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programs_rsa_rsa_verify: Updated program to use mbedtls_rsa_get_len()

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Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
This commit is contained in:
Minos Galanakis
2024-01-12 15:13:47 +00:00
parent 992f0b8427
commit 6e92df12c2
1 changed files with 9 additions and 6 deletions
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15
programs/pkey/rsa_verify.c
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@@ -37,11 +37,14 @@ int main(int argc, char *argv[])
int exit_code = MBEDTLS_EXIT_FAILURE; int exit_code = MBEDTLS_EXIT_FAILURE;
size_t i; size_t i;
mbedtls_rsa_context rsa; mbedtls_rsa_context rsa;
mbedtls_mpi N, E;
unsigned char hash[32]; unsigned char hash[32];
unsigned char buf[MBEDTLS_MPI_MAX_SIZE]; unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
char filename[512]; char filename[512];
mbedtls_rsa_init(&rsa); mbedtls_rsa_init(&rsa);
mbedtls_mpi_init(&N);
mbedtls_mpi_init(&E);
if (argc != 2) { if (argc != 2) {
mbedtls_printf("usage: rsa_verify <filename>\n"); mbedtls_printf("usage: rsa_verify <filename>\n");
@@ -62,15 +65,13 @@ int main(int argc, char *argv[])
goto exit; goto exit;
} }
if ((ret = mbedtls_mpi_read_file(&rsa.MBEDTLS_PRIVATE(N), 16, f)) != 0 || if ((ret = mbedtls_mpi_read_file(&N, 16, f)) != 0 ||
(ret = mbedtls_mpi_read_file(&rsa.MBEDTLS_PRIVATE(E), 16, f)) != 0) { (ret = mbedtls_mpi_read_file(&E, 16, f)) != 0 ||
(ret = mbedtls_rsa_import(&rsa, &N, NULL, NULL, NULL, &E) != 0)) {
mbedtls_printf(" failed\n ! mbedtls_mpi_read_file returned %d\n\n", ret); mbedtls_printf(" failed\n ! mbedtls_mpi_read_file returned %d\n\n", ret);
fclose(f); fclose(f);
goto exit; goto exit;
} }
rsa.MBEDTLS_PRIVATE(len) = (mbedtls_mpi_bitlen(&rsa.MBEDTLS_PRIVATE(N)) + 7) >> 3;
fclose(f); fclose(f);
/* /*
@@ -91,7 +92,7 @@ int main(int argc, char *argv[])
fclose(f); fclose(f);
if (i != rsa.MBEDTLS_PRIVATE(len)) { if (i != mbedtls_rsa_get_len(&rsa)) {
mbedtls_printf("\n ! Invalid RSA signature format\n\n"); mbedtls_printf("\n ! Invalid RSA signature format\n\n");
goto exit; goto exit;
} }
@@ -124,6 +125,8 @@ int main(int argc, char *argv[])
exit: exit:
mbedtls_rsa_free(&rsa); mbedtls_rsa_free(&rsa);
mbedtls_mpi_free(&N);
mbedtls_mpi_free(&E);
mbedtls_exit(exit_code); mbedtls_exit(exit_code);
} }