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#ifndef _CRYPTO_GCM_H
#define _CRYPTO_GCM_H
#include <linux/errno.h>
#define GCM_AES_IV_SIZE 12
#define GCM_RFC4106_IV_SIZE 8
#define GCM_RFC4543_IV_SIZE 8
/*
* validate authentication tag for GCM
*/
static inline int crypto_gcm_check_authsize(unsigned int authsize)
{
switch (authsize) {
case 4:
case 8:
case 12:
case 13:
case 14:
case 15:
case 16:
break;
default:
return -EINVAL;
}
return 0;
}
/*
* validate authentication tag for RFC4106
*/
static inline int crypto_rfc4106_check_authsize(unsigned int authsize)
{
switch (authsize) {
case 8:
case 12:
case 16:
break;
default:
return -EINVAL;
}
return 0;
}
/*
* validate assoclen for RFC4106/RFC4543
*/
static inline int crypto_ipsec_check_assoclen(unsigned int assoclen)
{
switch (assoclen) {
case 16:
case 20:
break;
default:
return -EINVAL;
}
return 0;
}
#endif