mbed TLS v2.28.3
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crypto_sizes.h
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1
23/*
24 * Copyright The Mbed TLS Contributors
25 * SPDX-License-Identifier: Apache-2.0
26 *
27 * Licensed under the Apache License, Version 2.0 (the "License"); you may
28 * not use this file except in compliance with the License.
29 * You may obtain a copy of the License at
30 *
31 * http://www.apache.org/licenses/LICENSE-2.0
32 *
33 * Unless required by applicable law or agreed to in writing, software
34 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
35 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
36 * See the License for the specific language governing permissions and
37 * limitations under the License.
38 */
39
40#ifndef PSA_CRYPTO_SIZES_H
41#define PSA_CRYPTO_SIZES_H
42
43/* Include the Mbed TLS configuration file, the way Mbed TLS does it
44 * in each of its header files. */
45#if !defined(MBEDTLS_CONFIG_FILE)
46#include "mbedtls/config.h"
47#else
48#include MBEDTLS_CONFIG_FILE
49#endif
50
51#define PSA_BITS_TO_BYTES(bits) (((bits) + 7) / 8)
52#define PSA_BYTES_TO_BITS(bytes) ((bytes) * 8)
53
54#define PSA_ROUND_UP_TO_MULTIPLE(block_size, length) \
55 (((length) + (block_size) - 1) / (block_size) * (block_size))
56
69#define PSA_HASH_LENGTH(alg) \
70 ( \
71 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD2 ? 16 : \
72 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD4 ? 16 : \
73 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 16 : \
74 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 20 : \
75 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 20 : \
76 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 28 : \
77 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 32 : \
78 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 48 : \
79 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 64 : \
80 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 28 : \
81 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 32 : \
82 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 28 : \
83 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 32 : \
84 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 48 : \
85 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 64 : \
86 0)
87
103#define PSA_HASH_BLOCK_LENGTH(alg) \
104 ( \
105 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD2 ? 16 : \
106 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD4 ? 64 : \
107 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 64 : \
108 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 64 : \
109 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 64 : \
110 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 64 : \
111 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 64 : \
112 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 128 : \
113 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 128 : \
114 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 128 : \
115 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 128 : \
116 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 144 : \
117 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 136 : \
118 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 104 : \
119 PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 72 : \
120 0)
121
129/* Note: for HMAC-SHA-3, the block size is 144 bytes for HMAC-SHA3-226,
130 * 136 bytes for HMAC-SHA3-256, 104 bytes for SHA3-384, 72 bytes for
131 * HMAC-SHA3-512. */
132#if defined(PSA_WANT_ALG_SHA_512) || defined(PSA_WANT_ALG_SHA_384)
133#define PSA_HASH_MAX_SIZE 64
134#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 128
135#else
136#define PSA_HASH_MAX_SIZE 32
137#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64
138#endif
139
147/* All non-HMAC MACs have a maximum size that's smaller than the
148 * minimum possible value of PSA_HASH_MAX_SIZE in this implementation. */
149/* Note that the encoding of truncated MAC algorithms limits this value
150 * to 64 bytes.
151 */
152#define PSA_MAC_MAX_SIZE PSA_HASH_MAX_SIZE
153
175#define PSA_AEAD_TAG_LENGTH(key_type, key_bits, alg) \
176 (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 ? \
177 PSA_ALG_AEAD_GET_TAG_LENGTH(alg) : \
178 ((void) (key_bits), 0))
179
184#define PSA_AEAD_TAG_MAX_SIZE 16
185
186/* The maximum size of an RSA key on this implementation, in bits.
187 * This is a vendor-specific macro.
188 *
189 * Mbed TLS does not set a hard limit on the size of RSA keys: any key
190 * whose parameters fit in a bignum is accepted. However large keys can
191 * induce a large memory usage and long computation times. Unlike other
192 * auxiliary macros in this file and in crypto.h, which reflect how the
193 * library is configured, this macro defines how the library is
194 * configured. This implementation refuses to import or generate an
195 * RSA key whose size is larger than the value defined here.
196 *
197 * Note that an implementation may set different size limits for different
198 * operations, and does not need to accept all key sizes up to the limit. */
199#define PSA_VENDOR_RSA_MAX_KEY_BITS 4096
200
201/* The maximum size of an ECC key on this implementation, in bits.
202 * This is a vendor-specific macro. */
203#if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
204#define PSA_VENDOR_ECC_MAX_CURVE_BITS 521
205#elif defined(MBEDTLS_ECP_DP_BP512R1_ENABLED)
206#define PSA_VENDOR_ECC_MAX_CURVE_BITS 512
207#elif defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
208#define PSA_VENDOR_ECC_MAX_CURVE_BITS 448
209#elif defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
210#define PSA_VENDOR_ECC_MAX_CURVE_BITS 384
211#elif defined(MBEDTLS_ECP_DP_BP384R1_ENABLED)
212#define PSA_VENDOR_ECC_MAX_CURVE_BITS 384
213#elif defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
214#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256
215#elif defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
216#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256
217#elif defined(MBEDTLS_ECP_DP_BP256R1_ENABLED)
218#define PSA_VENDOR_ECC_MAX_CURVE_BITS 256
219#elif defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
220#define PSA_VENDOR_ECC_MAX_CURVE_BITS 255
221#elif defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED)
222#define PSA_VENDOR_ECC_MAX_CURVE_BITS 224
223#elif defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
224#define PSA_VENDOR_ECC_MAX_CURVE_BITS 224
225#elif defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED)
226#define PSA_VENDOR_ECC_MAX_CURVE_BITS 192
227#elif defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
228#define PSA_VENDOR_ECC_MAX_CURVE_BITS 192
229#else
230#define PSA_VENDOR_ECC_MAX_CURVE_BITS 0
231#endif
232
248#define PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE 128
249
251#define PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE 16
252
274#define PSA_MAC_LENGTH(key_type, key_bits, alg) \
275 ((alg) & PSA_ALG_MAC_TRUNCATION_MASK ? PSA_MAC_TRUNCATED_LENGTH(alg) : \
276 PSA_ALG_IS_HMAC(alg) ? PSA_HASH_LENGTH(PSA_ALG_HMAC_GET_HASH(alg)) : \
277 PSA_ALG_IS_BLOCK_CIPHER_MAC(alg) ? PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
278 ((void) (key_type), (void) (key_bits), 0))
279
306#define PSA_AEAD_ENCRYPT_OUTPUT_SIZE(key_type, alg, plaintext_length) \
307 (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 ? \
308 (plaintext_length) + PSA_ALG_AEAD_GET_TAG_LENGTH(alg) : \
309 0)
310
329#define PSA_AEAD_ENCRYPT_OUTPUT_MAX_SIZE(plaintext_length) \
330 ((plaintext_length) + PSA_AEAD_TAG_MAX_SIZE)
331
332
359#define PSA_AEAD_DECRYPT_OUTPUT_SIZE(key_type, alg, ciphertext_length) \
360 (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 && \
361 (ciphertext_length) > PSA_ALG_AEAD_GET_TAG_LENGTH(alg) ? \
362 (ciphertext_length) - PSA_ALG_AEAD_GET_TAG_LENGTH(alg) : \
363 0)
364
383#define PSA_AEAD_DECRYPT_OUTPUT_MAX_SIZE(ciphertext_length) \
384 (ciphertext_length)
385
411#define PSA_AEAD_NONCE_LENGTH(key_type, alg) \
412 (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) == 16 ? \
413 MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_CCM) ? 13 : \
414 MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_GCM) ? 12 : \
415 0 : \
416 (key_type) == PSA_KEY_TYPE_CHACHA20 && \
417 MBEDTLS_PSA_ALG_AEAD_EQUAL(alg, PSA_ALG_CHACHA20_POLY1305) ? 12 : \
418 0)
419
431#define PSA_AEAD_NONCE_MAX_SIZE 13
432
459/* For all the AEAD modes defined in this specification, it is possible
460 * to emit output without delay. However, hardware may not always be
461 * capable of this. So for modes based on a block cipher, allow the
462 * implementation to delay the output until it has a full block. */
463#define PSA_AEAD_UPDATE_OUTPUT_SIZE(key_type, alg, input_length) \
464 (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 ? \
465 PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ? \
466 PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type), (input_length)) : \
467 (input_length) : \
468 0)
469
480#define PSA_AEAD_UPDATE_OUTPUT_MAX_SIZE(input_length) \
481 (PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE, (input_length)))
482
504#define PSA_AEAD_FINISH_OUTPUT_SIZE(key_type, alg) \
505 (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 && \
506 PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ? \
507 PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
508 0)
509
515#define PSA_AEAD_FINISH_OUTPUT_MAX_SIZE (PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE)
516
538#define PSA_AEAD_VERIFY_OUTPUT_SIZE(key_type, alg) \
539 (PSA_AEAD_NONCE_LENGTH(key_type, alg) != 0 && \
540 PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ? \
541 PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
542 0)
543
549#define PSA_AEAD_VERIFY_OUTPUT_MAX_SIZE (PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE)
550
551#define PSA_RSA_MINIMUM_PADDING_SIZE(alg) \
552 (PSA_ALG_IS_RSA_OAEP(alg) ? \
553 2 * PSA_HASH_LENGTH(PSA_ALG_RSA_OAEP_GET_HASH(alg)) + 1 : \
554 11 /*PKCS#1v1.5*/)
555
564#define PSA_ECDSA_SIGNATURE_SIZE(curve_bits) \
565 (PSA_BITS_TO_BYTES(curve_bits) * 2)
566
592#define PSA_SIGN_OUTPUT_SIZE(key_type, key_bits, alg) \
593 (PSA_KEY_TYPE_IS_RSA(key_type) ? ((void) alg, PSA_BITS_TO_BYTES(key_bits)) : \
594 PSA_KEY_TYPE_IS_ECC(key_type) ? PSA_ECDSA_SIGNATURE_SIZE(key_bits) : \
595 ((void) alg, 0))
596
597#define PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE \
598 PSA_ECDSA_SIGNATURE_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
599
607#define PSA_SIGNATURE_MAX_SIZE \
608 (PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS) > PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE ? \
609 PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS) : \
610 PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE)
611
637#define PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE(key_type, key_bits, alg) \
638 (PSA_KEY_TYPE_IS_RSA(key_type) ? \
639 ((void) alg, PSA_BITS_TO_BYTES(key_bits)) : \
640 0)
641
647/* This macro assumes that RSA is the only supported asymmetric encryption. */
648#define PSA_ASYMMETRIC_ENCRYPT_OUTPUT_MAX_SIZE \
649 (PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS))
650
676#define PSA_ASYMMETRIC_DECRYPT_OUTPUT_SIZE(key_type, key_bits, alg) \
677 (PSA_KEY_TYPE_IS_RSA(key_type) ? \
678 PSA_BITS_TO_BYTES(key_bits) - PSA_RSA_MINIMUM_PADDING_SIZE(alg) : \
679 0)
680
688#define PSA_ASYMMETRIC_DECRYPT_OUTPUT_MAX_SIZE \
689 (PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS))
690
691/* Maximum size of the ASN.1 encoding of an INTEGER with the specified
692 * number of bits.
693 *
694 * This definition assumes that bits <= 2^19 - 9 so that the length field
695 * is at most 3 bytes. The length of the encoding is the length of the
696 * bit string padded to a whole number of bytes plus:
697 * - 1 type byte;
698 * - 1 to 3 length bytes;
699 * - 0 to 1 bytes of leading 0 due to the sign bit.
700 */
701#define PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(bits) \
702 ((bits) / 8 + 5)
703
704/* Maximum size of the export encoding of an RSA public key.
705 * Assumes that the public exponent is less than 2^32.
706 *
707 * RSAPublicKey ::= SEQUENCE {
708 * modulus INTEGER, -- n
709 * publicExponent INTEGER } -- e
710 *
711 * - 4 bytes of SEQUENCE overhead;
712 * - n : INTEGER;
713 * - 7 bytes for the public exponent.
714 */
715#define PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(key_bits) \
716 (PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) + 11)
717
718/* Maximum size of the export encoding of an RSA key pair.
719 * Assumes that the public exponent is less than 2^32 and that the size
720 * difference between the two primes is at most 1 bit.
721 *
722 * RSAPrivateKey ::= SEQUENCE {
723 * version Version, -- 0
724 * modulus INTEGER, -- N-bit
725 * publicExponent INTEGER, -- 32-bit
726 * privateExponent INTEGER, -- N-bit
727 * prime1 INTEGER, -- N/2-bit
728 * prime2 INTEGER, -- N/2-bit
729 * exponent1 INTEGER, -- N/2-bit
730 * exponent2 INTEGER, -- N/2-bit
731 * coefficient INTEGER, -- N/2-bit
732 * }
733 *
734 * - 4 bytes of SEQUENCE overhead;
735 * - 3 bytes of version;
736 * - 7 half-size INTEGERs plus 2 full-size INTEGERs,
737 * overapproximated as 9 half-size INTEGERS;
738 * - 7 bytes for the public exponent.
739 */
740#define PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(key_bits) \
741 (9 * PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE((key_bits) / 2 + 1) + 14)
742
743/* Maximum size of the export encoding of a DSA public key.
744 *
745 * SubjectPublicKeyInfo ::= SEQUENCE {
746 * algorithm AlgorithmIdentifier,
747 * subjectPublicKey BIT STRING } -- contains DSAPublicKey
748 * AlgorithmIdentifier ::= SEQUENCE {
749 * algorithm OBJECT IDENTIFIER,
750 * parameters Dss-Params } -- SEQUENCE of 3 INTEGERs
751 * DSAPublicKey ::= INTEGER -- public key, Y
752 *
753 * - 3 * 4 bytes of SEQUENCE overhead;
754 * - 1 + 1 + 7 bytes of algorithm (DSA OID);
755 * - 4 bytes of BIT STRING overhead;
756 * - 3 full-size INTEGERs (p, g, y);
757 * - 1 + 1 + 32 bytes for 1 sub-size INTEGER (q <= 256 bits).
758 */
759#define PSA_KEY_EXPORT_DSA_PUBLIC_KEY_MAX_SIZE(key_bits) \
760 (PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) * 3 + 59)
761
762/* Maximum size of the export encoding of a DSA key pair.
763 *
764 * DSAPrivateKey ::= SEQUENCE {
765 * version Version, -- 0
766 * prime INTEGER, -- p
767 * subprime INTEGER, -- q
768 * generator INTEGER, -- g
769 * public INTEGER, -- y
770 * private INTEGER, -- x
771 * }
772 *
773 * - 4 bytes of SEQUENCE overhead;
774 * - 3 bytes of version;
775 * - 3 full-size INTEGERs (p, g, y);
776 * - 2 * (1 + 1 + 32) bytes for 2 sub-size INTEGERs (q, x <= 256 bits).
777 */
778#define PSA_KEY_EXPORT_DSA_KEY_PAIR_MAX_SIZE(key_bits) \
779 (PSA_KEY_EXPORT_ASN1_INTEGER_MAX_SIZE(key_bits) * 3 + 75)
780
781/* Maximum size of the export encoding of an ECC public key.
782 *
783 * The representation of an ECC public key is:
784 * - The byte 0x04;
785 * - `x_P` as a `ceiling(m/8)`-byte string, big-endian;
786 * - `y_P` as a `ceiling(m/8)`-byte string, big-endian;
787 * - where m is the bit size associated with the curve.
788 *
789 * - 1 byte + 2 * point size.
790 */
791#define PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits) \
792 (2 * PSA_BITS_TO_BYTES(key_bits) + 1)
793
794/* Maximum size of the export encoding of an ECC key pair.
795 *
796 * An ECC key pair is represented by the secret value.
797 */
798#define PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(key_bits) \
799 (PSA_BITS_TO_BYTES(key_bits))
800
840#define PSA_EXPORT_KEY_OUTPUT_SIZE(key_type, key_bits) \
841 (PSA_KEY_TYPE_IS_UNSTRUCTURED(key_type) ? PSA_BITS_TO_BYTES(key_bits) : \
842 (key_type) == PSA_KEY_TYPE_RSA_KEY_PAIR ? PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(key_bits) : \
843 (key_type) == PSA_KEY_TYPE_RSA_PUBLIC_KEY ? PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(key_bits) : \
844 (key_type) == PSA_KEY_TYPE_DSA_KEY_PAIR ? PSA_KEY_EXPORT_DSA_KEY_PAIR_MAX_SIZE(key_bits) : \
845 (key_type) == PSA_KEY_TYPE_DSA_PUBLIC_KEY ? PSA_KEY_EXPORT_DSA_PUBLIC_KEY_MAX_SIZE(key_bits) : \
846 PSA_KEY_TYPE_IS_ECC_KEY_PAIR(key_type) ? PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(key_bits) : \
847 PSA_KEY_TYPE_IS_ECC_PUBLIC_KEY(key_type) ? PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits) : \
848 0)
849
895#define PSA_EXPORT_PUBLIC_KEY_OUTPUT_SIZE(key_type, key_bits) \
896 (PSA_KEY_TYPE_IS_RSA(key_type) ? PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(key_bits) : \
897 PSA_KEY_TYPE_IS_ECC(key_type) ? PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(key_bits) : \
898 0)
899
908#define PSA_EXPORT_KEY_PAIR_MAX_SIZE \
909 (PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS) > \
910 PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS) ? \
911 PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS) : \
912 PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS))
913
923#define PSA_EXPORT_PUBLIC_KEY_MAX_SIZE \
924 (PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS) > \
925 PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS) ? \
926 PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS) : \
927 PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS))
928
952/* FFDH is not yet supported in PSA. */
953#define PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE(key_type, key_bits) \
954 (PSA_KEY_TYPE_IS_ECC_KEY_PAIR(key_type) ? \
955 PSA_BITS_TO_BYTES(key_bits) : \
956 0)
957
965#define PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE \
966 (PSA_BITS_TO_BYTES(PSA_VENDOR_ECC_MAX_CURVE_BITS))
967
992#define PSA_CIPHER_IV_LENGTH(key_type, alg) \
993 (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) > 1 && \
994 ((alg) == PSA_ALG_CTR || \
995 (alg) == PSA_ALG_CFB || \
996 (alg) == PSA_ALG_OFB || \
997 (alg) == PSA_ALG_XTS || \
998 (alg) == PSA_ALG_CBC_NO_PADDING || \
999 (alg) == PSA_ALG_CBC_PKCS7) ? PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
1000 (key_type) == PSA_KEY_TYPE_CHACHA20 && \
1001 (alg) == PSA_ALG_STREAM_CIPHER ? 12 : \
1002 0)
1003
1008#define PSA_CIPHER_IV_MAX_SIZE 16
1009
1033#define PSA_CIPHER_ENCRYPT_OUTPUT_SIZE(key_type, alg, input_length) \
1034 (alg == PSA_ALG_CBC_PKCS7 ? \
1035 (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) != 0 ? \
1036 PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type), \
1037 (input_length) + 1) + \
1038 PSA_CIPHER_IV_LENGTH((key_type), (alg)) : 0) : \
1039 (PSA_ALG_IS_CIPHER(alg) ? \
1040 (input_length) + PSA_CIPHER_IV_LENGTH((key_type), (alg)) : \
1041 0))
1042
1054#define PSA_CIPHER_ENCRYPT_OUTPUT_MAX_SIZE(input_length) \
1055 (PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE, \
1056 (input_length) + 1) + \
1057 PSA_CIPHER_IV_MAX_SIZE)
1058
1078#define PSA_CIPHER_DECRYPT_OUTPUT_SIZE(key_type, alg, input_length) \
1079 (PSA_ALG_IS_CIPHER(alg) && \
1080 ((key_type) & PSA_KEY_TYPE_CATEGORY_MASK) == PSA_KEY_TYPE_CATEGORY_SYMMETRIC ? \
1081 (input_length) : \
1082 0)
1083
1094#define PSA_CIPHER_DECRYPT_OUTPUT_MAX_SIZE(input_length) \
1095 (input_length)
1096
1115#define PSA_CIPHER_UPDATE_OUTPUT_SIZE(key_type, alg, input_length) \
1116 (PSA_ALG_IS_CIPHER(alg) ? \
1117 (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) != 0 ? \
1118 (((alg) == PSA_ALG_CBC_PKCS7 || \
1119 (alg) == PSA_ALG_CBC_NO_PADDING || \
1120 (alg) == PSA_ALG_ECB_NO_PADDING) ? \
1121 PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type), \
1122 input_length) : \
1123 (input_length)) : 0) : \
1124 0)
1125
1136#define PSA_CIPHER_UPDATE_OUTPUT_MAX_SIZE(input_length) \
1137 (PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE, input_length))
1138
1156#define PSA_CIPHER_FINISH_OUTPUT_SIZE(key_type, alg) \
1157 (PSA_ALG_IS_CIPHER(alg) ? \
1158 (alg == PSA_ALG_CBC_PKCS7 ? \
1159 PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) : \
1160 0) : \
1161 0)
1162
1168#define PSA_CIPHER_FINISH_OUTPUT_MAX_SIZE \
1169 (PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE)
1170
1171#endif /* PSA_CRYPTO_SIZES_H */
Configuration options (set of defines)