I'm not much of an expert with any of this, but you may want to look at
some of the return values of some of the functions to make sure
everything is good, such as on EVP_EncryptFinal. Please take a look at
some code I did up last summer in C++ (but it is almost all C), located at
http://lunir.com/Encryption.cpp. The Function in particular would be int
Encryption::encrypt(std::ifstream &istream, std::ofstream &ostream). It
deals with streams but converts it all into cstrings, so it should
roughtly be the same. Hope this helps.
--
Matthew Clarkson
On Mon, 30 Jan 2006, Felix Dorner wrote:
Hi,
the following code executes once, and does fine. Calling the function a
second time gives a segfault during the call marked by "-->"
unsigned char *encrypt_message(unsigned char *message, int inl, int *outl)
{
EVP_CIPHER_CTX ctx;
EVP_CIPHER_CTX_init(&ctx);
-->EVP_EncryptInit(&ctx, EVP_bf_ecb(), NULL, NULL);
EVP_CIPHER_CTX_set_key_length(&ctx, SHA_DIGEST_LENGTH);
EVP_EncryptInit(&ctx, NULL, k, NULL);
char *ret;
int tmp, ol;
ol = 0;
ret = (char *)malloc(inl + EVP_CIPHER_CTX_block_size(&ctx));
EVP_EncryptUpdate(&ctx, &ret[ol], &tmp, message, inl);
ol = tmp;
EVP_EncryptFinal(&ctx, &ret[ol], &tmp);
*outl = ol+tmp;
return ret;
}
Anything obvious that might lead to the segfault?
Thanks,
Felix
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______________________________________________________________________
OpenSSL Project http://www.openssl.org
User Support Mailing List openssl-users@openssl.org
Automated List Manager [EMAIL PROTECTED]
