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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.
 

SYNOPSIS

 #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);

DESCRIPTION

d2i_DSA_PUBKEY() and i2d_DSA_PUBKEY() decode and encode an DSA public key using a SubjectPublicKeyInfo (certificate public key) structure.

d2i_DSAPrivateKey(), i2d_DSAPrivateKey() decode and encode the DSA private key components.

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

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

The usage of all of these functions is similar to the d2i_X509() and i2d_X509() described in the d2i_X509(3) manual page.  

NOTES

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

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

The DSAPublicKey functions use an non standard format the actual data encoded depends on the value of the write_params field of the a key parameter. If write_params is zero then only the pub_key field is encoded as an INTEGER. If write_params is 1 then a SEQUENCE consisting of the p, q, g and pub_key respectively fields are encoded.

The DSAPrivateKey functions also use a non standard structure consiting consisting of a SEQUENCE containing the p, q, g and pub_key and priv_key fields respectively.  

SEE ALSO

HISTORY

Index

NAME

SYNOPSIS

DESCRIPTION

NOTES

SEE ALSO

HISTORY

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