linux-stable/drivers/target/iscsi/iscsi_target_auth.h
Maurizio Lombardi 19f5f88ed7 scsi: target: iscsi: tie the challenge length to the hash digest size
Link: https://lore.kernel.org/r/20191017131037.9903-3-mlombard@redhat.com
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Tested-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-11-06 00:13:24 -05:00

45 lines
1.3 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ISCSI_CHAP_H_
#define _ISCSI_CHAP_H_
#include <linux/types.h>
#define CHAP_DIGEST_UNKNOWN 0
#define CHAP_DIGEST_MD5 5
#define CHAP_DIGEST_SHA1 6
#define CHAP_DIGEST_SHA256 7
#define CHAP_DIGEST_SHA3_256 8
#define MAX_CHAP_CHALLENGE_LEN 32
#define CHAP_CHALLENGE_STR_LEN 4096
#define MAX_RESPONSE_LENGTH 128 /* sufficient for SHA3 256 */
#define MAX_CHAP_N_SIZE 512
#define MD5_SIGNATURE_SIZE 16 /* 16 bytes in a MD5 message digest */
#define SHA1_SIGNATURE_SIZE 20 /* 20 bytes in a SHA1 message digest */
#define SHA256_SIGNATURE_SIZE 32 /* 32 bytes in a SHA256 message digest */
#define SHA3_256_SIGNATURE_SIZE 32 /* 32 bytes in a SHA3 256 message digest */
#define CHAP_STAGE_CLIENT_A 1
#define CHAP_STAGE_SERVER_AIC 2
#define CHAP_STAGE_CLIENT_NR 3
#define CHAP_STAGE_CLIENT_NRIC 4
#define CHAP_STAGE_SERVER_NR 5
struct iscsi_node_auth;
struct iscsi_conn;
extern u32 chap_main_loop(struct iscsi_conn *, struct iscsi_node_auth *, char *, char *,
int *, int *);
struct iscsi_chap {
unsigned char id;
unsigned char challenge[MAX_CHAP_CHALLENGE_LEN];
unsigned int challenge_len;
unsigned char *digest_name;
unsigned int digest_size;
unsigned int authenticate_target;
unsigned int chap_state;
} ____cacheline_aligned;
#endif /*** _ISCSI_CHAP_H_ ***/