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.\"
.IX Title "d2i_RSAPublicKey 3"
.TH d2i_RSAPublicKey 3 "2019-12-20" "1.0.2u" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
d2i_RSAPublicKey, i2d_RSAPublicKey, d2i_RSAPrivateKey, i2d_RSAPrivateKey,
d2i_RSA_PUBKEY, i2d_RSA_PUBKEY, i2d_Netscape_RSA,
d2i_Netscape_RSA \- RSA public and private key encoding functions.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\& #include <openssl/rsa.h>
\& #include <openssl/x509.h>
\&
\& RSA * d2i_RSAPublicKey(RSA **a, const unsigned char **pp, long length);
\&
\& int i2d_RSAPublicKey(RSA *a, unsigned char **pp);
\&
\& RSA * d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length);
\&
\& int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp);
\&
\& RSA * d2i_RSAPrivateKey(RSA **a, const unsigned char **pp, long length);
\&
\& int i2d_RSAPrivateKey(RSA *a, unsigned char **pp);
\&
\& int i2d_Netscape_RSA(RSA *a, unsigned char **pp, int (*cb)());
\&
\& RSA * d2i_Netscape_RSA(RSA **a, const unsigned char **pp, long length, int (*cb)());
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBd2i_RSAPublicKey()\fR and \fBi2d_RSAPublicKey()\fR decode and encode a PKCS#1 RSAPublicKey
structure.
.PP
\&\fBd2i_RSA_PUBKEY()\fR and \fBi2d_RSA_PUBKEY()\fR decode and encode an \s-1RSA\s0 public key using
a SubjectPublicKeyInfo (certificate public key) structure.
.PP
\&\fBd2i_RSAPrivateKey()\fR, \fBi2d_RSAPrivateKey()\fR decode and encode a PKCS#1 RSAPrivateKey
structure.
.PP
\&\fBd2i_Netscape_RSA()\fR, \fBi2d_Netscape_RSA()\fR decode and encode an \s-1RSA\s0 private key in
\&\s-1NET\s0 format.
.PP
The usage of all of these functions is similar to the \fBd2i_X509()\fR and
\&\fBi2d_X509()\fR described in the \fBd2i_X509\fR\|(3) manual page.
.SH "NOTES"
.IX Header "NOTES"
The \fB\s-1RSA\s0\fR structure passed to the private key encoding functions should have
all the PKCS#1 private key components present.
.PP
The data encoded by the private key functions is unencrypted and therefore 
offers no private key security.
.PP
The \s-1NET\s0 format functions are present to provide compatibility with certain very
old software. This format has some severe security weaknesses and should be
avoided if possible.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBd2i_X509\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
\&\s-1TBA\s0