[EMAIL PROTECTED] wrote:
Hi all,
I've created a method to generate ECDH Key, based on ecdhtest.c, available
at /openssl/test directory.
But I'm facing some trouble to compile it.
I've inserted the following code in the begining of the file, acording
ecdhtest.c,
static const int KDF1_SHA1_len = 20;
static void *KDF1_SHA1(const void *in, size_t inlen, void *out, size_t
*outlen)
{
#ifndef OPENSSL_NO_SHA
if (*outlen < SHA_DIGEST_LENGTH)
return NULL;
else
*outlen = SHA_DIGEST_LENGTH;
return SHA1(in, inlen, out);
#else
return NULL;
#endif
}
in order to use the ECDH method:
out=ECDH_compute_key(buf,len,EC_KEY_get0_public_key(public_key),ec_key,KDF1_SHA1);
When I compile it, the following messages appear.
aodv/aodv.cc: In function ‘void* KDF1_SHA1(const void*, size_t, void*,
size_t*)’:
aodv/aodv.cc:52: error: invalid conversion from ‘const void*’ to ‘const
unsigned char*’
aodv/aodv.cc:52: error: initializing argument 1 of ‘unsigned char*
SHA1(const unsigned char*, size_t, unsigned char*)’
aodv/aodv.cc:52: error: invalid conversion from ‘void*’ to ‘unsigned char*’
aodv/aodv.cc:52: error: initializing argument 3 of ‘unsigned char*
SHA1(const unsigned char*, size_t, unsigned char*)
I've already looked for the SHA1 constructor, and I don't know what is
going wrong.
Has anybody already faced this problem?
if not, could you give me some tips in order to solve this problem?
it looks like your compiler doesn't like the implicit conversion
from "const void *" to "const unsigned char *" ... Did you try to
use a cast ?
Cheers,
Nils
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