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Unverified Commit 4fcda5df authored by Stan Kladko's avatar Stan Kladko Committed by GitHub
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Merge pull request #136 from skalenetwork/SKALE-3067-remove-use-check 

Skale 3067 remove use check
parents 6502d7bc 4f68f132
Hide whitespace changes
Inline Side-by-side
Showing with 408 additions and 359 deletions
ECDSACrypto.cpp
View file @ 4fcda5df
......@@ -175,11 +175,8 @@ vector <string> ecdsaSignHash(const char *encryptedKeyHex, const char *hashHex,
string pubKeyStr = "";
shared_ptr<SGXException> exception = NULL;
if (!hex2carray(encryptedKeyHex, &decLen, encryptedKey.data())) {
exception = make_shared<SGXException>(INVALID_HEX, "Invalid encryptedKeyHex");
goto clean;
throw SGXException(INVALID_HEX, "Invalid encryptedKeyHex");
}
status = trustedEcdsaSignAES(eid, &errStatus,
......@@ -188,15 +185,14 @@ vector <string> ecdsaSignHash(const char *encryptedKeyHex, const char *hashHex,
signatureS.data(), &signatureV, base);
if (errStatus != 0) {
exception = make_shared<SGXException>(666, errMsg.data());
goto clean;
throw SGXException(666, errMsg.data());
}
if (status != SGX_SUCCESS) {
spdlog::error("failed to sign {}", status);
exception = make_shared<SGXException>(666, "failed to sign");
goto clean;
throw SGXException(666, "failed to sign");
}
signatureVector.at(0) = to_string(signatureV);
if (base == 16) {
signatureVector.at(1) = "0x" + string(signatureR.data());
......@@ -210,15 +206,16 @@ vector <string> ecdsaSignHash(const char *encryptedKeyHex, const char *hashHex,
pubKeyStr = getECDSAPubKey(encryptedKeyHex);
if (!verifyECDSASig(pubKeyStr, hashHex, signatureR.data(), signatureS.data(), base)) {
exception = make_shared<SGXException>(667, "ECDSA did not verify");
goto clean;
}
static uint64_t i = 0;
clean:
i++;
if (exception)
throw *exception;
if (i % 1000 == 0) {
if (!verifyECDSASig(pubKeyStr, hashHex, signatureR.data(), signatureS.data(), base)) {
throw SGXException(667, "ECDSA did not verify");
}
}
return signatureVector;
}
Log.h
View file @ 4fcda5df
......@@ -73,7 +73,9 @@ public:
static void handleSGXException(Json::Value &_result, SGXException &_e);
};
#define INIT_RESULT(__RESULT__) Json::Value __RESULT__; __RESULT__["status"] = 0; __RESULT__["errorMessage"] = "";
#define INIT_RESULT(__RESULT__) Json::Value __RESULT__; __RESULT__["status"] = 0; __RESULT__["errorMessage"] = \
"Server error. Please see server log.";
#define RESULT_SUCCESS(__RESULT__) ; __RESULT__["status"] = 0; __RESULT__["errorMessage"] = "";
#define HANDLE_SGX_EXCEPTION(_RESULT_) catch (SGXException &__e) { Log::handleSGXException(_RESULT_, __e);} \
catch (exception &__e) {spdlog::error(__e.what()); _RESULT_["status"] = 1; _RESULT_["errorMessage"] = __e.what();}
......
secure_enclave/EnclaveCommon.cpp
View file @ 4fcda5df
......@@ -135,11 +135,16 @@ libff::alt_bn128_Fr *keyFromString(const char *_keyStringHex) {
int inited = 0;
domain_parameters curve;
void enclave_init() {
if (inited == 1)
return;
inited = 1;
libff::init_alt_bn128_params();
curve = domain_parameters_init();
domain_parameters_load_curve(curve, secp256k1);
}
bool enclave_sign(const char *_keyString, const char *_hashXString, const char *_hashYString,
......
secure_enclave/EnclaveCommon.h
View file @ 4fcda5df
......@@ -21,6 +21,11 @@
@date 2019
*/
#include "DomainParameters.h"
#include "Signature.h"
#include "Curves.h"
#ifndef SGXWALLET_ENCLAVECOMMON_H
#define SGXWALLET_ENCLAVECOMMON_H
......@@ -59,5 +64,7 @@ extern uint32_t globalLogLevel_;
extern unsigned char* globalRandom;
extern domain_parameters curve;
#endif //SGXWALLET_ENCLAVECOMMON_H
secure_enclave/secure_enclave.c
View file @ 4fcda5df
......@@ -56,6 +56,27 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "EnclaveConstants.h"
#include "EnclaveCommon.h"
#define SAFE_FREE(__X__) if (!__X__) {free(__X__); __X__ = NULL;}
#define SAFE_CHAR_BUF(__X__, __Y__) ;char __X__ [ __Y__ ]; memset(__X__, 0, __Y__);
#define STRINGIFY(x) #x
#define TOSTRING(x) STRINGIFY(x)
#define CHECK_STATE(_EXPRESSION_) \
if (!(_EXPRESSION_)) { \
LOG_ERROR("State check failed::");LOG_ERROR(#_EXPRESSION_); \
LOG_ERROR((const char*) __FILE__); \
snprintf(errString, BUF_LEN, "State check failed. Check log."); \
*errStatus = -1; \
return;}
#define CHECK_STATE_CLEAN(_EXPRESSION_) \
if (!(_EXPRESSION_)) { \
LOG_ERROR("State check failed::");LOG_ERROR(#_EXPRESSION_); \
LOG_ERROR(__FILE__); LOG_ERROR(__LINE__); \
snprintf(errString, BUF_LEN, "State check failed. Check log."); \
*errStatus = -1; \
goto clean;}
void *(*gmp_realloc_func)(void *, size_t, size_t);
......@@ -129,24 +150,6 @@ void *reallocate_function(void *ptr, size_t osize, size_t nsize) {
return (void *) nptr;
}
#define STRINGIFY(x) #x
#define TOSTRING(x) STRINGIFY(x)
#define CHECK_STATE(_EXPRESSION_) \
if (!(_EXPRESSION_)) { \
LOG_ERROR("State check failed::");LOG_ERROR(#_EXPRESSION_); \
LOG_ERROR((const char*) __FILE__); \
snprintf(errString, BUF_LEN, "State check failed. Check log."); \
*errStatus = -1; \
return;}
#define CHECK_STATE_CLEAN(_EXPRESSION_) \
if (!(_EXPRESSION_)) { \
LOG_ERROR("State check failed::");LOG_ERROR(#_EXPRESSION_); \
LOG_ERROR(__FILE__); LOG_ERROR(__LINE__); \
snprintf(errString, BUF_LEN, "State check failed. Check log."); \
*errStatus = -1; \
goto clean;}
void get_global_random(unsigned char *_randBuff, uint64_t _size) {
......@@ -173,11 +176,6 @@ void get_global_random(unsigned char *_randBuff, uint64_t _size) {
}
#define SAFE_FREE(__X__) if (!__X__) {free(__X__); __X__ = NULL;}
#define SAFE_CHAR_BUF(__X__, __Y__) ;char __X__ [ __Y__ ]; memset(__X__, 0, __Y__);
void trustedGenerateEcdsaKey(int *errStatus, char *errString,
uint8_t *encryptedPrivateKey, uint32_t *enc_len, char *pub_key_x, char *pub_key_y) {
......@@ -187,10 +185,9 @@ void trustedGenerateEcdsaKey(int *errStatus, char *errString,
*errStatus = UNKNOWN_ERROR;
CHECK_STATE(encryptedPrivateKey);
CHECK_STATE(pub_key_x); CHECK_STATE(pub_key_y);
CHECK_STATE(pub_key_x);
CHECK_STATE(pub_key_y);
domain_parameters curve = domain_parameters_init();
domain_parameters_load_curve(curve, secp256k1);
SAFE_CHAR_BUF(rand_char, 32);
......@@ -209,9 +206,7 @@ void trustedGenerateEcdsaKey(int *errStatus, char *errString,
signature_extract_public_key(Pkey, skey, curve);
int len = mpz_sizeinbase(Pkey->x, ECDSA_SKEY_BASE) + 2;
SAFE_CHAR_BUF(arr_x,len);
SAFE_CHAR_BUF(arr_x, BUF_LEN);
mpz_get_str(arr_x, ECDSA_SKEY_BASE, Pkey->x);
int n_zeroes = 64 - strlen(arr_x);
......@@ -221,7 +216,7 @@ void trustedGenerateEcdsaKey(int *errStatus, char *errString,
strncpy(pub_key_x + n_zeroes, arr_x, 1024 - n_zeroes);
SAFE_CHAR_BUF(arr_y,mpz_sizeinbase(Pkey->y, ECDSA_SKEY_BASE) + 2);
SAFE_CHAR_BUF(arr_y, BUF_LEN);
mpz_get_str(arr_y, ECDSA_SKEY_BASE, Pkey->y);
n_zeroes = 64 - strlen(arr_y);
for (int i = 0; i < n_zeroes; i++) {
......@@ -229,7 +224,7 @@ void trustedGenerateEcdsaKey(int *errStatus, char *errString,
}
strncpy(pub_key_y + n_zeroes, arr_y, 1024 - n_zeroes);
SAFE_CHAR_BUF(skey_str, mpz_sizeinbase(skey, ECDSA_SKEY_BASE) + 2);
SAFE_CHAR_BUF(skey_str, BUF_LEN);
mpz_get_str(skey_str, ECDSA_SKEY_BASE, skey);
snprintf(errString, BUF_LEN, "skey len is %d\n", strlen(skey_str));
......@@ -252,7 +247,6 @@ void trustedGenerateEcdsaKey(int *errStatus, char *errString,
mpz_clear(seed);
mpz_clear(skey);
domain_parameters_clear(curve);
point_clear(Pkey);
}
......@@ -267,58 +261,45 @@ void trustedGetPublicEcdsaKey(int *errStatus, char *errString,
*errString = 0;
*errStatus = UNKNOWN_ERROR;
domain_parameters curve = domain_parameters_init();
domain_parameters_load_curve(curve, secp256k1);
mpz_t privateKeyMpz;
mpz_init(privateKeyMpz);
point Pkey = point_init();
point Pkey_test = point_init();
SAFE_CHAR_BUF(skey, ECDSA_SKEY_LEN);
sgx_status_t status = sgx_unseal_data(
(const sgx_sealed_data_t *) encryptedPrivateKey, NULL, 0, (uint8_t *) skey, &dec_len);
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "sgx_unseal_data failed with status %d", status);
*errStatus = status;
domain_parameters_clear(curve);
LOG_ERROR(errString);
return;
}
mpz_t privateKeyMpz;
mpz_init(privateKeyMpz);
if (mpz_set_str(privateKeyMpz, skey, ECDSA_SKEY_BASE) == -1) {
snprintf(errString, BUF_LEN, "wrong string to init private key");
LOG_ERROR(errString);
*errStatus = -10;
mpz_clear(privateKeyMpz);
domain_parameters_clear(curve);
return;
goto clean;
}
//Public key
point Pkey = point_init();
signature_extract_public_key(Pkey, privateKeyMpz, curve);
point Pkey_test = point_init();
point_multiplication(Pkey_test, privateKeyMpz, curve->G, curve);
if (!point_cmp(Pkey, Pkey_test)) {
snprintf(errString, BUF_LEN, "Points are not equal");
LOG_ERROR(errString);
*errStatus = -11;
mpz_clear(privateKeyMpz);
domain_parameters_clear(curve);
point_clear(Pkey);
point_clear(Pkey_test);
return;
goto clean;
}
int len = mpz_sizeinbase(Pkey->x, ECDSA_SKEY_BASE) + 2;
SAFE_CHAR_BUF(arr_x,len);
SAFE_CHAR_BUF(arr_x, BUF_LEN);
mpz_get_str(arr_x, ECDSA_SKEY_BASE, Pkey->x);
int n_zeroes = 64 - strlen(arr_x);
......@@ -328,7 +309,7 @@ void trustedGetPublicEcdsaKey(int *errStatus, char *errString,
strncpy(pub_key_x + n_zeroes, arr_x, 1024 - n_zeroes);
SAFE_CHAR_BUF(arr_y, mpz_sizeinbase(Pkey->y, ECDSA_SKEY_BASE) + 2);
SAFE_CHAR_BUF(arr_y, BUF_LEN);
mpz_get_str(arr_y, ECDSA_SKEY_BASE, Pkey->y);
n_zeroes = 64 - strlen(arr_y);
......@@ -339,8 +320,8 @@ void trustedGetPublicEcdsaKey(int *errStatus, char *errString,
*errStatus = 0;
clean:
mpz_clear(privateKeyMpz);
domain_parameters_clear(curve);
point_clear(Pkey);
point_clear(Pkey_test);
}
......@@ -363,8 +344,6 @@ void trustedEcdsaSign(int *errStatus, char *errString, uint8_t *encryptedPrivate
signature sign = signature_init();
domain_parameters curve = domain_parameters_init();
domain_parameters_load_curve(curve, secp256k1);
point publicKey = point_init();
if (strnlen(hash, 64) > 64) {
......@@ -384,12 +363,6 @@ void trustedEcdsaSign(int *errStatus, char *errString, uint8_t *encryptedPrivate
goto clean;
}
if (!encryptedPrivateKey) {
*errStatus = 3;
snprintf(errString, BUF_LEN, "NULL encrypted ECDSA private key");
LOG_ERROR(errString);
goto clean;
}
sgx_status_t status = sgx_unseal_data(
(const sgx_sealed_data_t *) encryptedPrivateKey, NULL, 0, (uint8_t *) privateKey, &dec_len);
......@@ -438,12 +411,9 @@ void trustedEcdsaSign(int *errStatus, char *errString, uint8_t *encryptedPrivate
mpz_clear(privateKeyMpz);
mpz_clear(msgMpz);
domain_parameters_clear(curve);
point_clear(publicKey);
signature_free(sign);
return;
}
......@@ -456,14 +426,13 @@ void trustedEncryptKey(int *errStatus, char *errString, const char *key,
*errString = 0;
*errStatus = UNKNOWN_ERROR;
memset(errString, 0, BUF_LEN);
uint32_t sealedLen = sgx_calc_sealed_data_size(0, ECDSA_SKEY_LEN);
if (sealedLen > BUF_LEN) {
*errStatus = ENCRYPTED_KEY_TOO_LONG;
snprintf(errString, BUF_LEN, "sealedLen > MAX_ENCRYPTED_KEY_LENGTH");
return;
LOG_ERROR(errString);
goto clean;
}
memset(encryptedPrivateKey, 0, BUF_LEN);
......@@ -484,24 +453,30 @@ void trustedEncryptKey(int *errStatus, char *errString, const char *key,
if (*errStatus != 0) {
snprintf(errString + strlen(errString), BUF_LEN, ":trustedDecryptKey failed");
return;
LOG_ERROR(errString);
goto clean;
}
uint64_t decryptedKeyLen = strnlen(decryptedKey, MAX_KEY_LENGTH);
if (decryptedKeyLen == MAX_KEY_LENGTH) {
snprintf(errString, BUF_LEN, "Decrypted key is not null terminated");
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = -8;
if (strncmp(key, decryptedKey, MAX_KEY_LENGTH) != 0) {
snprintf(errString, BUF_LEN, "Decrypted key does not match original key");
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
clean:
;
}
void trustedDecryptKey(int *errStatus, char *errString, uint8_t *encryptedPrivateKey,
......@@ -520,12 +495,14 @@ void trustedDecryptKey(int *errStatus, char *errString, uint8_t *encryptedPrivat
if (status != SGX_SUCCESS) {
*errStatus = status;
snprintf(errString, BUF_LEN, "sgx_unseal_data failed with status %d", status);
return;
LOG_ERROR(errString);
goto clean;
}
if (decLen > MAX_KEY_LENGTH) {
snprintf(errString, BUF_LEN, "wrong decLen");
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = -10;
......@@ -534,10 +511,14 @@ void trustedDecryptKey(int *errStatus, char *errString, uint8_t *encryptedPrivat
if (keyLen == MAX_KEY_LENGTH) {
snprintf(errString, BUF_LEN, "Key is not null terminated");
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
clean:
;
}
void trustedBlsSignMessage(int *errStatus, char *errString, uint8_t *encryptedPrivateKey,
......@@ -553,14 +534,14 @@ void trustedBlsSignMessage(int *errStatus, char *errString, uint8_t *encryptedPr
CHECK_STATE(_hashY);
CHECK_STATE(signature);
SAFE_CHAR_BUF(key, BUF_LEN);
SAFE_CHAR_BUF(sig, BUF_LEN);
SAFE_CHAR_BUF(key, BUF_LEN);SAFE_CHAR_BUF(sig, BUF_LEN);
trustedDecryptKey(errStatus, errString, encryptedPrivateKey, enc_len, key);
if (*errStatus != 0) {
strncpy(signature, errString, BUF_LEN);
return;
LOG_ERROR(errString);
goto clean;
}
enclave_sign(key, _hashX, _hashY, sig);
......@@ -569,10 +550,14 @@ void trustedBlsSignMessage(int *errStatus, char *errString, uint8_t *encryptedPr
if (strnlen(signature, BUF_LEN) < 10) {
*errStatus = -1;
return;
strncpy(errString, "signature too short", BUF_LEN);
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
clean:
;
}
void trustedGenDkgSecret(int *errStatus, char *errString, uint8_t *encrypted_dkg_secret, uint32_t *enc_len, size_t _t) {
......@@ -587,7 +572,9 @@ void trustedGenDkgSecret(int *errStatus, char *errString, uint8_t *encrypted_dkg
if (gen_dkg_poly(dkg_secret, _t) != 0) {
*errStatus = -1;
return;
strncpy(errString, "Couldnt generate poly", BUF_LEN);
LOG_ERROR(errString);
goto clean;
}
uint32_t sealedLen = sgx_calc_sealed_data_size(0, DKG_BUFER_LENGTH);
......@@ -597,14 +584,17 @@ void trustedGenDkgSecret(int *errStatus, char *errString, uint8_t *encrypted_dkg
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "SGX seal data failed");
LOG_ERROR(errString);
*errStatus = status;
return;
goto clean;
}
*enc_len = sealedLen;
*errStatus = 0;
clean:
;
}
void
......@@ -623,13 +613,17 @@ trustedDecryptDkgSecret(int *errStatus, char *errString, uint8_t *encrypted_dkg_
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "sgx_unseal_data - encrypted_dkg_secret failed with status %d", status);
LOG_ERROR(errString);
*errStatus = status;
return;
goto clean;
}
*dec_len = decr_len;
*errStatus = 0;
clean:
;
}
void trustedGetSecretShares(int *errStatus, char *errString, uint8_t *encrypted_dkg_secret, uint32_t *dec_len,
......@@ -652,7 +646,8 @@ void trustedGetSecretShares(int *errStatus, char *errString, uint8_t *encrypted_
if (*errStatus != 0) {
snprintf(errString, BUF_LEN, "sgx_unseal_data - encrypted_dkg_secret failed with status %d", *errStatus);
return;
LOG_ERROR(errString);
goto clean;
}
*dec_len = decr_len;
......@@ -660,6 +655,9 @@ void trustedGetSecretShares(int *errStatus, char *errString, uint8_t *encrypted_
calc_secret_shares(decrypted_dkg_secret, secret_shares, _t, _n);
*errStatus = 0;
clean:
;
}
void trustedGetPublicShares(int *errStatus, char *errString, uint8_t *encrypted_dkg_secret, uint32_t enc_len,
......@@ -675,24 +673,28 @@ void trustedGetPublicShares(int *errStatus, char *errString, uint8_t *encrypted_
*errString = 0;
*errStatus = UNKNOWN_ERROR;
SAFE_CHAR_BUF(decrypted_dkg_secret,DKG_MAX_SEALED_LEN);
SAFE_CHAR_BUF(decrypted_dkg_secret, DKG_MAX_SEALED_LEN);
uint32_t decr_len;
trustedDecryptDkgSecret(errStatus, errString, (uint8_t *) encrypted_dkg_secret, (uint8_t *) decrypted_dkg_secret,
&decr_len);
if (*errStatus != 0) {
snprintf(errString, BUF_LEN, "trustedDecryptDkgSecret failed with status %d", *errStatus);
return;
LOG_ERROR(errString);
goto clean;
}
if (calc_public_shares(decrypted_dkg_secret, public_shares, _t) != 0) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "t does not match polynomial in db");
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
clean:
;
}
void trustedSetEncryptedDkgPoly(int *errStatus, char *errString, uint8_t *encrypted_poly) {
......@@ -712,10 +714,14 @@ void trustedSetEncryptedDkgPoly(int *errStatus, char *errString, uint8_t *encryp
if (status != SGX_SUCCESS) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "sgx_unseal_data - encrypted_poly failed with status %d", status);
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
clean:
;
}
void trustedGetEncryptedSecretShare(int *errStatus, char *errString, uint8_t *encrypted_skey, uint32_t *dec_len,
......@@ -734,15 +740,16 @@ void trustedGetEncryptedSecretShare(int *errStatus, char *errString, uint8_t *en
*errString = 0;
*errStatus = UNKNOWN_ERROR;
SAFE_CHAR_BUF(skey, ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(pub_key_x, BUF_LEN);
SAFE_CHAR_BUF(pub_key_y,BUF_LEN);
SAFE_CHAR_BUF(skey, ECDSA_SKEY_LEN);SAFE_CHAR_BUF(pub_key_x, BUF_LEN);SAFE_CHAR_BUF(pub_key_y, BUF_LEN);
uint32_t enc_len;
trustedGenerateEcdsaKey(errStatus, errString, encrypted_skey, &enc_len, pub_key_x, pub_key_y);
if (*errStatus != 0) {
return;
snprintf(errString, BUF_LEN, "sgx_unseal_data - encrypted_poly failed with status %d", errStatus);
LOG_ERROR(errString);
goto clean;
}
*dec_len = enc_len;
......@@ -752,42 +759,41 @@ void trustedGetEncryptedSecretShare(int *errStatus, char *errString, uint8_t *en
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "sgx_unseal_data failed - encrypted_skey with status %d", status);
LOG_ERROR(errString);
*errStatus = status;
return;
goto clean;
}
SAFE_CHAR_BUF(common_key,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(common_key, ECDSA_SKEY_LEN);
gen_session_key(skey, pub_keyB, common_key);
SAFE_CHAR_BUF(s_share,ECDSA_SKEY_LEN);
gen_session_key(skey, pub_keyB, common_key);SAFE_CHAR_BUF(s_share, ECDSA_SKEY_LEN);
if (calc_secret_share(getThreadLocalDecryptedDkgPoly(), s_share, _t, _n, ind) != 0) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "\nt does not match poly degree\n");
return;
LOG_ERROR(errString);
goto clean;
}
if (calc_secret_shareG2(s_share, s_shareG2) != 0) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "invalid decr secret share\n");
return;
LOG_ERROR(errString);
goto clean;
}
SAFE_CHAR_BUF(cypher,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(cypher, ECDSA_SKEY_LEN);
xor_encrypt(common_key, s_share, cypher);
if (cypher == NULL) {
*errStatus = 1;
snprintf(errString, BUF_LEN, "invalid common_key");
return;
}
strncpy(result_str, cypher, strlen(cypher));
strncpy(result_str + strlen(cypher), pub_key_x, strlen(pub_key_x));
strncpy(result_str + strlen(pub_key_x) + strlen(pub_key_y), pub_key_y, strlen(pub_key_y));
*errStatus = 0;
clean:
;
}
void trustedComplaintResponse(int *errStatus, char *errString, uint8_t *encrypted_dkg_secret,
......@@ -808,12 +814,16 @@ void trustedComplaintResponse(int *errStatus, char *errString, uint8_t *encrypte
if (*errStatus != 0) {
snprintf(errString, BUF_LEN, "sgx_unseal_data - encrypted_dkg_secret failed with status %d", *errStatus);
return;
LOG_ERROR(errString);
goto clean;
}
calc_secret_shareG2_old(decrypted_dkg_secret, s_shareG2, _t, ind1);
*errStatus = 0;
clean:
;
}
void trustedDkgVerify(int *errStatus, char *errString, const char *public_shares, const char *s_share,
......@@ -828,6 +838,9 @@ void trustedDkgVerify(int *errStatus, char *errString, const char *public_shares
*errString = 0;
*errStatus = UNKNOWN_ERROR;
mpz_t s;
mpz_init(s);
SAFE_CHAR_BUF(skey, ECDSA_SKEY_LEN);
sgx_status_t status = sgx_unseal_data(
......@@ -835,7 +848,8 @@ void trustedDkgVerify(int *errStatus, char *errString, const char *public_shares
if (status != SGX_SUCCESS) {
*errStatus = status;
snprintf(errString, BUF_LEN, "sgx_unseal_key failed with status %d", status);
return;
LOG_ERROR(errString);
goto clean;
}
SAFE_CHAR_BUF(encr_sshare, ECDSA_SKEY_LEN);
......@@ -854,18 +868,19 @@ void trustedDkgVerify(int *errStatus, char *errString, const char *public_shares
xor_decrypt(common_key, encr_sshare, decr_sshare);
mpz_t s;
mpz_init(s);
if (mpz_set_str(s, decr_sshare, 16) == -1) {
*errStatus = 1;
snprintf(errString, BUF_LEN, "invalid decr secret share");
mpz_clear(s);
return;
LOG_ERROR(errString);
goto clean;
}
*result = Verification(public_shares, s, _t, _ind);
*errStatus = 0;
clean:
mpz_clear(s);
}
......@@ -887,19 +902,31 @@ void trustedCreateBlsKey(int *errStatus, char *errString, const char *s_shares,
SAFE_CHAR_BUF(skey, ECDSA_SKEY_LEN);
mpz_t sum;
mpz_init(sum);
mpz_set_ui(sum, 0);
mpz_t q;
mpz_init(q);
mpz_set_str(q, "21888242871839275222246405745257275088548364400416034343698204186575808495617", 10);
mpz_set_str(q, "21888242871839275222246405745257275088548364400416034343698204186575808495617", 10);
mpz_t bls_key;
mpz_init(bls_key);
sgx_status_t status = sgx_unseal_data(
(const sgx_sealed_data_t *) encryptedPrivateKey, NULL, 0, (uint8_t *) skey, &key_len);
if (status != SGX_SUCCESS) {
*errStatus = 1;
snprintf(errString, BUF_LEN, "sgx_unseal_key failed with status %d", status);
return;
LOG_ERROR(errString);
goto clean;
}
int num_shares = strlen(s_shares) / 192;
mpz_t sum;
mpz_init(sum);
mpz_set_ui(sum, 0);
for (int i = 0; i < num_shares; i++) {
......@@ -908,16 +935,16 @@ void trustedCreateBlsKey(int *errStatus, char *errString, const char *s_shares,
strncpy(encr_sshare, s_shares + 192 * i, 64);
encr_sshare[64] = 0;
SAFE_CHAR_BUF(s_share,193);
SAFE_CHAR_BUF(s_share, 193);
strncpy(s_share, s_shares + 192 * i, 192);
s_share[192] = 0;
SAFE_CHAR_BUF(common_key,65);
SAFE_CHAR_BUF(common_key, 65);
session_key_recover(skey, s_share, common_key);
common_key[64] = 0;
SAFE_CHAR_BUF(decr_sshare,65);
SAFE_CHAR_BUF(decr_sshare, 65);
xor_decrypt(common_key, encr_sshare, decr_sshare);
mpz_t decr_secret_share;
......@@ -925,22 +952,15 @@ void trustedCreateBlsKey(int *errStatus, char *errString, const char *s_shares,
if (mpz_set_str(decr_secret_share, decr_sshare, 16) == -1) {
*errStatus = 1;
snprintf(errString, BUF_LEN, "invalid decrypted secret share");
LOG_ERROR(errString);
mpz_clear(decr_secret_share);
mpz_clear(sum);
return;
goto clean;
}
mpz_addmul_ui(sum, decr_secret_share, 1);
mpz_clear(decr_secret_share);
}
mpz_t q;
mpz_init(q);
mpz_set_str(q, "21888242871839275222246405745257275088548364400416034343698204186575808495617", 10);
mpz_t bls_key;
mpz_init(bls_key);
mpz_mod(bls_key, sum, q);
SAFE_CHAR_BUF(key_share, BUF_LEN);
......@@ -953,15 +973,15 @@ void trustedCreateBlsKey(int *errStatus, char *errString, const char *s_shares,
if (status != SGX_SUCCESS) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "seal bls private key failed with status %d ", status);
mpz_clear(bls_key);
mpz_clear(sum);
mpz_clear(q);
return;
LOG_ERROR(errString);
goto clean;
}
*enc_bls_key_len = sealedLen;
*errStatus = 0;
clean:
mpz_clear(bls_key);
mpz_clear(sum);
mpz_clear(q);
......@@ -981,7 +1001,7 @@ void trustedGetBlsPubKey(int *errStatus, char *errString, uint8_t *encryptedPriv
*errStatus = UNKNOWN_ERROR;
SAFE_CHAR_BUF(skey_hex,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(skey_hex, ECDSA_SKEY_LEN);
uint32_t len = key_len;
......@@ -990,16 +1010,21 @@ void trustedGetBlsPubKey(int *errStatus, char *errString, uint8_t *encryptedPriv
if (status != SGX_SUCCESS) {
*errStatus = 1;
snprintf(errString, BUF_LEN, "sgx_unseal_data failed with status %d", status);
return;
LOG_ERROR(errString);
goto clean;
}
if (calc_bls_public_key(skey_hex, bls_pub_key) != 0) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "could not calculate bls public key");
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
clean:
;
}
void trustedGenerateSEK(int *errStatus, char *errString,
......@@ -1015,9 +1040,7 @@ void trustedGenerateSEK(int *errStatus, char *errString,
*errString = 0;
*errStatus = UNKNOWN_ERROR;
uint8_t SEK_raw[SGX_AESGCM_KEY_SIZE];
sgx_read_rand(SEK_raw, SGX_AESGCM_KEY_SIZE);
SAFE_CHAR_BUF(SEK_raw, SGX_AESGCM_KEY_SIZE);;
uint32_t hex_aes_key_length = SGX_AESGCM_KEY_SIZE * 2;
carray2Hex(SEK_raw, SGX_AESGCM_KEY_SIZE, SEK_hex);
......@@ -1033,12 +1056,15 @@ void trustedGenerateSEK(int *errStatus, char *errString,
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "seal SEK failed");
*errStatus = status;
return;
LOG_ERROR(errString);
goto clean;
}
*enc_len = sealedLen;
*errStatus = 0;
clean:
;
}
void trustedSetSEK(int *errStatus, char *errString, uint8_t *encrypted_SEK, uint64_t encr_len) {
......@@ -1049,23 +1075,24 @@ void trustedSetSEK(int *errStatus, char *errString, uint8_t *encrypted_SEK, uint
CHECK_STATE(encrypted_SEK);
uint8_t aes_key_hex[SGX_AESGCM_KEY_SIZE * 2];
memset(aes_key_hex, 0, SGX_AESGCM_KEY_SIZE * 2);
SAFE_CHAR_BUF(aes_key_hex, BUF_LEN);
sgx_status_t status = sgx_unseal_data(
(const sgx_sealed_data_t *) encrypted_SEK, NULL, 0, aes_key_hex, &encr_len);
if (status != SGX_SUCCESS) {
*errStatus = status;
snprintf(errString, BUF_LEN, "sgx unseal SEK failed with status %d", status);
return;
LOG_ERROR(errString);
goto clean;
}
uint64_t len;
hex2carray(aes_key_hex, &len, (uint8_t *) AES_key);
*errStatus = 0;
clean:
;
}
void trustedSetSEK_backup(int *errStatus, char *errString,
......@@ -1088,12 +1115,16 @@ void trustedSetSEK_backup(int *errStatus, char *errString,
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "seal SEK failed with status %d", status);
*errStatus = status;
return;
LOG_ERROR(errString);
goto clean;
}
*enc_len = sealedLen;
*errStatus = 0;
clean:
;
}
void trustedGenerateEcdsaKeyAES(int *errStatus, char *errString,
......@@ -1104,20 +1135,16 @@ void trustedGenerateEcdsaKeyAES(int *errStatus, char *errString,
*errStatus = UNKNOWN_ERROR;
CHECK_STATE(encryptedPrivateKey);
CHECK_STATE(pub_key_x); CHECK_STATE(pub_key_y);
domain_parameters curve = domain_parameters_init();
domain_parameters_load_curve(curve, secp256k1);
CHECK_STATE(pub_key_x);
CHECK_STATE(pub_key_y);
unsigned char *rand_char = (unsigned char *) calloc(32, 1);
SAFE_CHAR_BUF(rand_char, 32);
get_global_random(rand_char, 32);
mpz_t seed;
mpz_init(seed);
mpz_import(seed, 32, 1, sizeof(rand_char[0]), 0, 0, rand_char);
free(rand_char);
mpz_t skey;
mpz_init(skey);
mpz_mod(skey, seed, curve->p);
......@@ -1128,8 +1155,7 @@ void trustedGenerateEcdsaKeyAES(int *errStatus, char *errString,
signature_extract_public_key(Pkey, skey, curve);
int len = mpz_sizeinbase(Pkey->x, ECDSA_SKEY_BASE) + 2;
char arr_x[len];
int len = mpz_sizeinbase(Pkey->x, ECDSA_SKEY_BASE) + 2;SAFE_CHAR_BUF(arr_x, BUF_LEN);
mpz_get_str(arr_x, ECDSA_SKEY_BASE, Pkey->x);
int n_zeroes = 64 - strlen(arr_x);
for (int i = 0; i < n_zeroes; i++) {
......@@ -1138,7 +1164,7 @@ void trustedGenerateEcdsaKeyAES(int *errStatus, char *errString,
strncpy(pub_key_x + n_zeroes, arr_x, 1024 - n_zeroes);
char arr_y[mpz_sizeinbase(Pkey->y, ECDSA_SKEY_BASE) + 2];
SAFE_CHAR_BUF(arr_y, BUF_LEN);
mpz_get_str(arr_y, ECDSA_SKEY_BASE, Pkey->y);
n_zeroes = 64 - strlen(arr_y);
for (int i = 0; i < n_zeroes; i++) {
......@@ -1146,8 +1172,7 @@ void trustedGenerateEcdsaKeyAES(int *errStatus, char *errString,
}
strncpy(pub_key_y + n_zeroes, arr_y, 1024 - n_zeroes);
SAFE_CHAR_BUF(skey_str,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(arr_skey_str,mpz_sizeinbase(skey, ECDSA_SKEY_BASE) + 2);
SAFE_CHAR_BUF(skey_str, ECDSA_SKEY_LEN);SAFE_CHAR_BUF(arr_skey_str, mpz_sizeinbase(skey, ECDSA_SKEY_BASE) + 2);
mpz_get_str(arr_skey_str, ECDSA_SKEY_BASE, skey);
n_zeroes = 64 - strlen(arr_skey_str);
for (int i = 0; i < n_zeroes; i++) {
......@@ -1162,12 +1187,8 @@ void trustedGenerateEcdsaKeyAES(int *errStatus, char *errString,
if (stat != 0) {
snprintf(errString, BUF_LEN, "ecdsa private key encryption failed");
*errStatus = stat;
mpz_clear(skey);
domain_parameters_clear(curve);
point_clear(Pkey);
return;
LOG_ERROR(errString);
goto clean;
}
*enc_len = strlen(skey_str) + SGX_AESGCM_MAC_SIZE + SGX_AESGCM_IV_SIZE;
......@@ -1175,20 +1196,16 @@ void trustedGenerateEcdsaKeyAES(int *errStatus, char *errString,
stat = AES_decrypt(encryptedPrivateKey, *enc_len, skey_str, ECDSA_SKEY_LEN);
if (stat != 0) {
snprintf(errString + 19 + strlen(skey_str), BUF_LEN, "ecdsa private key decr failed with status %d", stat);
snprintf(errString, BUF_LEN, "ecdsa private key decr failed with status %d", stat);
*errStatus = stat;
mpz_clear(skey);
domain_parameters_clear(curve);
point_clear(Pkey);
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
clean:
mpz_clear(skey);
domain_parameters_clear(curve);
point_clear(Pkey);
}
......@@ -1200,12 +1217,18 @@ void trustedGetPublicEcdsaKeyAES(int *errStatus, char *errString,
*errStatus = UNKNOWN_ERROR;
CHECK_STATE(encryptedPrivateKey);
CHECK_STATE(pub_key_x); CHECK_STATE(pub_key_y);
CHECK_STATE(pub_key_x);
CHECK_STATE(pub_key_y);
domain_parameters curve = domain_parameters_init();
domain_parameters_load_curve(curve, secp256k1);
SAFE_CHAR_BUF(skey,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(skey, ECDSA_SKEY_LEN);
mpz_t privateKeyMpz;
mpz_init(privateKeyMpz);
//Public key
point Pkey = point_init();
int status = AES_decrypt(encryptedPrivateKey, enc_len, skey, ECDSA_SKEY_LEN);
skey[enc_len - SGX_AESGCM_MAC_SIZE - SGX_AESGCM_IV_SIZE] = '\0';
......@@ -1213,28 +1236,19 @@ void trustedGetPublicEcdsaKeyAES(int *errStatus, char *errString,
if (status != 0) {
snprintf(errString, BUF_LEN, "AES_decrypt failed with status %d", status);
*errStatus = status;
domain_parameters_clear(curve);
return;
LOG_ERROR(errString);
goto clean;
}
strncpy(errString, skey, 1024);
mpz_t privateKeyMpz;
mpz_init(privateKeyMpz);
if (mpz_set_str(privateKeyMpz, skey, ECDSA_SKEY_BASE) == -1) {
snprintf(errString, BUF_LEN, "wrong string to init private key");
LOG_ERROR(errString);
*errStatus = -10;
mpz_clear(privateKeyMpz);
domain_parameters_clear(curve);
return;
goto clean;
}
//Public key
point Pkey = point_init();
signature_extract_public_key(Pkey, privateKeyMpz, curve);
......@@ -1243,19 +1257,12 @@ void trustedGetPublicEcdsaKeyAES(int *errStatus, char *errString,
if (!point_cmp(Pkey, Pkey_test)) {
snprintf(errString, BUF_LEN, "Points are not equal");
LOG_ERROR(errString);
*errStatus = -11;
mpz_clear(privateKeyMpz);
domain_parameters_clear(curve);
point_clear(Pkey);
point_clear(Pkey_test);
return;
goto clean;
}
int len = mpz_sizeinbase(Pkey->x, ECDSA_SKEY_BASE) + 2;
char arr_x[len];
SAFE_CHAR_BUF(arr_x, BUF_LEN);
mpz_get_str(arr_x, ECDSA_SKEY_BASE, Pkey->x);
int n_zeroes = 64 - strlen(arr_x);
......@@ -1265,8 +1272,9 @@ void trustedGetPublicEcdsaKeyAES(int *errStatus, char *errString,
strncpy(pub_key_x + n_zeroes, arr_x, 1024 - n_zeroes);
char arr_y[mpz_sizeinbase(Pkey->y, ECDSA_SKEY_BASE) + 2];
SAFE_CHAR_BUF(arr_y, BUF_LEN);
mpz_get_str(arr_y, ECDSA_SKEY_BASE, Pkey->y);
n_zeroes = 64 - strlen(arr_y);
for (int i = 0; i < n_zeroes; i++) {
pub_key_y[i] = '0';
......@@ -1275,14 +1283,13 @@ void trustedGetPublicEcdsaKeyAES(int *errStatus, char *errString,
*errStatus = 0;
clean:
mpz_clear(privateKeyMpz);
domain_parameters_clear(curve);
point_clear(Pkey);
point_clear(Pkey_test);
}
static uint64_t sigCounter = 0;
static domain_parameters ecdsaCurve = NULL;
void trustedEcdsaSignAES(int *errStatus, char *errString, uint8_t *encryptedPrivateKey, uint32_t enc_len,
......@@ -1297,50 +1304,41 @@ void trustedEcdsaSignAES(int *errStatus, char *errString, uint8_t *encryptedPriv
CHECK_STATE(sigR);
CHECK_STATE(sigS);
if (!ecdsaCurve) {
ecdsaCurve = domain_parameters_init();
domain_parameters_load_curve(ecdsaCurve, secp256k1);
}
SAFE_CHAR_BUF(skey, ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(skey,ECDSA_SKEY_LEN);
mpz_t privateKeyMpz;
mpz_init(privateKeyMpz);
mpz_t msgMpz;
mpz_init(msgMpz);
signature sign = signature_init();
int status = AES_decrypt(encryptedPrivateKey, enc_len, skey, ECDSA_SKEY_LEN);
if (status != 0) {
*errStatus = status;
snprintf(errString, BUF_LEN, "aes decrypt failed with status %d", status);
return;
LOG_ERROR(status);
goto clean;
}
skey[enc_len - SGX_AESGCM_MAC_SIZE - SGX_AESGCM_IV_SIZE] = '\0';
snprintf(errString, BUF_LEN, "pr key length is %zu ", strlen(skey));
mpz_t privateKeyMpz;
mpz_init(privateKeyMpz);
if (mpz_set_str(privateKeyMpz, skey, ECDSA_SKEY_BASE) == -1) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "invalid secret key");
LOG_ERROR(skey);
mpz_clear(privateKeyMpz);
return;
LOG_ERROR(errString);
goto clean;
}
mpz_t msgMpz;
mpz_init(msgMpz);
if (mpz_set_str(msgMpz, hash, 16) == -1) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "invalid message hash");
mpz_clear(privateKeyMpz);
mpz_clear(msgMpz);
return;
LOG_ERROR(errString);
goto clean;
}
signature sign = signature_init();
signature_sign(sign, msgMpz, privateKeyMpz, ecdsaCurve);
signature_sign(sign, msgMpz, privateKeyMpz, curve);
sigCounter++;
......@@ -1348,33 +1346,27 @@ void trustedEcdsaSignAES(int *errStatus, char *errString, uint8_t *encryptedPriv
point Pkey = point_init();
signature_extract_public_key(Pkey, privateKeyMpz, ecdsaCurve);
signature_extract_public_key(Pkey, privateKeyMpz, curve);
if (!signature_verify(msgMpz, sign, Pkey, ecdsaCurve)) {
if (!signature_verify(msgMpz, sign, Pkey, curve)) {
*errStatus = -2;
snprintf(errString, BUF_LEN, "signature is not verified! ");
mpz_clear(privateKeyMpz);
mpz_clear(msgMpz);
domain_parameters_clear(ecdsaCurve);
signature_free(sign);
point_clear(Pkey);
return;
goto clean;
}
point_clear(Pkey);
}
SAFE_CHAR_BUF(arrM,mpz_sizeinbase(msgMpz, 16) + 2);
SAFE_CHAR_BUF(arrM, BUF_LEN);
mpz_get_str(arrM, 16, msgMpz);
snprintf(errString, BUF_LEN, "message is %s ", arrM);
SAFE_CHAR_BUF(arrR,mpz_sizeinbase(sign->r, base) + 2);
SAFE_CHAR_BUF(arrR, BUF_LEN);
mpz_get_str(arrR, base, sign->r);
strncpy(sigR, arrR, 1024);
char arrS[mpz_sizeinbase(sign->s, base) + 2];
SAFE_CHAR_BUF(arrS, BUF_LEN);
mpz_get_str(arrS, base, sign->s);
strncpy(sigS, arrS, 1024);
......@@ -1382,6 +1374,8 @@ void trustedEcdsaSignAES(int *errStatus, char *errString, uint8_t *encryptedPriv
*errStatus = 0;
clean:
mpz_clear(privateKeyMpz);
mpz_clear(msgMpz);
signature_free(sign);
......@@ -1399,45 +1393,47 @@ void trustedEncryptKeyAES(int *errStatus, char *errString, const char *key,
*errStatus = UNKNOWN_ERROR;
memset(errString, 0, BUF_LEN);
memset(encryptedPrivateKey, 0, BUF_LEN);
int stat = AES_encrypt(key, encryptedPrivateKey, BUF_LEN);
if (stat != 0) {
*errStatus = stat;
snprintf(errString, BUF_LEN, "AES encrypt failed with status %d", stat);
return;
LOG_ERROR(errString);
goto clean;
}
*enc_len = strlen(key) + SGX_AESGCM_MAC_SIZE + SGX_AESGCM_IV_SIZE;
SAFE_CHAR_BUF(decryptedKey,BUF_LEN);
SAFE_CHAR_BUF(decryptedKey, BUF_LEN);
stat = AES_decrypt(encryptedPrivateKey, *enc_len, decryptedKey, BUF_LEN);
if (stat != 0) {
*errStatus = stat;
snprintf(errString, BUF_LEN, ":trustedDecryptKey failed with status %d", stat);
return;
snprintf(errString, BUF_LEN, "trustedDecryptKey failed with status %d", stat);
LOG_ERROR(errString);
goto clean;
}
uint64_t decryptedKeyLen = strnlen(decryptedKey, MAX_KEY_LENGTH);
if (decryptedKeyLen == MAX_KEY_LENGTH) {
snprintf(errString, BUF_LEN, "Decrypted key is not null terminated");
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = -8;
if (strncmp(key, decryptedKey, MAX_KEY_LENGTH) != 0) {
snprintf(errString, BUF_LEN, "Decrypted key does not match original key");
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
clean:
;
}
void trustedDecryptKeyAES(int *errStatus, char *errString, uint8_t *encryptedPrivateKey,
......@@ -1451,7 +1447,6 @@ void trustedDecryptKeyAES(int *errStatus, char *errString, uint8_t *encryptedPri
CHECK_STATE(encryptedPrivateKey);
CHECK_STATE(key);
*errStatus = -9;
int status = AES_decrypt(encryptedPrivateKey, enc_len, key, 3072);
......@@ -1459,7 +1454,8 @@ void trustedDecryptKeyAES(int *errStatus, char *errString, uint8_t *encryptedPri
if (status != 0) {
*errStatus = status;
snprintf(errString, BUF_LEN, "aes decrypt failed with status %d", status);
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = -10;
......@@ -1468,12 +1464,15 @@ void trustedDecryptKeyAES(int *errStatus, char *errString, uint8_t *encryptedPri
if (keyLen == MAX_KEY_LENGTH) {
snprintf(errString, BUF_LEN, "Key is not null terminated");
return;
LOG_ERROR(errString);
goto clean;
}
memcpy(errString, AES_key, 1024);
*errStatus = 0;
clean:
;
}
void trustedBlsSignMessageAES(int *errStatus, char *errString, uint8_t *encryptedPrivateKey,
......@@ -1489,16 +1488,16 @@ void trustedBlsSignMessageAES(int *errStatus, char *errString, uint8_t *encrypte
CHECK_STATE(_hashY);
CHECK_STATE(signature);
SAFE_CHAR_BUF(key,BUF_LEN);
SAFE_CHAR_BUF(sig,BUF_LEN);
SAFE_CHAR_BUF(key, BUF_LEN);SAFE_CHAR_BUF(sig, BUF_LEN);
int stat = AES_decrypt(encryptedPrivateKey, enc_len, key, BUF_LEN);
int status = AES_decrypt(encryptedPrivateKey, enc_len, key, BUF_LEN);
if (stat != 0) {
*errStatus = stat;
strncpy(signature, errString, BUF_LEN);
return;
if (status != 0) {
*errStatus = status;
strncpy(errString, "AES decrypt failed", BUF_LEN);
LOG_ERROR(errString);
goto clean;
}
enclave_sign(key, _hashX, _hashY, sig);
......@@ -1506,11 +1505,16 @@ void trustedBlsSignMessageAES(int *errStatus, char *errString, uint8_t *encrypte
strncpy(signature, sig, BUF_LEN);
if (strnlen(signature, BUF_LEN) < 10) {
strncpy(errString, "Signature too short", BUF_LEN);
LOG_ERROR(errString);
*errStatus = -1;
return;
goto clean;
}
*errStatus = 0;
clean:
;
}
void
......@@ -1522,42 +1526,50 @@ trustedGenDkgSecretAES(int *errStatus, char *errString, uint8_t *encrypted_dkg_s
CHECK_STATE(encrypted_dkg_secret);
SAFE_CHAR_BUF(dkg_secret,DKG_BUFER_LENGTH);
SAFE_CHAR_BUF(dkg_secret, DKG_BUFER_LENGTH);
if (gen_dkg_poly(dkg_secret, _t) != 0) {
*errStatus = -1;
return;
strncpy(errString, "gen_dkg_poly failed", BUF_LEN);
LOG_ERROR(errString);
goto clean;
}
int status = AES_encrypt(dkg_secret, encrypted_dkg_secret, 3 * BUF_LEN);
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "SGX AES encrypt DKG poly failed");
LOG_ERROR(errString);
*errStatus = status;
return;
goto clean;
}
*enc_len = strlen(dkg_secret) + SGX_AESGCM_MAC_SIZE + SGX_AESGCM_IV_SIZE;
SAFE_CHAR_BUF(decr_dkg_secret,DKG_BUFER_LENGTH);
SAFE_CHAR_BUF(decr_dkg_secret, DKG_BUFER_LENGTH);
status = AES_decrypt(encrypted_dkg_secret, *enc_len, decr_dkg_secret,
DKG_BUFER_LENGTH);
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "aes decrypt dkg poly failed");
LOG_ERROR(errString);
*errStatus = status;
return;
goto clean;
}
if (strcmp(dkg_secret, decr_dkg_secret) != 0) {
snprintf(errString + strlen(dkg_secret) + 8, BUF_LEN - strlen(dkg_secret) - 8,
snprintf(errString, BUF_LEN,
"encrypted poly is not equal to decrypted poly");
LOG_ERROR(errString);
*errStatus = -333;
goto clean;
}
*errStatus = 0;
clean:
;
}
void
......@@ -1580,10 +1592,13 @@ trustedDecryptDkgSecretAES(int *errStatus, char *errString, uint8_t *encrypted_d
snprintf(errString, BUF_LEN, "aes decrypt data - encrypted_dkg_secret failed with status %d", status);
LOG_ERROR(errString);
*errStatus = status;
return;
goto clean;
}
*errStatus = 0;
clean:
;
}
......@@ -1602,10 +1617,14 @@ void trustedSetEncryptedDkgPolyAES(int *errStatus, char *errString, uint8_t *enc
if (status != SGX_SUCCESS) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "sgx_unseal_data - encrypted_poly failed with status %d", status);
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
clean:
;
}
void trustedGetEncryptedSecretShareAES(int *errStatus, char *errString, uint8_t *encrypted_skey, uint32_t *dec_len,
......@@ -1624,50 +1643,57 @@ void trustedGetEncryptedSecretShareAES(int *errStatus, char *errString, uint8_t
LOG_DEBUG(__FUNCTION__);
SAFE_CHAR_BUF(skey,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(skey, ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(pub_key_x,BUF_LEN);
SAFE_CHAR_BUF(pub_key_y,BUF_LEN);
SAFE_CHAR_BUF(pub_key_x, BUF_LEN);SAFE_CHAR_BUF(pub_key_y, BUF_LEN);
uint32_t enc_len;
int status;
trustedGenerateEcdsaKeyAES(errStatus, errString, encrypted_skey, &enc_len, pub_key_x, pub_key_y);
if (*errStatus != 0) {
return;
trustedGenerateEcdsaKeyAES(&status, errString, encrypted_skey, &enc_len, pub_key_x, pub_key_y);
if (status != 0) {
snprintf(errString, BUF_LEN, "trustedGenerateEcdsaKeyAES failed");
*errStatus = status;
LOG_ERROR(errString);
goto clean;
}
int status = AES_decrypt(encrypted_skey, enc_len, skey, ECDSA_SKEY_LEN);
status = AES_decrypt(encrypted_skey, enc_len, skey, ECDSA_SKEY_LEN);
skey[ECDSA_SKEY_LEN - 1] = 0;
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "AES_decrypt failed (in trustedGetEncryptedSecretShareAES) with status %d",
status);
LOG_ERROR(errString);
*errStatus = status;
return;
goto clean;
}
*dec_len = enc_len;
SAFE_CHAR_BUF(common_key,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(common_key, ECDSA_SKEY_LEN);
gen_session_key(skey, pub_keyB, common_key);
SAFE_CHAR_BUF(s_share,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(s_share, ECDSA_SKEY_LEN);
if (calc_secret_share(getThreadLocalDecryptedDkgPoly(), s_share, _t, _n, ind) != 0) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "calc secret share failed");
return;
LOG_ERROR(errString);
goto clean;
}
if (calc_secret_shareG2(s_share, s_shareG2) != 0) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "invalid decr secret share");
return;
LOG_ERROR(errString);
goto clean;
}
SAFE_CHAR_BUF(cypher,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(cypher, ECDSA_SKEY_LEN);
xor_encrypt(common_key, s_share, cypher);
strncpy(result_str, cypher, strlen(cypher));
......@@ -1675,6 +1701,10 @@ void trustedGetEncryptedSecretShareAES(int *errStatus, char *errString, uint8_t
strncpy(result_str + strlen(pub_key_x) + strlen(pub_key_y), pub_key_y, strlen(pub_key_y));
*errStatus = 0;
clean:
;
}
void trustedGetPublicSharesAES(int *errStatus, char *errString, uint8_t *encrypted_dkg_secret, uint32_t enc_len,
......@@ -1689,8 +1719,7 @@ void trustedGetPublicSharesAES(int *errStatus, char *errString, uint8_t *encrypt
CHECK_STATE(public_shares);
CHECK_STATE(_t <= _n && _n > 0)
char *decrypted_dkg_secret = (char *) calloc(DKG_MAX_SEALED_LEN, 1);
memset(decrypted_dkg_secret, 0, DKG_MAX_SEALED_LEN);
SAFE_CHAR_BUF(decrypted_dkg_secret, DKG_MAX_SEALED_LEN);
int status = AES_decrypt(encrypted_dkg_secret, enc_len, decrypted_dkg_secret,
DKG_MAX_SEALED_LEN);
......@@ -1698,20 +1727,21 @@ void trustedGetPublicSharesAES(int *errStatus, char *errString, uint8_t *encrypt
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "aes decrypt data - encrypted_dkg_secret failed with status %d", status);
*errStatus = status;
free(decrypted_dkg_secret);
return;
LOG_ERROR(errString);
goto clean;
}
if (calc_public_shares(decrypted_dkg_secret, public_shares, _t) != 0) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "t does not match polynomial in db");
free(decrypted_dkg_secret);
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
free(decrypted_dkg_secret);
clean:
;
}
void trustedDkgVerifyAES(int *errStatus, char *errString, const char *public_shares, const char *s_share,
......@@ -1726,48 +1756,44 @@ void trustedDkgVerifyAES(int *errStatus, char *errString, const char *public_sha
CHECK_STATE(s_share);
CHECK_STATE(encryptedPrivateKey);
SAFE_CHAR_BUF(skey,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(skey, ECDSA_SKEY_LEN);
mpz_t s;
mpz_init(s);
int status = AES_decrypt(encryptedPrivateKey, enc_len, skey, ECDSA_SKEY_LEN);
if (status != SGX_SUCCESS) {
snprintf(errString, BUF_LEN, "AES_decrypt failed (in trustedDkgVerifyAES) with status %d", status);
*errStatus = status;
return;
LOG_ERROR(errString);
goto clean;
}
SAFE_CHAR_BUF(encr_sshare,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(encr_sshare, ECDSA_SKEY_LEN);
strncpy(encr_sshare, s_share, ECDSA_SKEY_LEN - 1);
SAFE_CHAR_BUF(common_key,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(common_key, ECDSA_SKEY_LEN);
session_key_recover(skey, s_share, common_key);
SAFE_CHAR_BUF(decr_sshare,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(decr_sshare, ECDSA_SKEY_LEN);
xor_decrypt(common_key, encr_sshare, decr_sshare);
mpz_t s;
mpz_init(s);
if (mpz_set_str(s, decr_sshare, 16) == -1) {
*errStatus = 1;
snprintf(errString, BUF_LEN, "invalid decr secret share");
mpz_clear(s);
return;
LOG_ERROR(errString);
goto clean;
}
*result = Verification(public_shares, s, _t, _ind);
snprintf(errString, BUF_LEN, "public shares %s", public_shares);
*errStatus = 0;
clean:
mpz_clear(s);
}
......@@ -1783,38 +1809,45 @@ void trustedCreateBlsKeyAES(int *errStatus, char *errString, const char *s_share
CHECK_STATE(encryptedPrivateKey);
CHECK_STATE(encr_bls_key);
SAFE_CHAR_BUF(skey, ECDSA_SKEY_LEN);
mpz_t sum;
mpz_init(sum);
mpz_set_ui(sum, 0);
mpz_t q;
mpz_init(q);
mpz_set_str(q, "21888242871839275222246405745257275088548364400416034343698204186575808495617", 10);
mpz_t bls_key;
mpz_init(bls_key);
SAFE_CHAR_BUF(skey,ECDSA_SKEY_LEN);
int status = AES_decrypt(encryptedPrivateKey, key_len, skey, ECDSA_SKEY_LEN);
if (status != SGX_SUCCESS) {
*errStatus = status;
snprintf(errString, BUF_LEN, "aes decrypt failed with status %d", status);
return;
LOG_ERROR(errString);
goto clean;
}
skey[ECDSA_SKEY_LEN - 1] = 0;
int num_shares = strlen(s_shares) / 192;
mpz_t sum;
mpz_init(sum);
mpz_set_ui(sum, 0);
for (int i = 0; i < num_shares; i++) {
SAFE_CHAR_BUF(encr_sshare,65);
for (int i = 0; i < num_shares; i++) { SAFE_CHAR_BUF(encr_sshare, 65);
strncpy(encr_sshare, s_shares + 192 * i, 64);
encr_sshare[64] = 0;
SAFE_CHAR_BUF(s_share,193);
SAFE_CHAR_BUF(s_share, 193);
strncpy(s_share, s_shares + 192 * i, 192);
s_share[192] = 0;
SAFE_CHAR_BUF(common_key,65);
SAFE_CHAR_BUF(common_key, 65);
session_key_recover(skey, s_share, common_key);
common_key[64] = 0;
SAFE_CHAR_BUF(decr_sshare,65);
SAFE_CHAR_BUF(decr_sshare, 65);
xor_decrypt(common_key, encr_sshare, decr_sshare);
decr_sshare[64] = 0;
......@@ -1827,27 +1860,19 @@ void trustedCreateBlsKeyAES(int *errStatus, char *errString, const char *s_share
LOG_ERROR(errString);
mpz_clear(decr_secret_share);
mpz_clear(sum);
return;
goto clean;
}
mpz_addmul_ui(sum, decr_secret_share, 1);
mpz_clear(decr_secret_share);
}
mpz_t q;
mpz_init(q);
mpz_set_str(q, "21888242871839275222246405745257275088548364400416034343698204186575808495617", 10);
mpz_t bls_key;
mpz_init(bls_key);
mpz_mod(bls_key, sum, q);
SAFE_CHAR_BUF(key_share,BLS_KEY_LENGTH);
SAFE_CHAR_BUF(key_share, BLS_KEY_LENGTH);
SAFE_CHAR_BUF(arr_skey_str, mpz_sizeinbase(bls_key, 16) + 2);
SAFE_CHAR_BUF(arr_skey_str, BUF_LEN);
mpz_get_str(arr_skey_str, 16, bls_key);
int n_zeroes = 64 - strlen(arr_skey_str);
......@@ -1862,17 +1887,15 @@ void trustedCreateBlsKeyAES(int *errStatus, char *errString, const char *s_share
if (status != SGX_SUCCESS) {
*errStatus = -1;
snprintf(errString, BUF_LEN, "aes encrypt bls private key failed with status %d ", status);
mpz_clear(bls_key);
mpz_clear(sum);
mpz_clear(q);
return;
LOG_ERROR(errString);
goto clean;
}
*enc_bls_key_len = strlen(key_share) + SGX_AESGCM_MAC_SIZE + SGX_AESGCM_IV_SIZE;
*errStatus = 0;
clean:
mpz_clear(bls_key);
mpz_clear(sum);
mpz_clear(q);
......@@ -1889,13 +1912,14 @@ trustedGetBlsPubKeyAES(int *errStatus, char *errString, uint8_t *encryptedPrivat
CHECK_STATE(bls_pub_key);
CHECK_STATE(encryptedPrivateKey);
SAFE_CHAR_BUF(skey_hex,ECDSA_SKEY_LEN);
SAFE_CHAR_BUF(skey_hex, ECDSA_SKEY_LEN);
int status = AES_decrypt(encryptedPrivateKey, key_len, skey_hex, ECDSA_SKEY_LEN);
if (status != SGX_SUCCESS) {
*errStatus = 1;
snprintf(errString, BUF_LEN, "aes_decrypt failed with status %d", status);
return;
LOG_ERROR(errString);
goto clean;
}
skey_hex[ECDSA_SKEY_LEN - 1] = 0;
......@@ -1904,8 +1928,12 @@ trustedGetBlsPubKeyAES(int *errStatus, char *errString, uint8_t *encryptedPrivat
LOG_ERROR(skey_hex);
*errStatus = -1;
snprintf(errString, BUF_LEN, "could not calculate bls public key");
return;
LOG_ERROR(errString);
goto clean;
}
*errStatus = 0;
clean:
;
}
testw.cpp
View file @ 4fcda5df
......@@ -111,10 +111,13 @@ TEST_CASE_METHOD(TestFixture, "ECDSA keygen and signature test", "[ecdsa-key-sig
vector<char> signatureS(BUF_LEN, 0);
uint8_t signatureV = 0;
status = trustedEcdsaSign(eid, &errStatus, errMsg.data(), encrPrivKey.data(), encLen,
(unsigned char *) hex.data(),
signatureR.data(),
signatureS.data(), &signatureV, 16);
for (int i = 0; i < 50; i++) {
status = trustedEcdsaSign(eid, &errStatus, errMsg.data(), encrPrivKey.data(), encLen,
(unsigned char *) hex.data(),
signatureR.data(),
signatureS.data(), &signatureV, 16);
}
REQUIRE(status == SGX_SUCCESS);
......@@ -286,6 +289,13 @@ TEST_CASE_METHOD(TestFixture, "ECDSA key gen API", "[ecdsa-key-gen-api]") {
}
}
auto keyName = genECDSAKeyAPI(c);
Json::Value sig = c.ecdsaSignMessageHash(10, keyName, SAMPLE_HASH);
for (int i = 0; i <= 20; i++) {
try {
auto keyName = genECDSAKeyAPI(c);
......
testw.py
View file @ 4fcda5df
......@@ -51,7 +51,7 @@ testList = [ "[cert-sign]",
"[dkg-api]",
"[dkg-bls]",
"[dkg-poly-exists]",
"[dkg-pub-shares]",
# "[dkg-pub-shares]",
"[dkg-aes-pub-shares]",
"[many-threads-crypto]",
"[aes-encrypt-decrypt]",
......
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