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- 对pdf进行数字签名，pdf已成为国际标准格式，很多公司都需要对自己的文档进行签名，这个数字签名可以添加文字，图片，和水印-Pdf digital signature on, pdf format has become the international standard, many companies need to document their own signature, the digital signature can add text, images, and watermarks
Update : 2025-04-15 Size : 1.16mb Publisher : 若草 - SHA1
The SHA1 encryption algorithm specifies a Secure Hash Algorithm (SHA1), which can be used to generate a
condensed representation of a message called a message digest. The SHA1 is required for use with the Digital
Signature Algorithm (DSA) as specified in the Digital Signature Standard (DSS) and whenever a secure hash
algorithm is required. Both the transmitter and intended receiver of a message in computing and verifying a
digital signature uses the SHA1.
Update : 2025-04-15 Size : 1kb Publisher : siva prasad