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Merge pull request #4358 from randombit/jack/fix-fuzzer

Fix mp_redc_crandall fuzzer

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55.56
/src/fuzzer/x509_dn.cpp
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/*
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* (C) 2019 Jack Lloyd
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*
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* Botan is released under the Simplified BSD License (see license.txt)
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*/
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#include "fuzzers.h"










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#include <botan/ber_dec.h>










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#include <botan/pkix_types.h>










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void fuzz(std::span<const uint8_t> in) {




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   Botan::X509_DN dn1;




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   Botan::X509_DN dn2;




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   try {




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      Botan::BER_Decoder ber(in);




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      dn1.decode_from(ber);




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      dn2.decode_from(ber);




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   } catch(...) {




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      return;




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   }




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   const bool eq = dn1 == dn2;




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   const bool lt1 = dn1 < dn2;




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   const bool lt2 = dn2 < dn1;




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   if(lt1 == false && lt2 == false) {




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      FUZZER_ASSERT_TRUE(eq);




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   } else {










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      // one is less than the other










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      FUZZER_ASSERT_TRUE(lt1 || lt2);




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      // it is not the case that both are less than the other










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      FUZZER_ASSERT_TRUE(!lt1 || !lt2);




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   }










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}




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