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Commit | Line | Data |
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18f8bd28 CP |
1 | #ifndef __helix_H |
2 | #define __helix_H | |
3 | ||
4 | typedef unsigned long WORD; | |
5 | typedef unsigned char UCHAR; | |
6 | ||
7 | #define NONCE_LEN 16 | |
8 | #define MAC_LEN 16 | |
9 | ||
10 | /* HELIX variables */ | |
11 | typedef struct helix_ctx { | |
12 | WORD h_iplus8[2]; /* block number maintained in two parts */ | |
13 | WORD K[8]; /* expanded key */ | |
14 | WORD N[8]; /* expanded nonce */ | |
15 | int l_u; /* length of user key */ | |
16 | WORD A, B, C, D, E; /* Z_0..Z_4 in the paper */ | |
17 | } helix_ctx; | |
18 | ||
19 | #undef TEST | |
20 | ||
21 | void | |
22 | h_key(struct helix_ctx *ctx, unsigned char *U, int U_len); | |
23 | void | |
24 | h_nonce(struct helix_ctx *ctx, UCHAR nonce[16]); | |
25 | void | |
26 | h_encrypt(struct helix_ctx *ctx, UCHAR *buf, int n, UCHAR macbuf[16]); | |
27 | void | |
28 | h_decrypt(struct helix_ctx *ctx, UCHAR *buf, int n, UCHAR macbuf[16]); | |
29 | ||
30 | #endif |