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mbedtls_psa_export_ffdh_public_key: return fixed key size

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Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
This commit is contained in:
Przemek Stekiel 2023-05-05 12:33:46 +02:00
parent 134cc2e7a8
commit 837d2d1c5e
1 changed files with 3 additions and 3 deletions
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6
library/psa_crypto_ffdh.c
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@ -192,12 +192,12 @@ psa_status_t mbedtls_psa_export_ffdh_public_key(
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
mbedtls_mpi GX, G, X, P;
(void) attributes;
mbedtls_mpi_init(&GX); mbedtls_mpi_init(&G);
mbedtls_mpi_init(&X); mbedtls_mpi_init(&P);
status = mbedtls_psa_ffdh_set_prime_generator(
PSA_BITS_TO_BYTES(attributes->core.bits), &P, &G);
status = mbedtls_psa_ffdh_set_prime_generator(data_size, &P, &G);
if (status != PSA_SUCCESS) {
goto cleanup;
@ -209,7 +209,7 @@ psa_status_t mbedtls_psa_export_ffdh_public_key(
MBEDTLS_MPI_CHK(mbedtls_mpi_exp_mod(&GX, &G, &X, &P, NULL));
MBEDTLS_MPI_CHK(mbedtls_mpi_write_binary(&GX, data, data_size));
*data_length = mbedtls_mpi_size(&GX);
*data_length = data_size;
ret = 0;
cleanup: