232 lines
6.9 KiB
Groff
232 lines
6.9 KiB
Groff
.\" $NetBSD: d2i_DSAPublicKey.3,v 1.5 2005/11/25 21:09:35 christos Exp $
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.\" ========================================================================
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.\"
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.IX Title "d2i_DSAPublicKey 3"
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.TH d2i_DSAPublicKey 3 "2004-03-19" "0.9.8a" "OpenSSL"
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.SH "NAME"
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d2i_DSAPublicKey, i2d_DSAPublicKey, d2i_DSAPrivateKey, i2d_DSAPrivateKey,
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d2i_DSA_PUBKEY, i2d_DSA_PUBKEY, d2i_DSA_SIG, i2d_DSA_SIG \- DSA key encoding
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and parsing functions.
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.SH "LIBRARY"
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libcrypto, -lcrypto
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 2
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\& #include <openssl/dsa.h>
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\& #include <openssl/x509.h>
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.Ve
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.PP
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.Vb 1
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\& DSA * d2i_DSAPublicKey(DSA **a, const unsigned char **pp, long length);
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.Ve
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.PP
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.Vb 1
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\& int i2d_DSAPublicKey(const DSA *a, unsigned char **pp);
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.Ve
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.PP
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.Vb 1
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\& DSA * d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length);
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.Ve
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.PP
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.Vb 1
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\& int i2d_DSA_PUBKEY(const DSA *a, unsigned char **pp);
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.Ve
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.PP
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.Vb 1
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\& DSA * d2i_DSAPrivateKey(DSA **a, const unsigned char **pp, long length);
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.Ve
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.PP
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.Vb 1
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\& int i2d_DSAPrivateKey(const DSA *a, unsigned char **pp);
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.Ve
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.PP
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.Vb 1
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\& DSA * d2i_DSAparams(DSA **a, const unsigned char **pp, long length);
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.Ve
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.PP
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.Vb 1
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\& int i2d_DSAparams(const DSA *a, unsigned char **pp);
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.Ve
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.PP
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.Vb 1
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\& DSA * d2i_DSA_SIG(DSA_SIG **a, const unsigned char **pp, long length);
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.Ve
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.PP
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.Vb 1
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\& int i2d_DSA_SIG(const DSA_SIG *a, unsigned char **pp);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fId2i_DSAPublicKey()\fR and \fIi2d_DSAPublicKey()\fR decode and encode the \s-1DSA\s0 public key
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components structure.
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.PP
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\&\fId2i_DSA_PUBKEY()\fR and \fIi2d_DSA_PUBKEY()\fR decode and encode an \s-1DSA\s0 public key using
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a SubjectPublicKeyInfo (certificate public key) structure.
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.PP
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\&\fId2i_DSAPrivateKey()\fR, \fIi2d_DSAPrivateKey()\fR decode and encode the \s-1DSA\s0 private key
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components.
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.PP
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\&\fId2i_DSAparams()\fR, \fIi2d_DSAparams()\fR decode and encode the \s-1DSA\s0 parameters using
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a \fBDss-Parms\fR structure as defined in \s-1RFC2459\s0.
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.PP
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\&\fId2i_DSA_SIG()\fR, \fIi2d_DSA_SIG()\fR decode and encode a \s-1DSA\s0 signature using a
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\&\fBDss-Sig-Value\fR structure as defined in \s-1RFC2459\s0.
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.PP
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The usage of all of these functions is similar to the \fId2i_X509()\fR and
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\&\fIi2d_X509()\fR described in the \fId2i_X509\fR\|(3) manual page.
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.SH "NOTES"
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.IX Header "NOTES"
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The \fB\s-1DSA\s0\fR structure passed to the private key encoding functions should have
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all the private key components present.
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.PP
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The data encoded by the private key functions is unencrypted and therefore
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offers no private key security.
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.PP
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The \fB\s-1DSA_PUBKEY\s0\fR functions should be used in preference to the \fBDSAPublicKey\fR
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functions when encoding public keys because they use a standard format.
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.PP
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The \fBDSAPublicKey\fR functions use an non standard format the actual data encoded
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depends on the value of the \fBwrite_params\fR field of the \fBa\fR key parameter.
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If \fBwrite_params\fR is zero then only the \fBpub_key\fR field is encoded as an
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\&\fB\s-1INTEGER\s0\fR. If \fBwrite_params\fR is 1 then a \fB\s-1SEQUENCE\s0\fR consisting of the
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\&\fBp\fR, \fBq\fR, \fBg\fR and \fBpub_key\fR respectively fields are encoded.
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.PP
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The \fBDSAPrivateKey\fR functions also use a non standard structure consiting
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consisting of a \s-1SEQUENCE\s0 containing the \fBp\fR, \fBq\fR, \fBg\fR and \fBpub_key\fR and
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\&\fBpriv_key\fR fields respectively.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fId2i_X509\fR\|(3)
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.SH "HISTORY"
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.IX Header "HISTORY"
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\&\s-1TBA\s0
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