diff options
Diffstat (limited to 'hal_rpc.c')
| -rw-r--r-- | hal_rpc.c | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/hal_rpc.c b/hal_rpc.c new file mode 100644 index 0000000..6ad198e --- /dev/null +++ b/hal_rpc.c @@ -0,0 +1,324 @@ +/* + * hal_rpc.c + * --------- + * Remote procedure call public API implementation. + * + * Authors: Rob Austein + * Copyright (c) 2015, NORDUnet A/S All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of the NORDUnet nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "rpc_internal.h" + +#ifndef HAL_RPC_IS_CLIENT +#warning HAL_RPC_IS_CLIENT not set, assuming we're building for the HSM +#define HAL_RPC_IS_CLIENT 0 +#endif + +/* + * Maybe we'll let the client configure this at runtime, later. For + * now, wire in the obvious defaults: hashing is done locally, + * everything else is done via RPC. For the server everything is + * always done locally. + */ + +#if HAL_RPC_IS_CLIENT + +static const hal_rpc_misc_dispatch_t * const misc_dispatch = &hal_rpc_remote_misc_dispatch; +static const hal_rpc_hash_dispatch_t * const hash_dispatch = &hal_rpc_remote_hash_dispatch; +static const hal_rpc_pkey_dispatch_t * const pkey_dispatch = &hal_rpc_mixed_pkey_dispatch; + +#else + +static const hal_rpc_misc_dispatch_t * const misc_dispatch = &hal_rpc_local_misc_dispatch; +static const hal_rpc_hash_dispatch_t * const hash_dispatch = &hal_rpc_local_hash_dispatch; +static const hal_rpc_pkey_dispatch_t * const pkey_dispatch = &hal_rpc_local_pkey_dispatch; + +#endif + +const hal_rpc_hash_handle_t hal_rpc_hash_handle_none = {0}; + +static inline int check_pkey_type(const hal_rpc_pkey_key_type_t type) +{ + switch (type) { + case HAL_RPC_PKEY_RSA_PRIVATE: + case HAL_RPC_PKEY_RSA_PUBLIC: + case HAL_RPC_PKEY_ECDSA_PRIVATE: + case HAL_RPC_PKEY_ECDSA_PUBLIC: + return 1; + default: + return 0; + } +} + +static inline int check_pkey_flags(const hal_rpc_pkey_flags_t flags) +{ + return (flags &~ (HAL_RPC_PKEY_FLAG_USAGE_DIGITALSIGNATURE | + HAL_RPC_PKEY_FLAG_USAGE_KEYENCIPHERMENT | + HAL_RPC_PKEY_FLAG_USAGE_DATAENCIPHERMENT)) == 0; +} + +static inline int check_pkey_type_curve_flags(const hal_rpc_pkey_key_type_t type, + const hal_rpc_pkey_curve_t curve, + const hal_rpc_pkey_flags_t flags) +{ + if (!check_pkey_flags(flags)) + return 0; + + switch (type) { + + case HAL_RPC_PKEY_RSA_PRIVATE: + case HAL_RPC_PKEY_RSA_PUBLIC: + return curve == HAL_RPC_PKEY_CURVE_NONE; + + case HAL_RPC_PKEY_ECDSA_PRIVATE: + case HAL_RPC_PKEY_ECDSA_PUBLIC: + switch (curve) { + case HAL_RPC_PKEY_CURVE_ECDSA_P256: + case HAL_RPC_PKEY_CURVE_ECDSA_P384: + case HAL_RPC_PKEY_CURVE_ECDSA_P521: + return 1; + default: + return 0; + } + + default: + return 0; + } +} + + +hal_error_t hal_rpc_get_random(void *buffer, const size_t length) +{ + if (buffer == NULL) + return HAL_ERROR_BAD_ARGUMENTS; + if (length == 0) + return HAL_OK; + return misc_dispatch->get_random(buffer, length); +} + +#warning Perhaps we should be enforcing a minimum PIN length here + +hal_error_t hal_rpc_set_pin(const hal_rpc_user_t which, + const char * const newpin, const size_t newpin_len) +{ + if (newpin == NULL || newpin_len == 0 || (which != HAL_RPC_USER_NORMAL && which != HAL_RPC_USER_SO)) + return HAL_ERROR_BAD_ARGUMENTS; + return misc_dispatch->set_pin(which, newpin, newpin_len); +} + +hal_error_t hal_rpc_login(const hal_rpc_client_handle_t client, + const hal_rpc_user_t user, + const char * const pin, const size_t pin_len) +{ + if (pin == NULL || pin_len == 0 || (user != HAL_RPC_USER_NORMAL && user != HAL_RPC_USER_SO)) + return HAL_ERROR_BAD_ARGUMENTS; + return misc_dispatch->login(client, user, pin, pin_len); +} + +hal_error_t hal_rpc_logout(const hal_rpc_client_handle_t client) +{ + return misc_dispatch->logout(client); +} + +hal_error_t hal_rpc_hash_get_digest_length(const hal_digest_algorithm_t alg, size_t *length) +{ + if (length == NULL) + return HAL_ERROR_BAD_ARGUMENTS; + return hash_dispatch->get_digest_length(alg, length); +} + +hal_error_t hal_rpc_hash_get_digest_algorithm_id(const hal_digest_algorithm_t alg, + uint8_t *id, size_t *len, const size_t len_max) +{ + return hash_dispatch->get_digest_algorithm_id(alg, id, len, len_max); +} + +hal_error_t hal_rpc_hash_get_algorithm(const hal_rpc_hash_handle_t hash, hal_digest_algorithm_t *alg) +{ + if (hash.handle == hal_rpc_hash_handle_none.handle || alg == NULL) + return HAL_ERROR_BAD_ARGUMENTS; + return hash_dispatch->get_algorithm(hash, alg); +} + +hal_error_t hal_rpc_hash_initialize(const hal_rpc_client_handle_t client, + const hal_rpc_session_handle_t session, + hal_rpc_hash_handle_t *hash, + const hal_digest_algorithm_t alg, + const uint8_t * const key, const size_t key_len) +{ + if (hash == NULL) + return HAL_ERROR_BAD_ARGUMENTS; + return hash_dispatch->initialize(client, session, hash, alg, key, key_len); +} + +hal_error_t hal_rpc_hash_update(const hal_rpc_hash_handle_t hash, + const uint8_t * data, const size_t length) +{ + if (hash.handle == hal_rpc_hash_handle_none.handle || data == NULL) + return HAL_ERROR_BAD_ARGUMENTS; + if (length == 0) + return HAL_OK; + return hash_dispatch->update(hash, data, length); +} + +hal_error_t hal_rpc_hash_finalize(const hal_rpc_hash_handle_t hash, + uint8_t *digest, const size_t length) +{ + if (hash.handle == hal_rpc_hash_handle_none.handle || digest == NULL || length == 0) + return HAL_ERROR_BAD_ARGUMENTS; + return hash_dispatch->finalize(hash, digest, length); +} + +hal_error_t hal_rpc_pkey_load(const hal_rpc_client_handle_t client, + const hal_rpc_session_handle_t session, + hal_rpc_pkey_handle_t *pkey, + const hal_rpc_pkey_key_type_t type, + const hal_rpc_pkey_curve_t curve, + const uint8_t * const name, const size_t name_len, + const uint8_t * const der, const size_t der_len, + const hal_rpc_pkey_flags_t flags) +{ + if (pkey == NULL || + name == NULL || name_len == 0 || + der == NULL || der_len == 0 || + !check_pkey_type_curve_flags(type, curve, flags)) + return HAL_ERROR_BAD_ARGUMENTS; + return pkey_dispatch->load(client, session, pkey, type, curve, name, name_len, der, der_len, flags); +} + +hal_error_t hal_rpc_pkey_find(const hal_rpc_client_handle_t client, + const hal_rpc_session_handle_t session, + hal_rpc_pkey_handle_t *pkey, + const hal_rpc_pkey_key_type_t type, + const uint8_t * const name, const size_t name_len) +{ + if (pkey == NULL || name == NULL || name_len == 0 || !check_pkey_type(type)) + return HAL_ERROR_BAD_ARGUMENTS; + return pkey_dispatch->find(client, session, pkey, type, name, name_len); +} + +hal_error_t hal_rpc_pkey_generate_rsa(const hal_rpc_client_handle_t client, + const hal_rpc_session_handle_t session, + hal_rpc_pkey_handle_t *pkey, + const uint8_t * const name, const size_t name_len, + const unsigned key_len, + const uint8_t * const exp, const size_t exp_len, + const hal_rpc_pkey_flags_t flags) +{ + if (pkey == NULL || name == NULL || name_len == 0 || key_len == 0 || + exp == NULL || exp_len == 0 || !check_pkey_flags(flags)) + return HAL_ERROR_BAD_ARGUMENTS; + return pkey_dispatch->generate_rsa(client, session, pkey, name, name_len, key_len, exp, exp_len, flags); +} + +hal_error_t hal_rpc_pkey_generate_ec(const hal_rpc_client_handle_t client, + const hal_rpc_session_handle_t session, + hal_rpc_pkey_handle_t *pkey, + const uint8_t * const name, const size_t name_len, + const hal_rpc_pkey_curve_t curve, + const hal_rpc_pkey_flags_t flags) +{ + if (pkey == NULL || name == NULL || name_len == 0 || + !check_pkey_type_curve_flags(HAL_RPC_PKEY_ECDSA_PRIVATE, curve, flags)) + return HAL_ERROR_BAD_ARGUMENTS; + return pkey_dispatch->generate_ec(client, session, pkey, name, name_len, curve, flags); +} + +hal_error_t hal_rpc_pkey_delete(const hal_rpc_pkey_handle_t pkey) +{ + return pkey_dispatch->delete(pkey); +} + +hal_error_t hal_rpc_pkey_get_key_type(const hal_rpc_pkey_handle_t pkey, + hal_rpc_pkey_key_type_t *type) +{ + if (type == NULL) + return HAL_ERROR_BAD_ARGUMENTS; + return pkey_dispatch->get_key_type(pkey, type); +} + +hal_error_t hal_rpc_pkey_get_key_flags(const hal_rpc_pkey_handle_t pkey, + hal_rpc_pkey_flags_t *flags) +{ + if (flags == NULL) + return HAL_ERROR_BAD_ARGUMENTS; + return pkey_dispatch->get_key_flags(pkey, flags); +} + +size_t hal_rpc_pkey_get_public_key_len(const hal_rpc_pkey_handle_t pkey) +{ + return pkey_dispatch->get_public_key_len(pkey); +} + +hal_error_t hal_rpc_pkey_get_public_key(const hal_rpc_pkey_handle_t pkey, + uint8_t *der, size_t *der_len, const size_t der_len_max) +{ + if (der == NULL || der_len == NULL || der_len_max == 0) + return HAL_ERROR_BAD_ARGUMENTS; + return pkey_dispatch->get_public_key(pkey, der, der_len, der_len_max); +} + +hal_error_t hal_rpc_pkey_sign(const hal_rpc_session_handle_t session, + const hal_rpc_pkey_handle_t pkey, + const hal_rpc_hash_handle_t hash, + const uint8_t * const input, const size_t input_len, + uint8_t * output, const size_t output_len) +{ + if (output == NULL || output_len == 0 || + (hash.handle == hal_rpc_hash_handle_none.handle) == (input == NULL || input_len == 0)) + return HAL_ERROR_BAD_ARGUMENTS; + return pkey_dispatch->sign(session, pkey, hash, input, input_len, output, output_len); +} + +hal_error_t hal_rpc_pkey_verify(const hal_rpc_session_handle_t session, + const hal_rpc_pkey_handle_t pkey, + const hal_rpc_hash_handle_t hash, + const uint8_t * const input, const size_t input_len, + uint8_t * output, const size_t output_len) +{ + if (output == NULL || output_len == 0 || + (hash.handle == hal_rpc_hash_handle_none.handle) == (input == NULL || input_len == 0)) + return HAL_ERROR_BAD_ARGUMENTS; + return pkey_dispatch->verify(session, pkey, hash, input, input_len, output, output_len); +} + +hal_error_t hal_rpc_pkey_list(hal_rpc_pkey_key_info_t *result, + unsigned *result_len, + const unsigned result_max) +{ + if (result == NULL || result_len == NULL || result_max == 0) + return HAL_ERROR_BAD_ARGUMENTS; + return pkey_dispatch->list(result, result_len, result_max); +} + +/* + * Local variables: + * indent-tabs-mode: nil + * End: + */ |