2 * Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* Internal EC functions for other submodules: not for application use */
12 #ifndef OSSL_CRYPTO_ECX_H
13 # define OSSL_CRYPTO_ECX_H
14 # include <openssl/opensslconf.h>
16 # ifndef OPENSSL_NO_EC
18 # include <openssl/e_os2.h>
19 # include <openssl/crypto.h>
20 # include "internal/refcount.h"
22 # define X25519_KEYLEN 32
23 # define X448_KEYLEN 56
24 # define ED25519_KEYLEN 32
25 # define ED448_KEYLEN 57
27 # define MAX_KEYLEN ED448_KEYLEN
29 # define X25519_BITS 253
30 # define X25519_SECURITY_BITS 128
32 # define X448_BITS 448
33 # define X448_SECURITY_BITS 224
35 # define ED25519_BITS 256
36 /* RFC8032 Section 8.5 */
37 # define ED25519_SECURITY_BITS 128
38 # define ED25519_SIGSIZE 64
40 # define ED448_BITS 456
41 /* RFC8032 Section 8.5 */
42 # define ED448_SECURITY_BITS 224
43 # define ED448_SIGSIZE 114
46 unsigned int haspubkey:1;
47 unsigned char pubkey[MAX_KEYLEN];
48 unsigned char *privkey;
50 CRYPTO_REF_COUNT references;
54 typedef struct ecx_key_st ECX_KEY;
56 ECX_KEY *ecx_key_new(size_t keylen, int haspubkey);
57 unsigned char *ecx_key_allocate_privkey(ECX_KEY *key);
58 void ecx_key_free(ECX_KEY *key);
59 int ecx_key_up_ref(ECX_KEY *key);
61 int X25519(uint8_t out_shared_key[32], const uint8_t private_key[32],
62 const uint8_t peer_public_value[32]);
63 void X25519_public_from_private(uint8_t out_public_value[32],
64 const uint8_t private_key[32]);
66 int X448(uint8_t out_shared_key[56], const uint8_t private_key[56],
67 const uint8_t peer_public_value[56]);
68 void X448_public_from_private(uint8_t out_public_value[56],
69 const uint8_t private_key[56]);
71 int s390x_x25519_mul(unsigned char u_dst[32],
72 const unsigned char u_src[32],
73 const unsigned char d_src[32]);
74 int s390x_x448_mul(unsigned char u_dst[56],
75 const unsigned char u_src[56],
76 const unsigned char d_src[56]);
78 # endif /* OPENSSL_NO_EC */