hmac.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Copyright (C) 1998 by the FundsXpress, INC.
*
* All rights reserved.
*
* Export of this software from the United States of America may require
* a specific license from the United States Government. It is the
* responsibility of any person or organization contemplating export to
* obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of FundsXpress. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. FundsXpress makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <k5-int.h>
#ifdef _KERNEL
/*
* In kernel, use the Kernel encryption framework HMAC
* operation, its far more efficient than the MIT method.
* Also, a template is used to further improve performance.
*/
/* ARGSUSED */
{
int rv = CRYPTO_FAILED;
return (rv);
}
return (rv);
}
mac_mech.cm_param_len = 0;
if (rv != CRYPTO_SUCCESS) {
}
return(rv);
}
#else
/* Userland implementation of HMAC algorithm */
/*
* the HMAC transform looks like:
*
* H(K XOR opad, H(K XOR ipad, text))
*
* where H is a cryptographic hash
* K is an n byte key
* ipad is the byte 0x36 repeated blocksize times
* opad is the byte 0x5c repeated blocksize times
* and text is the data being protected
*/
krb5_const unsigned int icount,
{
int i;
return(EINVAL);
}
return(EINVAL);
}
return(EINVAL);
}
return(EINVAL);
}
return(KRB5_CRYPTO_INTERNAL);
return(KRB5_BAD_MSIZE);
/* if this isn't > 0, then there won't be enough space in this
array to compute the outer hash */
if (icount == 0)
return(KRB5_CRYPTO_INTERNAL);
/* allocate space for the xor key, hash input vector, and inner hash */
return(ENOMEM);
return(ENOMEM);
}
return(ENOMEM);
}
/* create the inner padded key */
}
/* compute the inner hash */
for (i=0; i<icount; i++) {
}
goto cleanup;
/* create the outer padded key */
/* compute the outer hash */
/* ret is set correctly by the prior call */
return(ret);
}
#endif /* _KERNEL */