mbedtls/tests/suites/test_suite_pkparse.function

/* BEGIN_HEADER */
#include "mbedtls/pk.h"
#include "mbedtls/pem.h"
#include "mbedtls/oid.h"
#include "mbedtls/ecp.h"
#include "mbedtls/psa_util.h"
#include "pk_internal.h"
/* END_HEADER */

/* BEGIN_DEPENDENCIES
 * depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_BIGNUM_C
 * END_DEPENDENCIES
 */

/* BEGIN_CASE depends_on:MBEDTLS_RSA_C:MBEDTLS_FS_IO */
void pk_parse_keyfile_rsa(char *key_file, char *password, int result)
{
    mbedtls_pk_context ctx;
    int res;
    char *pwd = password;

    mbedtls_pk_init(&ctx);
    MD_PSA_INIT();

    if (strcmp(pwd, "NULL") == 0) {
        pwd = NULL;
    }

    res = mbedtls_pk_parse_keyfile(&ctx, key_file, pwd,
                                   mbedtls_test_rnd_std_rand, NULL);

    TEST_ASSERT(res == result);

    if (res == 0) {
        mbedtls_rsa_context *rsa;
        TEST_ASSERT(mbedtls_pk_can_do(&ctx, MBEDTLS_PK_RSA));
        rsa = mbedtls_pk_rsa(ctx);
        TEST_ASSERT(mbedtls_rsa_check_privkey(rsa) == 0);
    }

exit:
    mbedtls_pk_free(&ctx);
    MD_PSA_DONE();
}

/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_RSA_C:MBEDTLS_FS_IO */
void pk_parse_public_keyfile_rsa(char *key_file, int result)
{
    mbedtls_pk_context ctx;
    int res;

    mbedtls_pk_init(&ctx);
    MD_PSA_INIT();

    res = mbedtls_pk_parse_public_keyfile(&ctx, key_file);

    TEST_ASSERT(res == result);

    if (res == 0) {
        mbedtls_rsa_context *rsa;
        TEST_ASSERT(mbedtls_pk_can_do(&ctx, MBEDTLS_PK_RSA));
        rsa = mbedtls_pk_rsa(ctx);
        TEST_ASSERT(mbedtls_rsa_check_pubkey(rsa) == 0);
    }

exit:
    mbedtls_pk_free(&ctx);
    MD_PSA_DONE();
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_PK_HAVE_ECC_KEYS */
void pk_parse_public_keyfile_ec(char *key_file, int result)
{
    mbedtls_pk_context ctx;
    int res;

    mbedtls_pk_init(&ctx);
    USE_PSA_INIT();

    res = mbedtls_pk_parse_public_keyfile(&ctx, key_file);

    TEST_ASSERT(res == result);

    if (res == 0) {
        TEST_ASSERT(mbedtls_pk_can_do(&ctx, MBEDTLS_PK_ECKEY));
#if defined(MBEDTLS_PK_USE_PSA_EC_DATA)
        /* No need to check whether the parsed public point is on the curve or
         * not because this is already done by the internal "pk_get_ecpubkey()"
         * function */
#else
        const mbedtls_ecp_keypair *eckey;
        eckey = mbedtls_pk_ec_ro(ctx);
        TEST_ASSERT(mbedtls_ecp_check_pubkey(&eckey->grp, &eckey->Q) == 0);
#endif
    }

exit:
    mbedtls_pk_free(&ctx);
    USE_PSA_DONE();
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_PK_HAVE_ECC_KEYS */
void pk_parse_keyfile_ec(char *key_file, char *password, int result)
{
    mbedtls_pk_context ctx;
    int res;

    mbedtls_pk_init(&ctx);
    USE_PSA_INIT();

    res = mbedtls_pk_parse_keyfile(&ctx, key_file, password,
                                   mbedtls_test_rnd_std_rand, NULL);

    TEST_ASSERT(res == result);

    if (res == 0) {
        TEST_ASSERT(mbedtls_pk_can_do(&ctx, MBEDTLS_PK_ECKEY));
#if defined(MBEDTLS_ECP_C)
        const mbedtls_ecp_keypair *eckey = mbedtls_pk_ec_ro(ctx);
        TEST_ASSERT(mbedtls_ecp_check_privkey(&eckey->grp, &eckey->d) == 0);
#else
        /* PSA keys are already checked on import so nothing to do here. */
#endif
    }

exit:
    mbedtls_pk_free(&ctx);
    USE_PSA_DONE();
}
/* END_CASE */

/* BEGIN_CASE */
void pk_parse_key(data_t *buf, int result)
{
    mbedtls_pk_context pk;

    mbedtls_pk_init(&pk);
    USE_PSA_INIT();

    TEST_ASSERT(mbedtls_pk_parse_key(&pk, buf->x, buf->len, NULL, 0,
                                     mbedtls_test_rnd_std_rand, NULL) == result);

exit:
    mbedtls_pk_free(&pk);
    USE_PSA_DONE();
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_PK_HAVE_ECC_KEYS:MBEDTLS_PK_WRITE_C */
void pk_parse_fix_montgomery(data_t *input_key, data_t *exp_output)
{
    /* Montgomery keys have specific bits set to either 0 or 1 depending on
     * their position. This is enforced during parsing (please see the implementation
     * of mbedtls_ecp_read_key() for more details). The scope of this function
     * is to verify this enforcing by feeding the parse algorithm with a x25519
     * key which does not have those bits set properly. */
    mbedtls_pk_context pk;
    unsigned char *output_key = NULL;
    size_t output_key_len = 0;

    mbedtls_pk_init(&pk);
    USE_PSA_INIT();

    TEST_EQUAL(mbedtls_pk_parse_key(&pk, input_key->x, input_key->len, NULL, 0,
                                    mbedtls_test_rnd_std_rand, NULL), 0);

    output_key_len = input_key->len;
    ASSERT_ALLOC(output_key, output_key_len);
    /* output_key_len is updated with the real amount of data written to
     * output_key buffer. */
    output_key_len = mbedtls_pk_write_key_der(&pk, output_key, output_key_len);
    TEST_ASSERT(output_key_len > 0);

    ASSERT_COMPARE(exp_output->x, exp_output->len, output_key, output_key_len);

exit:
    if (output_key != NULL) {
        mbedtls_free(output_key);
    }
    mbedtls_pk_free(&pk);
    USE_PSA_DONE();
}
/* END_CASE */