libsodium (1.0.19)
1 #ifndef crypto_kdf_hkdf_sha512_H
2 #define crypto_kdf_hkdf_sha512_H
3
4 #include <stddef.h>
5 #include <stdint.h>
6 #include <stdlib.h>
7
8 #include "crypto_kdf.h"
9 #include "crypto_auth_hmacsha512.h"
10 #include "export.h"
11
12 #ifdef __cplusplus
13 # ifdef __GNUC__
14 # pragma GCC diagnostic ignored "-Wlong-long"
15 # endif
16 extern "C" {
17 #endif
18
19 #define crypto_kdf_hkdf_sha512_KEYBYTES crypto_auth_hmacsha512_BYTES
20 SODIUM_EXPORT
21 size_t crypto_kdf_hkdf_sha512_keybytes(void);
22
23 #define crypto_kdf_hkdf_sha512_BYTES_MIN 0U
24 SODIUM_EXPORT
25 size_t crypto_kdf_hkdf_sha512_bytes_min(void);
26
27 #define crypto_kdf_hkdf_sha512_BYTES_MAX (0xff * crypto_auth_hmacsha512_BYTES)
28 SODIUM_EXPORT
29 size_t crypto_kdf_hkdf_sha512_bytes_max(void);
30
31 SODIUM_EXPORT
32 int crypto_kdf_hkdf_sha512_extract(unsigned char prk[crypto_kdf_hkdf_sha512_KEYBYTES],
33 const unsigned char *salt, size_t salt_len,
34 const unsigned char *ikm, size_t ikm_len)
35 __attribute__ ((nonnull(1)));
36
37 SODIUM_EXPORT
38 void crypto_kdf_hkdf_sha512_keygen(unsigned char prk[crypto_kdf_hkdf_sha512_KEYBYTES])
39 __attribute__ ((nonnull));
40
41 SODIUM_EXPORT
42 int crypto_kdf_hkdf_sha512_expand(unsigned char *out, size_t out_len,
43 const char *ctx, size_t ctx_len,
44 const unsigned char prk[crypto_kdf_hkdf_sha512_KEYBYTES])
45 __attribute__ ((nonnull(1)));
46
47 /* ------------------------------------------------------------------------- */
48
49 typedef struct crypto_kdf_hkdf_sha512_state {
50 crypto_auth_hmacsha512_state st;
51 } crypto_kdf_hkdf_sha512_state;
52
53 SODIUM_EXPORT
54 size_t crypto_kdf_hkdf_sha512_statebytes(void);
55
56 SODIUM_EXPORT
57 int crypto_kdf_hkdf_sha512_extract_init(crypto_kdf_hkdf_sha512_state *state,
58 const unsigned char *salt, size_t salt_len)
59 __attribute__ ((nonnull(1)));
60
61 SODIUM_EXPORT
62 int crypto_kdf_hkdf_sha512_extract_update(crypto_kdf_hkdf_sha512_state *state,
63 const unsigned char *ikm, size_t ikm_len)
64 __attribute__ ((nonnull));
65
66 SODIUM_EXPORT
67 int crypto_kdf_hkdf_sha512_extract_final(crypto_kdf_hkdf_sha512_state *state,
68 unsigned char prk[crypto_kdf_hkdf_sha512_KEYBYTES])
69 __attribute__ ((nonnull));
70
71 #ifdef __cplusplus
72 }
73 #endif
74
75 #endif
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