mirror of
https://github.com/yuzu-emu/mbedtls.git
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147 lines
3.8 KiB
C
147 lines
3.8 KiB
C
/**
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* \file pk.h
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*
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* \brief Public Key abstraction layer
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*
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* Copyright (C) 2006-2013, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef POLARSSL_PK_H
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#define POLARSSL_PK_H
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#include "config.h"
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#if defined(POLARSSL_RSA_C)
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#include "rsa.h"
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#endif
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#if defined(POLARSSL_ECP_C)
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#include "ecp.h"
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#endif
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#if defined(POLARSSL_ECDSA_C)
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#include "ecdsa.h"
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#endif
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#define POLARSSL_ERR_PK_MALLOC_FAILED -0x2F80 /**< Memory alloation failed. */
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#define POLARSSL_ERR_PK_TYPE_MISMATCH -0x2F00 /**< Type mismatch, eg attempt to use a RSA key as EC, or to modify key type */
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#if defined(POLARSSL_RSA_C)
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/**
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* Quick access to an RSA context inside a PK context.
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*
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* \warning You must make sure the PK context actually holds an RSA context
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* before using this macro!
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*/
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#define pk_rsa( pk ) ( (rsa_context *) (pk).data )
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#endif /* POLARSSL_RSA_C */
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#if defined(POLARSSL_ECP_C)
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/**
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* Quick access to an EC context inside a PK context.
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*
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* \warning You must make sure the PK context actually holds an EC context
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* before using this macro!
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*/
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#define pk_ec( pk ) ( (ecp_keypair *) (pk).data )
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#endif /* POLARSSL_ECP_C */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief Public key types
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*/
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typedef enum {
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POLARSSL_PK_NONE=0,
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POLARSSL_PK_RSA,
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POLARSSL_PK_ECKEY,
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POLARSSL_PK_ECKEY_DH,
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POLARSSL_PK_ECDSA,
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} pk_type_t;
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/**
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* \brief Public key info
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*/
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typedef struct
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{
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/** Public key type */
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pk_type_t type;
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/** Type name */
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const char *name;
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/** Get key size in bits */
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size_t (*get_size)( void * );
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/** Tell if the context implements this type (eg ECKEY can do ECDSA) */
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int (*can_do)( pk_type_t type );
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/** Verify signature */
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int (*verify_func)( void *ctx,
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const unsigned char *hash, const md_info_t *md_info,
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const unsigned char *sig, size_t sig_len );
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} pk_info_t;
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/**
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* \brief Public key container
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*/
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typedef struct
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{
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const pk_info_t * info; /**< Public key informations */
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pk_type_t type; /**< Public key type (temporary) */
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void * data; /**< Public key data */
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} pk_context;
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/**
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* \brief Initialize a pk_context (as NONE)
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*/
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void pk_init( pk_context *ctx );
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/**
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* \brief Free a pk_context
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*/
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void pk_free( pk_context *ctx );
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/**
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* \brief Set a pk_context to a given type
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*
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* \param ctx Context to initialize
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* \param type Type of key
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*
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* \note Once the type of a key has been set, it cannot be reset.
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* If you want to do so, you need to use pk_free() first.
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*
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* \return O on success,
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* POLARSSL_ERR_PK_MALLOC_FAILED on memory allocation fail,
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* POLARSSL_ERR_PK_TYPE_MISMATCH on attempts to reset type.
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*/
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int pk_set_type( pk_context *ctx, pk_type_t type );
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#ifdef __cplusplus
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}
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#endif
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#endif /* POLARSSL_PK_H */
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