On Wed, Apr 15, 2009 at 08:19:34PM +0300, Atti wrote:
> Okay, well as I said, I compiled and ran the example from the OpenSSL
> docs (http://openssl.org/docs/crypto/EVP_EncryptInit.html#EXAMPLES),
> which has an IV, and the application still behaves the same.
What key and IV sizes does the following code variant report? On
a Unix system both 0.9.8i and 1.0.0-beta1 produce consistent
identical ciphertexts that decrypt via "openssl bf -in cipher.bin -K
000102030405060708090A0B0C0D0E0F -iv 0102030405060708 -d" as advertised.
#include <openssl/evp.h>
#include <stdio.h>
int do_crypt(char *outfile)
{
unsigned char outbuf[1024];
int outlen, tmplen;
unsigned char key[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
unsigned char iv[] = {1,2,3,4,5,6,7,8};
char intext[] = "Some Crypto Text";
EVP_CIPHER_CTX ctx;
FILE *out;
EVP_CIPHER_CTX_init(&ctx);
EVP_EncryptInit_ex(&ctx, EVP_bf_cbc(), NULL, key, iv);
fprintf(stderr, "key length=%d, IV length=%d\n",
EVP_CIPHER_CTX_key_length(&ctx),
EVP_CIPHER_CTX_iv_length(&ctx));
if(!EVP_EncryptUpdate(&ctx, outbuf, &outlen, intext, strlen(intext)))
return 0;
if(!EVP_EncryptFinal_ex(&ctx, outbuf + outlen, &tmplen))
return 0;
outlen += tmplen;
EVP_CIPHER_CTX_cleanup(&ctx);
out = fopen(outfile, "wb");
fwrite(outbuf, 1, outlen, out);
fclose(out);
return 1;
}
int main(int argc, char *argv[]) { return !do_crypt(argv[1]); }
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