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15	<TITLE>CRYPTO_RSA_EncryptInit_PrivateKey</TITLE>
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20<H1>CRYPTO_RSA_EncryptInit_PrivateKey <IMG src="../../image/BPT.gif" width="23" height="12" border="0" align="middle"><IMG src="../../image/TWL.gif" width="23" height="12" border="0" align="middle"></H1>
21
22<H2>Syntax</H2>
23<DL>
24	<DD>
25		<PRE><CODE>
26#include &lt;nitro/crypto.h&gt;
27
28s32 CRYPTO_RSA_EncryptInit_PrivateKey(<a href="CRYPTORSAContext.html">CRYPTORSAContext</a> *context, <a href="CRYPTORSAEncryptInitPKParam.html">CRYPTORSAEncryptInitPKParam</a> *param);
29		</CODE></PRE>
30	</DD>
31</DL>
32
33<H2>Arguments</H2>
34<TABLE border="1">
35	<TBODY>
36		<TR>
37			<TD width="25%"><SPAN class="argument">context</SPAN></TD>
38			<TD width="75%">Address of the context structure for internal use.</TD>
39		</TR>
40		<TR>
41			<TD><SPAN class="argument">param</SPAN></TD>
42			<TD>Address of the structure for specifying the required settings for RSA encryption.</TD>
43		</TR>
44	</TBODY>
45</TABLE>
46
47<H2>Return Values</H2>
48<P>
49	Returns one of the following process results.
50</P>
51<TABLE border="1">
52	<TBODY>
53		<TR>
54			<TD width="25%">0</TD>
55			<TD width="75%">Initialization succeeded</TD>
56		</TR>
57		<TR>
58			<TD>-1</TD>
59			<TD>Initialization failed</TD>
60		</TR>
61	</TBODY>
62</TABLE>
63
64<H2>Description</H2>
65<P>
66	Performs initialization for encryption using the RSA algorithm.
67</P>
68<P>
69	This function is different from <A href="CRYPTO_RSA_EncryptInit.html"><CODE>CRYPTO_RSA_EncryptInit</CODE></A> because it allows you to initialize using a private key.
70</P>
71<P>
72	The ASN.1 format private key used by the CRYPTO library uses specifications that include the content of the public key. It is therefore possible to encrypt using the public key included in private key data. This function encrypts data using a public key included in this private key.
73</P>
74
75<H2>See Also</H2>
76<P>
77	<A href="CRYPTO_RSA_EncryptInit.html"><CODE>CRYPTO_RSA_EncryptInit</CODE></A>
78</P>
79
80<H2>Revision History</H2>
81<P>
82	2008/11/17 Revised <B>Description</B>.<BR> 2008/04/17 Initial version.
83</P>
84
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