On Sat, Jun 7, 2014 at 7:30 PM, Tim Hudson <t...@cryptsoft.com> wrote: > On 8/06/2014 8:25 AM, Jeffrey Walton wrote: > > I've got n,e,d and loaded them into a RSA*. When I call RSA_check_key, > I get an 0x407b093 error: > > $ openssl errstr 0x407b093 > error:0407B093:rsa routines:RSA_check_key:value missing > > How do I instruct he library to solve for the missing parameters so > the key can be verified? > > > What are you actually trying to do there in terms of your actual context of > usage? Validate the key - nothing more at this point. If the key is not valid, then it can't be used.
> RSA_check_key is about checking that an RSA private key component values are > mathematically consistent with respect to each other - i.e. it is about > checking all the components are correct. Right. e and n are co-prime, e*d === 1 mod n, etc. The other values are just speedup and not required. > It isn't about doing anything > other than that and without n,e,d and p and q there isn't much it is meant > to do. OK, does the library provide the CRT solver (I don't believe so, but I thought I would ask). > Why are you missing p and q in your particular context? http://tools.ietf.org/html/draft-ietf-jose-json-web-signature-26#appendix-A.2 only provides {n,e,d}. Its pretty common in some places to only get {e,d} or {d,n}. Jeff ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
