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+.\" ========================================================================
+.\"
+.IX Title "d2i_DSAPublicKey 3"
+.TH d2i_DSAPublicKey 3 "2015-01-08" "1.0.1k" "OpenSSL"
+.\" For nroff, turn off justification. Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH "NAME"
+d2i_DSAPublicKey, i2d_DSAPublicKey, d2i_DSAPrivateKey, i2d_DSAPrivateKey,
+d2i_DSA_PUBKEY, i2d_DSA_PUBKEY, d2i_DSA_SIG, i2d_DSA_SIG \- DSA key encoding
+and parsing functions.
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+.Vb 2
+\& #include <openssl/dsa.h>
+\& #include <openssl/x509.h>
+\&
+\& DSA * d2i_DSAPublicKey(DSA **a, const unsigned char **pp, long length);
+\&
+\& int i2d_DSAPublicKey(const DSA *a, unsigned char **pp);
+\&
+\& DSA * d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length);
+\&
+\& int i2d_DSA_PUBKEY(const DSA *a, unsigned char **pp);
+\&
+\& DSA * d2i_DSAPrivateKey(DSA **a, const unsigned char **pp, long length);
+\&
+\& int i2d_DSAPrivateKey(const DSA *a, unsigned char **pp);
+\&
+\& DSA * d2i_DSAparams(DSA **a, const unsigned char **pp, long length);
+\&
+\& int i2d_DSAparams(const DSA *a, unsigned char **pp);
+\&
+\& DSA * d2i_DSA_SIG(DSA_SIG **a, const unsigned char **pp, long length);
+\&
+\& int i2d_DSA_SIG(const DSA_SIG *a, unsigned char **pp);
+.Ve
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+\&\fId2i_DSAPublicKey()\fR and \fIi2d_DSAPublicKey()\fR decode and encode the \s-1DSA\s0 public key
+components structure.
+.PP
+\&\fId2i_DSA_PUBKEY()\fR and \fIi2d_DSA_PUBKEY()\fR decode and encode an \s-1DSA\s0 public key using
+a SubjectPublicKeyInfo (certificate public key) structure.
+.PP
+\&\fId2i_DSAPrivateKey()\fR, \fIi2d_DSAPrivateKey()\fR decode and encode the \s-1DSA\s0 private key
+components.
+.PP
+\&\fId2i_DSAparams()\fR, \fIi2d_DSAparams()\fR decode and encode the \s-1DSA\s0 parameters using
+a \fBDss-Parms\fR structure as defined in \s-1RFC2459.\s0
+.PP
+\&\fId2i_DSA_SIG()\fR, \fIi2d_DSA_SIG()\fR decode and encode a \s-1DSA\s0 signature using a
+\&\fBDss-Sig-Value\fR structure as defined in \s-1RFC2459.\s0
+.PP
+The usage of all of these functions is similar to the \fId2i_X509()\fR and
+\&\fIi2d_X509()\fR described in the \fId2i_X509\fR\|(3) manual page.
+.SH "NOTES"
+.IX Header "NOTES"
+The \fB\s-1DSA\s0\fR structure passed to the private key encoding functions should have
+all the private key components present.
+.PP
+The data encoded by the private key functions is unencrypted and therefore
+offers no private key security.
+.PP
+The \fB\s-1DSA_PUBKEY\s0\fR functions should be used in preference to the \fBDSAPublicKey\fR
+functions when encoding public keys because they use a standard format.
+.PP
+The \fBDSAPublicKey\fR functions use an non standard format the actual data encoded
+depends on the value of the \fBwrite_params\fR field of the \fBa\fR key parameter.
+If \fBwrite_params\fR is zero then only the \fBpub_key\fR field is encoded as an
+\&\fB\s-1INTEGER\s0\fR. If \fBwrite_params\fR is 1 then a \fB\s-1SEQUENCE\s0\fR consisting of the
+\&\fBp\fR, \fBq\fR, \fBg\fR and \fBpub_key\fR respectively fields are encoded.
+.PP
+The \fBDSAPrivateKey\fR functions also use a non standard structure consiting
+consisting of a \s-1SEQUENCE\s0 containing the \fBp\fR, \fBq\fR, \fBg\fR and \fBpub_key\fR and
+\&\fBpriv_key\fR fields respectively.
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fId2i_X509\fR\|(3)
+.SH "HISTORY"
+.IX Header "HISTORY"
+\&\s-1TBA\s0
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