4 * \brief Error to string translation
7 * Copyright (C) 2006-2018, ARM Limited, All Rights Reserved
8 * SPDX-License-Identifier: Apache-2.0
10 * Licensed under the Apache License, Version 2.0 (the "License"); you may
11 * not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
14 * http://www.apache.org/licenses/LICENSE-2.0
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
18 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
22 * This file is part of mbed TLS (https://tls.mbed.org)
24 #ifndef MBEDTLS_ERROR_H
25 #define MBEDTLS_ERROR_H
27 #if !defined(MBEDTLS_CONFIG_FILE)
30 #include MBEDTLS_CONFIG_FILE
38 * Currently we try to keep all error codes within the negative space of 16
39 * bits signed integers to support all platforms (-0x0001 - -0x7FFF). In
40 * addition we'd like to give two layers of information on the error if
43 * For that purpose the error codes are segmented in the following manner:
45 * 16 bit error code bit-segmentation
47 * 1 bit - Unused (sign bit)
48 * 3 bits - High level module ID
49 * 5 bits - Module-dependent error code
50 * 7 bits - Low level module errors
52 * For historical reasons, low-level error codes are divided in even and odd,
53 * even codes were assigned first, and -1 is reserved for other errors.
55 * Low-level module errors (0x0002-0x007E, 0x0003-0x007F)
57 * Module Nr Codes assigned
59 * GCM 3 0x0012-0x0014 0x0013-0x0013
60 * BLOWFISH 3 0x0016-0x0018 0x0017-0x0017
61 * THREADING 3 0x001A-0x001E
62 * AES 5 0x0020-0x0022 0x0021-0x0025
63 * CAMELLIA 3 0x0024-0x0026 0x0027-0x0027
64 * XTEA 2 0x0028-0x0028 0x0029-0x0029
65 * BASE64 2 0x002A-0x002C
66 * OID 1 0x002E-0x002E 0x000B-0x000B
67 * PADLOCK 1 0x0030-0x0030
68 * DES 2 0x0032-0x0032 0x0033-0x0033
69 * CTR_DBRG 4 0x0034-0x003A
70 * ENTROPY 3 0x003C-0x0040 0x003D-0x003F
71 * NET 13 0x0042-0x0052 0x0043-0x0049
72 * ARIA 4 0x0058-0x005E
73 * ASN1 7 0x0060-0x006C
74 * CMAC 1 0x007A-0x007A
75 * PBKDF2 1 0x007C-0x007C
76 * HMAC_DRBG 4 0x0003-0x0009
78 * ARC4 1 0x0019-0x0019
82 * RIPEMD160 1 0x0031-0x0031
83 * SHA1 1 0x0035-0x0035 0x0073-0x0073
84 * SHA256 1 0x0037-0x0037 0x0074-0x0074
85 * SHA512 1 0x0039-0x0039 0x0075-0x0075
86 * CHACHA20 3 0x0051-0x0055
87 * POLY1305 3 0x0057-0x005B
88 * CHACHAPOLY 2 0x0054-0x0056
89 * PLATFORM 1 0x0070-0x0072
91 * High-level module nr (3 bits - 0x0...-0x7...)
92 * Name ID Nr of Errors
94 * PKCS#12 1 4 (Started from top)
96 * PKCS5 2 4 (Started from top)
98 * PK 3 15 (Started from top)
100 * ECP 4 10 (Started from top)
102 * HKDF 5 1 (Started from top)
103 * CIPHER 6 8 (Started from 0x6080)
104 * SSL 6 24 (Started from top, plus 0x6000)
107 * Module dependent error code (5 bits 0x.00.-0x.F8.)
115 * \brief Translate a mbed TLS error code into a string representation,
116 * Result is truncated if necessary and always includes a terminating
119 * \param errnum error code
120 * \param buffer buffer to place representation in
121 * \param buflen length of the buffer
123 void mbedtls_strerror( int errnum, char *buffer, size_t buflen );