/** \file crypt.c openssl-based RSA encryption/decryption routines */
-#include <openssl/pem.h>
#include "para.h"
#include "error.h"
#include "string.h"
-
-/** \cond used to distinguish between loading of private/public key */
-#define LOAD_PUBLIC_KEY 0
-#define LOAD_PRIVATE_KEY 1
-/** \endcond **/
+#include "crypt.h"
static EVP_PKEY *load_key(const char *file, int private)
{
/**
* encrypt a buffer using an RSA key
*
- * \param key_file full path of the rsa key
+ * \param rsa: public rsa key
* \param inbuf the input buffer
* \param len the length of \a inbuf
* \param outbuf the output buffer
*
* \sa RSA_public_encrypt(3)
*/
-int para_encrypt_buffer(char *key_file, unsigned char *inbuf,
+int para_encrypt_buffer(RSA *rsa, unsigned char *inbuf,
const unsigned len, unsigned char *outbuf)
{
- RSA *rsa;
- int ret = get_rsa_key(key_file, &rsa, LOAD_PUBLIC_KEY);
-
- if (ret < 0)
- return ret;
- ret = RSA_public_encrypt(len, inbuf, outbuf, rsa, RSA_PKCS1_PADDING);
+ int ret = RSA_public_encrypt(len, inbuf, outbuf, rsa,
+ RSA_PKCS1_PADDING);
return ret < 0? -E_ENCRYPT : ret;
}
/**
* encrypt the given challenge number
*
- * \param key_file full path of the rsa key
+ * \param rsa: public rsa key
* \param challenge_nr the number to be encrypted
* \param outbuf the output buffer
*
* \sa para_encrypt_buffer()
*
*/
-int para_encrypt_challenge(char *key_file, long unsigned challenge_nr,
+int para_encrypt_challenge(RSA* rsa, long unsigned challenge_nr,
unsigned char *outbuf)
{
unsigned char *inbuf = (unsigned char*) make_message("%lu", challenge_nr);
- int ret = para_encrypt_buffer(key_file, inbuf, strlen((char *)inbuf), outbuf);
+ int ret = para_encrypt_buffer(rsa, inbuf, strlen((char *)inbuf), outbuf);
free(inbuf);
return ret;
}