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/*
* $Source$
* $Author$
*
* Copyright 1990 by the Massachusetts Institute of Technology.
*
* For copying and distribution information, please see the file
* <krb5/mit-copyright.h>.
*
* krb5_kdb_encrypt_key(), krb5_kdb_decrypt_key functions
*/
#if !defined(lint) && !defined(SABER)
static char rcsid_encrypt_key_c [] =
"$Id$";
#endif /* !lint & !SABER */
#include <krb5/copyright.h>
#include <krb5/krb5.h>
#include <krb5/kdb5_err.h>
#include <krb5/ext-proto.h>
#include <errno.h>
krb5_error_code
krb5_kdb_encrypt_key(in, out, eblock)
krb5_keyblock *in;
krb5_keyblock *out;
krb5_encrypt_block *eblock;
{
/* encrypted rep has a length encrypted along with the key,
so that we win if the keysize != blocksize.
However, this means an extra block (at least) if
keysize == blocksize. */
krb5_error_code retval;
*out = *in;
out->length = krb5_encrypt_size(in->length, eblock->crypto_entry);
out->length += sizeof(out->length);
out->contents = (krb5_octet *)malloc(out->length);
if (!out->contents) {
out->contents = 0;
out->length = 0;
return ENOMEM;
}
bcopy((char *)&out->length, (char *)out->contents, sizeof(out->length));
if (retval = (*eblock->crypto_entry->
encrypt_func)((krb5_pointer) in->contents,
(krb5_pointer) (((char *) out->contents) +
sizeof(out->length)),
in->length, eblock)) {
free((char *)out->contents);
out->contents = 0;
out->length = 0;
}
return retval;
}
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