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33 #ifndef _RTE_CRYPTO_SYM_H_
34 #define _RTE_CRYPTO_SYM_H_
37 * @file rte_crypto_sym.h
39 * RTE Definitions for Symmetric Cryptography
41 * Defines symmetric cipher and authentication algorithms and modes, as well
42 * as supported symmetric crypto operation combinations.
52 #include <rte_memory.h>
53 #include <rte_mempool.h>
54 #include <rte_common.h>
57 /** Symmetric Cipher Algorithms */
58 enum rte_crypto_cipher_algorithm {
59 RTE_CRYPTO_CIPHER_NULL = 1,
60 /**< NULL cipher algorithm. No mode applies to the NULL algorithm. */
62 RTE_CRYPTO_CIPHER_3DES_CBC,
63 /**< Triple DES algorithm in CBC mode */
64 RTE_CRYPTO_CIPHER_3DES_CTR,
65 /**< Triple DES algorithm in CTR mode */
66 RTE_CRYPTO_CIPHER_3DES_ECB,
67 /**< Triple DES algorithm in ECB mode */
69 RTE_CRYPTO_CIPHER_AES_CBC,
70 /**< AES algorithm in CBC mode */
71 RTE_CRYPTO_CIPHER_AES_CCM,
72 /**< AES algorithm in CCM mode. When this cipher algorithm is used the
73 * *RTE_CRYPTO_AUTH_AES_CCM* element of the
74 * *rte_crypto_hash_algorithm* enum MUST be used to set up the related
75 * *rte_crypto_auth_xform* structure in the session context or in
76 * the op_params of the crypto operation structure in the case of a
77 * session-less crypto operation
79 RTE_CRYPTO_CIPHER_AES_CTR,
80 /**< AES algorithm in Counter mode */
81 RTE_CRYPTO_CIPHER_AES_ECB,
82 /**< AES algorithm in ECB mode */
83 RTE_CRYPTO_CIPHER_AES_F8,
84 /**< AES algorithm in F8 mode */
85 RTE_CRYPTO_CIPHER_AES_GCM,
86 /**< AES algorithm in GCM mode. When this cipher algorithm is used the
87 * *RTE_CRYPTO_AUTH_AES_GCM* or *RTE_CRYPTO_AUTH_AES_GMAC* element
88 * of the *rte_crypto_auth_algorithm* enum MUST be used to set up
89 * the related *rte_crypto_auth_setup_data* structure in the session
90 * context or in the op_params of the crypto operation structure
91 * in the case of a session-less crypto operation.
93 RTE_CRYPTO_CIPHER_AES_XTS,
94 /**< AES algorithm in XTS mode */
96 RTE_CRYPTO_CIPHER_ARC4,
97 /**< (A)RC4 cipher algorithm */
99 RTE_CRYPTO_CIPHER_KASUMI_F8,
100 /**< KASUMI algorithm in F8 mode */
102 RTE_CRYPTO_CIPHER_SNOW3G_UEA2,
103 /**< SNOW 3G algorithm in UEA2 mode */
105 RTE_CRYPTO_CIPHER_ZUC_EEA3,
106 /**< ZUC algorithm in EEA3 mode */
108 RTE_CRYPTO_CIPHER_DES_CBC,
109 /**< DES algorithm in CBC mode */
111 RTE_CRYPTO_CIPHER_LIST_END
115 /** Symmetric Cipher Direction */
116 enum rte_crypto_cipher_operation {
117 RTE_CRYPTO_CIPHER_OP_ENCRYPT,
118 /**< Encrypt cipher operation */
119 RTE_CRYPTO_CIPHER_OP_DECRYPT
120 /**< Decrypt cipher operation */
124 * Symmetric Cipher Setup Data.
126 * This structure contains data relating to Cipher (Encryption and Decryption)
127 * use to create a session.
129 struct rte_crypto_cipher_xform {
130 enum rte_crypto_cipher_operation op;
131 /**< This parameter determines if the cipher operation is an encrypt or
132 * a decrypt operation. For the RC4 algorithm and the F8/CTR modes,
133 * only encrypt operations are valid.
135 enum rte_crypto_cipher_algorithm algo;
136 /**< Cipher algorithm */
139 uint8_t *data; /**< pointer to key data */
140 size_t length; /**< key length in bytes */
144 * For the RTE_CRYPTO_CIPHER_AES_F8 mode of operation, key.data will
145 * point to a concatenation of the AES encryption key followed by a
146 * keymask. As per RFC3711, the keymask should be padded with trailing
147 * bytes to match the length of the encryption key used.
149 * For AES-XTS mode of operation, two keys must be provided and
150 * key.data must point to the two keys concatenated together (Key1 ||
151 * Key2). The cipher key length will contain the total size of both
154 * Cipher key length is in bytes. For AES it can be 128 bits (16 bytes),
155 * 192 bits (24 bytes) or 256 bits (32 bytes).
157 * For the CCM mode of operation, the only supported key length is 128
160 * For the RTE_CRYPTO_CIPHER_AES_F8 mode of operation, key.length
161 * should be set to the combined length of the encryption key and the
162 * keymask. Since the keymask and the encryption key are the same size,
163 * key.length should be set to 2 x the AES encryption key length.
165 * For the AES-XTS mode of operation:
166 * - Two keys must be provided and key.length refers to total length of
168 * - Each key can be either 128 bits (16 bytes) or 256 bits (32 bytes).
169 * - Both keys must have the same size.
173 /** Symmetric Authentication / Hash Algorithms */
174 enum rte_crypto_auth_algorithm {
175 RTE_CRYPTO_AUTH_NULL = 1,
176 /**< NULL hash algorithm. */
178 RTE_CRYPTO_AUTH_AES_CBC_MAC,
179 /**< AES-CBC-MAC algorithm. Only 128-bit keys are supported. */
180 RTE_CRYPTO_AUTH_AES_CCM,
181 /**< AES algorithm in CCM mode. This is an authenticated cipher. When
182 * this hash algorithm is used, the *RTE_CRYPTO_CIPHER_AES_CCM*
183 * element of the *rte_crypto_cipher_algorithm* enum MUST be used to
184 * set up the related rte_crypto_cipher_setup_data structure in the
185 * session context or the corresponding parameter in the crypto
186 * operation data structures op_params parameter MUST be set for a
187 * session-less crypto operation.
189 RTE_CRYPTO_AUTH_AES_CMAC,
190 /**< AES CMAC algorithm. */
191 RTE_CRYPTO_AUTH_AES_GCM,
192 /**< AES algorithm in GCM mode. When this hash algorithm
193 * is used, the RTE_CRYPTO_CIPHER_AES_GCM element of the
194 * rte_crypto_cipher_algorithm enum MUST be used to set up the related
195 * rte_crypto_cipher_setup_data structure in the session context, or
196 * the corresponding parameter in the crypto operation data structures
197 * op_params parameter MUST be set for a session-less crypto operation.
199 RTE_CRYPTO_AUTH_AES_GMAC,
200 /**< AES GMAC algorithm. When this hash algorithm
201 * is used, the RTE_CRYPTO_CIPHER_AES_GCM element of the
202 * rte_crypto_cipher_algorithm enum MUST be used to set up the related
203 * rte_crypto_cipher_setup_data structure in the session context, or
204 * the corresponding parameter in the crypto operation data structures
205 * op_params parameter MUST be set for a session-less crypto operation.
207 RTE_CRYPTO_AUTH_AES_XCBC_MAC,
208 /**< AES XCBC algorithm. */
210 RTE_CRYPTO_AUTH_KASUMI_F9,
211 /**< KASUMI algorithm in F9 mode. */
214 /**< MD5 algorithm */
215 RTE_CRYPTO_AUTH_MD5_HMAC,
216 /**< HMAC using MD5 algorithm */
218 RTE_CRYPTO_AUTH_SHA1,
219 /**< 128 bit SHA algorithm. */
220 RTE_CRYPTO_AUTH_SHA1_HMAC,
221 /**< HMAC using 128 bit SHA algorithm. */
222 RTE_CRYPTO_AUTH_SHA224,
223 /**< 224 bit SHA algorithm. */
224 RTE_CRYPTO_AUTH_SHA224_HMAC,
225 /**< HMAC using 224 bit SHA algorithm. */
226 RTE_CRYPTO_AUTH_SHA256,
227 /**< 256 bit SHA algorithm. */
228 RTE_CRYPTO_AUTH_SHA256_HMAC,
229 /**< HMAC using 256 bit SHA algorithm. */
230 RTE_CRYPTO_AUTH_SHA384,
231 /**< 384 bit SHA algorithm. */
232 RTE_CRYPTO_AUTH_SHA384_HMAC,
233 /**< HMAC using 384 bit SHA algorithm. */
234 RTE_CRYPTO_AUTH_SHA512,
235 /**< 512 bit SHA algorithm. */
236 RTE_CRYPTO_AUTH_SHA512_HMAC,
237 /**< HMAC using 512 bit SHA algorithm. */
239 RTE_CRYPTO_AUTH_SNOW3G_UIA2,
240 /**< SNOW 3G algorithm in UIA2 mode. */
242 RTE_CRYPTO_AUTH_ZUC_EIA3,
243 /**< ZUC algorithm in EIA3 mode */
245 RTE_CRYPTO_AUTH_LIST_END
248 /** Symmetric Authentication / Hash Operations */
249 enum rte_crypto_auth_operation {
250 RTE_CRYPTO_AUTH_OP_VERIFY, /**< Verify authentication digest */
251 RTE_CRYPTO_AUTH_OP_GENERATE /**< Generate authentication digest */
255 * Authentication / Hash transform data.
257 * This structure contains data relating to an authentication/hash crypto
258 * transforms. The fields op, algo and digest_length are common to all
259 * authentication transforms and MUST be set.
261 struct rte_crypto_auth_xform {
262 enum rte_crypto_auth_operation op;
263 /**< Authentication operation type */
264 enum rte_crypto_auth_algorithm algo;
265 /**< Authentication algorithm selection */
268 uint8_t *data; /**< pointer to key data */
269 size_t length; /**< key length in bytes */
271 /**< Authentication key data.
272 * The authentication key length MUST be less than or equal to the
273 * block size of the algorithm. It is the callers responsibility to
274 * ensure that the key length is compliant with the standard being used
275 * (for example RFC 2104, FIPS 198a).
278 uint32_t digest_length;
279 /**< Length of the digest to be returned. If the verify option is set,
280 * this specifies the length of the digest to be compared for the
283 * If the value is less than the maximum length allowed by the hash,
284 * the result shall be truncated. If the value is greater than the
285 * maximum length allowed by the hash then an error will be generated
286 * by *rte_cryptodev_sym_session_create* or by the
287 * *rte_cryptodev_sym_enqueue_burst* if using session-less APIs.
290 uint32_t add_auth_data_length;
291 /**< The length of the additional authenticated data (AAD) in bytes.
292 * The maximum permitted value is 240 bytes, unless otherwise specified
295 * This field must be specified when the hash algorithm is one of the
298 * - For SNOW 3G (@ref RTE_CRYPTO_AUTH_SNOW3G_UIA2), this is the
299 * length of the IV (which should be 16).
301 * - For GCM (@ref RTE_CRYPTO_AUTH_AES_GCM). In this case, this is
302 * the length of the Additional Authenticated Data (called A, in NIST
305 * - For CCM (@ref RTE_CRYPTO_AUTH_AES_CCM). In this case, this is
306 * the length of the associated data (called A, in NIST SP800-38C).
307 * Note that this does NOT include the length of any padding, or the
308 * 18 bytes reserved at the start of the above field to store the
309 * block B0 and the encoded length. The maximum permitted value in
310 * this case is 222 bytes.
313 * For AES-GMAC (@ref RTE_CRYPTO_AUTH_AES_GMAC) mode of operation
314 * this field is not used and should be set to 0. Instead the length
315 * of the AAD data is specified in additional authentication data
316 * length field of the rte_crypto_sym_op_data structure
320 /** Crypto transformation types */
321 enum rte_crypto_sym_xform_type {
322 RTE_CRYPTO_SYM_XFORM_NOT_SPECIFIED = 0, /**< No xform specified */
323 RTE_CRYPTO_SYM_XFORM_AUTH, /**< Authentication xform */
324 RTE_CRYPTO_SYM_XFORM_CIPHER /**< Cipher xform */
328 * Symmetric crypto transform structure.
330 * This is used to specify the crypto transforms required, multiple transforms
331 * can be chained together to specify a chain transforms such as authentication
332 * then cipher, or cipher then authentication. Each transform structure can
333 * hold a single transform, the type field is used to specify which transform
334 * is contained within the union
336 struct rte_crypto_sym_xform {
337 struct rte_crypto_sym_xform *next;
338 /**< next xform in chain */
339 enum rte_crypto_sym_xform_type type
343 struct rte_crypto_auth_xform auth;
344 /**< Authentication / hash xform */
345 struct rte_crypto_cipher_xform cipher;
351 * Crypto operation session type. This is used to specify whether a crypto
352 * operation has session structure attached for immutable parameters or if all
353 * operation information is included in the operation data structure.
355 enum rte_crypto_sym_op_sess_type {
356 RTE_CRYPTO_SYM_OP_WITH_SESSION, /**< Session based crypto operation */
357 RTE_CRYPTO_SYM_OP_SESSIONLESS /**< Session-less crypto operation */
361 struct rte_cryptodev_sym_session;
364 * Symmetric Cryptographic Operation.
366 * This structure contains data relating to performing symmetric cryptographic
367 * processing on a referenced mbuf data buffer.
369 * When a symmetric crypto operation is enqueued with the device for processing
370 * it must have a valid *rte_mbuf* structure attached, via m_src parameter,
371 * which contains the source data which the crypto operation is to be performed
373 * While the mbuf is in use by a crypto operation no part of the mbuf should be
374 * changed by the application as the device may read or write to any part of the
375 * mbuf. In the case of hardware crypto devices some or all of the mbuf
376 * may be DMAed in and out of the device, so writing over the original data,
377 * though only the part specified by the rte_crypto_sym_op for transformation
379 * Out-of-place (OOP) operation, where the source mbuf is different to the
380 * destination mbuf, is a special case. Data will be copied from m_src to m_dst.
381 * The part copied includes all the parts of the source mbuf that will be
382 * operated on, based on the cipher.data.offset+cipher.data.length and
383 * auth.data.offset+auth.data.length values in the rte_crypto_sym_op. The part
384 * indicated by the cipher parameters will be transformed, any extra data around
385 * this indicated by the auth parameters will be copied unchanged from source to
387 * Also in OOP operation the cipher.data.offset and auth.data.offset apply to
388 * both source and destination mbufs. As these offsets are relative to the
389 * data_off parameter in each mbuf this can result in the data written to the
390 * destination buffer being at a different alignment, relative to buffer start,
391 * to the data in the source buffer.
393 struct rte_crypto_sym_op {
394 struct rte_mbuf *m_src; /**< source mbuf */
395 struct rte_mbuf *m_dst; /**< destination mbuf */
397 enum rte_crypto_sym_op_sess_type sess_type;
401 struct rte_cryptodev_sym_session *session;
402 /**< Handle for the initialised session context */
403 struct rte_crypto_sym_xform *xform;
404 /**< Session-less API crypto operation parameters */
410 /**< Starting point for cipher processing, specified
411 * as number of bytes from start of data in the source
412 * buffer. The result of the cipher operation will be
413 * written back into the output buffer starting at
417 * For SNOW 3G @ RTE_CRYPTO_CIPHER_SNOW3G_UEA2,
418 * KASUMI @ RTE_CRYPTO_CIPHER_KASUMI_F8
419 * and ZUC @ RTE_CRYPTO_CIPHER_ZUC_EEA3,
420 * this field should be in bits.
424 /**< The message length, in bytes, of the source buffer
425 * on which the cryptographic operation will be
426 * computed. This must be a multiple of the block size
427 * if a block cipher is being used. This is also the
428 * same as the result length.
431 * In the case of CCM @ref RTE_CRYPTO_AUTH_AES_CCM,
432 * this value should not include the length of the
433 * padding or the length of the MAC; the driver will
434 * compute the actual number of bytes over which the
435 * encryption will occur, which will include these
439 * For AES-GMAC @ref RTE_CRYPTO_AUTH_AES_GMAC, this
440 * field should be set to 0.
443 * For SNOW 3G @ RTE_CRYPTO_AUTH_SNOW3G_UEA2,
444 * KASUMI @ RTE_CRYPTO_CIPHER_KASUMI_F8
445 * and ZUC @ RTE_CRYPTO_CIPHER_ZUC_EEA3,
446 * this field should be in bits.
448 } data; /**< Data offsets and length for ciphering */
452 /**< Initialisation Vector or Counter.
454 * - For block ciphers in CBC or F8 mode, or for KASUMI
455 * in F8 mode, or for SNOW 3G in UEA2 mode, this is the
456 * Initialisation Vector (IV) value.
458 * - For block ciphers in CTR mode, this is the counter.
460 * - For GCM mode, this is either the IV (if the length
461 * is 96 bits) or J0 (for other sizes), where J0 is as
462 * defined by NIST SP800-38D. Regardless of the IV
463 * length, a full 16 bytes needs to be allocated.
465 * - For CCM mode, the first byte is reserved, and the
466 * nonce should be written starting at &iv[1] (to allow
467 * space for the implementation to write in the flags
468 * in the first byte). Note that a full 16 bytes should
469 * be allocated, even though the length field will
470 * have a value less than this.
472 * - For AES-XTS, this is the 128bit tweak, i, from
473 * IEEE Std 1619-2007.
475 * For optimum performance, the data pointed to SHOULD
478 phys_addr_t phys_addr;
480 /**< Length of valid IV data.
482 * - For block ciphers in CBC or F8 mode, or for KASUMI
483 * in F8 mode, or for SNOW 3G in UEA2 mode, this is the
484 * length of the IV (which must be the same as the
485 * block length of the cipher).
487 * - For block ciphers in CTR mode, this is the length
488 * of the counter (which must be the same as the block
489 * length of the cipher).
491 * - For GCM mode, this is either 12 (for 96-bit IVs)
492 * or 16, in which case data points to J0.
494 * - For CCM mode, this is the length of the nonce,
495 * which can be in the range 7 to 13 inclusive.
497 } iv; /**< Initialisation vector parameters */
503 /**< Starting point for hash processing, specified as
504 * number of bytes from start of packet in source
508 * For CCM and GCM modes of operation, this field is
509 * ignored. The field @ref aad field
510 * should be set instead.
512 * @note For AES-GMAC (@ref RTE_CRYPTO_AUTH_AES_GMAC)
513 * mode of operation, this field is set to 0. aad data
514 * pointer of rte_crypto_sym_op_data structure is
518 * For SNOW 3G @ RTE_CRYPTO_AUTH_SNOW3G_UIA2,
519 * KASUMI @ RTE_CRYPTO_AUTH_KASUMI_F9
520 * and ZUC @ RTE_CRYPTO_AUTH_ZUC_EIA3,
521 * this field should be in bits.
525 /**< The message length, in bytes, of the source
526 * buffer that the hash will be computed on.
529 * For CCM and GCM modes of operation, this field is
530 * ignored. The field @ref aad field should be set
534 * For AES-GMAC @ref RTE_CRYPTO_AUTH_AES_GMAC mode
535 * of operation, this field is set to 0.
536 * Auth.aad.length is used instead.
539 * For SNOW 3G @ RTE_CRYPTO_AUTH_SNOW3G_UIA2,
540 * KASUMI @ RTE_CRYPTO_AUTH_KASUMI_F9
541 * and ZUC @ RTE_CRYPTO_AUTH_ZUC_EIA3,
542 * this field should be in bits.
544 } data; /**< Data offsets and length for authentication */
548 /**< This points to the location where the digest result
549 * should be inserted (in the case of digest generation)
550 * or where the purported digest exists (in the case of
551 * digest verification).
553 * At session creation time, the client specified the
554 * digest result length with the digest_length member
555 * of the @ref rte_crypto_auth_xform structure. For
556 * physical crypto devices the caller must allocate at
557 * least digest_length of physically contiguous memory
560 * For digest generation, the digest result will
561 * overwrite any data at this location.
564 * For GCM (@ref RTE_CRYPTO_AUTH_AES_GCM), for
565 * "digest result" read "authentication tag T".
567 phys_addr_t phys_addr;
568 /**< Physical address of digest */
570 /**< Length of digest */
571 } digest; /**< Digest parameters */
575 /**< Pointer to Additional Authenticated Data (AAD)
576 * needed for authenticated cipher mechanisms (CCM and
577 * GCM), and to the IV for SNOW 3G authentication
578 * (@ref RTE_CRYPTO_AUTH_SNOW3G_UIA2). For other
579 * authentication mechanisms this pointer is ignored.
581 * The length of the data pointed to by this field is
582 * set up for the session in the @ref
583 * rte_crypto_auth_xform structure as part of the @ref
584 * rte_cryptodev_sym_session_create function call.
585 * This length must not exceed 240 bytes.
587 * Specifically for CCM (@ref RTE_CRYPTO_AUTH_AES_CCM),
588 * the caller should setup this field as follows:
590 * - the nonce should be written starting at an offset
591 * of one byte into the array, leaving room for the
592 * implementation to write in the flags to the first
595 * - the additional authentication data itself should
596 * be written starting at an offset of 18 bytes into
597 * the array, leaving room for the length encoding in
598 * the first two bytes of the second block.
600 * - the array should be big enough to hold the above
601 * fields, plus any padding to round this up to the
602 * nearest multiple of the block size (16 bytes).
603 * Padding will be added by the implementation.
605 * Finally, for GCM (@ref RTE_CRYPTO_AUTH_AES_GCM), the
606 * caller should setup this field as follows:
608 * - the AAD is written in starting at byte 0
609 * - the array must be big enough to hold the AAD, plus
610 * any space to round this up to the nearest multiple
611 * of the block size (16 bytes).
614 * For AES-GMAC (@ref RTE_CRYPTO_AUTH_AES_GMAC) mode of
615 * operation, this field is used to pass plaintext.
617 phys_addr_t phys_addr; /**< physical address */
618 uint16_t length; /**< Length of digest */
620 /**< Additional authentication parameters */
622 } __rte_cache_aligned;
626 * Reset the fields of a symmetric operation to their default values.
628 * @param op The crypto operation to be reset.
631 __rte_crypto_sym_op_reset(struct rte_crypto_sym_op *op)
633 memset(op, 0, sizeof(*op));
635 op->sess_type = RTE_CRYPTO_SYM_OP_SESSIONLESS;
640 * Allocate space for symmetric crypto xforms in the private data space of the
641 * crypto operation. This also defaults the crypto xform type to
642 * RTE_CRYPTO_SYM_XFORM_NOT_SPECIFIED and configures the chaining of the xforms
643 * in the crypto operation
646 * - On success returns pointer to first crypto xform in crypto operations chain
647 * - On failure returns NULL
649 static inline struct rte_crypto_sym_xform *
650 __rte_crypto_sym_op_sym_xforms_alloc(struct rte_crypto_sym_op *sym_op,
651 void *priv_data, uint8_t nb_xforms)
653 struct rte_crypto_sym_xform *xform;
655 sym_op->xform = xform = (struct rte_crypto_sym_xform *)priv_data;
658 xform->type = RTE_CRYPTO_SYM_XFORM_NOT_SPECIFIED;
659 xform = xform->next = --nb_xforms > 0 ? xform + 1 : NULL;
662 return sym_op->xform;
667 * Attach a session to a symmetric crypto operation
669 * @param sym_op crypto operation
670 * @param sess cryptodev session
673 __rte_crypto_sym_op_attach_sym_session(struct rte_crypto_sym_op *sym_op,
674 struct rte_cryptodev_sym_session *sess)
676 sym_op->session = sess;
677 sym_op->sess_type = RTE_CRYPTO_SYM_OP_WITH_SESSION;
687 #endif /* _RTE_CRYPTO_SYM_H_ */