大家好我是乐乐，cer转crt，关于cer转crt和key很多人还不知道，那么现在让我们一起来看看吧！

1、每次生成的证书都不一样，但是未发现不同后缀名下的证书格式不同。

2、常见的MIME类型 超文本标记语言文本 .html text/html xml文档 .xml text/xml XHTML文档 .xhtml application/xhtml+xml 普通文本 .txt text/plain RTF文本 .rtf application/rtf PDF文档 .pdf application/pdf Microsoft Word文件 .word application/msword PNG图像 .png image/png GIF图形 .gif image/gif JPEG图形 .jpeg,.jpg image/jpeg au声音文件 .au audio/basic MIDI音乐文件 mid,.midi audio/midi,audio/x-midi RealAudio音乐文件 .ra, .ram audio/x-pn-realaudio MPEG文件 .mpg,.mpeg video/mpeg AVI文件 .i video/x-msvideo GZIP文件 .gz application/x-gzip TAR文件 .tar application/x-tar 任意的二进制数据 application/octet-streamimage/svg+xml svgapplication/envoy evyapplication/fractals fifapplication/futuresplash splapplication/hta htaapplication/internet-property-stream acxapplication/mac-binhex40 hqxapplication/msword docapplication/octet-stream application/octet-stream binapplication/octet-stream classapplication/octet-stream dmsapplication/octet-stream exeapplication/octet-stream lhaapplication/octet-stream lzhapplication/oda odaapplication/olescript axsapplication/pdf pdfapplication/pics-rules ppplication/pkcs10 p10application/pkix-crl crlapplication/tscript aiapplication/tscript epsapplication/rtf rtfapplication/set-payment-initiation setpayapplication/set-registration-initiation setregapplication/vnd.ms-excel xlaapplication/vnd.ms-excel xlcapplication/vnd.ms-excel xlmapplication/vnd.ms-excel xlsapplication/vnd.ms-excel xltapplication/vnd.ms-excel xlwapplication/vnd.ms-outlook msgapplication/vnd.ms-pkrtstore sstapplication/vnd.ms-pkiseccat catapplication/vnd.ms-pkistl stlapplication/vnd.ms-powerpoint potapplication/vnd.ms-powerpoint pptapplication/vnd.ms-project mppapplication/vnd.ms-works wcmapplication/vnd.ms-works wdbapplication/vnd.ms-works wksapplication/vnd.ms-works wpsapplication/winhlp hlpapplication/x-bcpio bcpioapplication/x-cdf cdfapplication/x-compress zapplication/x-compressed tgzapplication/x-cpio cpioapplication/x-csh cshapplication/x-director dirapplication/x-director dxrapplication/x-i iapplication/x-gtar gtarapplication/x-gzip gzapplication/x-hdf hdfapplication/x-internet-signup insapplication/x-internet-signup ispapplication/x-iphone iiiapplication/x-jascript jsapplication/x-latex latexapplication/x-msaccess mdbapplication/x-mscardfile crdapplication/x-msclip clpapplication/x-msdownload dllapplication/x-mediiew m13application/x-mediiew m14application/x-mediiew mvbapplication/x-metafile wmfapplication/x-money mnyapplication/x-msschedule scdapplication/x-msterminal trmapplication/x-mswrite wriapplication/x-netcdf cdfapplication/x-perfmon pmaapplication/x-perfmon pmcapplication/x-perfmon pmlapplication/x-perfmon pmrapplication/x-perfmon pmwapplication/x-pkcs12 p12application/x-pkcs12 pfxapplication/x-pkcs7-certificates p7bapplication/x-pkcs7-certificates spcapplication/x-pkcs7-certreqresp p7rapplication/x-pkcs7-mime p7capplication/x-pkcs7-mime p7mapplication/x-pkcs7-signature p7sapplication/x-sh shapplication/x-shar sharapplication/x-shockwe-flash swfapplication/x-stuffit sitapplication/x-sv4cpio sv4cpioapplication/x-sv4crc sv4crcapplication/x-tar tarapplication/x-tcl tclapplication/x-tex texapplication/x-tex texiapplication/x-tex texapplication/x-troff roffapplication/x-troff tapplication/x-troff trapplication/x-troff-man manapplication/x-troff-me meapplication/x-troff-ms msapplication/x-ustar ustarapplication/x-wais-source srcapplication/x-x509-ca-cert cerapplication/x-x509-ca-cert crtapplication/x-x509-ca-cert derapplication/ynd.ms-pkipko pkoapplication/zip zipaudio/basic auaudio/basic sndaudio/mid midaudio/mpeg mp3audio/x-aiff aifaudio/x-aiff aifcaudio/x-aiff aiffaudio/x-mpeg m3uaudio/x-pn-realaudio raaudio/x-pn-realaudio ramaudio/x-w wimage/bmp bmpimage/cis-cod codimage/gif gifimage/ief iefimage/jpeg jpeimage/jpeg jpegimage/jpeg jpgimage/pipeg jfifimage/tiff tifimage/tiff tiffimage/x-cmu-raster rasimage/x-cmx cmximage/x-icon icoimage/x-portable-anymap pnmimage/x-portable-bitmap pbmimage/x-portable-pixmap ppmimage/x-rgb rgbimage/x-xbitmap xbmimage/x-xpixmap xpmimage/x-xwindowdump xwdmessage/rfc822 mhtmessage/rfc822 mhtmlmessage/rfc822 nwstext/css csstext/html htmtext/html htmltext/html stmtext/plain bastext/plain ctext/plain htext/plain txttext/richtext rtxtext/scriptlet scttext/tab-separated-values tsvtext/webviewhtml htttext/x-setext etxtext/x-vcard vcfvideo/mpeg mp2video/mpeg mpideo/mpeg mpevideo/mpeg mpegvideo/mpeg mpgvideo/mpeg mpv2video/quicktime movvideo/quicktime qtvideo/x-la-asf lsfvideo/x-la-asf lsxvideo/x-ms-asf asfvideo/x-ms-asf asrvideo/x-ms-asf asxvideo/x-msvideo ivideo/x-sgi-movie moviex-world/x-vrml vrmlx-world/x-vrml wrzx-world/x-vrml xafx-world/x-vrml xof。

本文到这结束，希望上面文章对大家有所帮助。