d2i_DSAPublicKey.pod 3.1 KB
Newer Older
D
Dr. Stephen Henson 已提交
1 2 3 4 5
=pod

=head1 NAME

d2i_DSAPublicKey, i2d_DSAPublicKey, d2i_DSAPrivateKey, i2d_DSAPrivateKey,
D
Dr. Stephen Henson 已提交
6 7
d2i_DSA_PUBKEY, i2d_DSA_PUBKEY, d2i_DSAparams, i2d_DSAparams,
d2i_DSA_SIG, i2d_DSA_SIG - DSA key encoding and parsing functions.
D
Dr. Stephen Henson 已提交
8 9 10 11

=head1 SYNOPSIS

 #include <openssl/dsa.h>
12
 #include <openssl/x509.h>
D
Dr. Stephen Henson 已提交
13 14 15 16 17 18 19 20 21

 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);

D
Dr. Stephen Henson 已提交
22 23 24 25 26 27
 DSA *d2i_DSA_PUBKEY_bio(BIO *bp, DSA **dsa);
 DSA *d2i_DSA_PUBKEY_fp(FILE *fp, DSA **dsa);

 int i2d_DSA_PUBKEY_bio(BIO *bp, DSA *dsa);
 int i2d_DSA_PUBKEY_fp(FILE *fp, DSA *dsa);

D
Dr. Stephen Henson 已提交
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
 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);

=head1 DESCRIPTION

d2i_DSAPublicKey() and i2d_DSAPublicKey() decode and encode the DSA public key
components structure.

45 46
d2i_DSA_PUBKEY() and i2d_DSA_PUBKEY() decode and encode an DSA public key using
a SubjectPublicKeyInfo (certificate public key) structure.
D
Dr. Stephen Henson 已提交
47

D
Dr. Stephen Henson 已提交
48 49 50 51
d2i_DSA_PUBKEY_bio(), d2i_DSA_PUBKEY_fp(), i2d_DSA_PUBKEY_bio() and
i2d_DSA_PUBKEY_fp() are similar to d2i_DSA_PUBKEY() and i2d_DSA_PUBKEY()
except they decode or encode using a B<BIO> or B<FILE> pointer.

D
Dr. Stephen Henson 已提交
52 53 54 55 56 57 58 59 60 61
d2i_DSAPrivateKey(), i2d_DSAPrivateKey() decode and encode the DSA private key
components.

d2i_DSAparams(), i2d_DSAparams() decode and encode the DSA parameters using
a B<Dss-Parms> structure as defined in RFC2459.

d2i_DSA_SIG(), i2d_DSA_SIG() decode and encode a DSA signature using a
B<Dss-Sig-Value> structure as defined in RFC2459.

The usage of all of these functions is similar to the d2i_X509() and
R
Rich Salz 已提交
62
i2d_X509() described in the L<d2i_X509(3)> manual page.
D
Dr. Stephen Henson 已提交
63 64 65 66 67 68 69 70 71 72 73 74

=head1 NOTES

The B<DSA> structure passed to the private key encoding functions should have
all the private key components present.

The data encoded by the private key functions is unencrypted and therefore 
offers no private key security.

The B<DSA_PUBKEY> functions should be used in preference to the B<DSAPublicKey>
functions when encoding public keys because they use a standard format.

D
Dr. Stephen Henson 已提交
75 76 77
The B<DSAPublicKey> functions use a non standard format which is a
B<SEQUENCE> consisting of the B<p>, B<q>, B<g> and B<pub_key> fields
respectively.
D
Dr. Stephen Henson 已提交
78

79
The B<DSAPrivateKey> functions also use a non standard structure consisting
D
Dr. Stephen Henson 已提交
80 81 82 83 84
consisting of a SEQUENCE containing the B<p>, B<q>, B<g> and B<pub_key> and
B<priv_key> fields respectively.

=head1 SEE ALSO

R
Rich Salz 已提交
85
L<d2i_X509(3)>
D
Dr. Stephen Henson 已提交
86 87 88 89 90 91

=head1 HISTORY

TBA

=cut
R
Rich Salz 已提交
92 93 94 95 96 97 98 99 100 101 102

=head1 COPYRIGHT

Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the "License").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.

=cut