[Assignment-7] size ecalls

This commit is contained in:
Sascha Tommasone 2024-07-02 23:08:24 +02:00
parent 4ab3d2e750
commit c38917a48d
Signed by: saschato
GPG key ID: 751068A86FCAA217
3 changed files with 37 additions and 1 deletions

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@ -41,6 +41,33 @@
#include <sgx_error.h> #include <sgx_error.h>
#include <sgx_tcrypto.h> #include <sgx_tcrypto.h>
#ifndef SK_SIZE
#define SK_SIZE SGX_ECP256_KEY_SIZE
#endif
#ifndef PK_SIZE
#define PK_SIZE 2*SK_SIZE
#endif
#ifndef SI_SIZE
#define SI_SIZE 2*SK_SIZE
#endif
int get_sealed_size() {
return sgx_calc_sealed_data_size(PK_SIZE, SK_SIZE);
}
int get_signature_size() {
return SI_SIZE;
}
int get_public_key_size() {
return PK_SIZE;
}
int get_private_key_size() {
return SK_SIZE;
}
sgx_status_t seal_key_pair(sgx_ec256_private_t *private, sgx_ec256_public_t *public, uint8_t *sealed, uint32_t *sealed_size) { sgx_status_t seal_key_pair(sgx_ec256_private_t *private, sgx_ec256_public_t *public, uint8_t *sealed, uint32_t *sealed_size) {
// handle missing keypair // handle missing keypair

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@ -40,6 +40,10 @@ enclave {
*/ */
trusted { trusted {
public int get_sealed_size();
public int get_signature_size();
public int get_public_key_size();
public int get_private_key_size();
public sgx_status_t public_key([in, size=sealed_size]const uint8_t *sealed, size_t sealed_size, [out]uint8_t *gx, [out]uint8_t *gy); public sgx_status_t public_key([in, size=sealed_size]const uint8_t *sealed, size_t sealed_size, [out]uint8_t *gx, [out]uint8_t *gy);
public sgx_status_t sign_firmware([in, size=data_size]const uint8_t *sealed, size_t sealed_size, [in, size=data_size]uint8_t *data, size_t data_size, [out, size=signature_size]uint8_t *signature, size_t signature_size); public sgx_status_t sign_firmware([in, size=data_size]const uint8_t *sealed, size_t sealed_size, [in, size=data_size]uint8_t *data, size_t data_size, [out, size=signature_size]uint8_t *signature, size_t signature_size);
}; };

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@ -33,12 +33,17 @@
#ifndef _ENCLAVE_H_ #ifndef _ENCLAVE_H_
#define _ENCLAVE_H_ #define _ENCLAVE_H_
#include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <stdint.h> #include <stdint.h>
#include <assert.h> #include <assert.h>
#include <stdio.h>
#include <sgx_error.h> #include <sgx_error.h>
int get_sealed_size();
int get_signature_size();
int get_public_key_size();
int get_private_key_size();
sgx_status_t public_key(const uint8_t *sealed, const size_t sealed_size, uint8_t *gx, uint8_t *gy); sgx_status_t public_key(const uint8_t *sealed, const size_t sealed_size, uint8_t *gx, uint8_t *gy);
sgx_status_t sign_firmware(const uint8_t *sealed, size_t sealed_size, uint8_t *data, size_t data_size, uint8_t *signature, size_t signature_size); sgx_status_t sign_firmware(const uint8_t *sealed, size_t sealed_size, uint8_t *data, size_t data_size, uint8_t *signature, size_t signature_size);