How do i make a PK_Verifier from a public ECC key ?

[Franz Brandl]

Hi there,

 

might be a stupid question - but how can i make a PK_Verifier from a known ECC public key ?

 

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 ECIES<ECP>::Encryptor cpub(cpriv);

 cpub.AccessKey().AccessGroupParameters().SetEncodeAsOID(true);
 cpub.GetKey().DEREncode(bq);

 ECDSA<ECP, SHA>::Verifier spub(bq);

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The examples descripe the PK_Verifier constructor to use a ByteQueue which can be made from a Encryptor/Decryptor. The ByteQueue seems to contain a DER encoded structure. Is there a more elegant way as to 'wrap' the 2 key parts in a DER structure manually ? I bet there is ... ;-)

 

Thanks

Franz Brandl

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[Wei Dai]

Mon, May 03, 2004 at 12:05:25PM +0200

Try:

ECDSA<ECP, SHA>::Verifier spub(cpub.GetKey());

[Franz Brandl]

Thanks ... i have an additional question: how do i construct the cpub ? I
dont have a private key which i can supply in the constructor ...

Franz Brandl

-----Ursprüngliche Nachricht-----
Von: Wei Dai [mailto:wei...@weidai.com]
Gesendet: Montag, 03. Mai 2004 20:20
An: crypto...@eskimo.com
Betreff: Re: How do i make a PK_Verifier from a public ECC key ?