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More precise bounds for PSA_ASYMMETRIC_DECRYPT_OUTPUT_SIZE

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Gilles Peskine 2018-04-11 16:58:22 +02:00 committed by itayzafrir
parent 9673cc8255
commit 06297936f2
1 changed files with 8 additions and 3 deletions
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11
include/psa/crypto.h
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@ -1335,10 +1335,15 @@ psa_status_t psa_asymmetric_verify(psa_key_slot_t key,
size_t signature_size); size_t signature_size);
#define PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE(key_type, key_bits, alg) \ #define PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE(key_type, key_bits, alg) \
(PSA_KEY_TYPE_IS_RSA(key_type) ? ((void)alg, PSA_BITS_TO_BYTES(key_bits)) : \ (PSA_KEY_TYPE_IS_RSA(key_type) ? \
((void)alg, 0)) ((void)alg, PSA_BITS_TO_BYTES(key_bits)) : \
0)
#define PSA_ASYMMETRIC_DECRYPT_OUTPUT_SIZE(key_type, key_bits, alg) \ #define PSA_ASYMMETRIC_DECRYPT_OUTPUT_SIZE(key_type, key_bits, alg) \
PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE(key_type, key_bits, alg) (PSA_KEY_TYPE_IS_RSA(key_type) ? \
PSA_BITS_TO_BYTES(key_bits) - ((alg) == PSA_ALG_IS_RSA_OAEP_MGF1 ? \
2 * (PSA_ALG_RSA_GET_HASH(alg) + 1) : \
11 /*PKCS#1v1.5*/) : \
0)
/** /**
* \brief Encrypt a short message with a public key. * \brief Encrypt a short message with a public key.