📄 cmsenvelopeddataparser.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.6.0) on Mon Mar 16 22:19:18 EST 2009 --><TITLE>CMSEnvelopedDataParser (Bouncy Castle Library 1.42 API Specification)</TITLE><META NAME="date" CONTENT="2009-03-16"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ if (location.href.indexOf('is-external=true') == -1) { parent.document.title="CMSEnvelopedDataParser (Bouncy Castle Library 1.42 API Specification)"; }}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><HR><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Bouncy Castle Cryptography Library 1.42</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../org/bouncycastle/cms/CMSEnvelopedDataGenerator.html" title="class in org.bouncycastle.cms"><B>PREV CLASS</B></A> <A HREF="../../../org/bouncycastle/cms/CMSEnvelopedDataStreamGenerator.html" title="class in org.bouncycastle.cms"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html?org/bouncycastle/cms/CMSEnvelopedDataParser.html" target="_top"><B>FRAMES</B></A> <A HREF="CMSEnvelopedDataParser.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#fields_inherited_from_class_org.bouncycastle.cms.CMSContentInfoParser">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.bouncycastle.cms</FONT><BR>Class CMSEnvelopedDataParser</H2><PRE>java.lang.Object <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../org/bouncycastle/cms/CMSContentInfoParser.html" title="class in org.bouncycastle.cms">org.bouncycastle.cms.CMSContentInfoParser</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>org.bouncycastle.cms.CMSEnvelopedDataParser</B></PRE><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../org/bouncycastle/mail/smime/SMIMEEnvelopedParser.html" title="class in org.bouncycastle.mail.smime">SMIMEEnvelopedParser</A></DD></DL><HR><DL><DT><PRE>public class <B>CMSEnvelopedDataParser</B><DT>extends <A HREF="../../../org/bouncycastle/cms/CMSContentInfoParser.html" title="class in org.bouncycastle.cms">CMSContentInfoParser</A></DL></PRE><P>Parsing class for an CMS Enveloped Data object from an input stream. <p> Note: that because we are in a streaming mode only one recipient can be tried and it is important that the methods on the parser are called in the appropriate order. </p> <p> Example of use - assuming the first recipient matches the private key we have. <pre> CMSEnvelopedDataParser ep = new CMSEnvelopedDataParser(inputStream); RecipientInformationStore recipients = ep.getRecipientInfos(); Collection c = recipients.getRecipients(); Iterator it = c.iterator(); if (it.hasNext()) { RecipientInformation recipient = (RecipientInformation)it.next(); CMSTypedStream recData = recipient.getContentStream(privateKey, "BC"); processDataStream(recData.getContentStream()); } </pre> Note: this class does not introduce buffering - if you are processing large files you should create the parser with: <pre> CMSEnvelopedDataParser ep = new CMSEnvelopedDataParser(new BufferedInputStream(inputStream, bufSize)); </pre> where bufSize is a suitably large buffer size.<P><P><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR></TABLE> <A NAME="fields_inherited_from_class_org.bouncycastle.cms.CMSContentInfoParser"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from class org.bouncycastle.cms.<A HREF="../../../org/bouncycastle/cms/CMSContentInfoParser.html" title="class in org.bouncycastle.cms">CMSContentInfoParser</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../org/bouncycastle/cms/CMSContentInfoParser.html#_contentInfo">_contentInfo</A>, <A HREF="../../../org/bouncycastle/cms/CMSContentInfoParser.html#_data">_data</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../org/bouncycastle/cms/CMSEnvelopedDataParser.html#CMSEnvelopedDataParser(byte[])">CMSEnvelopedDataParser</A></B>(byte[] envelopedData)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../org/bouncycastle/cms/CMSEnvelopedDataParser.html#CMSEnvelopedDataParser(java.io.InputStream)">CMSEnvelopedDataParser</A></B>(java.io.InputStream envelopedData)</CODE><BR> </TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/bouncycastle/cms/CMSEnvelopedDataParser.html#getEncryptionAlgOID()">getEncryptionAlgOID</A></B>()</CODE><BR> return the object identifier for the content encryption algorithm.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.security.AlgorithmParameters</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/bouncycastle/cms/CMSEnvelopedDataParser.html#getEncryptionAlgorithmParameters(java.security.Provider)">getEncryptionAlgorithmParameters</A></B>(java.security.Provider provider)</CODE><BR> Return an AlgorithmParameters object giving the encryption parameters used to encrypt the message content.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.security.AlgorithmParameters</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/bouncycastle/cms/CMSEnvelopedDataParser.html#getEncryptionAlgorithmParameters(java.lang.String)">getEncryptionAlgorithmParameters</A></B>(java.lang.String provider)</CODE><BR> Return an AlgorithmParameters object giving the encryption parameters used to encrypt the message content.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> byte[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/bouncycastle/cms/CMSEnvelopedDataParser.html#getEncryptionAlgParams()">getEncryptionAlgParams</A></B>()</CODE><BR> return the ASN.1 encoded encryption algorithm parameters, or null if there aren't any.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../org/bouncycastle/cms/RecipientInformationStore.html" title="class in org.bouncycastle.cms">RecipientInformationStore</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/bouncycastle/cms/CMSEnvelopedDataParser.html#getRecipientInfos()">getRecipientInfos</A></B>()</CODE><BR> return a store of the intended recipients for this message</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -