diff options
Diffstat (limited to 'SoftHSMv2/src/lib/crypto/BotanDSAPublicKey.cpp')
| -rw-r--r-- | SoftHSMv2/src/lib/crypto/BotanDSAPublicKey.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/SoftHSMv2/src/lib/crypto/BotanDSAPublicKey.cpp b/SoftHSMv2/src/lib/crypto/BotanDSAPublicKey.cpp new file mode 100644 index 0000000..a1593d6 --- /dev/null +++ b/SoftHSMv2/src/lib/crypto/BotanDSAPublicKey.cpp @@ -0,0 +1,162 @@ +/* + * Copyright (c) 2010 .SE (The Internet Infrastructure Foundation) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER + * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/***************************************************************************** + BotanDSAPublicKey.cpp + + Botan DSA public key class + *****************************************************************************/ + +#include "config.h" +#include "log.h" +#include "BotanDSAPublicKey.h" +#include "BotanUtil.h" +#include <string.h> + +// Constructors +BotanDSAPublicKey::BotanDSAPublicKey() +{ + dsa = NULL; +} + +BotanDSAPublicKey::BotanDSAPublicKey(const Botan::DSA_PublicKey* inDSA) +{ + dsa = NULL; + + setFromBotan(inDSA); +} + +// Destructor +BotanDSAPublicKey::~BotanDSAPublicKey() +{ + delete dsa; +} + +// The type +/*static*/ const char* BotanDSAPublicKey::type = "Botan DSA Public Key"; + +// Set from Botan representation +void BotanDSAPublicKey::setFromBotan(const Botan::DSA_PublicKey* inDSA) +{ + ByteString inP = BotanUtil::bigInt2ByteString(inDSA->group_p()); + setP(inP); + ByteString inQ = BotanUtil::bigInt2ByteString(inDSA->group_q()); + setQ(inQ); + ByteString inG = BotanUtil::bigInt2ByteString(inDSA->group_g()); + setG(inG); + ByteString inY = BotanUtil::bigInt2ByteString(inDSA->get_y()); + setY(inY); +} + +// Check if the key is of the given type +bool BotanDSAPublicKey::isOfType(const char* inType) +{ + return !strcmp(type, inType); +} + +// Setters for the DSA public key components +void BotanDSAPublicKey::setP(const ByteString& inP) +{ + DSAPublicKey::setP(inP); + + if (dsa) + { + delete dsa; + dsa = NULL; + } +} + +void BotanDSAPublicKey::setQ(const ByteString& inQ) +{ + DSAPublicKey::setQ(inQ); + + if (dsa) + { + delete dsa; + dsa = NULL; + } +} + +void BotanDSAPublicKey::setG(const ByteString& inG) +{ + DSAPublicKey::setG(inG); + + if (dsa) + { + delete dsa; + dsa = NULL; + } +} + +void BotanDSAPublicKey::setY(const ByteString& inY) +{ + DSAPublicKey::setY(inY); + + if (dsa) + { + delete dsa; + dsa = NULL; + } +} + +// Retrieve the Botan representation of the key +Botan::DSA_PublicKey* BotanDSAPublicKey::getBotanKey() +{ + if (!dsa) + { + createBotanKey(); + } + + return dsa; +} + +// Create the Botan representation of the key +void BotanDSAPublicKey::createBotanKey() +{ + // We actually do not need to check q, since it can be set zero + if (p.size() != 0 && + g.size() != 0 && + y.size() != 0) + { + if (dsa) + { + delete dsa; + dsa = NULL; + } + + try + { + dsa = new Botan::DSA_PublicKey(Botan::DL_Group(BotanUtil::byteString2bigInt(p), + BotanUtil::byteString2bigInt(q), + BotanUtil::byteString2bigInt(g)), + BotanUtil::byteString2bigInt(y)); + } + catch (...) + { + ERROR_MSG("Could not create the Botan public key"); + } + } +} |