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Diffstat (limited to '')
| -rw-r--r-- | wsutil/eax.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/wsutil/eax.h b/wsutil/eax.h new file mode 100644 index 0000000..ccf4dc6 --- /dev/null +++ b/wsutil/eax.h @@ -0,0 +1,46 @@ +/** @file + * Encryption and decryption routines implementing the EAX' encryption mode + * Copyright 2010, Edward J. Beroset, edward.j.beroset@us.elster.com + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef _EAX_H +#define _EAX_H + +#include <wireshark.h> + +typedef struct tagMAC_T +{ + uint8_t Mac[4]; +} MAC_T; + +#define EAX_MODE_CLEARTEXT_AUTH 1 +#define EAX_MODE_CIPHERTEXT_AUTH 2 + +#define EAX_SIZEOF_KEY 16 + +/*! + Decrypts cleartext data using EAX' mode (see ANSI Standard C12.22-2008). + + @param[in] pN pointer to cleartext (canonified form) + @param[in] pK pointer to secret key + @param[in,out] pC pointer to ciphertext + @param[in] SizeN byte length of cleartext (pN) buffer + @param[in] SizeK byte length of secret key (pK) + @param[in] SizeC byte length of ciphertext (pC) buffer + @param[in] pMac four-byte Message Authentication Code + @param[in] Mode EAX_MODE_CLEARTEXT_AUTH or EAX_MODE_CIPHERTEXT_AUTH + @return true if message has been authenticated; false if not + authenticated, invalid Mode or error + */ +WS_DLL_PUBLIC +bool Eax_Decrypt(uint8_t *pN, uint8_t *pK, uint8_t *pC, + uint32_t SizeN, uint32_t SizeK, uint32_t SizeC, MAC_T *pMac, + uint8_t Mode); + +#endif |