lcx_common.h

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/*******************************************************************************
 *   Ledger Nano S - Secure firmware
 *   (c) 2022 Ledger
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 ********************************************************************************/
 
#ifndef LCX_COMMON_H
#define LCX_COMMON_H
 
#include <stdint.h>
#include <stddef.h>
 
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define ARCH_LITTLE_ENDIAN
#else
#define ARCH_BIG_ENDIAN
#endif
 
#if defined(__UINT64_TYPE__) && !defined(NATIVE_64BITS)
#define NATIVE_64BITS
#endif
 
#ifndef NATIVE_64BITS  // NO 64BITS
struct uint64_s {
#ifdef ARCH_LITTLE_ENDIAN
    uint32_t l;  
    uint32_t h;  
#else
    uint32_t h;
    uint32_t l;
#endif
};
typedef struct uint64_s uint64bits_t;
#else
typedef uint64_t uint64bits_t;
#endif
 
typedef struct {
    const uint8_t *iov_base;
    size_t         iov_len;
} cx_iovec_t;
 
// clang-format off
// clang-format on
#define CX_FLAG
 
#define CX_LAST (1 << 0)
 
#define CX_SIG_MODE (1 << 1)
 
#define CX_MASK_SIGCRYPT (3 << 1)
#define CX_ENCRYPT       (2 << 1)
#define CX_DECRYPT       (0 << 1)
#define CX_SIGN          (CX_SIG_MODE | CX_ENCRYPT)
#define CX_VERIFY        (CX_SIG_MODE | CX_DECRYPT)
 
#define CX_MASK_PAD       (7 << 3)
#define CX_PAD_NONE       (0 << 3)
#define CX_PAD_ISO9797M1  (1 << 3)
#define CX_PAD_ISO9797M2  (2 << 3)
#define CX_PAD_PKCS1_1o5  (3 << 3)
#define CX_PAD_PKCS1_PSS  (4 << 3)
#define CX_PAD_PKCS1_OAEP (5 << 3)
 
#define CX_MASK_CHAIN (7 << 6)
#define CX_CHAIN_ECB  (0 << 6)
#define CX_CHAIN_CBC  (1 << 6)
#define CX_CHAIN_CTR  (2 << 6)
#define CX_CHAIN_CFB  (3 << 6)
#define CX_CHAIN_OFB  (4 << 6)
 
#define CX_MASK_ECC_VARIANT (7 << 6)
#define CX_NO_CANONICAL     (1 << 6)
 
#define CX_MASK_RND     (7 << 9)
#define CX_RND_PRNG     (1 << 9)
#define CX_RND_TRNG     (2 << 9)
#define CX_RND_RFC6979  (3 << 9)
#define CX_RND_PROVIDED (4 << 9)
 
#define CX_MASK_EC               (7 << 12)
#define CX_ECSCHNORR_BIP0340     (0 << 12)
#define CX_ECDH_POINT            (1 << 12)
#define CX_ECDH_X                (2 << 12)
#define CX_ECSCHNORR_ISO14888_XY (3 << 12)
#define CX_ECSCHNORR_ISO14888_X  (4 << 12)
#define CX_ECSCHNORR_BSI03111    (5 << 12)
#define CX_ECSCHNORR_LIBSECP     (6 << 12)
#define CX_ECSCHNORR_Z           (7 << 12)
 
#define CX_NO_REINIT (1 << 15)
 
#endif