1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _ISCSI_CHAP_H_ 3*4882a593Smuzhiyun #define _ISCSI_CHAP_H_ 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/types.h> 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #define CHAP_DIGEST_UNKNOWN 0 8*4882a593Smuzhiyun #define CHAP_DIGEST_MD5 5 9*4882a593Smuzhiyun #define CHAP_DIGEST_SHA1 6 10*4882a593Smuzhiyun #define CHAP_DIGEST_SHA256 7 11*4882a593Smuzhiyun #define CHAP_DIGEST_SHA3_256 8 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #define MAX_CHAP_CHALLENGE_LEN 32 14*4882a593Smuzhiyun #define CHAP_CHALLENGE_STR_LEN 4096 15*4882a593Smuzhiyun #define MAX_RESPONSE_LENGTH 128 /* sufficient for SHA3 256 */ 16*4882a593Smuzhiyun #define MAX_CHAP_N_SIZE 512 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #define MD5_SIGNATURE_SIZE 16 /* 16 bytes in a MD5 message digest */ 19*4882a593Smuzhiyun #define SHA1_SIGNATURE_SIZE 20 /* 20 bytes in a SHA1 message digest */ 20*4882a593Smuzhiyun #define SHA256_SIGNATURE_SIZE 32 /* 32 bytes in a SHA256 message digest */ 21*4882a593Smuzhiyun #define SHA3_256_SIGNATURE_SIZE 32 /* 32 bytes in a SHA3 256 message digest */ 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun #define CHAP_STAGE_CLIENT_A 1 24*4882a593Smuzhiyun #define CHAP_STAGE_SERVER_AIC 2 25*4882a593Smuzhiyun #define CHAP_STAGE_CLIENT_NR 3 26*4882a593Smuzhiyun #define CHAP_STAGE_CLIENT_NRIC 4 27*4882a593Smuzhiyun #define CHAP_STAGE_SERVER_NR 5 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun struct iscsi_node_auth; 30*4882a593Smuzhiyun struct iscsi_conn; 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun extern u32 chap_main_loop(struct iscsi_conn *, struct iscsi_node_auth *, char *, char *, 33*4882a593Smuzhiyun int *, int *); 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun struct iscsi_chap { 36*4882a593Smuzhiyun unsigned char id; 37*4882a593Smuzhiyun unsigned char challenge[MAX_CHAP_CHALLENGE_LEN]; 38*4882a593Smuzhiyun unsigned int challenge_len; 39*4882a593Smuzhiyun unsigned char *digest_name; 40*4882a593Smuzhiyun unsigned int digest_size; 41*4882a593Smuzhiyun unsigned int authenticate_target; 42*4882a593Smuzhiyun unsigned int chap_state; 43*4882a593Smuzhiyun } ____cacheline_aligned; 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun #endif /*** _ISCSI_CHAP_H_ ***/ 46