ios - 在IOS中为PDF文件设置密码

Question

我如何在生成 PDF 文件时设置密码以便用户在从电子邮件下载文件后使用密码打开文件？任何帮助都会得到帮助。提前致谢

Answer 1

CFDictionarySetValue(myDictionary, kCGPDFContextTitle, CFSTR("My PDF File"));
CFDictionarySetValue(myDictionary, kCGPDFContextCreator, CFSTR("My Name"));
///
CFDictionarySetValue(myDictionary, kCGPDFContextUserPassword, CFSTR("userpassword"));
CFDictionarySetValue(myDictionary, kCGPDFContextOwnerPassword, CFSTR("ownerpassword"));
///
pdfContext = CGPDFContextCreateWithURL (url, &pageRect, myDictionary); 

检查这个Creating Password Protected PDF in Objective-C