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#ifndef __LIBSSH2_CRYPTO_H
#define __LIBSSH2_CRYPTO_H
/* Copyright (C) Simon Josefsson
* Copyright (C) The Written Word, Inc.
* Copyright (C) Daniel Stenberg
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#if defined(LIBSSH2_OPENSSL) || defined(LIBSSH2_WOLFSSL)
#include "openssl.h"
#elif defined(LIBSSH2_LIBGCRYPT)
#include "libgcrypt.h"
#elif defined(LIBSSH2_MBEDTLS)
#include "mbedtls.h"
#elif defined(LIBSSH2_OS400QC3)
#include "os400qc3.h"
#elif defined(LIBSSH2_WINCNG)
#include "wincng.h"
#else
#error "no cryptography backend selected"
#endif
#ifdef LIBSSH2_NO_MD5
#undef LIBSSH2_MD5
#define LIBSSH2_MD5 0
#endif
#ifdef LIBSSH2_NO_HMAC_RIPEMD
#undef LIBSSH2_HMAC_RIPEMD
#define LIBSSH2_HMAC_RIPEMD 0
#endif
#ifdef LIBSSH2_NO_DSA
#undef LIBSSH2_DSA
#define LIBSSH2_DSA 0
#endif
#ifdef LIBSSH2_NO_RSA
#undef LIBSSH2_RSA
#define LIBSSH2_RSA 0
#endif
#ifdef LIBSSH2_NO_RSA_SHA1
#undef LIBSSH2_RSA_SHA1
#define LIBSSH2_RSA_SHA1 0
#endif
#ifdef LIBSSH2_NO_ECDSA
#undef LIBSSH2_ECDSA
#define LIBSSH2_ECDSA 0
#endif
#ifdef LIBSSH2_NO_ED25519
#undef LIBSSH2_ED25519
#define LIBSSH2_ED25519 0
#endif
#ifdef LIBSSH2_NO_AES_CTR
#undef LIBSSH2_AES_CTR
#define LIBSSH2_AES_CTR 0
#endif
#ifdef LIBSSH2_NO_AES_CBC
#undef LIBSSH2_AES_CBC
#define LIBSSH2_AES_CBC 0
#endif
#ifdef LIBSSH2_NO_BLOWFISH
#undef LIBSSH2_BLOWFISH
#define LIBSSH2_BLOWFISH 0
#endif
#ifdef LIBSSH2_NO_RC4
#undef LIBSSH2_RC4
#define LIBSSH2_RC4 0
#endif
#ifdef LIBSSH2_NO_CAST
#undef LIBSSH2_CAST
#define LIBSSH2_CAST 0
#endif
#ifdef LIBSSH2_NO_3DES
#undef LIBSSH2_3DES
#define LIBSSH2_3DES 0
#endif
#define LIBSSH2_ED25519_KEY_LEN 32
#define LIBSSH2_ED25519_PRIVATE_KEY_LEN 64
#define LIBSSH2_ED25519_SIG_LEN 64
#if LIBSSH2_RSA
int _libssh2_rsa_new(libssh2_rsa_ctx ** rsa,
const unsigned char *edata,
unsigned long elen,
const unsigned char *ndata,
unsigned long nlen,
const unsigned char *ddata,
unsigned long dlen,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *e1data,
unsigned long e1len,
const unsigned char *e2data,
unsigned long e2len,
const unsigned char *coeffdata, unsigned long coefflen);
int _libssh2_rsa_new_private(libssh2_rsa_ctx ** rsa,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase);
#if LIBSSH2_RSA_SHA1
int _libssh2_rsa_sha1_verify(libssh2_rsa_ctx * rsa,
const unsigned char *sig,
size_t sig_len,
const unsigned char *m, size_t m_len);
int _libssh2_rsa_sha1_sign(LIBSSH2_SESSION * session,
libssh2_rsa_ctx * rsactx,
const unsigned char *hash,
size_t hash_len,
unsigned char **signature,
size_t *signature_len);
#endif
#if LIBSSH2_RSA_SHA2
int _libssh2_rsa_sha2_sign(LIBSSH2_SESSION * session,
libssh2_rsa_ctx * rsactx,
const unsigned char *hash,
size_t hash_len,
unsigned char **signature,
size_t *signature_len);
int _libssh2_rsa_sha2_verify(libssh2_rsa_ctx * rsa,
size_t hash_len,
const unsigned char *sig,
size_t sig_len,
const unsigned char *m, size_t m_len);
#endif
int _libssh2_rsa_new_private_frommemory(libssh2_rsa_ctx ** rsa,
LIBSSH2_SESSION * session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
#endif
#if LIBSSH2_DSA
int _libssh2_dsa_new(libssh2_dsa_ctx ** dsa,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *gdata,
unsigned long glen,
const unsigned char *ydata,
unsigned long ylen,
const unsigned char *x, unsigned long x_len);
int _libssh2_dsa_new_private(libssh2_dsa_ctx ** dsa,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase);
int _libssh2_dsa_sha1_verify(libssh2_dsa_ctx * dsactx,
const unsigned char *sig,
const unsigned char *m, size_t m_len);
int _libssh2_dsa_sha1_sign(libssh2_dsa_ctx * dsactx,
const unsigned char *hash,
size_t hash_len, unsigned char *sig);
int _libssh2_dsa_new_private_frommemory(libssh2_dsa_ctx ** dsa,
LIBSSH2_SESSION * session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
#endif
#if LIBSSH2_ECDSA
int
_libssh2_ecdsa_curve_name_with_octal_new(libssh2_ecdsa_ctx ** ecdsactx,
const unsigned char *k,
size_t k_len,
libssh2_curve_type type);
int
_libssh2_ecdsa_new_private(libssh2_ecdsa_ctx ** ec_ctx,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase);
int
_libssh2_ecdsa_new_private_sk(libssh2_ecdsa_ctx ** ec_ctx,
unsigned char *flags,
const char **application,
const unsigned char **key_handle,
size_t *handle_len,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase);
int
_libssh2_ecdsa_verify(libssh2_ecdsa_ctx * ctx,
const unsigned char *r, size_t r_len,
const unsigned char *s, size_t s_len,
const unsigned char *m, size_t m_len);
int
_libssh2_ecdsa_create_key(LIBSSH2_SESSION *session,
_libssh2_ec_key **out_private_key,
unsigned char **out_public_key_octal,
size_t *out_public_key_octal_len,
libssh2_curve_type curve_type);
int
_libssh2_ecdh_gen_k(_libssh2_bn **k, _libssh2_ec_key *private_key,
const unsigned char *server_public_key,
size_t server_public_key_len);
int
_libssh2_ecdsa_sign(LIBSSH2_SESSION *session, libssh2_ecdsa_ctx *ec_ctx,
const unsigned char *hash, size_t hash_len,
unsigned char **signature, size_t *signature_len);
int _libssh2_ecdsa_new_private_frommemory(libssh2_ecdsa_ctx ** ec_ctx,
LIBSSH2_SESSION * session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
int _libssh2_ecdsa_new_private_frommemory_sk(libssh2_ecdsa_ctx ** ec_ctx,
unsigned char *flags,
const char **application,
const unsigned char **key_handle,
size_t *handle_len,
LIBSSH2_SESSION * session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
libssh2_curve_type
_libssh2_ecdsa_get_curve_type(libssh2_ecdsa_ctx *ec_ctx);
int
_libssh2_ecdsa_curve_type_from_name(const char *name,
libssh2_curve_type *out_type);
#endif /* LIBSSH2_ECDSA */
#if LIBSSH2_ED25519
int
_libssh2_curve25519_new(LIBSSH2_SESSION *session, uint8_t **out_public_key,
uint8_t **out_private_key);
int
_libssh2_curve25519_gen_k(_libssh2_bn **k,
uint8_t private_key[LIBSSH2_ED25519_KEY_LEN],
uint8_t server_public_key[LIBSSH2_ED25519_KEY_LEN]);
int
_libssh2_ed25519_verify(libssh2_ed25519_ctx *ctx, const uint8_t *s,
size_t s_len, const uint8_t *m, size_t m_len);
int
_libssh2_ed25519_new_private(libssh2_ed25519_ctx **ed_ctx,
LIBSSH2_SESSION *session,
const char *filename, const uint8_t *passphrase);
int
_libssh2_ed25519_new_private_sk(libssh2_ed25519_ctx **ed_ctx,
unsigned char *flags,
const char **application,
const unsigned char **key_handle,
size_t *handle_len,
LIBSSH2_SESSION *session,
const char *filename,
const uint8_t *passphrase);
int
_libssh2_ed25519_new_public(libssh2_ed25519_ctx **ed_ctx,
LIBSSH2_SESSION *session,
const unsigned char *raw_pub_key,
const size_t key_len);
int
_libssh2_ed25519_sign(libssh2_ed25519_ctx *ctx, LIBSSH2_SESSION *session,
uint8_t **out_sig, size_t *out_sig_len,
const uint8_t *message, size_t message_len);
int
_libssh2_ed25519_new_private_frommemory(libssh2_ed25519_ctx **ed_ctx,
LIBSSH2_SESSION *session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
int
_libssh2_ed25519_new_private_frommemory_sk(libssh2_ed25519_ctx **ed_ctx,
unsigned char *flags,
const char **application,
const unsigned char **key_handle,
size_t *handle_len,
LIBSSH2_SESSION *session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
#endif /* LIBSSH2_ED25519 */
int _libssh2_cipher_init(_libssh2_cipher_ctx * h,
_libssh2_cipher_type(algo),
unsigned char *iv,
unsigned char *secret, int encrypt);
int _libssh2_cipher_crypt(_libssh2_cipher_ctx * ctx,
_libssh2_cipher_type(algo),
int encrypt, unsigned char *block, size_t blocksize,
int firstlast);
int _libssh2_pub_priv_keyfile(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekey,
const char *passphrase);
int _libssh2_pub_priv_keyfilememory(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase);
int _libssh2_sk_pub_keyfilememory(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
int *algorithm,
unsigned char *flags,
const char **application,
const unsigned char **key_handle,
size_t *handle_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase);
/**
* @function _libssh2_supported_key_sign_algorithms
* @abstract Returns supported algorithms used for upgrading public
* key signing RFC 8332
* @discussion Based on the incoming key_method value, this function
* will return supported algorithms that can upgrade the key method
* @related _libssh2_key_sign_algorithm()
* @param key_method current key method, usually the default key sig method
* @param key_method_len length of the key method buffer
* @result comma separated list of supported upgrade options per RFC 8332, if
* there is no upgrade option return NULL
*/
const char *
_libssh2_supported_key_sign_algorithms(LIBSSH2_SESSION *session,
unsigned char *key_method,
size_t key_method_len);
#endif /* __LIBSSH2_CRYPTO_H */
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