Enable curve-spefific ECDSA implementations via EC_METHOD

which are already enabled for ECDH.

Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com>

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9348)
This commit is contained in:
Patrick Steuer 2019-07-11 10:23:49 +02:00
parent 1461e66706
commit 9bf682f62b
13 changed files with 119 additions and 36 deletions

View file

@ -984,6 +984,9 @@ const EC_METHOD *EC_GF2m_simple_method(void)
0, /* keycopy */
0, /* keyfinish */
ecdh_simple_compute_key,
ecdsa_simple_sign_setup,
ecdsa_simple_sign_sig,
ecdsa_simple_verify_sig,
0, /* field_inverse_mod_ord */
0, /* blind_coordinates */
ec_GF2m_simple_ladder_pre,

View file

@ -179,6 +179,14 @@ struct ec_method_st {
/* custom ECDH operation */
int (*ecdh_compute_key)(unsigned char **pout, size_t *poutlen,
const EC_POINT *pub_key, const EC_KEY *ecdh);
/* custom ECDSA */
int (*ecdsa_sign_setup)(EC_KEY *eckey, BN_CTX *ctx, BIGNUM **kinvp,
BIGNUM **rp);
ECDSA_SIG *(*ecdsa_sign_sig)(const unsigned char *dgst, int dgstlen,
const BIGNUM *kinv, const BIGNUM *r,
EC_KEY *eckey);
int (*ecdsa_verify_sig)(const unsigned char *dgst, int dgstlen,
const ECDSA_SIG *sig, EC_KEY *eckey);
/* Inverse modulo order */
int (*field_inverse_mod_ord)(const EC_GROUP *, BIGNUM *r,
const BIGNUM *x, BN_CTX *);
@ -660,6 +668,13 @@ int ossl_ecdsa_verify(int type, const unsigned char *dgst, int dgst_len,
const unsigned char *sigbuf, int sig_len, EC_KEY *eckey);
int ossl_ecdsa_verify_sig(const unsigned char *dgst, int dgst_len,
const ECDSA_SIG *sig, EC_KEY *eckey);
int ecdsa_simple_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp,
BIGNUM **rp);
ECDSA_SIG *ecdsa_simple_sign_sig(const unsigned char *dgst, int dgst_len,
const BIGNUM *in_kinv, const BIGNUM *in_r,
EC_KEY *eckey);
int ecdsa_simple_verify_sig(const unsigned char *dgst, int dgst_len,
const ECDSA_SIG *sig, EC_KEY *eckey);
int ED25519_sign(uint8_t *out_sig, const uint8_t *message, size_t message_len,
const uint8_t public_key[32], const uint8_t private_key[32]);

View file

@ -14,6 +14,41 @@
#include "internal/bn_int.h"
#include "ec_lcl.h"
int ossl_ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp,
BIGNUM **rp)
{
if (eckey->group->meth->ecdsa_sign_setup == NULL) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SETUP, EC_R_CURVE_DOES_NOT_SUPPORT_ECDSA);
return 0;
}
return eckey->group->meth->ecdsa_sign_setup(eckey, ctx_in, kinvp, rp);
}
ECDSA_SIG *ossl_ecdsa_sign_sig(const unsigned char *dgst, int dgst_len,
const BIGNUM *in_kinv, const BIGNUM *in_r,
EC_KEY *eckey)
{
if (eckey->group->meth->ecdsa_sign_sig == NULL) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, EC_R_CURVE_DOES_NOT_SUPPORT_ECDSA);
return NULL;
}
return eckey->group->meth->ecdsa_sign_sig(dgst, dgst_len,
in_kinv, in_r, eckey);
}
int ossl_ecdsa_verify_sig(const unsigned char *dgst, int dgst_len,
const ECDSA_SIG *sig, EC_KEY *eckey)
{
if (eckey->group->meth->ecdsa_verify_sig == NULL) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, EC_R_CURVE_DOES_NOT_SUPPORT_ECDSA);
return 0;
}
return eckey->group->meth->ecdsa_verify_sig(dgst, dgst_len, sig, eckey);
}
int ossl_ecdsa_sign(int type, const unsigned char *dgst, int dlen,
unsigned char *sig, unsigned int *siglen,
const BIGNUM *kinv, const BIGNUM *r, EC_KEY *eckey)
@ -145,15 +180,15 @@ static int ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in,
return ret;
}
int ossl_ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp,
BIGNUM **rp)
int ecdsa_simple_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp,
BIGNUM **rp)
{
return ecdsa_sign_setup(eckey, ctx_in, kinvp, rp, NULL, 0);
}
ECDSA_SIG *ossl_ecdsa_sign_sig(const unsigned char *dgst, int dgst_len,
const BIGNUM *in_kinv, const BIGNUM *in_r,
EC_KEY *eckey)
ECDSA_SIG *ecdsa_simple_sign_sig(const unsigned char *dgst, int dgst_len,
const BIGNUM *in_kinv, const BIGNUM *in_r,
EC_KEY *eckey)
{
int ok = 0, i;
BIGNUM *kinv = NULL, *s, *m = NULL;
@ -167,35 +202,35 @@ ECDSA_SIG *ossl_ecdsa_sign_sig(const unsigned char *dgst, int dgst_len,
priv_key = EC_KEY_get0_private_key(eckey);
if (group == NULL) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_PASSED_NULL_PARAMETER);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_PASSED_NULL_PARAMETER);
return NULL;
}
if (priv_key == NULL) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, EC_R_MISSING_PRIVATE_KEY);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, EC_R_MISSING_PRIVATE_KEY);
return NULL;
}
if (!EC_KEY_can_sign(eckey)) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING);
return NULL;
}
ret = ECDSA_SIG_new();
if (ret == NULL) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_MALLOC_FAILURE);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_MALLOC_FAILURE);
return NULL;
}
ret->r = BN_new();
ret->s = BN_new();
if (ret->r == NULL || ret->s == NULL) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_MALLOC_FAILURE);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_MALLOC_FAILURE);
goto err;
}
s = ret->s;
if ((ctx = BN_CTX_new_ex(eckey->libctx)) == NULL
|| (m = BN_new()) == NULL) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_MALLOC_FAILURE);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_MALLOC_FAILURE);
goto err;
}
@ -207,25 +242,25 @@ ECDSA_SIG *ossl_ecdsa_sign_sig(const unsigned char *dgst, int dgst_len,
if (8 * dgst_len > i)
dgst_len = (i + 7) / 8;
if (!BN_bin2bn(dgst, dgst_len, m)) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_BN_LIB);
goto err;
}
/* If still too long, truncate remaining bits with a shift */
if ((8 * dgst_len > i) && !BN_rshift(m, m, 8 - (i & 0x7))) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_BN_LIB);
goto err;
}
do {
if (in_kinv == NULL || in_r == NULL) {
if (!ecdsa_sign_setup(eckey, ctx, &kinv, &ret->r, dgst, dgst_len)) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_ECDSA_LIB);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_ECDSA_LIB);
goto err;
}
ckinv = kinv;
} else {
ckinv = in_kinv;
if (BN_copy(ret->r, in_r) == NULL) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_MALLOC_FAILURE);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_MALLOC_FAILURE);
goto err;
}
}
@ -239,11 +274,11 @@ ECDSA_SIG *ossl_ecdsa_sign_sig(const unsigned char *dgst, int dgst_len,
*/
if (!bn_to_mont_fixed_top(s, ret->r, group->mont_data, ctx)
|| !bn_mul_mont_fixed_top(s, s, priv_key, group->mont_data, ctx)) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_BN_LIB);
goto err;
}
if (!bn_mod_add_fixed_top(s, s, m, order)) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_BN_LIB);
goto err;
}
/*
@ -252,7 +287,7 @@ ECDSA_SIG *ossl_ecdsa_sign_sig(const unsigned char *dgst, int dgst_len,
*/
if (!bn_to_mont_fixed_top(s, s, group->mont_data, ctx)
|| !BN_mod_mul_montgomery(s, s, ckinv, group->mont_data, ctx)) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, ERR_R_BN_LIB);
goto err;
}
@ -262,7 +297,7 @@ ECDSA_SIG *ossl_ecdsa_sign_sig(const unsigned char *dgst, int dgst_len,
* generate new kinv and r values
*/
if (in_kinv != NULL && in_r != NULL) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, EC_R_NEED_NEW_SETUP_VALUES);
ECerr(EC_F_ECDSA_SIMPLE_SIGN_SIG, EC_R_NEED_NEW_SETUP_VALUES);
goto err;
}
} else {
@ -314,8 +349,8 @@ int ossl_ecdsa_verify(int type, const unsigned char *dgst, int dgst_len,
return ret;
}
int ossl_ecdsa_verify_sig(const unsigned char *dgst, int dgst_len,
const ECDSA_SIG *sig, EC_KEY *eckey)
int ecdsa_simple_verify_sig(const unsigned char *dgst, int dgst_len,
const ECDSA_SIG *sig, EC_KEY *eckey)
{
int ret = -1, i;
BN_CTX *ctx;
@ -328,18 +363,18 @@ int ossl_ecdsa_verify_sig(const unsigned char *dgst, int dgst_len,
/* check input values */
if (eckey == NULL || (group = EC_KEY_get0_group(eckey)) == NULL ||
(pub_key = EC_KEY_get0_public_key(eckey)) == NULL || sig == NULL) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, EC_R_MISSING_PARAMETERS);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, EC_R_MISSING_PARAMETERS);
return -1;
}
if (!EC_KEY_can_sign(eckey)) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING);
return -1;
}
ctx = BN_CTX_new_ex(eckey->libctx);
if (ctx == NULL) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_MALLOC_FAILURE);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_MALLOC_FAILURE);
return -1;
}
BN_CTX_start(ctx);
@ -348,26 +383,26 @@ int ossl_ecdsa_verify_sig(const unsigned char *dgst, int dgst_len,
m = BN_CTX_get(ctx);
X = BN_CTX_get(ctx);
if (X == NULL) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_BN_LIB);
goto err;
}
order = EC_GROUP_get0_order(group);
if (order == NULL) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_EC_LIB);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_EC_LIB);
goto err;
}
if (BN_is_zero(sig->r) || BN_is_negative(sig->r) ||
BN_ucmp(sig->r, order) >= 0 || BN_is_zero(sig->s) ||
BN_is_negative(sig->s) || BN_ucmp(sig->s, order) >= 0) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, EC_R_BAD_SIGNATURE);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, EC_R_BAD_SIGNATURE);
ret = 0; /* signature is invalid */
goto err;
}
/* calculate tmp1 = inv(S) mod order */
if (!ec_group_do_inverse_ord(group, u2, sig->s, ctx)) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_BN_LIB);
goto err;
}
/* digest -> m */
@ -378,41 +413,41 @@ int ossl_ecdsa_verify_sig(const unsigned char *dgst, int dgst_len,
if (8 * dgst_len > i)
dgst_len = (i + 7) / 8;
if (!BN_bin2bn(dgst, dgst_len, m)) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_BN_LIB);
goto err;
}
/* If still too long truncate remaining bits with a shift */
if ((8 * dgst_len > i) && !BN_rshift(m, m, 8 - (i & 0x7))) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_BN_LIB);
goto err;
}
/* u1 = m * tmp mod order */
if (!BN_mod_mul(u1, m, u2, order, ctx)) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_BN_LIB);
goto err;
}
/* u2 = r * w mod q */
if (!BN_mod_mul(u2, sig->r, u2, order, ctx)) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_BN_LIB);
goto err;
}
if ((point = EC_POINT_new(group)) == NULL) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_MALLOC_FAILURE);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_MALLOC_FAILURE);
goto err;
}
if (!EC_POINT_mul(group, point, u1, pub_key, u2, ctx)) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_EC_LIB);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_EC_LIB);
goto err;
}
if (!EC_POINT_get_affine_coordinates(group, point, X, NULL, ctx)) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_EC_LIB);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_EC_LIB);
goto err;
}
if (!BN_nnmod(u1, X, order, ctx)) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
ECerr(EC_F_ECDSA_SIMPLE_VERIFY_SIG, ERR_R_BN_LIB);
goto err;
}
/* if the signature is correct u1 is equal to sig->r */

View file

@ -63,6 +63,9 @@ const EC_METHOD *EC_GFp_mont_method(void)
0, /* keycopy */
0, /* keyfinish */
ecdh_simple_compute_key,
ecdsa_simple_sign_setup,
ecdsa_simple_sign_sig,
ecdsa_simple_verify_sig,
0, /* field_inverse_mod_ord */
ec_GFp_simple_blind_coordinates,
ec_GFp_simple_ladder_pre,

View file

@ -65,6 +65,9 @@ const EC_METHOD *EC_GFp_nist_method(void)
0, /* keycopy */
0, /* keyfinish */
ecdh_simple_compute_key,
ecdsa_simple_sign_setup,
ecdsa_simple_sign_sig,
ecdsa_simple_verify_sig,
0, /* field_inverse_mod_ord */
ec_GFp_simple_blind_coordinates,
ec_GFp_simple_ladder_pre,

View file

@ -291,6 +291,9 @@ const EC_METHOD *EC_GFp_nistp224_method(void)
ec_key_simple_generate_public_key,
0, /* keycopy */
0, /* keyfinish */
ecdsa_simple_sign_setup,
ecdsa_simple_sign_sig,
ecdsa_simple_verify_sig,
ecdh_simple_compute_key,
0, /* field_inverse_mod_ord */
0, /* blind_coordinates */

View file

@ -1823,6 +1823,9 @@ const EC_METHOD *EC_GFp_nistp256_method(void)
0, /* keycopy */
0, /* keyfinish */
ecdh_simple_compute_key,
ecdsa_simple_sign_setup,
ecdsa_simple_sign_sig,
ecdsa_simple_verify_sig,
0, /* field_inverse_mod_ord */
0, /* blind_coordinates */
0, /* ladder_pre */

View file

@ -1665,6 +1665,9 @@ const EC_METHOD *EC_GFp_nistp521_method(void)
0, /* keycopy */
0, /* keyfinish */
ecdh_simple_compute_key,
ecdsa_simple_sign_setup,
ecdsa_simple_sign_sig,
ecdsa_simple_verify_sig,
0, /* field_inverse_mod_ord */
0, /* blind_coordinates */
0, /* ladder_pre */

View file

@ -1689,6 +1689,9 @@ const EC_METHOD *EC_GFp_nistz256_method(void)
0, /* keycopy */
0, /* keyfinish */
ecdh_simple_compute_key,
ecdsa_simple_sign_setup,
ecdsa_simple_sign_sig,
ecdsa_simple_verify_sig,
ecp_nistz256_inv_mod_ord, /* can be #define-d NULL */
0, /* blind_coordinates */
0, /* ladder_pre */

View file

@ -175,6 +175,9 @@ const EC_METHOD *EC_GFp_s390x_nistp##bits##_method(void) \
NULL, /* keycopy */ \
NULL, /* keyfinish */ \
ecdh_simple_compute_key, \
ecdsa_simple_sign_setup, \
ecdsa_simple_sign_sig, \
ecdsa_simple_verify_sig, \
NULL, /* field_inverse_mod_ord */ \
ec_GFp_simple_blind_coordinates, \
ec_GFp_simple_ladder_pre, \

View file

@ -64,6 +64,9 @@ const EC_METHOD *EC_GFp_simple_method(void)
0, /* keycopy */
0, /* keyfinish */
ecdh_simple_compute_key,
ecdsa_simple_sign_setup,
ecdsa_simple_sign_sig,
ecdsa_simple_verify_sig,
0, /* field_inverse_mod_ord */
ec_GFp_simple_blind_coordinates,
ec_GFp_simple_ladder_pre,

View file

@ -551,6 +551,9 @@ EC_F_ECDSA_SIGN_EX:254:ECDSA_sign_ex
EC_F_ECDSA_SIGN_SETUP:248:ECDSA_sign_setup
EC_F_ECDSA_SIG_NEW:265:ECDSA_SIG_new
EC_F_ECDSA_VERIFY:253:ECDSA_verify
EC_F_ECDSA_SIMPLE_SIGN_SETUP:310:ecdsa_simple_sign_setup
EC_F_ECDSA_SIMPLE_SIGN_SIG:311:ecdsa_simple_sign_sig
EC_F_ECDSA_SIMPLE_VERIFY_SIG:312:ecdsa_simple_verify_sig
EC_F_ECD_ITEM_VERIFY:270:ecd_item_verify
EC_F_ECKEY_PARAM2TYPE:223:eckey_param2type
EC_F_ECKEY_PARAM_DECODE:212:eckey_param_decode
@ -716,6 +719,7 @@ EC_F_NISTP521_PRE_COMP_NEW:237:nistp521_pre_comp_new
EC_F_O2I_ECPUBLICKEY:152:o2i_ECPublicKey
EC_F_OLD_EC_PRIV_DECODE:222:old_ec_priv_decode
EC_F_OSSL_ECDH_COMPUTE_KEY:247:ossl_ecdh_compute_key
EC_F_OSSL_ECDSA_SIGN_SETUP:300:ossl_ecdsa_sign_setup
EC_F_OSSL_ECDSA_SIGN_SIG:249:ossl_ecdsa_sign_sig
EC_F_OSSL_ECDSA_VERIFY_SIG:250:ossl_ecdsa_verify_sig
EC_F_PKEY_ECD_CTRL:271:pkey_ecd_ctrl
@ -2327,6 +2331,7 @@ EC_R_BUFFER_TOO_SMALL:100:buffer too small
EC_R_CANNOT_INVERT:165:cannot invert
EC_R_COORDINATES_OUT_OF_RANGE:146:coordinates out of range
EC_R_CURVE_DOES_NOT_SUPPORT_ECDH:160:curve does not support ecdh
EC_R_CURVE_DOES_NOT_SUPPORT_ECDSA:170:curve does not support ecdsa
EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING:159:curve does not support signing
EC_R_D2I_ECPKPARAMETERS_FAILURE:117:d2i ecpkparameters failure
EC_R_DECODE_ERROR:142:decode error

View file

@ -214,6 +214,7 @@ int ERR_load_EC_strings(void);
# define EC_R_CANNOT_INVERT 165
# define EC_R_COORDINATES_OUT_OF_RANGE 146
# define EC_R_CURVE_DOES_NOT_SUPPORT_ECDH 160
# define EC_R_CURVE_DOES_NOT_SUPPORT_ECDSA 170
# define EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING 159
# define EC_R_D2I_ECPKPARAMETERS_FAILURE 117
# define EC_R_DECODE_ERROR 142