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/*
* (C) 2017 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include "tests.h"
#if defined(BOTAN_HAS_ASN1)
#include <botan/der_enc.h>
#include <botan/ber_dec.h>
#include <botan/asn1_str.h>
#endif
namespace Botan_Tests {
#if defined(BOTAN_HAS_ASN1)
namespace {
Test::Result test_ber_stack_recursion()
{
Test::Result result("BER stack recursion");
// OSS-Fuzz #813 GitHub #989
try
{
const std::vector<uint8_t> in(10000000, 0);
Botan::DataSource_Memory input(in.data(), in.size());
Botan::BER_Decoder dec(input);
while(dec.more_items())
{
Botan::BER_Object obj;
dec.get_next(obj);
}
}
catch(Botan::Decoding_Error&)
{
}
result.test_success("No crash");
return result;
}
Test::Result test_asn1_utf8_ascii_parsing()
{
Test::Result result("ASN.1 ASCII parsing");
try
{
// \x13 - ASN1 tag for 'printable string'
// \x06 - 6 characters of payload
// ... - UTF-8 encoded (ASCII chars only) word 'Moscow'
const std::string moscow =
"\x13\x06\x4D\x6F\x73\x63\x6F\x77";
const std::string moscow_plain = "Moscow";
Botan::DataSource_Memory input(moscow.data());
Botan::BER_Decoder dec(input);
Botan::ASN1_String str;
str.decode_from(dec);
result.test_eq("value()", str.value(), moscow_plain);
}
catch(const Botan::Decoding_Error &ex)
{
result.test_failure(ex.what());
}
return result;
}
Test::Result test_asn1_utf8_parsing()
{
Test::Result result("ASN.1 UTF-8 parsing");
try
{
// \x0C - ASN1 tag for 'UTF8 string'
// \x0C - 12 characters of payload
// ... - UTF-8 encoded russian word for Moscow in cyrillic script
const std::string moscow =
"\x0C\x0C\xD0\x9C\xD0\xBE\xD1\x81\xD0\xBA\xD0\xB2\xD0\xB0";
const std::string moscow_plain =
"\xD0\x9C\xD0\xBE\xD1\x81\xD0\xBA\xD0\xB2\xD0\xB0";
Botan::DataSource_Memory input(moscow.data());
Botan::BER_Decoder dec(input);
Botan::ASN1_String str;
str.decode_from(dec);
result.test_eq("value()", str.value(), moscow_plain);
}
catch(const Botan::Decoding_Error &ex)
{
result.test_failure(ex.what());
}
return result;
}
Test::Result test_asn1_ucs2_parsing()
{
Test::Result result("ASN.1 BMP string (UCS-2) parsing");
try
{
// \x1E - ASN1 tag for 'BMP (UCS-2) string'
// \x0C - 12 characters of payload
// ... - UCS-2 encoding for Moscow in cyrillic script
const std::string moscow =
"\x1E\x0C\x04\x1C\x04\x3E\x04\x41\x04\x3A\x04\x32\x04\x30";
const std::string moscow_plain =
"\xD0\x9C\xD0\xBE\xD1\x81\xD0\xBA\xD0\xB2\xD0\xB0";
Botan::DataSource_Memory input(moscow.data());
Botan::BER_Decoder dec(input);
Botan::ASN1_String str;
str.decode_from(dec);
result.test_eq("value()", str.value(), moscow_plain);
}
catch(const Botan::Decoding_Error &ex)
{
result.test_failure(ex.what());
}
return result;
}
Test::Result test_asn1_ucs4_parsing()
{
Test::Result result("ASN.1 universal string (UCS-4) parsing");
try
{
// \x1C - ASN1 tag for 'universal string'
// \x18 - 24 characters of payload
// ... - UCS-4 encoding for Moscow in cyrillic script
const Botan::byte moscow[] =
"\x1C\x18\x00\x00\x04\x1C\x00\x00\x04\x3E\x00\x00\x04\x41\x00\x00\x04\x3A\x00\x00\x04\x32\x00\x00\x04\x30";
const std::string moscow_plain =
"\xD0\x9C\xD0\xBE\xD1\x81\xD0\xBA\xD0\xB2\xD0\xB0";
Botan::DataSource_Memory input(moscow, sizeof(moscow));
Botan::BER_Decoder dec(input);
Botan::ASN1_String str;
str.decode_from(dec);
result.test_eq("value()", str.value(), moscow_plain);
}
catch(const Botan::Decoding_Error &ex)
{
result.test_failure(ex.what());
}
return result;
}
Test::Result test_asn1_ascii_encoding()
{
Test::Result result("ASN.1 ASCII encoding");
try
{
// UTF-8 encoded (ASCII chars only) word 'Moscow'
const std::string moscow =
"\x4D\x6F\x73\x63\x6F\x77";
Botan::ASN1_String str(moscow);
Botan::DER_Encoder enc;
str.encode_into(enc);
auto encodingResult = enc.get_contents();
// \x13 - ASN1 tag for 'printable string'
// \x06 - 6 characters of payload
const auto moscowEncoded = Botan::hex_decode("13064D6F73636F77");
result.test_eq("encoding result", encodingResult, moscowEncoded);
result.test_success("No crash");
}
catch(const std::exception &ex)
{
result.test_failure(ex.what());
}
return result;
}
Test::Result test_asn1_utf8_encoding()
{
Test::Result result("ASN.1 UTF-8 encoding");
try
{
// UTF-8 encoded russian word for Moscow in cyrillic script
const std::string moscow =
"\xD0\x9C\xD0\xBE\xD1\x81\xD0\xBA\xD0\xB2\xD0\xB0";
Botan::ASN1_String str(moscow);
Botan::DER_Encoder enc;
str.encode_into(enc);
auto encodingResult = enc.get_contents();
// \x0C - ASN1 tag for 'UTF8 string'
// \x0C - 12 characters of payload
const auto moscowEncoded =
Botan::hex_decode("0C0CD09CD0BED181D0BAD0B2D0B0");
result.test_eq("encoding result", encodingResult, moscowEncoded);
result.test_success("No crash");
}
catch(const std::exception &ex)
{
result.test_failure(ex.what());
}
return result;
}
}
class ASN1_Tests final : public Test
{
public:
std::vector<Test::Result> run() override
{
std::vector<Test::Result> results;
results.push_back(test_ber_stack_recursion());
results.push_back(test_asn1_utf8_ascii_parsing());
results.push_back(test_asn1_utf8_parsing());
results.push_back(test_asn1_ucs2_parsing());
results.push_back(test_asn1_ucs4_parsing());
results.push_back(test_asn1_ascii_encoding());
results.push_back(test_asn1_utf8_encoding());
return results;
}
};
BOTAN_REGISTER_TEST("asn1", ASN1_Tests);
#endif
}
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