Files
mtgodot-poc/third_party/cryptopp/dsa.cpp
T
shenleiandClaude Opus 5.5 a46093104c layout: restructure into src/ tests/ android/ scripts/ tools/
- extension/src/{port,platform,codepage} -> src/; native_render -> src/host
  (+ dxt, shaders/); libgr2 -> src/gr2; extension/third_party -> third_party
- extension/tests -> tests/port, libgr2/tests -> tests/gr2
- android-native -> android (build.sh, push-client.sh moved in)
- script -> scripts; tools/40250 -> tools/server; oracle -> tools/granny-oracle;
  perf tools -> tools/perf
- all build trees under build/ (native, release, android, port-gate)
- xrender:: CMake aliases -> mt::; port-map ledger impl paths rewritten

No code changes. ctest 15/15, port_gate macos+android PASS, port_map check 0 errors.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-29 19:08:19 +09:00

67 lines
1.3 KiB
C++

// dsa.cpp - originally written and placed in the public domain by Wei Dai
#include "pch.h"
#ifndef CRYPTOPP_IMPORTS
#include "dsa.h"
#include "asn.h"
#include "integer.h"
#include "filters.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();
}
NAMESPACE_END
#endif