On 28 mar, 15:28, Robert Relyea <rrel...@redhat.com> wrote: > On 03/28/2011 05:32 AM, Superpacko wrote: > > > > > > > > > On 23 mar, 14:40, Robert Relyea <rrel...@redhat.com> wrote: > >> On 03/23/2011 06:24 AM, Superpacko wrote:> Well, so i 've been told that i > >> shuld be able to extract the MPI as > >>> bytes and pass it to NSS since GPG original key format is PEM, i > >>> should be able to use MPIs data as raw bytes. > >> If it's really PEM (which should be a printable string), then you should > >> be able to pull out the Base 64 portion and pass it to the NSS atob > >> routine: > > >> ATOB_ConvertAsciiToItem() > > >> It will return a secItem which has a date and a length. This secitem is > >> DER data. > > >> bob > > >> PEM is an ascii file in which all the data outside specific wrappers: > >> ( ------------------------- BEGIN xxxxx > >> ---------------------------------), > >> (---------------------- END xxx ------------------------) > >> are ignored. Inside the wrappers is base 64 encoded binary. Base 64 > >> takes the 27 letters of the alphabet, both upper and lower case, with > >> the 10 digits, plus and / and assigns each a value between 0 and 64. The > >> binary blob is then considered a long binary integer. That integer is > >> converted to base 64 using those printable digits. The encoding used 4 > >> base 64 digits to encode 3 binary bytes (base 64 is 6 bits per value) > > >> The PEM base64 pem data is DER data, so the nss der functions should > >> work for them, once you've decoded the base 64. > > >> bob > > >>> The thing is that the only function i found that takes unsigned char* > >>> as argument is PK11_MakeKEAPubKey, and when i try to encrypt using > >>> that key, i get error 8178 (BAD KEY) > >>> So is there a way to import a public and private key with raw bytes? > >>> so far i've seen that most functions need SECKEYPrivateKeyInfo and > >>> stuff like that. > > Thanks for the help, im going to try to extract this information from > > the key stored in the MPIs. > > Is there a way to import an RSA key from external source that is not > > DER encoded nor KEA? > > Do you mean an RSA public key or an RSA private key? > > bob > > > > > > > > > otherwise im gonna have to build a custom PK11_MakeRSAPubKey to create > > a SECKEYPublicKey from raw bytes, filling the > > modulusItem.data = modulusData; > > modulusItem.len = modulusLen; > > exponentItem.data = exponentData; > > exponentItem.len = exponentLen; > > > with the info from the raw bytes. > > > thanks again!
Is still anyone here? I've managed to imort public and private keys from GPG to NSS. The only help i need now is with the RSA encryption. Im generating a asymmetric key with random bytes, and i need to encrypt this key with RSA. How am i supposed to proceed? according to what i read, i cant just encrypt the whole thing with RSA, instead i have to turn the asymmetric key into a big number and then encrypt the number with RSA. is that correct? is there any other way? how would those options be implemented using NSS functions? thanks! Sebastian. -- dev-tech-crypto mailing list dev-tech-crypto@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-tech-crypto
