If it is a picture in other formats, use tools to make it bmp format, and keep the background color white. Set the edge of this picture to the red border of the seal in the picture. The electronic signature is only available in formal government departments or institutions. Generally, there is an electronic signature in the Word of the clerk in charge of sending documents in the company.
Of course, if you don't want others to modify the files of the electronic seal, you can convert word and excel into PDF format with Adobe Acrobat XI Pro software, add the electronic seal, and encrypt the PDF before you can copy and print it, which is also the requirement for the use of the electronic seal.
Electronic seal technology is a technology that can be directly signed or stamped on electronic documents by combining information encryption and identity authentication. It is difficult for enterprises to deploy and implement it independently, but they can sign electronic contracts quickly with the help of a trusted third-party electronic contract platform.
Extended data:
It mainly registers USB keys of users who log in to the electronic seal management subsystem and users who can make electronic seals in the electronic seal management subsystem. Only the holders of USB keys at the time of registration can log in to the system, and only registered USB keys can be used to make electronic seals.
USBKEY management module includes the operations of registration, loss reporting (cancellation of loss reporting) and destruction.
The user can log in to the electronic seal making system through authorized personnel to fill in the application form of electronic seal. When filling in the application form, it should be distinguished whether the application is for electronic seal, personal seal or personal signature. For different forms of electronic seal, the content to be filled in will be different.
After receiving the application, the seal management department decides whether to agree to use the electronic seal according to the business needs, and if it agrees to apply, it will enter the next chapter-making link.
If you don't agree with the application, return the application.
When the applicant submits the application, it will upload a physical seal impression or personal signature image processed by the image processing software. After the application is passed, the image will be automatically imported into the seal impression database, and the import time will be taken as the starting time for the impression to take effect, and the validity period of the impression will be automatically set to indefinite.
Seal managers can stop using, destroy and inquire about the stamps, and the stamps that have been stopped or destroyed cannot be used again when making electronic seals.
For seals with the same seal name but different seals, multiple seal impressions should be kept, but only one seal can be valid at the same time.
The system uses a fixed symmetric key to encrypt the seal impression picture, and only in this system can the information of the inscription seal picture be decrypted.
The electronic seal card must have a legal digital certificate before making the electronic seal, and it needs to be authorized by the authorization system of the server.
When making a seal, you need to insert the electronic seal card after inserting the authorization card for making a seal. You can automatically complete the seal making process by selecting the appropriate seal stamp, bind the seal stamp picture with the digital certificate in the electronic seal card, and write the encrypted electronic seal into the electronic seal card.
References:
Baidu encyclopedia-electronic seal