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Diffstat (limited to 'network/wlan/WDI/COMMON/AES_OCB.h')
| -rw-r--r-- | network/wlan/WDI/COMMON/AES_OCB.h | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/network/wlan/WDI/COMMON/AES_OCB.h b/network/wlan/WDI/COMMON/AES_OCB.h deleted file mode 100644 index 242a272a..00000000 --- a/network/wlan/WDI/COMMON/AES_OCB.h +++ /dev/null @@ -1,150 +0,0 @@ -/* - * aes_ocb.h - * - * Author: Ted Krovetz ([email protected]) - * History: 1 April 2000 - first release (TK) - version 0.9 - * - * OCB-AES-n reference code based on NIST submission "OCB Mode" - * (dated 1 April 2000), submitted by Phillip Rogaway, with - * auxiliary submitters Mihir Bellare, John Black, and Ted Krovetz. - * - * This code is freely available, and may be modified as desired. - * Please retain the authorship and change history. - * Note that OCB mode itself is patent pending. - * - * This code is NOT optimized for speed; it is only - * designed to clarify the algorithm and to provide a point - * of comparison for other implementations. - * - * Limitiations: Assumes a 4-byte integer and pointers are - * 32-bit aligned. Acts on a byte string of less than 2^{36} - 16 bytes. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS - * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE - * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, - * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __OCB__H -#define __OCB__H - -#ifndef OCB_AES_KEY_BITLEN -#define OCB_AES_KEY_BITLEN 128 /* Must be 128, 192, 256 */ -#endif - -#if ((OCB_AES_KEY_BITLEN != 128) && \ - (OCB_AES_KEY_BITLEN != 192) && \ - (OCB_AES_KEY_BITLEN != 256)) -#error Bad -- OCB_AES_KEY_BITLEN must be one of 128, 192 or 256!! -#endif - - - -/* - * This implementation precomputes L(-1), L(0), L(1), L(PRE_COMP_BLOCKS), - * where L(0) = L and L(-1) = L/x and L(i) = x*L(i) for i>0. - * Normally, one would select PRE_COMP_BLOCKS to be a small number - * (like 0-6) and compute any larger L(i) values "on the fly", when they - * are needed. This saves space in _keystruct and needn't adversely - * impact running time. But in this implementation, to keep things as - * simple as possible, we compute all the L(i)-values we might ever see. - */ -#define PRE_COMP_BLOCKS 31 /* Must be between 0 and 31 */ - -#define OCB_AES_ROUNDS (OCB_AES_KEY_BITLEN / 32 + 6) - -#ifdef REMOVE_PACK -#pragma pack(1) -#endif - -typedef unsigned char rblock[16]; - -struct _keystruct { - u4Byte rek[4*(OCB_AES_ROUNDS+1)]; /* AES encryption key */ - u4Byte rdk[4*(OCB_AES_ROUNDS+1)]; /* AES decryption key */ - u4Byte tag_len; /* Sizeof tags to generate/validate */ - rblock L[PRE_COMP_BLOCKS+1]; /* Precomputed L(i) values, L[0] = L */ - rblock L_inv; /* Precomputed L/x value */ -}; - -/* Opaque forward declaration of key structure */ -typedef struct _keystruct keystruct; - - -#ifdef REMOVE_PACK -#pragma pack() -#endif - -/* - * "ocb_aes_init" optionally creates an ocb keystructure in memory - * and then initializes it using the supplied "enc_key". "tag_len" - * specifies the length of tags that will subsequently be generated - * and verified. If "key" is NULL a new structure will be created, but - * if "key" is non-NULL, then it is assumed that it points to a previously - * allocated structure, and that structure is initialized. "ocb_aes_init" - * returns a pointer to the initialized structure, or NULL if an error - * occurred. - */ -keystruct * /* Init'd keystruct or NULL */ -ocb_aes_init(void *enc_key, /* AES key */ - ULONG tag_len, /* Length of tags to be used */ - keystruct *key); /* OCB key structure. NULL means */ - /* Allocate/init new, non-NULL */ - /* means init existing structure */ - -/* "ocb_done deallocates a key structure and returns NULL */ -keystruct * -ocb_done(keystruct *key); - -/* - * "ocb_aes_encrypt takes a key structure, four buffers and a length - * parameter as input. "pt_len" bytes that are pointed to by "pt" are - * encrypted and written to the buffer pointed to by "ct". A tag of length - * "tag_len" (set in ocb_aes_init) is written to the "tag" buffer. "nonce" - * must be a 16-byte buffer which changes for each new message being - * encrypted. "ocb_aes_encrypt" always returns a value of 1. - */ -void -ocb_aes_encrypt(keystruct *key, /* Initialized key struct */ - void *nonce, /* 16-byte nonce */ - void *pt, /* Buffer for (incoming) plaintext */ - ULONG pt_len, /* Byte length of pt */ - void *ct, /* Buffer for (outgoing) ciphertext */ - void *tag); /* Buffer for generated tag */ - - -/* - * "ocb_aes_decrypt takes a key structure, four buffers and a length - * parameter as input. "ct_len" bytes that are pointed to by "ct" are - * decrypted and written to the buffer pointed to by "pt". A tag of length - * "tag_len" (set in ocb_aes_init) is read from the "tag" buffer. "nonce" - * must be a 16-byte buffer which changes for each new message being - * encrypted. "ocb_aes_decrypt" returns 0 if the supplied - * tag is not correct for the supplied message, otherwise 1 is returned if - * the tag is correct. - */ -int /* Returns 0 iff tag is incorrect */ -ocb_aes_decrypt(keystruct *key, /* Initialized key struct */ - void *nonce, /* 16-byte nonce */ - void *ct, /* Buffer for (incoming) ciphertext */ - ULONG ct_len, /* Byte length of ct */ - void *pt, /* Buffer for (outgoing) plaintext */ - void *tag); /* Tag to be verified */ - - - - -void -pmac_aes (keystruct *key, /* Initialized key struct */ - void *in, /* Buffer for (incoming) message */ - ULONG in_len, /* Byte length of message */ - void *tag); /* 16-byte buffer for generated tag */ - -#endif /* __OCB__H */ |