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check EC public key isn't point at infinity

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This commit is contained in:
Dr. Stephen Henson 2011-01-24 15:04:34 +00:00
parent 0aa1aedbce
commit a428ac4750
2 changed files with 7 additions and 1 deletions
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2
crypto/ec/Makefile
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@ -38,7 +38,7 @@ top:
all: lib
lib: $(LIBOBJ)
$(AR) $(LIB) $(LIBOBJ)
$(ARX) $(LIB) $(LIBOBJ)
$(RANLIB) $(LIB) || echo Never mind.
@touch lib

6
crypto/ec/ec_key.c
View file

@ -304,6 +304,12 @@ int EC_KEY_check_key(const EC_KEY *eckey)
ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key))
{
ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY);
goto err;
}
if ((ctx = BN_CTX_new()) == NULL)
goto err;