4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 #ifndef _COMMON_CRYPTO_MODES_H
27 #define _COMMON_CRYPTO_MODES_H
33 #include <sys/zfs_context.h>
34 #include <sys/crypto/common.h>
35 #include <sys/crypto/impl.h>
37 #define ECB_MODE 0x00000002
38 #define CBC_MODE 0x00000004
39 #define CTR_MODE 0x00000008
40 #define CCM_MODE 0x00000010
41 #define GCM_MODE 0x00000020
42 #define GMAC_MODE 0x00000040
45 * cc_keysched: Pointer to key schedule.
47 * cc_keysched_len: Length of the key schedule.
49 * cc_remainder: This is for residual data, i.e. data that can't
50 * be processed because there are too few bytes.
51 * Must wait until more data arrives.
53 * cc_remainder_len: Number of bytes in cc_remainder.
55 * cc_iv: Scratch buffer that sometimes contains the IV.
57 * cc_lastp: Pointer to previous block of ciphertext.
59 * cc_copy_to: Pointer to where encrypted residual data needs
62 * cc_flags: PROVIDER_OWNS_KEY_SCHEDULE
63 * When a context is freed, it is necessary
64 * to know whether the key schedule was allocated
65 * by the caller, or internally, e.g. an init routine.
66 * If allocated by the latter, then it needs to be freed.
68 * ECB_MODE, CBC_MODE, CTR_MODE, or CCM_MODE
72 size_t cc_keysched_len;
74 uint64_t cc_remainder[2];
75 size_t cc_remainder_len;
81 typedef struct common_ctx common_ctx_t;
83 typedef struct ecb_ctx {
84 struct common_ctx ecb_common;
85 uint64_t ecb_lastblock[2];
88 #define ecb_keysched ecb_common.cc_keysched
89 #define ecb_keysched_len ecb_common.cc_keysched_len
90 #define ecb_iv ecb_common.cc_iv
91 #define ecb_remainder ecb_common.cc_remainder
92 #define ecb_remainder_len ecb_common.cc_remainder_len
93 #define ecb_lastp ecb_common.cc_lastp
94 #define ecb_copy_to ecb_common.cc_copy_to
95 #define ecb_flags ecb_common.cc_flags
97 typedef struct cbc_ctx {
98 struct common_ctx cbc_common;
99 uint64_t cbc_lastblock[2];
102 #define cbc_keysched cbc_common.cc_keysched
103 #define cbc_keysched_len cbc_common.cc_keysched_len
104 #define cbc_iv cbc_common.cc_iv
105 #define cbc_remainder cbc_common.cc_remainder
106 #define cbc_remainder_len cbc_common.cc_remainder_len
107 #define cbc_lastp cbc_common.cc_lastp
108 #define cbc_copy_to cbc_common.cc_copy_to
109 #define cbc_flags cbc_common.cc_flags
112 * ctr_lower_mask Bit-mask for lower 8 bytes of counter block.
113 * ctr_upper_mask Bit-mask for upper 8 bytes of counter block.
115 typedef struct ctr_ctx {
116 struct common_ctx ctr_common;
117 uint64_t ctr_lower_mask;
118 uint64_t ctr_upper_mask;
123 * ctr_cb Counter block.
125 #define ctr_keysched ctr_common.cc_keysched
126 #define ctr_keysched_len ctr_common.cc_keysched_len
127 #define ctr_cb ctr_common.cc_iv
128 #define ctr_remainder ctr_common.cc_remainder
129 #define ctr_remainder_len ctr_common.cc_remainder_len
130 #define ctr_lastp ctr_common.cc_lastp
131 #define ctr_copy_to ctr_common.cc_copy_to
132 #define ctr_flags ctr_common.cc_flags
136 * ccm_mac_len: Stores length of the MAC in CCM mode.
137 * ccm_mac_buf: Stores the intermediate value for MAC in CCM encrypt.
138 * In CCM decrypt, stores the input MAC value.
139 * ccm_data_len: Length of the plaintext for CCM mode encrypt, or
140 * length of the ciphertext for CCM mode decrypt.
141 * ccm_processed_data_len:
142 * Length of processed plaintext in CCM mode encrypt,
143 * or length of processed ciphertext for CCM mode decrypt.
144 * ccm_processed_mac_len:
145 * Length of MAC data accumulated in CCM mode decrypt.
147 * ccm_pt_buf: Only used in CCM mode decrypt. It stores the
148 * decrypted plaintext to be returned when
149 * MAC verification succeeds in decrypt_final.
150 * Memory for this should be allocated in the AES module.
153 typedef struct ccm_ctx {
154 struct common_ctx ccm_common;
157 uint64_t ccm_mac_buf[2];
159 size_t ccm_processed_data_len;
160 size_t ccm_processed_mac_len;
162 uint64_t ccm_mac_input_buf[2];
163 uint64_t ccm_counter_mask;
166 #define ccm_keysched ccm_common.cc_keysched
167 #define ccm_keysched_len ccm_common.cc_keysched_len
168 #define ccm_cb ccm_common.cc_iv
169 #define ccm_remainder ccm_common.cc_remainder
170 #define ccm_remainder_len ccm_common.cc_remainder_len
171 #define ccm_lastp ccm_common.cc_lastp
172 #define ccm_copy_to ccm_common.cc_copy_to
173 #define ccm_flags ccm_common.cc_flags
176 * gcm_tag_len: Length of authentication tag.
178 * gcm_ghash: Stores output from the GHASH function.
180 * gcm_processed_data_len:
181 * Length of processed plaintext (encrypt) or
182 * length of processed ciphertext (decrypt).
184 * gcm_pt_buf: Stores the decrypted plaintext returned by
185 * decrypt_final when the computed authentication
186 * tag matches the user supplied tag.
188 * gcm_pt_buf_len: Length of the plaintext buffer.
192 * gcm_J0: Pre-counter block generated from the IV.
194 * gcm_len_a_len_c: 64-bit representations of the bit lengths of
195 * AAD and ciphertext.
197 * gcm_kmflag: Current value of kmflag. Used only for allocating
198 * the plaintext buffer during decryption.
200 typedef struct gcm_ctx {
201 struct common_ctx gcm_common;
203 size_t gcm_processed_data_len;
204 size_t gcm_pt_buf_len;
206 uint64_t gcm_ghash[2];
209 uint64_t gcm_len_a_len_c[2];
214 #define gcm_keysched gcm_common.cc_keysched
215 #define gcm_keysched_len gcm_common.cc_keysched_len
216 #define gcm_cb gcm_common.cc_iv
217 #define gcm_remainder gcm_common.cc_remainder
218 #define gcm_remainder_len gcm_common.cc_remainder_len
219 #define gcm_lastp gcm_common.cc_lastp
220 #define gcm_copy_to gcm_common.cc_copy_to
221 #define gcm_flags gcm_common.cc_flags
223 #define AES_GMAC_IV_LEN 12
224 #define AES_GMAC_TAG_BITS 128
226 typedef struct aes_ctx {
236 #define ac_flags acu.acu_ecb.ecb_common.cc_flags
237 #define ac_remainder_len acu.acu_ecb.ecb_common.cc_remainder_len
238 #define ac_keysched acu.acu_ecb.ecb_common.cc_keysched
239 #define ac_keysched_len acu.acu_ecb.ecb_common.cc_keysched_len
240 #define ac_iv acu.acu_ecb.ecb_common.cc_iv
241 #define ac_lastp acu.acu_ecb.ecb_common.cc_lastp
242 #define ac_pt_buf acu.acu_ccm.ccm_pt_buf
243 #define ac_mac_len acu.acu_ccm.ccm_mac_len
244 #define ac_data_len acu.acu_ccm.ccm_data_len
245 #define ac_processed_mac_len acu.acu_ccm.ccm_processed_mac_len
246 #define ac_processed_data_len acu.acu_ccm.ccm_processed_data_len
247 #define ac_tag_len acu.acu_gcm.gcm_tag_len
249 typedef struct blowfish_ctx {
256 #define bc_flags bcu.bcu_ecb.ecb_common.cc_flags
257 #define bc_remainder_len bcu.bcu_ecb.ecb_common.cc_remainder_len
258 #define bc_keysched bcu.bcu_ecb.ecb_common.cc_keysched
259 #define bc_keysched_len bcu.bcu_ecb.ecb_common.cc_keysched_len
260 #define bc_iv bcu.bcu_ecb.ecb_common.cc_iv
261 #define bc_lastp bcu.bcu_ecb.ecb_common.cc_lastp
263 typedef struct des_ctx {
270 #define dc_flags dcu.dcu_ecb.ecb_common.cc_flags
271 #define dc_remainder_len dcu.dcu_ecb.ecb_common.cc_remainder_len
272 #define dc_keysched dcu.dcu_ecb.ecb_common.cc_keysched
273 #define dc_keysched_len dcu.dcu_ecb.ecb_common.cc_keysched_len
274 #define dc_iv dcu.dcu_ecb.ecb_common.cc_iv
275 #define dc_lastp dcu.dcu_ecb.ecb_common.cc_lastp
277 extern int ecb_cipher_contiguous_blocks(ecb_ctx_t *, char *, size_t,
278 crypto_data_t *, size_t, int (*cipher)(const void *, const uint8_t *,
281 extern int cbc_encrypt_contiguous_blocks(cbc_ctx_t *, char *, size_t,
282 crypto_data_t *, size_t,
283 int (*encrypt)(const void *, const uint8_t *, uint8_t *),
284 void (*copy_block)(uint8_t *, uint8_t *),
285 void (*xor_block)(uint8_t *, uint8_t *));
287 extern int cbc_decrypt_contiguous_blocks(cbc_ctx_t *, char *, size_t,
288 crypto_data_t *, size_t,
289 int (*decrypt)(const void *, const uint8_t *, uint8_t *),
290 void (*copy_block)(uint8_t *, uint8_t *),
291 void (*xor_block)(uint8_t *, uint8_t *));
293 extern int ctr_mode_contiguous_blocks(ctr_ctx_t *, char *, size_t,
294 crypto_data_t *, size_t,
295 int (*cipher)(const void *, const uint8_t *, uint8_t *),
296 void (*xor_block)(uint8_t *, uint8_t *));
298 extern int ccm_mode_encrypt_contiguous_blocks(ccm_ctx_t *, char *, size_t,
299 crypto_data_t *, size_t,
300 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
301 void (*copy_block)(uint8_t *, uint8_t *),
302 void (*xor_block)(uint8_t *, uint8_t *));
304 extern int ccm_mode_decrypt_contiguous_blocks(ccm_ctx_t *, char *, size_t,
305 crypto_data_t *, size_t,
306 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
307 void (*copy_block)(uint8_t *, uint8_t *),
308 void (*xor_block)(uint8_t *, uint8_t *));
310 extern int gcm_mode_encrypt_contiguous_blocks(gcm_ctx_t *, char *, size_t,
311 crypto_data_t *, size_t,
312 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
313 void (*copy_block)(uint8_t *, uint8_t *),
314 void (*xor_block)(uint8_t *, uint8_t *));
316 extern int gcm_mode_decrypt_contiguous_blocks(gcm_ctx_t *, char *, size_t,
317 crypto_data_t *, size_t,
318 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
319 void (*copy_block)(uint8_t *, uint8_t *),
320 void (*xor_block)(uint8_t *, uint8_t *));
322 int ccm_encrypt_final(ccm_ctx_t *, crypto_data_t *, size_t,
323 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
324 void (*xor_block)(uint8_t *, uint8_t *));
326 int gcm_encrypt_final(gcm_ctx_t *, crypto_data_t *, size_t,
327 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
328 void (*copy_block)(uint8_t *, uint8_t *),
329 void (*xor_block)(uint8_t *, uint8_t *));
331 extern int ccm_decrypt_final(ccm_ctx_t *, crypto_data_t *, size_t,
332 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
333 void (*copy_block)(uint8_t *, uint8_t *),
334 void (*xor_block)(uint8_t *, uint8_t *));
336 extern int gcm_decrypt_final(gcm_ctx_t *, crypto_data_t *, size_t,
337 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
338 void (*xor_block)(uint8_t *, uint8_t *));
340 extern int ctr_mode_final(ctr_ctx_t *, crypto_data_t *,
341 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *));
343 extern int cbc_init_ctx(cbc_ctx_t *, char *, size_t, size_t,
344 void (*copy_block)(uint8_t *, uint64_t *));
346 extern int ctr_init_ctx(ctr_ctx_t *, ulong_t, uint8_t *,
347 void (*copy_block)(uint8_t *, uint8_t *));
349 extern int ccm_init_ctx(ccm_ctx_t *, char *, int, boolean_t, size_t,
350 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
351 void (*xor_block)(uint8_t *, uint8_t *));
353 extern int gcm_init_ctx(gcm_ctx_t *, char *, size_t,
354 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
355 void (*copy_block)(uint8_t *, uint8_t *),
356 void (*xor_block)(uint8_t *, uint8_t *));
358 extern int gmac_init_ctx(gcm_ctx_t *, char *, size_t,
359 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *),
360 void (*copy_block)(uint8_t *, uint8_t *),
361 void (*xor_block)(uint8_t *, uint8_t *));
363 extern void calculate_ccm_mac(ccm_ctx_t *, uint8_t *,
364 int (*encrypt_block)(const void *, const uint8_t *, uint8_t *));
366 extern void gcm_mul(uint64_t *, uint64_t *, uint64_t *);
368 extern void crypto_init_ptrs(crypto_data_t *, void **, offset_t *);
369 extern void crypto_get_ptrs(crypto_data_t *, void **, offset_t *,
370 uint8_t **, size_t *, uint8_t **, size_t);
372 extern void *ecb_alloc_ctx(int);
373 extern void *cbc_alloc_ctx(int);
374 extern void *ctr_alloc_ctx(int);
375 extern void *ccm_alloc_ctx(int);
376 extern void *gcm_alloc_ctx(int);
377 extern void *gmac_alloc_ctx(int);
378 extern void crypto_free_mode_ctx(void *);
379 extern void gcm_set_kmflag(gcm_ctx_t *, int);
385 #endif /* _COMMON_CRYPTO_MODES_H */