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1/* $OpenBSD: crypto_api.h,v 1.10 2025/10/30 23:19:33 djm Exp $ */
2
3/*
4 * Assembled from generated headers and source files by Markus Friedl.
5 * Placed in the public domain.
6 */
7
8#ifndef crypto_api_h
9#define crypto_api_h
10
11#include <stdint.h>
12#include <stdlib.h>
13
14typedef int8_t crypto_int8;
15typedef uint8_t crypto_uint8;
16typedef int16_t crypto_int16;
17typedef uint16_t crypto_uint16;
18typedef int32_t crypto_int32;
19typedef uint32_t crypto_uint32;
20typedef int64_t crypto_int64;
21typedef uint64_t crypto_uint64;
22
23#define randombytes(buf, buf_len) arc4random_buf((buf), (buf_len))
24#define small_random32() arc4random()
25
26#define crypto_hash_sha512_BYTES 64U
27
28#ifdef WITH_OPENSSL
29#include <openssl/evp.h>
30static inline int
31crypto_hash_sha512(unsigned char *out, const unsigned char *in,
32 unsigned long long inlen)
33{
34
35 if (!EVP_Digest(in, inlen, out, NULL, EVP_sha512(), NULL))
36 return -1;
37 return 0;
38}
39#else /* WITH_OPENSSL */
40# include <sha2.h>
41static inline int
42crypto_hash_sha512(unsigned char *out, const unsigned char *in,
43 unsigned long long inlen)
44{
45
46 SHA2_CTX ctx;
47
48 SHA512Init(&ctx);
49 SHA512Update(&ctx, in, inlen);
50 SHA512Final(out, &ctx);
51 return 0;
52}
53#endif /* WITH_OPENSSL */
54
55#define crypto_sign_ed25519_SECRETKEYBYTES 64U
56#define crypto_sign_ed25519_PUBLICKEYBYTES 32U
57#define crypto_sign_ed25519_BYTES 64U
58
59int crypto_sign_ed25519(unsigned char *, unsigned long long *,
60 const unsigned char *, unsigned long long, const unsigned char *);
61int crypto_sign_ed25519_open(unsigned char *, unsigned long long *,
62 const unsigned char *, unsigned long long, const unsigned char *);
63int crypto_sign_ed25519_keypair(unsigned char *, unsigned char *);
64
65#define crypto_kem_sntrup761_PUBLICKEYBYTES 1158
66#define crypto_kem_sntrup761_SECRETKEYBYTES 1763
67#define crypto_kem_sntrup761_CIPHERTEXTBYTES 1039
68#define crypto_kem_sntrup761_BYTES 32
69
70int crypto_kem_sntrup761_enc(unsigned char *cstr, unsigned char *k,
71 const unsigned char *pk);
72int crypto_kem_sntrup761_dec(unsigned char *k,
73 const unsigned char *cstr, const unsigned char *sk);
74int crypto_kem_sntrup761_keypair(unsigned char *pk, unsigned char *sk);
75
76#define crypto_kem_mlkem768_PUBLICKEYBYTES 1184
77#define crypto_kem_mlkem768_SECRETKEYBYTES 2400
78#define crypto_kem_mlkem768_CIPHERTEXTBYTES 1088
79#define crypto_kem_mlkem768_BYTES 32
80
81#endif /* crypto_api_h */