diff options
| author | Kirill Volinsky <mataes2007@gmail.com> | 2012-07-20 16:21:49 +0000 |
|---|---|---|
| committer | Kirill Volinsky <mataes2007@gmail.com> | 2012-07-20 16:21:49 +0000 |
| commit | f424a18112032cf61d2871a6b91a5af607c171ae (patch) | |
| tree | 88fedc4e28941ceecda7026f0b06eba6271f91d5 /plugins/CryptoPP/crypto/dsa.cpp | |
| parent | bfe1bd0fc087be44c70904aee0fe4276643d206d (diff) | |
CryptoPP:
changed folder structure
git-svn-id: http://svn.miranda-ng.org/main/trunk@1083 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
Diffstat (limited to 'plugins/CryptoPP/crypto/dsa.cpp')
| -rw-r--r-- | plugins/CryptoPP/crypto/dsa.cpp | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/plugins/CryptoPP/crypto/dsa.cpp b/plugins/CryptoPP/crypto/dsa.cpp deleted file mode 100644 index 4b130d723f..0000000000 --- a/plugins/CryptoPP/crypto/dsa.cpp +++ /dev/null @@ -1,119 +0,0 @@ -// dsa.cpp - written and placed in the public domain by Wei Dai
-
-#include "pch.h"
-
-#ifndef CRYPTOPP_IMPORTS
-
-#include "dsa.h"
-#include "nbtheory.h"
-
-NAMESPACE_BEGIN(CryptoPP)
-
-size_t DSAConvertSignatureFormat(byte *buffer, size_t bufferSize, DSASignatureFormat toFormat, const byte *signature, size_t signatureLen, DSASignatureFormat fromFormat)
-{
- Integer r, s;
- StringStore store(signature, signatureLen);
- ArraySink sink(buffer, bufferSize);
-
- switch (fromFormat)
- {
- case DSA_P1363:
- r.Decode(store, signatureLen/2);
- s.Decode(store, signatureLen/2);
- break;
- case DSA_DER:
- {
- BERSequenceDecoder seq(store);
- r.BERDecode(seq);
- s.BERDecode(seq);
- seq.MessageEnd();
- break;
- }
- case DSA_OPENPGP:
- r.OpenPGPDecode(store);
- s.OpenPGPDecode(store);
- break;
- }
-
- switch (toFormat)
- {
- case DSA_P1363:
- r.Encode(sink, bufferSize/2);
- s.Encode(sink, bufferSize/2);
- break;
- case DSA_DER:
- {
- DERSequenceEncoder seq(sink);
- r.DEREncode(seq);
- s.DEREncode(seq);
- seq.MessageEnd();
- break;
- }
- case DSA_OPENPGP:
- r.OpenPGPEncode(sink);
- s.OpenPGPEncode(sink);
- break;
- }
-
- return (size_t)sink.TotalPutLength();
-}
-
-bool DSA::GeneratePrimes(const byte *seedIn, unsigned int g, int &counter,
- Integer &p, unsigned int L, Integer &q, bool useInputCounterValue)
-{
- assert(g%8 == 0);
-
- SHA sha;
- SecByteBlock seed(seedIn, g/8);
- SecByteBlock U(SHA::DIGESTSIZE);
- SecByteBlock temp(SHA::DIGESTSIZE);
- SecByteBlock W(((L-1)/160+1) * SHA::DIGESTSIZE);
- const int n = (L-1) / 160;
- const int b = (L-1) % 160;
- Integer X;
-
- sha.CalculateDigest(U, seed, g/8);
-
- for (int i=g/8-1, carry=true; i>=0 && carry; i--)
- carry=!++seed[i];
-
- sha.CalculateDigest(temp, seed, g/8);
- xorbuf(U, temp, SHA::DIGESTSIZE);
-
- U[0] |= 0x80;
- U[SHA::DIGESTSIZE-1] |= 1;
- q.Decode(U, SHA::DIGESTSIZE);
-
- if (!IsPrime(q))
- return false;
-
- int counterEnd = useInputCounterValue ? counter+1 : 4096;
-
- for (int c = 0; c < counterEnd; c++)
- {
- for (int k=0; k<=n; k++)
- {
- for (int i=g/8-1, carry=true; i>=0 && carry; i--)
- carry=!++seed[i];
- if (!useInputCounterValue || c == counter)
- sha.CalculateDigest(W+(n-k)*SHA::DIGESTSIZE, seed, g/8);
- }
- if (!useInputCounterValue || c == counter)
- {
- W[SHA::DIGESTSIZE - 1 - b/8] |= 0x80;
- X.Decode(W + SHA::DIGESTSIZE - 1 - b/8, L/8);
- p = X-((X % (2*q))-1);
-
- if (p.GetBit(L-1) && IsPrime(p))
- {
- counter = c;
- return true;
- }
- }
- }
- return false;
-}
-
-NAMESPACE_END
-
-#endif
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