/*
** Destroy a AES KeyWrap context.
** "cx" the context
** "freeit" if PR_TRUE then free the object as well as its sub-objects
*/
extern void
AESKeyWrap_DestroyContext(AESKeyWrapContext *cx, PRBool freeit)
{
if (cx) {
AES_DestroyContext(&cx->aescx, PR_FALSE);
/* memset(cx, 0, sizeof *cx); */
if (freeit)
PORT_Free(cx);
}
}
/* AES_CreateContext
*
* create a new context for Rijndael operations
*/
AESContext *
AES_CreateContext(const unsigned char *key, const unsigned char *iv,
int mode, int encrypt,
unsigned int keysize, unsigned int blocksize)
{
AESContext *cx = AES_AllocateContext();
if (cx) {
SECStatus rv = AES_InitContext(cx, key, keysize, iv, mode, encrypt,
blocksize);
if (rv != SECSuccess) {
AES_DestroyContext(cx, PR_TRUE);
cx = NULL;
}
}
return cx;
}