Doug Anson
mbed TLS library
Dependents: HTTPClient-SSL WS_SERVER
error.h File Reference
Error to string translation. More...
Go to the source code of this file.
Functions | |
| void | polarssl_strerror (int errnum, char *buffer, size_t buflen) |
| Error code layout. | |
Detailed Description
Error to string translation.
Copyright (C) 2006-2013, ARM Limited, All Rights Reserved
This file is part of mbed TLS (https://tls.mbed.org)
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Definition in file error.h.
Function Documentation
| void polarssl_strerror | ( | int | errnum, |
| char * | buffer, | ||
| size_t | buflen | ||
| ) |
Error code layout.
Currently we try to keep all error codes within the negative space of 16 bytes signed integers to support all platforms (-0x0000 - -0x8000). In addition we'd like to give two layers of information on the error if possible.
For that purpose the error codes are segmented in the following manner:
16 bit error code bit-segmentation
1 bit - Sign bit 3 bits - High level module ID 5 bits - Module-dependent error code 7 bits - Low level module errors
For historical reasons, low-level error codes are divided in even and odd, even codes were assigned first, and -1 is reserved for other errors.
Low-level module errors (0x0002-0x007E, 0x0003-0x007F)
Module Nr Codes assigned MPI 7 0x0002-0x0010 GCM 2 0x0012-0x0014 BLOWFISH 2 0x0016-0x0018 THREADING 3 0x001A-0x001E AES 2 0x0020-0x0022 CAMELLIA 2 0x0024-0x0026 XTEA 1 0x0028-0x0028 BASE64 2 0x002A-0x002C OID 1 0x002E-0x002E 0x000B-0x000B PADLOCK 1 0x0030-0x0030 DES 1 0x0032-0x0032 CTR_DBRG 4 0x0034-0x003A ENTROPY 3 0x003C-0x0040 NET 11 0x0042-0x0056 ENTROPY 1 0x0058-0x0058 ASN1 7 0x0060-0x006C MD2 1 0x0070-0x0070 MD4 1 0x0072-0x0072 MD5 1 0x0074-0x0074 SHA1 1 0x0076-0x0076 SHA256 1 0x0078-0x0078 SHA512 1 0x007A-0x007A PBKDF2 1 0x007C-0x007C RIPEMD160 1 0x007E-0x007E HMAC_DRBG 4 0x0003-0x0009 CCM 2 0x000D-0x000F
High-level module nr (3 bits - 0x0...-0x7...) Name ID Nr of Errors PEM 1 9 PKCS#12 1 4 (Started from top) X509 2 18 PK 2 14 (Started from top, plus 0x2000) DHM 3 9 PKCS5 3 4 (Started from top) RSA 4 9 ECP 4 8 (Started from top) MD 5 4 CIPHER 6 6 SSL 6 11 (Started from top) SSL 7 31
Module dependent error code (5 bits 0x.00.-0x.F8.) Translate a mbed TLS error code into a string representation, Result is truncated if necessary and always includes a terminating null byte.
- Parameters:
-
errnum error code buffer buffer to place representation in buflen length of the buffer
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