Mbed TLS v3.6.7
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crypto_sizes.h
Go to the documentation of this file.
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/*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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*/
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#ifndef PSA_CRYPTO_SIZES_H
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#define PSA_CRYPTO_SIZES_H
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/*
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* Include the build-time configuration information header. Here, we do not
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* include `"mbedtls/build_info.h"` directly but `"psa/build_info.h"`, which
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* is basically just an alias to it. This is to ease the maintenance of the
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* TF-PSA-Crypto repository which has a different build system and
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* configuration.
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*/
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#include "
psa/build_info.h
"
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#define PSA_BITS_TO_BYTES(bits) (((bits) + 7u) / 8u)
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#define PSA_BYTES_TO_BITS(bytes) ((bytes) * 8u)
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#define PSA_MAX_OF_THREE(a, b, c) ((a) <= (b) ? (b) <= (c) ? \
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(c) : (b) : (a) <= (c) ? (c) : (a))
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#define PSA_ROUND_UP_TO_MULTIPLE(block_size, length) \
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(((length) + (block_size) - 1) / (block_size) * (block_size))
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60
#define PSA_HASH_LENGTH(alg) \
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( \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 16u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 20u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 20u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 28u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 32u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 48u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 64u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 28u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 32u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 28u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 32u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 48u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 64u : \
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0u)
76
92
#define PSA_HASH_BLOCK_LENGTH(alg) \
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( \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 64u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 64u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 64u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 64u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 64u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 128u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 128u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 128u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 128u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 144u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 136u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 104u : \
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PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 72u : \
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0u)
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/* Note: for HMAC-SHA-3, the block size is 144 bytes for HMAC-SHA3-224,
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* 136 bytes for HMAC-SHA3-256, 104 bytes for SHA3-384, 72 bytes for
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* HMAC-SHA3-512. */
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/* Note: PSA_HASH_MAX_SIZE should be kept in sync with MBEDTLS_MD_MAX_SIZE,
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* see the note on MBEDTLS_MD_MAX_SIZE for details. */
121
#if defined(PSA_WANT_ALG_SHA3_224)
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#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 144u
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#elif defined(PSA_WANT_ALG_SHA3_256)
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#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 136u
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#elif defined(PSA_WANT_ALG_SHA_512)
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#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 128u
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#elif defined(PSA_WANT_ALG_SHA_384)
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#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 128u
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#elif defined(PSA_WANT_ALG_SHA3_384)
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#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 104u
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#elif defined(PSA_WANT_ALG_SHA3_512)
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#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 72u
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#elif defined(PSA_WANT_ALG_SHA_256)
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#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64u
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#elif defined(PSA_WANT_ALG_SHA_224)
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#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64u
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#else
/* SHA-1 or smaller */
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#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64u
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#endif
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#if defined(PSA_WANT_ALG_SHA_512) || defined(PSA_WANT_ALG_SHA3_512)
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#define PSA_HASH_MAX_SIZE 64u
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#elif defined(PSA_WANT_ALG_SHA_384) || defined(PSA_WANT_ALG_SHA3_384)
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#define PSA_HASH_MAX_SIZE 48u
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#elif defined(PSA_WANT_ALG_SHA_256) || defined(PSA_WANT_ALG_SHA3_256)
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#define PSA_HASH_MAX_SIZE 32u
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#elif defined(PSA_WANT_ALG_SHA_224) || defined(PSA_WANT_ALG_SHA3_224)
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#define PSA_HASH_MAX_SIZE 28u
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#else
/* SHA-1 or smaller */
150
#define PSA_HASH_MAX_SIZE 20u
151
#endif
152
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/* All non-HMAC MACs have a maximum size that's smaller than the
161
* minimum possible value of PSA_HASH_MAX_SIZE in this implementation. */
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/* Note that the encoding of truncated MAC algorithms limits this value
163
* to 64 bytes.
164
*/
165
#define PSA_MAC_MAX_SIZE PSA_HASH_MAX_SIZE
166
188
#define PSA_AEAD_TAG_LENGTH(key_type, key_bits, alg) \
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(PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 ? \
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PSA_ALG_AEAD_GET_TAG_LENGTH(alg) : \
191
((void) (key_bits), 0u))
192
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#define PSA_AEAD_TAG_MAX_SIZE 16u
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/* The maximum size of an RSA key on this implementation, in bits.
200
* This is a vendor-specific macro.
201
*
202
* Mbed TLS does not set a hard limit on the size of RSA keys: any key
203
* whose parameters fit in a bignum is accepted. However large keys can
204
* induce a large memory usage and long computation times. Unlike other
205
* auxiliary macros in this file and in crypto.h, which reflect how the
206
* library is configured, this macro defines how the library is
207
* configured. This implementation refuses to import or generate an
208
* RSA key whose size is larger than the value defined here.
209
*
210
* Note that an implementation may set different size limits for different
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* operations, and does not need to accept all key sizes up to the limit. */
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#define PSA_VENDOR_RSA_MAX_KEY_BITS 4096u
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/* The minimum size of an RSA key on this implementation, in bits.
215
* This is a vendor-specific macro.
216
*
217
* Limits RSA key generation to a minimum due to avoid accidental misuse.
218
* This value cannot be less than 128 bits.
219
*/
220
#if defined(MBEDTLS_RSA_GEN_KEY_MIN_BITS)
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#define PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS MBEDTLS_RSA_GEN_KEY_MIN_BITS
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#else
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#define PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS 1024
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#endif
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/* The maximum size of an DH key on this implementation, in bits.
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* This is a vendor-specific macro.*/
228
#if defined(PSA_WANT_DH_RFC7919_8192)
229
#define PSA_VENDOR_FFDH_MAX_KEY_BITS 8192u
230
#elif defined(PSA_WANT_DH_RFC7919_6144)
231
#define PSA_VENDOR_FFDH_MAX_KEY_BITS 6144u
232
#elif defined(PSA_WANT_DH_RFC7919_4096)
233
#define PSA_VENDOR_FFDH_MAX_KEY_BITS 4096u
234
#elif defined(PSA_WANT_DH_RFC7919_3072)
235
#define PSA_VENDOR_FFDH_MAX_KEY_BITS 3072u
236
#elif defined(PSA_WANT_DH_RFC7919_2048)
237
#define PSA_VENDOR_FFDH_MAX_KEY_BITS 2048u
238
#else
239
#define PSA_VENDOR_FFDH_MAX_KEY_BITS 0u
240
#endif
241
242
/* The maximum size of an ECC key on this implementation, in bits.
243
* This is a vendor-specific macro. */
244
#if defined(PSA_WANT_ECC_SECP_R1_521)
245
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 521u
246
#elif defined(PSA_WANT_ECC_BRAINPOOL_P_R1_512)
247
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 512u
248
#elif defined(PSA_WANT_ECC_MONTGOMERY_448)
249
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 448u
250
#elif defined(PSA_WANT_ECC_SECP_R1_384)
251
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 384u
252
#elif defined(PSA_WANT_ECC_BRAINPOOL_P_R1_384)
253
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 384u
254
#elif defined(PSA_WANT_ECC_SECP_R1_256)
255
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256u
256
#elif defined(PSA_WANT_ECC_SECP_K1_256)
257
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256u
258
#elif defined(PSA_WANT_ECC_BRAINPOOL_P_R1_256)
259
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256u
260
#elif defined(PSA_WANT_ECC_MONTGOMERY_255)
261
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 255u
262
#elif defined(PSA_WANT_ECC_SECP_R1_224)
263
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 224u
264
#elif defined(PSA_WANT_ECC_SECP_K1_224)
265
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 224u
266
#elif defined(PSA_WANT_ECC_SECP_R1_192)
267
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 192u
268
#elif defined(PSA_WANT_ECC_SECP_K1_192)
269
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 192u
270
#else
271
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 0u
272
#endif
273
289
#define PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE 128u
290
291
/* The expected size of input passed to psa_tls12_ecjpake_to_pms_input,
292
* which is expected to work with P-256 curve only. */
293
#define PSA_TLS12_ECJPAKE_TO_PMS_INPUT_SIZE 65u
294
295
/* The size of a serialized K.X coordinate to be used in
296
* psa_tls12_ecjpake_to_pms_input. This function only accepts the P-256
297
* curve. */
298
#define PSA_TLS12_ECJPAKE_TO_PMS_DATA_SIZE 32u
299
300
/* The maximum number of iterations for PBKDF2 on this implementation, in bits.
301
* This is a vendor-specific macro. This can be configured if necessary */
302
#define PSA_VENDOR_PBKDF2_MAX_ITERATIONS 0xffffffffU
303
305
#define PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE 16u
306
328
#define PSA_MAC_LENGTH(key_type, key_bits, alg) \
329
((alg) & PSA_ALG_MAC_TRUNCATION_MASK ? PSA_MAC_TRUNCATED_LENGTH(alg) : \
330
PSA_ALG_IS_HMAC(alg) ? PSA_HASH_LENGTH(PSA_ALG_HMAC_GET_HASH(alg)) : \
331
PSA_ALG_IS_BLOCK_CIPHER_MAC(alg) ? PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
332
((void) (key_type), (void) (key_bits), 0u))
333
360
#define PSA_AEAD_ENCRYPT_OUTPUT_SIZE(key_type, alg, plaintext_length) \
361
(PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 ? \
362
(plaintext_length) + PSA_ALG_AEAD_GET_TAG_LENGTH(alg) : \
363
0u)
364
383
#define PSA_AEAD_ENCRYPT_OUTPUT_MAX_SIZE(plaintext_length) \
384
((plaintext_length) + PSA_AEAD_TAG_MAX_SIZE)
385
386
413
#define PSA_AEAD_DECRYPT_OUTPUT_SIZE(key_type, alg, ciphertext_length) \
414
(PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 && \
415
(ciphertext_length) > PSA_ALG_AEAD_GET_TAG_LENGTH(alg) ? \
416
(ciphertext_length) - PSA_ALG_AEAD_GET_TAG_LENGTH(alg) : \
417
0u)
418
437
#define PSA_AEAD_DECRYPT_OUTPUT_MAX_SIZE(ciphertext_length) \
438
(ciphertext_length)
439
465
#define PSA_AEAD_NONCE_LENGTH(key_type, alg) \
466
(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) == 16 ? \
467
MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_CCM) ? 13u : \
468
MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_GCM) ? 12u : \
469
0u : \
470
(key_type) == PSA_KEY_TYPE_CHACHA20 && \
471
MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_CHACHA20_POLY1305) ? 12u : \
472
0u)
473
485
#define PSA_AEAD_NONCE_MAX_SIZE 13u
486
513
/* For all the AEAD modes defined in this specification, it is possible
514
* to emit output without delay. However, hardware may not always be
515
* capable of this. So for modes based on a block cipher, allow the
516
* implementation to delay the output until it has a full block. */
517
#define PSA_AEAD_UPDATE_OUTPUT_SIZE(key_type, alg, input_length) \
518
(PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 ? \
519
PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ? \
520
PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type), (input_length)) : \
521
(input_length) : \
522
0u)
523
534
#define PSA_AEAD_UPDATE_OUTPUT_MAX_SIZE(input_length) \
535
(PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE, (input_length)))
536
558
#define PSA_AEAD_FINISH_OUTPUT_SIZE(key_type, alg) \
559
(PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 && \
560
PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ? \
561
PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
562
0u)
563
569
#define PSA_AEAD_FINISH_OUTPUT_MAX_SIZE (PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE)
570
592
#define PSA_AEAD_VERIFY_OUTPUT_SIZE(key_type, alg) \
593
(PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 && \
594
PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ? \
595
PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
596
0u)
597
603
#define PSA_AEAD_VERIFY_OUTPUT_MAX_SIZE (PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE)
604
605
#define PSA_RSA_MINIMUM_PADDING_SIZE(alg) \
606
(PSA_ALG_IS_RSA_OAEP(alg) ? \
607
2u * PSA_HASH_LENGTH(PSA_ALG_RSA_OAEP_GET_HASH(alg)) + 1u : \
608
11u
/*PKCS#1v1.5*/
)
609
618
#define PSA_ECDSA_SIGNATURE_SIZE(curve_bits) \
619
(PSA_BITS_TO_BYTES(curve_bits) * 2u)
620
646
#define PSA_SIGN_OUTPUT_SIZE(key_type, key_bits, alg) \
647
(PSA_KEY_TYPE_IS_RSA(key_type) ? ((void) alg, PSA_BITS_TO_BYTES(key_bits)) : \
648
PSA_KEY_TYPE_IS_ECC(key_type) ? PSA_ECDSA_SIGNATURE_SIZE(key_bits) : \
649
((void) alg, 0u))
650
651
#define PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE \
652
PSA_ECDSA_SIGNATURE_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
653
661
#define PSA_SIGNATURE_MAX_SIZE 1
662
663
#if (defined(PSA_WANT_ALG_ECDSA) || defined(PSA_WANT_ALG_DETERMINISTIC_ECDSA)) && \
664
(PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE > PSA_SIGNATURE_MAX_SIZE)
665
#undef PSA_SIGNATURE_MAX_SIZE
666
#define PSA_SIGNATURE_MAX_SIZE PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE
667
#endif
668
#if (defined(PSA_WANT_ALG_RSA_PKCS1V15_SIGN) || defined(PSA_WANT_ALG_RSA_PSS)) && \
669
(PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS) > PSA_SIGNATURE_MAX_SIZE)
670
#undef PSA_SIGNATURE_MAX_SIZE
671
#define PSA_SIGNATURE_MAX_SIZE PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS)
672
#endif
673
699
#define PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE(key_type, key_bits, alg) \
700
(PSA_KEY_TYPE_IS_RSA(key_type) ? \
701
((void) alg, PSA_BITS_TO_BYTES(key_bits)) : \
702
0u)
703
709
/* This macro assumes that RSA is the only supported asymmetric encryption. */
710
#define PSA_ASYMMETRIC_ENCRYPT_OUTPUT_MAX_SIZE \
711
(PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS))
712
738
#define PSA_ASYMMETRIC_DECRYPT_OUTPUT_SIZE(key_type, key_bits, alg) \
739
(PSA_KEY_TYPE_IS_RSA(key_type) ? \
740
PSA_BITS_TO_BYTES(key_bits) - PSA_RSA_MINIMUM_PADDING_SIZE(alg) : \
741
0u)
742
750
#define PSA_ASYMMETRIC_DECRYPT_OUTPUT_MAX_SIZE \
751
(PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS))
752
753
/* Maximum size of the ASN.1 encoding of an INTEGER with the specified
754
* number of bits.
755
*
756
* This definition assumes that bits <= 2^19 - 9 so that the length field
757
* is at most 3 bytes. The length of the encoding is the length of the
758
* bit string padded to a whole number of bytes plus:
759
* - 1 type byte;
760
* - 1 to 3 length bytes;
761
* - 0 to 1 bytes of leading 0 due to the sign bit.
762
*/
763
#define PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(bits) \
764
((bits) / 8u + 5u)
765
766
/* Maximum size of the export encoding of an RSA public key.
767
* Assumes that the public exponent is less than 2^32.
768
*
769
* RSAPublicKey ::= SEQUENCE {
770
* modulus INTEGER, -- n
771
* publicExponent INTEGER } -- e
772
*
773
* - 4 bytes of SEQUENCE overhead;
774
* - n : INTEGER;
775
* - 7 bytes for the public exponent.
776
*/
777
#define PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(key_bits) \
778
(PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) + 11u)
779
780
/* Maximum size of the export encoding of an RSA key pair.
781
* Assumes that the public exponent is less than 2^32 and that the size
782
* difference between the two primes is at most 1 bit.
783
*
784
* RSAPrivateKey ::= SEQUENCE {
785
* version Version, -- 0
786
* modulus INTEGER, -- N-bit
787
* publicExponent INTEGER, -- 32-bit
788
* privateExponent INTEGER, -- N-bit
789
* prime1 INTEGER, -- N/2-bit
790
* prime2 INTEGER, -- N/2-bit
791
* exponent1 INTEGER, -- N/2-bit
792
* exponent2 INTEGER, -- N/2-bit
793
* coefficient INTEGER, -- N/2-bit
794
* }
795
*
796
* - 4 bytes of SEQUENCE overhead;
797
* - 3 bytes of version;
798
* - 7 half-size INTEGERs plus 2 full-size INTEGERs,
799
* overapproximated as 9 half-size INTEGERS;
800
* - 7 bytes for the public exponent.
801
*/
802
#define PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(key_bits) \
803
(9u * PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE((key_bits) / 2u + 1u) + 14u)
804
805
/* Maximum size of the export encoding of a DSA public key.
806
*
807
* SubjectPublicKeyInfo ::= SEQUENCE {
808
* algorithm AlgorithmIdentifier,
809
* subjectPublicKey BIT STRING } -- contains DSAPublicKey
810
* AlgorithmIdentifier ::= SEQUENCE {
811
* algorithm OBJECT IDENTIFIER,
812
* parameters Dss-Params } -- SEQUENCE of 3 INTEGERs
813
* DSAPublicKey ::= INTEGER -- public key, Y
814
*
815
* - 3 * 4 bytes of SEQUENCE overhead;
816
* - 1 + 1 + 7 bytes of algorithm (DSA OID);
817
* - 4 bytes of BIT STRING overhead;
818
* - 3 full-size INTEGERs (p, g, y);
819
* - 1 + 1 + 32 bytes for 1 sub-size INTEGER (q <= 256 bits).
820
*/
821
#define PSA_KEY_EXPORT_DSA_PUBLIC_KEY_MAX_SIZE(key_bits) \
822
(PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) * 3u + 59u)
823
824
/* Maximum size of the export encoding of a DSA key pair.
825
*
826
* DSAPrivateKey ::= SEQUENCE {
827
* version Version, -- 0
828
* prime INTEGER, -- p
829
* subprime INTEGER, -- q
830
* generator INTEGER, -- g
831
* public INTEGER, -- y
832
* private INTEGER, -- x
833
* }
834
*
835
* - 4 bytes of SEQUENCE overhead;
836
* - 3 bytes of version;
837
* - 3 full-size INTEGERs (p, g, y);
838
* - 2 * (1 + 1 + 32) bytes for 2 sub-size INTEGERs (q, x <= 256 bits).
839
*/
840
#define PSA_KEY_EXPORT_DSA_KEY_PAIR_MAX_SIZE(key_bits) \
841
(PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) * 3u + 75u)
842
843
/* Maximum size of the export encoding of an ECC public key.
844
*
845
* The representation of an ECC public key is:
846
* - The byte 0x04;
847
* - `x_P` as a `ceiling(m/8)`-byte string, big-endian;
848
* - `y_P` as a `ceiling(m/8)`-byte string, big-endian;
849
* - where m is the bit size associated with the curve.
850
*
851
* - 1 byte + 2 * point size.
852
*/
853
#define PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits) \
854
(2u * PSA_BITS_TO_BYTES(key_bits) + 1u)
855
856
/* Maximum size of the export encoding of an ECC key pair.
857
*
858
* An ECC key pair is represented by the secret value.
859
*/
860
#define PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(key_bits) \
861
(PSA_BITS_TO_BYTES(key_bits))
862
863
/* Maximum size of the export encoding of an DH key pair.
864
*
865
* An DH key pair is represented by the secret value.
866
*/
867
#define PSA_KEY_EXPORT_FFDH_KEY_PAIR_MAX_SIZE(key_bits) \
868
(PSA_BITS_TO_BYTES(key_bits))
869
870
/* Maximum size of the export encoding of an DH public key.
871
*/
872
#define PSA_KEY_EXPORT_FFDH_PUBLIC_KEY_MAX_SIZE(key_bits) \
873
(PSA_BITS_TO_BYTES(key_bits))
874
914
#define PSA_EXPORT_KEY_OUTPUT_SIZE(key_type, key_bits) \
915
((key_type) == PSA_KEY_TYPE_RSA_KEY_PAIR ? PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(key_bits) : \
916
(key_type) == PSA_KEY_TYPE_RSA_PUBLIC_KEY ? PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(key_bits) : \
917
PSA_KEY_TYPE_IS_ECC_KEY_PAIR(key_type) ? PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(key_bits) : \
918
PSA_KEY_TYPE_IS_ECC_PUBLIC_KEY(key_type) ? PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits) : \
919
PSA_BITS_TO_BYTES(key_bits))
/*unstructured; FFDH public or private*/
920
966
#define PSA_EXPORT_PUBLIC_KEY_OUTPUT_SIZE(key_type, key_bits) \
967
(PSA_KEY_TYPE_IS_RSA(key_type) ? PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(key_bits) : \
968
PSA_KEY_TYPE_IS_ECC(key_type) ? PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits) : \
969
PSA_KEY_TYPE_IS_DH(key_type) ? PSA_BITS_TO_BYTES(key_bits) : \
970
0u)
971
980
#define PSA_EXPORT_KEY_PAIR_MAX_SIZE 1
981
982
#if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_BASIC) && \
983
(PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS) > \
984
PSA_EXPORT_KEY_PAIR_MAX_SIZE)
985
#undef PSA_EXPORT_KEY_PAIR_MAX_SIZE
986
#define PSA_EXPORT_KEY_PAIR_MAX_SIZE \
987
PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
988
#endif
989
#if defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_BASIC) && \
990
(PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS) > \
991
PSA_EXPORT_KEY_PAIR_MAX_SIZE)
992
#undef PSA_EXPORT_KEY_PAIR_MAX_SIZE
993
#define PSA_EXPORT_KEY_PAIR_MAX_SIZE \
994
PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS)
995
#endif
996
#if defined(PSA_WANT_KEY_TYPE_DH_KEY_PAIR_BASIC) && \
997
(PSA_KEY_EXPORT_FFDH_KEY_PAIR_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS) > \
998
PSA_EXPORT_KEY_PAIR_MAX_SIZE)
999
#undef PSA_EXPORT_KEY_PAIR_MAX_SIZE
1000
#define PSA_EXPORT_KEY_PAIR_MAX_SIZE \
1001
PSA_KEY_EXPORT_FFDH_KEY_PAIR_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS)
1002
#endif
1003
1013
#define PSA_EXPORT_PUBLIC_KEY_MAX_SIZE 1
1014
1015
#if defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY) && \
1016
(PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS) > \
1017
PSA_EXPORT_PUBLIC_KEY_MAX_SIZE)
1018
#undef PSA_EXPORT_PUBLIC_KEY_MAX_SIZE
1019
#define PSA_EXPORT_PUBLIC_KEY_MAX_SIZE \
1020
PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
1021
#endif
1022
#if defined(PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY) && \
1023
(PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS) > \
1024
PSA_EXPORT_PUBLIC_KEY_MAX_SIZE)
1025
#undef PSA_EXPORT_PUBLIC_KEY_MAX_SIZE
1026
#define PSA_EXPORT_PUBLIC_KEY_MAX_SIZE \
1027
PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS)
1028
#endif
1029
#if defined(PSA_WANT_KEY_TYPE_DH_PUBLIC_KEY) && \
1030
(PSA_KEY_EXPORT_FFDH_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS) > \
1031
PSA_EXPORT_PUBLIC_KEY_MAX_SIZE)
1032
#undef PSA_EXPORT_PUBLIC_KEY_MAX_SIZE
1033
#define PSA_EXPORT_PUBLIC_KEY_MAX_SIZE \
1034
PSA_KEY_EXPORT_FFDH_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS)
1035
#endif
1036
1037
/* This is the name that was standardized in PSA Crypto v1.3 */
1038
#define PSA_EXPORT_ASYMMETRIC_KEY_MAX_SIZE \
1039
((PSA_EXPORT_KEY_PAIR_MAX_SIZE > PSA_EXPORT_PUBLIC_KEY_MAX_SIZE) ? \
1040
PSA_EXPORT_KEY_PAIR_MAX_SIZE : PSA_EXPORT_PUBLIC_KEY_MAX_SIZE)
1041
1042
/* This is our old custom name from before it was in the spec,
1043
* keep it around in case users were relying on it. */
1044
#define PSA_EXPORT_KEY_PAIR_OR_PUBLIC_MAX_SIZE \
1045
PSA_EXPORT_ASYMMETRIC_KEY_MAX_SIZE
1046
1070
#define PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE(key_type, key_bits) \
1071
((PSA_KEY_TYPE_IS_ECC_KEY_PAIR(key_type) || \
1072
PSA_KEY_TYPE_IS_DH_KEY_PAIR(key_type)) ? PSA_BITS_TO_BYTES(key_bits) : 0u)
1073
1081
#define PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE 1
1082
1083
#if defined(PSA_WANT_ALG_ECDH) && \
1084
(PSA_BITS_TO_BYTES(PSA_VENDOR_ECC_MAX_CURVE_BITS) > PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE)
1085
#undef PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE
1086
#define PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE PSA_BITS_TO_BYTES(PSA_VENDOR_ECC_MAX_CURVE_BITS)
1087
#endif
1088
#if defined(PSA_WANT_ALG_FFDH) && \
1089
(PSA_BITS_TO_BYTES(PSA_VENDOR_FFDH_MAX_KEY_BITS) > PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE)
1090
#undef PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE
1091
#define PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE PSA_BITS_TO_BYTES(PSA_VENDOR_FFDH_MAX_KEY_BITS)
1092
#endif
1093
1106
#if (defined(PSA_WANT_KEY_TYPE_AES) || defined(PSA_WANT_KEY_TYPE_ARIA) || \
1107
defined(PSA_WANT_KEY_TYPE_CAMELLIA) || defined(PSA_WANT_KEY_TYPE_CHACHA20))
1108
#define PSA_CIPHER_MAX_KEY_LENGTH 32u
1109
#elif defined(PSA_WANT_KEY_TYPE_DES)
1110
#define PSA_CIPHER_MAX_KEY_LENGTH 24u
1111
#else
1112
#define PSA_CIPHER_MAX_KEY_LENGTH 0u
1113
#endif
1114
1139
#define PSA_CIPHER_IV_LENGTH(key_type, alg) \
1140
(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) > 1 && \
1141
((alg) == PSA_ALG_CTR || \
1142
(alg) == PSA_ALG_CFB || \
1143
(alg) == PSA_ALG_OFB || \
1144
(alg) == PSA_ALG_XTS || \
1145
(alg) == PSA_ALG_CBC_NO_PADDING || \
1146
(alg) == PSA_ALG_CBC_PKCS7) ? PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
1147
(key_type) == PSA_KEY_TYPE_CHACHA20 && \
1148
(alg) == PSA_ALG_STREAM_CIPHER ? 12u : \
1149
(alg) == PSA_ALG_CCM_STAR_NO_TAG ? 13u : \
1150
0u)
1151
1156
#define PSA_CIPHER_IV_MAX_SIZE 16u
1157
1181
#define PSA_CIPHER_ENCRYPT_OUTPUT_SIZE(key_type, alg, input_length) \
1182
(alg == PSA_ALG_CBC_PKCS7 ? \
1183
(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) != 0 ? \
1184
PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type), \
1185
(input_length) + 1u) + \
1186
PSA_CIPHER_IV_LENGTH((key_type), (alg)) : 0u) : \
1187
(PSA_ALG_IS_CIPHER(alg) ? \
1188
(input_length) + PSA_CIPHER_IV_LENGTH((key_type), (alg)) : \
1189
0u))
1190
1202
#define PSA_CIPHER_ENCRYPT_OUTPUT_MAX_SIZE(input_length) \
1203
(PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE, \
1204
(input_length) + 1u) + \
1205
PSA_CIPHER_IV_MAX_SIZE)
1206
1226
#define PSA_CIPHER_DECRYPT_OUTPUT_SIZE(key_type, alg, input_length) \
1227
(PSA_ALG_IS_CIPHER(alg) && \
1228
((key_type) & PSA_KEY_TYPE_CATEGORY_MASK) == PSA_KEY_TYPE_CATEGORY_SYMMETRIC ? \
1229
(input_length) : \
1230
0u)
1231
1242
#define PSA_CIPHER_DECRYPT_OUTPUT_MAX_SIZE(input_length) \
1243
(input_length)
1244
1263
#define PSA_CIPHER_UPDATE_OUTPUT_SIZE(key_type, alg, input_length) \
1264
(PSA_ALG_IS_CIPHER(alg) ? \
1265
(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) != 0 ? \
1266
(((alg) == PSA_ALG_CBC_PKCS7 || \
1267
(alg) == PSA_ALG_CBC_NO_PADDING || \
1268
(alg) == PSA_ALG_ECB_NO_PADDING) ? \
1269
PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type), \
1270
input_length) : \
1271
(input_length)) : 0u) : \
1272
0u)
1273
1284
#define PSA_CIPHER_UPDATE_OUTPUT_MAX_SIZE(input_length) \
1285
(PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE, input_length))
1286
1304
#define PSA_CIPHER_FINISH_OUTPUT_SIZE(key_type, alg) \
1305
(PSA_ALG_IS_CIPHER(alg) ? \
1306
(alg == PSA_ALG_CBC_PKCS7 ? \
1307
PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
1308
0u) : \
1309
0u)
1310
1316
#define PSA_CIPHER_FINISH_OUTPUT_MAX_SIZE \
1317
(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE)
1318
1319
#endif
/* PSA_CRYPTO_SIZES_H */
build_info.h
Build-time PSA configuration info.
include
psa
crypto_sizes.h
Generated on
for Mbed TLS v3.6.7 by
1.17.0
1.17.0 1.17.0