Thanks for your reply.
I just random value i have given.
how did you calculate that ?.
like for 224 curve point will be 56 byte long?
what about private key for 224 it will be 28 byte long?.
Ya i observed i am not able to calculate these test values thats why
its failing.
Can you give me any point value for 224 ,also for private key value.
if possible can you guide me where can i read these details.
test values where can i get.
> The hex should be 04|x|y which would be 43 bytes, so string whats is the
> meaning of this line?
On 13 December 2012 23:05, Douglas E. Engert <deeng...@anl.gov> wrote:
> Where did you get the hex version of the point?
> It does not look correct, its the wrong length.
> For the curve you picked, The field size is 21 bytes.
> The hex should be 04|x|y which would be 43 bytes, so string
> should be 86 bytes with a leading 04.
>
>
>
> On 12/13/2012 12:23 AM, jeetendra gangele wrote:
>>
>> Hi
>> I have written below code but it always failed with
>>
>> EC_KEY_check_key failed:
>> error:100A0066:lib(16):func(160):reason(102)
>>
>>
>> 1 #include <stdio.h>
>> 2 #include "openssl/sha.h"
>> 3 #include <time.h>
>> 4
>> 5 #include <openssl/ecdsa.h>
>> 6 #include <openssl/obj_mac.h>
>> 7 #include <openssl/aes.h>
>> 8 #include <openssl/ecdh.h>
>> 9 #include <openssl/rand.h>
>> 10 #include <string.h>
>> 11 #include <openssl/ecdh.h>
>> 12 #include <openssl/bn.h>
>> 13 int main()
>> 14 {
>> 15 EC_KEY *key = NULL;
>> 16 EC_POINT *pub_key;
>> 17 const EC_GROUP *group;
>> 18
>> 19
>> 20 key = EC_KEY_new_by_curve_name(NID_sect163k1);
>> 21 group = EC_KEY_get0_group(key);
>> 22 pub_key = EC_POINT_new(group);
>> 23
>> 24 EC_POINT_hex2point(group,
>> 25
>> "369368AF243193D001E39CE76BB1D5DA08A9BC0A63307AB352338E5EA5C0E05A0C2531866F3E3C2702",
>> pub_key, NULL);
>> 26
>> 27 EC_KEY_set_public_key(key, pub_key);
>> 28
>> 29 if (!EC_KEY_check_key(key)) {
>> 30 printf("EC_KEY_check_key failed:\n");
>> 31 printf("%s\n",ERR_error_string(ERR_get_error(),NULL));
>> 32 } else {
>> 33 printf("Public key verified OK\n");
>> 34 }
>> 35 return 1;
>> 36 }
>> ______________________________________________________________________
>> OpenSSL Project http://www.openssl.org
>> Development Mailing List openssl-dev@openssl.org
>> Automated List Manager majord...@openssl.org
>>
>>
>
> --
>
> Douglas E. Engert <deeng...@anl.gov>
> Argonne National Laboratory
> 9700 South Cass Avenue
> Argonne, Illinois 60439
> (630) 252-5444
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