themis_secure_message_signer_t* themis_secure_message_signer_init(const uint8_t* key, const size_t key_length)
{
themis_secure_message_signer_t* ctx=malloc(sizeof(themis_secure_message_signer_t));
if(!ctx){
return NULL;
}
ctx->sign_ctx=NULL;
ctx->sign_ctx=soter_sign_create(get_alg_id(key,key_length),NULL,0,key, key_length);
if(!(ctx->sign_ctx)){
free(ctx);
return NULL;
}
return ctx;
}
themis_status_t themis_gen_key_pair(soter_sign_alg_t alg,
uint8_t* private_key,
size_t* private_key_length,
uint8_t* public_key,
size_t* public_key_length)
{
soter_sign_ctx_t* ctx=soter_sign_create(alg,NULL,0,NULL,0);
THEMIS_CHECK(ctx!=NULL);
soter_status_t res=soter_sign_export_key(ctx, private_key, private_key_length, true);
if(res!=THEMIS_SUCCESS && res != THEMIS_BUFFER_TOO_SMALL){
soter_sign_destroy(ctx);
return res;
}
soter_status_t res2=soter_sign_export_key(ctx, public_key, public_key_length, false);
if(res2!=THEMIS_SUCCESS && res2!=THEMIS_BUFFER_TOO_SMALL){
soter_sign_destroy(ctx);
return res;
}
soter_sign_destroy(ctx);
if(res==THEMIS_BUFFER_TOO_SMALL || res2==THEMIS_BUFFER_TOO_SMALL){
return THEMIS_BUFFER_TOO_SMALL;
}
return THEMIS_SUCCESS;
}
static int sign_test(soter_sign_alg_t alg)
{
char test_data[]="test message";
size_t test_data_length=strlen(test_data);
soter_sign_ctx_t* ctx=NULL;
uint8_t* signature=NULL;
size_t signature_length=0;
ctx=soter_sign_create(alg,NULL,0,NULL,0);
if(!ctx){
testsuite_fail_if(!ctx, "soter_sign_ctx_t == NULL");
return -1;
}
uint8_t private_key[8192];
size_t private_key_length=sizeof(private_key);
uint8_t public_key[8192];
size_t public_key_length=sizeof(public_key);
soter_status_t res;
res=soter_sign_export_key(ctx, private_key, &private_key_length, true);
if(res!=SOTER_SUCCESS){
testsuite_fail_if(res!=SOTER_SUCCESS,"soter_sign_export_key (private key) fail");
soter_sign_destroy(ctx);
return -6;
}
res=soter_sign_export_key(ctx, public_key, &public_key_length, false);
if(res!=SOTER_SUCCESS){
testsuite_fail_if(res!=SOTER_SUCCESS,"soter_sign_export_key (public key) fail");
soter_sign_destroy(ctx);
return -7;
}
res=soter_sign_destroy(ctx);
if(res!=SOTER_SUCCESS){
testsuite_fail_if(res!=SOTER_SUCCESS,"soter_sign_destroy fail");
return -8;
}
soter_sign_ctx_t* sctx=NULL;
sctx=soter_sign_create(alg,private_key,private_key_length,NULL,0);
if(!sctx){
testsuite_fail_if(!sctx, "soter_sign_ctx_t == NULL 2");
return -1;
}
res=soter_sign_update(sctx, test_data, test_data_length);
if(res!=SOTER_SUCCESS){
testsuite_fail_if(res!=SOTER_SUCCESS, "soter_sign_update fail");
soter_sign_destroy(sctx);
return -2;
}
res=soter_sign_final(sctx, signature, &signature_length);
if(res!=SOTER_BUFFER_TOO_SMALL){
testsuite_fail_if(res!=SOTER_BUFFER_TOO_SMALL, "soter_sign_final (signature length determine) fail");
soter_sign_destroy(sctx);
return -3;
}
signature=malloc(signature_length);
if(!signature){
testsuite_fail_if(!signature, "out of memory");
soter_sign_destroy(ctx);
return -4;
}
res=soter_sign_final(sctx, signature, &signature_length);
if(res!=SOTER_SUCCESS){
testsuite_fail_if(res!=SOTER_SUCCESS, "soter_sign_final fail");
soter_sign_destroy(sctx);
return -5;
}
res=soter_sign_destroy(sctx);
if(res!=SOTER_SUCCESS){
testsuite_fail_if(res!=SOTER_SUCCESS,"soter_sign_destroy fail");
return -8;
}
soter_verify_ctx_t* vctx=NULL;
vctx=soter_verify_create(alg, NULL, 0, public_key, public_key_length);
if(!vctx){
testsuite_fail_if(!vctx, "soter_verify_ctx_t == NULL");
return -9;
}
res=soter_verify_update(vctx, test_data, test_data_length);
if(res!=SOTER_SUCCESS){
testsuite_fail_if(res!=SOTER_SUCCESS, "soter_verify_update fail");
soter_verify_destroy(vctx);
return -10;
}
res=soter_verify_final(vctx, signature, signature_length);
if(res!=SOTER_SUCCESS){
testsuite_fail_if(res!=SOTER_SUCCESS, "soter_verify_final fail");
soter_verify_destroy(vctx);
return -11;
}
res=soter_sign_destroy(vctx);
if(res!=SOTER_SUCCESS){
testsuite_fail_if(res!=SOTER_SUCCESS,"soter_sign_destroy fail");
return -12;
}
return 0;
}
static void soter_sign_api_test()
{
uint8_t priv[MAX_TEST_KEY];
size_t priv_length = sizeof(priv);
uint8_t pub[MAX_TEST_KEY];
size_t pub_length = sizeof(pub);
uint8_t message[MAX_TEST_DATA];
size_t message_length = rand_int(MAX_TEST_DATA);
uint8_t signature[MAX_TEST_DATA];
size_t signature_length = sizeof(signature);
soter_status_t res;
if (soter_rand(message, message_length))
{
testsuite_fail_if(true, "soter_rand failed");
return;
}
soter_sign_ctx_t *sign_ctx = soter_sign_create(SOTER_SIGN_ecdsa_none_pkcs8, NULL, 0, NULL, 0);
if (!sign_ctx)
{
testsuite_fail_if(true, "soter_sign_create failed");
return;
}
res = soter_sign_export_key(sign_ctx, priv, &priv_length, true);
if (SOTER_SUCCESS != res)
{
testsuite_fail_if(true, "soter_sign_export_key failed");
soter_sign_destroy(sign_ctx);
return;
}
res = soter_sign_export_key(sign_ctx, pub, &pub_length, false);
if (SOTER_SUCCESS != res)
{
testsuite_fail_if(true, "soter_sign_export_key failed");
soter_sign_destroy(sign_ctx);
return;
}
soter_sign_destroy(sign_ctx);
sign_ctx = soter_sign_create((soter_sign_alg_t)-1, priv, priv_length, NULL, 0);
testsuite_fail_if(sign_ctx, "soter_sign_create: invalid algorithm");
sign_ctx = soter_sign_create(SOTER_SIGN_ecdsa_none_pkcs8, priv, priv_length - 1, NULL, 0);
testsuite_fail_if(sign_ctx, "soter_sign_create: invalid private key length");
sign_ctx = soter_sign_create(SOTER_SIGN_ecdsa_none_pkcs8, priv, priv_length, NULL, 0);
if (!sign_ctx)
{
testsuite_fail_if(true, "soter_sign_create failed");
return;
}
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_sign_update(NULL, message, message_length), "soter_sign_update: invalid context");
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_sign_update(sign_ctx, NULL, message_length), "soter_sign_update: invalid message");
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_sign_update(sign_ctx, message, 0), "soter_sign_update: invalid message length");
res = soter_sign_update(sign_ctx, message, message_length);
if (SOTER_SUCCESS != res)
{
testsuite_fail_if(true, "soter_sign_update failed");
soter_sign_destroy(sign_ctx);
return;
}
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_sign_final(NULL, signature, &signature_length), "soter_sign_final: invalid context");
testsuite_fail_unless(SOTER_BUFFER_TOO_SMALL == soter_sign_final(sign_ctx, NULL, &signature_length), "soter_sign_final: get output size (NULL out buffer)");
signature_length--;
testsuite_fail_unless(SOTER_BUFFER_TOO_SMALL == soter_sign_final(sign_ctx, signature, &signature_length), "soter_sign_final: get output size (small out buffer)");
res = soter_sign_final(sign_ctx, signature, &signature_length);
if (SOTER_SUCCESS != res)
{
testsuite_fail_if(true, "soter_sign_final failed");
soter_sign_destroy(sign_ctx);
return;
}
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_sign_destroy(NULL), "soter_sign_destroy: invalid context");
res = soter_sign_destroy(sign_ctx);
if (SOTER_SUCCESS != res){
testsuite_fail_if(true, "soter_sign_destroy failed");
return;
}
sign_ctx = soter_verify_create((soter_sign_alg_t)-1, NULL, 0, pub, pub_length);
testsuite_fail_if(sign_ctx, "soter_verify_create: invalid algorithm");
sign_ctx = soter_verify_create(SOTER_SIGN_ecdsa_none_pkcs8, NULL, 0, pub, pub_length - 1);
testsuite_fail_if(sign_ctx, "soter_verify_create: invalid public key length");
sign_ctx = soter_verify_create(SOTER_SIGN_ecdsa_none_pkcs8, NULL, 0, pub, pub_length);
if (!sign_ctx)
{
testsuite_fail_if(true, "soter_verify_create failed");
return;
}
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_verify_update(NULL, message, message_length), "soter_verify_update: invalid context");
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_verify_update(sign_ctx, NULL, message_length), "soter_verify_update: invalid message");
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_verify_update(sign_ctx, message, 0), "soter_verify_update: invalid message length");
res = soter_verify_update(sign_ctx, message, message_length);
if (SOTER_SUCCESS != res)
{
testsuite_fail_if(true, "soter_verify_update failed");
soter_verify_destroy(sign_ctx);
return;
}
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_verify_final(NULL, signature, signature_length), "soter_verify_final: invalid context");
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_verify_final(sign_ctx, NULL, signature_length), "soter_verify_final: invalid signature buffer");
testsuite_fail_unless(SOTER_INVALID_SIGNATURE == soter_verify_final(sign_ctx, signature, signature_length - 1), "soter_verify_final: invalid signature length");
signature[signature_length / 2]++;
testsuite_fail_unless(SOTER_INVALID_SIGNATURE == soter_verify_final(sign_ctx, signature, signature_length), "soter_verify_final: invalid signature value");
signature[signature_length / 2]--;
testsuite_fail_unless(SOTER_SUCCESS == soter_verify_final(sign_ctx, signature, signature_length), "soter_verify_final: normal flow");
testsuite_fail_unless(SOTER_INVALID_PARAMETER == soter_verify_destroy(NULL), "soter_verify_destroy: invalid context");
res = soter_verify_destroy(sign_ctx);
if (SOTER_SUCCESS != res)
{
testsuite_fail_if(true, "soter_verify_destroy failed");
return;
}
sign_ctx = soter_verify_create(SOTER_SIGN_ecdsa_none_pkcs8, NULL, 0, pub, pub_length);
if (!sign_ctx)
{
testsuite_fail_if(true, "soter_verify_create failed");
return;
}
message[message_length / 2]++;
res = soter_verify_update(sign_ctx, message, message_length);
if (SOTER_SUCCESS != res)
{
testsuite_fail_if(true, "soter_verify_update failed");
soter_verify_destroy(sign_ctx);
return;
}
message[message_length / 2]--;
testsuite_fail_unless(SOTER_INVALID_SIGNATURE == soter_verify_final(sign_ctx, signature, signature_length), "soter_verify_final: wrong signed message");
soter_verify_destroy(sign_ctx);
}