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Assignment-7-sgximpl #13

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saschato merged 62 commits from Assignment-7-sgximpl into Assignment-7 2024-07-08 11:03:28 +02:00
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3 changed files with 14 additions and 11 deletions
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21
Assignment 7 - SGX Hands-on/src/enclave/enclave.c
View file

@ -127,24 +127,27 @@ sgx_status_t unseal_key_pair(const uint8_t *sealed, sgx_ec256_private_t *private
return status; return status;
} }
sgx_status_t public_key(const uint8_t *sealed, const size_t sealed_size, uint8_t *gx, uint8_t *gy) { sgx_status_t get_public_key(const uint8_t *sealed, uint32_t sealed_size, uint8_t *gx, uint32_t gx_size, uint8_t *gy, uint32_t gy_size) {
// return if no sealed data provided // invalid parameter handling
if(sealed == NULL) if((sealed == NULL) || (sealed_size == 0)) {
return SGX_ERROR_UNEXPECTED; return SGX_ERROR_INVALID_PARAMETER;
}
// unseal public key // unseal public key
sgx_status_t status;
sgx_ec256_public_t public; sgx_ec256_public_t public;
if(unseal_key_pair(sealed, sealed_size, NULL, &public) != SGX_SUCCESS) { if((status = unseal_key_pair(sealed, NULL, &public)) != SGX_SUCCESS) {
return SGX_ERROR_UNEXPECTED; return status;
} }
// copy public key into return buffers // copy public key into return buffers
if((gx != NULL) && (gy != NULL)) { if((gx != NULL) && (gy != NULL)) {
memcpy(gx, public.gx, SGX_ECP256_KEY_SIZE); memcpy(gx, public.gx, SK_SIZE);
memcpy(gy, public.gy, SGX_ECP256_KEY_SIZE); memcpy(gy, public.gy, SK_SIZE);
} }
return SGX_SUCCESS; // return success
return status;
} }
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) {

2
Assignment 7 - SGX Hands-on/src/enclave/enclave.edl
View file

@ -44,7 +44,7 @@ enclave {
public int get_signature_size(); public int get_signature_size();
public int get_public_key_size(); public int get_public_key_size();
public int get_private_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 get_public_key([in, size=sealed_size]const uint8_t *sealed, uint32_t sealed_size, [out, size=gx_size]uint8_t *gx, uint32_t gx_size, [out, size=gx_size]uint8_t *gy, uint32_t gy_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); 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);
}; };

2
Assignment 7 - SGX Hands-on/src/enclave/enclave.h
View file

@ -44,7 +44,7 @@ int get_signature_size();
int get_public_key_size(); int get_public_key_size();
int get_private_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 get_public_key(const uint8_t *sealed, const uint32_t sealed_size, uint8_t *gx, uint32_t gx_size, uint8_t *gy, uint32_t gy_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); 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);
#endif /* !_ENCLAVE_H_ */ #endif /* !_ENCLAVE_H_ */