> -----Original Message----- > From: Nikos Mavrogiannopoulos [mailto:[email protected]] Of > Behalf Of Nikos Mavrogiannopoulos > Sent: Thursday, December 16, 2010 8:12 AM > To: Murray S. Kucherawy > Cc: [email protected] > Subject: Re: RSA sign/verify and hash generation functions > > > One thing I need that this public key interface doesn't appear to > > have is a way to get the key size from a public key. Could that be > > added, or if it's there someplace, can you point me to it? > > What do you mean by key size? The indicator returned by > gnutls_pubkey_get_pk_algorithm()?
It's telling me the key is zero bits long. My call sequence is: bits = 0; gnutls_pubkey_init(&X) gnutls_pubkey_import(X, &keydata, GNUTLS_X509_FMT_DER); gnutls_pubkey_verify_hash(X, 0, &digest, &signature); <== works; returns 1 gnutls_pubkey_get_pk_algorithm(X, &bits); assert(bits > 0); <== FAILS It looks like key->bits is never set to anything by gnutls_pubkey_import(). > I've just added (not tested yet) gnutls_pubkey_import_privkey() that > will import the public parameters from a gnutls_privkey_t structure. > > Thus it would still be quite some calls, but you don't need to export > anything. How does it look? > > gnutls_x509_privkey_init(A) > gnutls_x509_privkey_import(A) > gnutls_privkey_init(P) > gnutls_privkey_import_x509(P,A) > gnutls_pubkey_init(B) > gnutls_pubkey_import_privkey(B,P) Works for me. Let me know when you'd like me to grab a snapshot and try it. -MSK
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