/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _AES_IMPL_H #define _AES_IMPL_H /* * Common definitions used by AES. */ #ifdef __cplusplus extern "C" { #endif #include #include /* Similar to sysmacros.h IS_P2ALIGNED, but checks two pointers: */ #define IS_P2ALIGNED2(v, w, a) \ ((((uintptr_t)(v) | (uintptr_t)(w)) & ((uintptr_t)(a) - 1)) == 0) #define AES_BLOCK_LEN 16 /* bytes */ /* Round constant length, in number of 32-bit elements: */ #define RC_LENGTH (5 * ((AES_BLOCK_LEN) / 4 - 2)) #define AES_COPY_BLOCK(src, dst) \ (dst)[0] = (src)[0]; \ (dst)[1] = (src)[1]; \ (dst)[2] = (src)[2]; \ (dst)[3] = (src)[3]; \ (dst)[4] = (src)[4]; \ (dst)[5] = (src)[5]; \ (dst)[6] = (src)[6]; \ (dst)[7] = (src)[7]; \ (dst)[8] = (src)[8]; \ (dst)[9] = (src)[9]; \ (dst)[10] = (src)[10]; \ (dst)[11] = (src)[11]; \ (dst)[12] = (src)[12]; \ (dst)[13] = (src)[13]; \ (dst)[14] = (src)[14]; \ (dst)[15] = (src)[15] #define AES_XOR_BLOCK(src, dst) \ (dst)[0] ^= (src)[0]; \ (dst)[1] ^= (src)[1]; \ (dst)[2] ^= (src)[2]; \ (dst)[3] ^= (src)[3]; \ (dst)[4] ^= (src)[4]; \ (dst)[5] ^= (src)[5]; \ (dst)[6] ^= (src)[6]; \ (dst)[7] ^= (src)[7]; \ (dst)[8] ^= (src)[8]; \ (dst)[9] ^= (src)[9]; \ (dst)[10] ^= (src)[10]; \ (dst)[11] ^= (src)[11]; \ (dst)[12] ^= (src)[12]; \ (dst)[13] ^= (src)[13]; \ (dst)[14] ^= (src)[14]; \ (dst)[15] ^= (src)[15] /* AES key size definitions */ #define AES_MINBITS 128 #define AES_MINBYTES ((AES_MINBITS) >> 3) #define AES_MAXBITS 256 #define AES_MAXBYTES ((AES_MAXBITS) >> 3) #define AES_MIN_KEY_BYTES ((AES_MINBITS) >> 3) #define AES_MAX_KEY_BYTES ((AES_MAXBITS) >> 3) #define AES_192_KEY_BYTES 24 #define AES_IV_LEN 16 /* AES key schedule may be implemented with 32- or 64-bit elements: */ #define AES_32BIT_KS 32 #define AES_64BIT_KS 64 #define MAX_AES_NR 14 /* Maximum number of rounds */ #define MAX_AES_NB 4 /* Number of columns comprising a state */ typedef union { #ifdef sun4u uint64_t ks64[((MAX_AES_NR) + 1) * (MAX_AES_NB)]; #endif uint32_t ks32[((MAX_AES_NR) + 1) * (MAX_AES_NB)]; } aes_ks_t; typedef struct aes_impl_ops aes_impl_ops_t; typedef struct aes_key aes_key_t; struct aes_key { aes_ks_t encr_ks; /* encryption key schedule */ aes_ks_t decr_ks; /* decryption key schedule */ #ifdef __amd64 long double align128; /* Align fields above for Intel AES-NI */ #endif /* __amd64 */ const aes_impl_ops_t *ops; /* ops associated with this schedule */ int nr; /* number of rounds (10, 12, or 14) */ int type; /* key schedule size (32 or 64 bits) */ }; /* * Core AES functions. * ks and keysched are pointers to aes_key_t. * They are declared void* as they are intended to be opaque types. * Use function aes_alloc_keysched() to allocate memory for ks and keysched. */ extern void *aes_alloc_keysched(size_t *size, int kmflag); extern void aes_init_keysched(const uint8_t *cipherKey, uint_t keyBits, void *keysched); extern int aes_encrypt_block(const void *ks, const uint8_t *pt, uint8_t *ct); extern int aes_decrypt_block(const void *ks, const uint8_t *ct, uint8_t *pt); /* * AES mode functions. * The first 2 functions operate on 16-byte AES blocks. */ extern void aes_copy_block(uint8_t *in, uint8_t *out); extern void aes_xor_block(uint8_t *data, uint8_t *dst); /* Note: ctx is a pointer to aes_ctx_t defined in modes.h */ extern int aes_encrypt_contiguous_blocks(void *ctx, char *data, size_t length, crypto_data_t *out); extern int aes_decrypt_contiguous_blocks(void *ctx, char *data, size_t length, crypto_data_t *out); /* * The following definitions and declarations are only used by AES FIPS POST */ #ifdef _AES_IMPL typedef enum aes_mech_type { AES_ECB_MECH_INFO_TYPE, /* SUN_CKM_AES_ECB */ AES_CBC_MECH_INFO_TYPE, /* SUN_CKM_AES_CBC */ AES_CBC_PAD_MECH_INFO_TYPE, /* SUN_CKM_AES_CBC_PAD */ AES_CTR_MECH_INFO_TYPE, /* SUN_CKM_AES_CTR */ AES_CCM_MECH_INFO_TYPE, /* SUN_CKM_AES_CCM */ AES_GCM_MECH_INFO_TYPE, /* SUN_CKM_AES_GCM */ AES_GMAC_MECH_INFO_TYPE /* SUN_CKM_AES_GMAC */ } aes_mech_type_t; #endif /* _AES_IMPL */ /* * Methods used to define aes implementation * * @aes_gen_f Key generation * @aes_enc_f Function encrypts one block * @aes_dec_f Function decrypts one block * @aes_will_work_f Function tests whether method will function */ typedef void (*aes_generate_f)(aes_key_t *, const uint32_t *, int); typedef void (*aes_encrypt_f)(const uint32_t[], int, const uint32_t[4], uint32_t[4]); typedef void (*aes_decrypt_f)(const uint32_t[], int, const uint32_t[4], uint32_t[4]); typedef boolean_t (*aes_will_work_f)(void); #define AES_IMPL_NAME_MAX (16) struct aes_impl_ops { aes_generate_f generate; aes_encrypt_f encrypt; aes_decrypt_f decrypt; aes_will_work_f is_supported; boolean_t needs_byteswap; char name[AES_IMPL_NAME_MAX]; }; extern const aes_impl_ops_t aes_generic_impl; #if defined(__x86_64) extern const aes_impl_ops_t aes_x86_64_impl; #endif #if defined(__x86_64) && defined(HAVE_AES) extern const aes_impl_ops_t aes_aesni_impl; #endif /* * Initializes fastest implementation */ void aes_impl_init(void *arg); /* * Returns optimal allowed AES implementation */ const struct aes_impl_ops *aes_impl_get_ops(void); #ifdef __cplusplus } #endif #endif /* _AES_IMPL_H */