| 1 | /** |
| 2 | * \file error.h |
| 3 | * |
| 4 | * \brief Error to string translation |
| 5 | */ |
| 6 | /* |
| 7 | * Copyright (C) 2006-2018, ARM Limited, All Rights Reserved |
| 8 | * SPDX-License-Identifier: GPL-2.0 |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License along |
| 21 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 22 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 23 | * |
| 24 | * This file is part of mbed TLS (https://tls.mbed.org) |
| 25 | */ |
| 26 | #ifndef MBEDTLS_ERROR_H |
| 27 | #define MBEDTLS_ERROR_H |
| 28 | |
| 29 | #include <stddef.h> |
| 30 | |
| 31 | /** |
| 32 | * Error code layout. |
| 33 | * |
| 34 | * Currently we try to keep all error codes within the negative space of 16 |
| 35 | * bits signed integers to support all platforms (-0x0001 - -0x7FFF). In |
| 36 | * addition we'd like to give two layers of information on the error if |
| 37 | * possible. |
| 38 | * |
| 39 | * For that purpose the error codes are segmented in the following manner: |
| 40 | * |
| 41 | * 16 bit error code bit-segmentation |
| 42 | * |
| 43 | * 1 bit - Unused (sign bit) |
| 44 | * 3 bits - High level module ID |
| 45 | * 5 bits - Module-dependent error code |
| 46 | * 7 bits - Low level module errors |
| 47 | * |
| 48 | * For historical reasons, low-level error codes are divided in even and odd, |
| 49 | * even codes were assigned first, and -1 is reserved for other errors. |
| 50 | * |
| 51 | * Low-level module errors (0x0002-0x007E, 0x0003-0x007F) |
| 52 | * |
| 53 | * Module Nr Codes assigned |
| 54 | * MPI 7 0x0002-0x0010 |
| 55 | * GCM 3 0x0012-0x0014 0x0013-0x0013 |
| 56 | * BLOWFISH 3 0x0016-0x0018 0x0017-0x0017 |
| 57 | * THREADING 3 0x001A-0x001E |
| 58 | * AES 5 0x0020-0x0022 0x0021-0x0025 |
| 59 | * CAMELLIA 3 0x0024-0x0026 0x0027-0x0027 |
| 60 | * XTEA 2 0x0028-0x0028 0x0029-0x0029 |
| 61 | * BASE64 2 0x002A-0x002C |
| 62 | * OID 1 0x002E-0x002E 0x000B-0x000B |
| 63 | * PADLOCK 1 0x0030-0x0030 |
| 64 | * DES 2 0x0032-0x0032 0x0033-0x0033 |
| 65 | * CTR_DBRG 4 0x0034-0x003A |
| 66 | * ENTROPY 3 0x003C-0x0040 0x003D-0x003F |
| 67 | * NET 13 0x0042-0x0052 0x0043-0x0049 |
| 68 | * ARIA 4 0x0058-0x005E |
| 69 | * ASN1 7 0x0060-0x006C |
| 70 | * CMAC 1 0x007A-0x007A |
| 71 | * PBKDF2 1 0x007C-0x007C |
| 72 | * HMAC_DRBG 4 0x0003-0x0009 |
| 73 | * CCM 3 0x000D-0x0011 |
| 74 | * ARC4 1 0x0019-0x0019 |
| 75 | * MD2 1 0x002B-0x002B |
| 76 | * MD4 1 0x002D-0x002D |
| 77 | * MD5 1 0x002F-0x002F |
| 78 | * RIPEMD160 1 0x0031-0x0031 |
| 79 | * SHA1 1 0x0035-0x0035 |
| 80 | * SHA256 1 0x0037-0x0037 |
| 81 | * SHA512 1 0x0039-0x0039 |
| 82 | * CHACHA20 3 0x0051-0x0055 |
| 83 | * POLY1305 3 0x0057-0x005B |
| 84 | * CHACHAPOLY 2 0x0054-0x0056 |
| 85 | * |
| 86 | * High-level module nr (3 bits - 0x0...-0x7...) |
| 87 | * Name ID Nr of Errors |
| 88 | * PEM 1 9 |
| 89 | * PKCS#12 1 4 (Started from top) |
| 90 | * X509 2 20 |
| 91 | * PKCS5 2 4 (Started from top) |
| 92 | * DHM 3 11 |
| 93 | * PK 3 15 (Started from top) |
| 94 | * RSA 4 11 |
| 95 | * ECP 4 9 (Started from top) |
| 96 | * MD 5 5 |
| 97 | * HKDF 5 1 (Started from top) |
| 98 | * CIPHER 6 8 |
| 99 | * SSL 6 22 (Started from top) |
| 100 | * SSL 7 31 |
| 101 | * |
| 102 | * Module dependent error code (5 bits 0x.00.-0x.F8.) |
| 103 | */ |
| 104 | |
| 105 | #ifdef __cplusplus |
| 106 | extern "C" { |
| 107 | #endif |
| 108 | |
| 109 | /** |
| 110 | * \brief Translate a mbed TLS error code into a string representation, |
| 111 | * Result is truncated if necessary and always includes a terminating |
| 112 | * null byte. |
| 113 | * |
| 114 | * \param errnum error code |
| 115 | * \param buffer buffer to place representation in |
| 116 | * \param buflen length of the buffer |
| 117 | */ |
| 118 | void mbedtls_strerror( int errnum, char *buffer, size_t buflen ); |
| 119 | |
| 120 | #ifdef __cplusplus |
| 121 | } |
| 122 | #endif |
| 123 | |
| 124 | #endif /* error.h */ |