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TASN1DecDSAKeyPair Class Reference

class TASN1DecDSAKeyPair

Class for decoding DSA key pairs from ASN.1 DER encoding.

Since
v8.0
Public Member Functions
IMPORT_C void DecodeDERL (const TDesC8 &, TInt &, CDSAPublicKey *&, CDSAPrivateKey *&)

Member Functions Documentation

DecodeDERL(const TDesC8 &, TInt &, CDSAPublicKey *&, CDSAPrivateKey *&)

IMPORT_C void DecodeDERL ( const TDesC8 & aDER,
TInt & aPos,
CDSAPublicKey *& aPublicKey,
CDSAPrivateKey *& aPrivateKey
)

Decodes a DSA key pair from a buffer containing an ASN.1 DER-encoded private key.

The encoding of the private key contains public key components as well.

The DER encoding has the following format: 
         *     SEQUENCE-OF
     *         INTEGER version (==0, ignored)
	 *         INTEGER p (public prime)
	 *         INTEGER q (160-bit public subprime, q | p-1)
	 *         INTEGER g (public generator of subgroup)
	 *         INTEGER x (private key)
	 *         INTEGER y (public key y=g^x)
	 *

Parameters

const TDesC8 & aDER DER-encoded private key.
TInt & aPos Position in the buffer to start decoding (updated on exit).
CDSAPublicKey *& aPublicKey On return, the DSA public key object
CDSAPrivateKey *& aPrivateKey On return, the DSA private key object

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