RSA sign/verify and hash generation functions
Murray S. Kucherawy
msk at cloudmark.com
Thu Dec 16 18:49:39 CET 2010
> -----Original Message-----
> From: Nikos Mavrogiannopoulos [mailto:n.mavrogiannopoulos at gmail.com] Of Behalf Of Nikos Mavrogiannopoulos
> Sent: Thursday, December 16, 2010 8:12 AM
> To: Murray S. Kucherawy
> Cc: help-gnutls at gnu.org
> 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
It's telling me the key is zero bits long. My call sequence is:
bits = 0;
gnutls_pubkey_import(X, &keydata, GNUTLS_X509_FMT_DER);
gnutls_pubkey_verify_hash(X, 0, &digest, &signature); <== works; returns 1
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?
Works for me. Let me know when you'd like me to grab a snapshot and try it.
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