151 lines
5.0 KiB
C
151 lines
5.0 KiB
C
/*
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* Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* Internal EC functions for other submodules: not for application use */
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#ifndef OSSL_CRYPTO_ECX_H
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# define OSSL_CRYPTO_ECX_H
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# pragma once
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# include <openssl/opensslconf.h>
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# ifndef OPENSSL_NO_EC
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# include <openssl/core.h>
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# include <openssl/e_os2.h>
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# include <openssl/crypto.h>
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# include "internal/refcount.h"
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# include "crypto/types.h"
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# define X25519_KEYLEN 32
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# define X448_KEYLEN 56
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# define ED25519_KEYLEN 32
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# define ED448_KEYLEN 57
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# define MAX_KEYLEN ED448_KEYLEN
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# define X25519_BITS 253
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# define X25519_SECURITY_BITS 128
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# define X448_BITS 448
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# define X448_SECURITY_BITS 224
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# define ED25519_BITS 256
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/* RFC8032 Section 8.5 */
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# define ED25519_SECURITY_BITS 128
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# define ED25519_SIGSIZE 64
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# define ED448_BITS 456
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/* RFC8032 Section 8.5 */
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# define ED448_SECURITY_BITS 224
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# define ED448_SIGSIZE 114
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typedef enum {
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ECX_KEY_TYPE_X25519,
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ECX_KEY_TYPE_X448,
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ECX_KEY_TYPE_ED25519,
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ECX_KEY_TYPE_ED448
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} ECX_KEY_TYPE;
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#define KEYTYPE2NID(type) \
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((type) == ECX_KEY_TYPE_X25519 \
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? EVP_PKEY_X25519 \
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: ((type) == ECX_KEY_TYPE_X448 \
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? EVP_PKEY_X448 \
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: ((type) == ECX_KEY_TYPE_ED25519 \
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? EVP_PKEY_ED25519 \
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: EVP_PKEY_ED448)))
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struct ecx_key_st {
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OSSL_LIB_CTX *libctx;
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char *propq;
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unsigned int haspubkey:1;
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unsigned char pubkey[MAX_KEYLEN];
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unsigned char *privkey;
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size_t keylen;
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ECX_KEY_TYPE type;
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CRYPTO_REF_COUNT references;
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CRYPTO_RWLOCK *lock;
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};
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size_t ossl_ecx_key_length(ECX_KEY_TYPE type);
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ECX_KEY *ossl_ecx_key_new(OSSL_LIB_CTX *libctx, ECX_KEY_TYPE type,
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int haspubkey, const char *propq);
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void ossl_ecx_key_set0_libctx(ECX_KEY *key, OSSL_LIB_CTX *libctx);
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unsigned char *ossl_ecx_key_allocate_privkey(ECX_KEY *key);
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void ossl_ecx_key_free(ECX_KEY *key);
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int ossl_ecx_key_up_ref(ECX_KEY *key);
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ECX_KEY *ossl_ecx_key_dup(const ECX_KEY *key, int selection);
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int ossl_x25519(uint8_t out_shared_key[32], const uint8_t private_key[32],
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const uint8_t peer_public_value[32]);
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void ossl_x25519_public_from_private(uint8_t out_public_value[32],
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const uint8_t private_key[32]);
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int
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ossl_ed25519_public_from_private(OSSL_LIB_CTX *ctx, uint8_t out_public_key[32],
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const uint8_t private_key[32],
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const char *propq);
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int
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ossl_ed25519_sign(uint8_t *out_sig, const uint8_t *message, size_t message_len,
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const uint8_t public_key[32], const uint8_t private_key[32],
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OSSL_LIB_CTX *libctx, const char *propq);
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int
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ossl_ed25519_verify(const uint8_t *message, size_t message_len,
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const uint8_t signature[64], const uint8_t public_key[32],
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OSSL_LIB_CTX *libctx, const char *propq);
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int
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ossl_ed448_public_from_private(OSSL_LIB_CTX *ctx, uint8_t out_public_key[57],
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const uint8_t private_key[57], const char *propq);
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int
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ossl_ed448_sign(OSSL_LIB_CTX *ctx, uint8_t *out_sig, const uint8_t *message,
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size_t message_len, const uint8_t public_key[57],
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const uint8_t private_key[57], const uint8_t *context,
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size_t context_len, const char *propq);
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int
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ossl_ed448_verify(OSSL_LIB_CTX *ctx, const uint8_t *message, size_t message_len,
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const uint8_t signature[114], const uint8_t public_key[57],
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const uint8_t *context, size_t context_len, const char *propq);
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int
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ossl_x448(uint8_t out_shared_key[56], const uint8_t private_key[56],
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const uint8_t peer_public_value[56]);
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void
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ossl_x448_public_from_private(uint8_t out_public_value[56],
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const uint8_t private_key[56]);
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/* Backend support */
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typedef enum {
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KEY_OP_PUBLIC,
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KEY_OP_PRIVATE,
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KEY_OP_KEYGEN
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} ecx_key_op_t;
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ECX_KEY *ossl_ecx_key_op(const X509_ALGOR *palg,
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const unsigned char *p, int plen,
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int pkey_id, ecx_key_op_t op,
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OSSL_LIB_CTX *libctx, const char *propq);
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int ossl_ecx_public_from_private(ECX_KEY *key);
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int ossl_ecx_key_fromdata(ECX_KEY *ecx, const OSSL_PARAM params[],
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int include_private);
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ECX_KEY *ossl_ecx_key_from_pkcs8(const PKCS8_PRIV_KEY_INFO *p8inf,
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OSSL_LIB_CTX *libctx, const char *propq);
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ECX_KEY *ossl_evp_pkey_get1_X25519(EVP_PKEY *pkey);
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ECX_KEY *ossl_evp_pkey_get1_X448(EVP_PKEY *pkey);
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ECX_KEY *ossl_evp_pkey_get1_ED25519(EVP_PKEY *pkey);
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ECX_KEY *ossl_evp_pkey_get1_ED448(EVP_PKEY *pkey);
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# endif /* OPENSSL_NO_EC */
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#endif
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