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  • Committer: weidai
  • Date: 2003-07-29 01:18:33 UTC
  • Revision ID: svn-v4:57ff6487-cd31-0410-9ec3-f628ee90f5f0:trunk/c5:118
fix potential threading problem with initialization of static objects

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Lines of Context:
oaep.cpp
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// ********************************************************
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size_t OAEP_Base::MaxUnpaddedLength(size_t paddedLength) const
 
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unsigned int OAEP_Base::MaxUnpaddedLength(unsigned int paddedLength) const
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{
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        return SaturatingSubtract(paddedLength/8, 1+2*DigestSize());
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}
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void OAEP_Base::Pad(RandomNumberGenerator &rng, const byte *input, size_t inputLength, byte *oaepBlock, size_t oaepBlockLen, const NameValuePairs &parameters) const
 
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void OAEP_Base::Pad(RandomNumberGenerator &rng, const byte *input, unsigned int inputLength, byte *oaepBlock, unsigned int oaepBlockLen, const NameValuePairs &parameters) const
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{
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        assert (inputLength <= MaxUnpaddedLength(oaepBlockLen));
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        oaepBlockLen /= 8;
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        std::auto_ptr<HashTransformation> pHash(NewHash());
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        const size_t hLen = pHash->DigestSize();
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        const size_t seedLen = hLen, dbLen = oaepBlockLen-seedLen;
 
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        const unsigned int hLen = pHash->DigestSize();
 
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        const unsigned int seedLen = hLen, dbLen = oaepBlockLen-seedLen;
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        byte *const maskedSeed = oaepBlock;
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        byte *const maskedDB = oaepBlock+seedLen;
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        pMGF->GenerateAndMask(*pHash, maskedSeed, seedLen, maskedDB, dbLen);
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}
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DecodingResult OAEP_Base::Unpad(const byte *oaepBlock, size_t oaepBlockLen, byte *output, const NameValuePairs &parameters) const
 
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DecodingResult OAEP_Base::Unpad(const byte *oaepBlock, unsigned int oaepBlockLen, byte *output, const NameValuePairs &parameters) const
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{
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        bool invalid = false;
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        oaepBlockLen /= 8;
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        std::auto_ptr<HashTransformation> pHash(NewHash());
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        const size_t hLen = pHash->DigestSize();
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        const size_t seedLen = hLen, dbLen = oaepBlockLen-seedLen;
 
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        const unsigned int hLen = pHash->DigestSize();
 
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        const unsigned int seedLen = hLen, dbLen = oaepBlockLen-seedLen;
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        invalid = (oaepBlockLen < 2*hLen+1) || invalid;
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