents completed using MeSign APP all use Adobe global trusted PDF signing certificate to achieve digital signature and time stamp signature, and support Adobe Long Term Validation (LTV) function, perfect for global trust and global legal effect.

(2) Calling E-sign API for batch document signing and contract signing

In order to meet the needs of large enterprises and government agencies for the integration of electronic signature functions in internal business management systems, MeSign E-Signature Service provide cloud E-sign API call services for users who are familiar with PDF signature programming, to achieve low-cost, fully automatic global trusted PDF files e-signature service, which is convenient for users to integrate trusted digital signatures into their business management system seamlessly and at low cost, thoroughly implement trusted paperless office and digital management, and can be used to sign e-commerce contracts and employee agreement, certification documents, press documents, etc., and can automatically send signed documents to end user using encrypted emails. Calling E-sign API service is charged per time, 100 times free for users to test API calls.

The user only needs to submit the PDF file to be signed generated by the business management system to the local E-sign API calling system, and this system generates the signing request data and post to MeSign e-Signing Service System by E-sign API to obtain the signed data with time stamp data and LTV data, then write the call-returned signed data into the PDF file to complete the digital signature. Click here for details.

(3) Deploying e-Signature system for batch document signing and contract signing

If the user does not know how to program PDF file digital signature, user needs to purchase the MeSign e-Signature System (MSS, software) to deploy on the user's intranet. The user only needs to submit the PDF file generated by the business management system to the MSS. The system generates the HASH of the file to be signed, and post the HASH to the cloud E-sign API to obtain the signed data with timestamp data and LTV data, and then the system writes the returned signed data to the PDF file to complete the digital signature.

MeSign e-Signature System is a plug-and-play software system, users do not need any PDF digital signature programming experience, nor need to apply for a PDF signing certificate from any CA, directly docking with business management systems to achieve the completion of PDF files digital signature, the signed PDF file Adobe global trusted and global legal effect.

Since the e-Signature System still needs to call the E-sign API for digital signature, the user still needs to purchase the E-sign API call times for the signature. Click here for details.

If users want to deploy and manage PDF signing certificate locally, they need to purchase HSM (Hardware Security Module) for the private key security, and also need to have a computer room environment and key management measures that are compatible with the secure deployment of cryptographic device, and also need to purchase MeSign e-Signature System Pro edition and charged timestamp service. This is And timestamp to call the service. This solution is not recommended, but if user is interested, please contact us.

(4) Purchase Adobe global trusted PDF Signing Certificate and use Adobe Reader to complete document digital signature

MeSign electronic signature service automatically provides users with a PDF Signing Certificates of Adobe global trusted for digitally signing PDF documents and signing electronic contracts. Users don't need to care about how to apply for the PDF signing certificates, how to manage the certificate and how to sign a document with a certificate, all are automatically done by MeSign APP.

However, if users want to have a PDF signing certificate in hand for digital signature and manually use the document signing function provided by Adobe Reader to sign PDF documents, they can purchase an Adobe global trusted PDF Signing Certificate from MeSign website. MeSign PDF Signing Certificate provides trusted assurance of authentication for electronic documents by validating author and document, click here for more details.

After successfully applying for MeSign PDF Signing Certificate, users can use the digital signature function of Adobe Reader's "Management Tool"-"Certificate" to digitally sign the PDF files, as shown in the figure below.