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Diffstat (limited to 'SoftHSMv2/src/lib/crypto/BotanEDPublicKey.cpp')
| -rw-r--r-- | SoftHSMv2/src/lib/crypto/BotanEDPublicKey.cpp | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/SoftHSMv2/src/lib/crypto/BotanEDPublicKey.cpp b/SoftHSMv2/src/lib/crypto/BotanEDPublicKey.cpp new file mode 100644 index 0000000..3cf8474 --- /dev/null +++ b/SoftHSMv2/src/lib/crypto/BotanEDPublicKey.cpp @@ -0,0 +1,185 @@ +/* + * 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. + */ + +/***************************************************************************** + BotanEDPublicKey.cpp + + Botan EDDSA public key class + *****************************************************************************/ + +#include "config.h" +#ifdef WITH_EDDSA +#include "log.h" +#include "BotanEDPublicKey.h" +#include "BotanUtil.h" +#include "DerUtil.h" +#include <string.h> +#include <botan/curve25519.h> +#include <botan/ed25519.h> +// #include <botan/curve448.h> +// #include <botan/ed448.h> + +const Botan::OID x25519_oid("1.3.101.110"); +// const Botan::OID x448_oid("1.3.101.111"); +const Botan::OID ed25519_oid("1.3.101.112"); +// const Botan::OID ed448_oid("1.3.101.113"); + +// Constructors +BotanEDPublicKey::BotanEDPublicKey() +{ + edkey = NULL; +} + +BotanEDPublicKey::BotanEDPublicKey(const Botan::Public_Key* inEDKEY) +{ + edkey = NULL; + + setFromBotan(inEDKEY); +} + +// Destructor +BotanEDPublicKey::~BotanEDPublicKey() +{ + delete edkey; +} + +// The type +/*static*/ const char* BotanEDPublicKey::type = "Botan EDDSA Public Key"; + +// Get the base point order length +unsigned long BotanEDPublicKey::getOrderLength() const +{ + // Only Ed25519 is supported + return 32; +} + +// Set from Botan representation +void BotanEDPublicKey::setFromBotan(const Botan::Public_Key* inEDKEY) +{ + Botan::OID oid; + std::vector<uint8_t> pub; + + for (;;) + { + const Botan::Curve25519_PublicKey* x25519 = dynamic_cast<const Botan::Curve25519_PublicKey*>(inEDKEY); + if (x25519) { + oid = x25519_oid; + pub = x25519->public_value(); + break; + } + const Botan::Ed25519_PublicKey* ed25519 = dynamic_cast<const Botan::Ed25519_PublicKey*>(inEDKEY); + if (ed25519) { + oid = ed25519_oid; + pub = ed25519->get_public_key(); + break; + } + return; + } + ByteString inEC = BotanUtil::oid2ByteString(oid); + setEC(inEC); + ByteString inA; + inA.resize(pub.size()); + memcpy(&inA[0], &pub[0], pub.size()); + setA(DERUTIL::raw2Octet(inA)); +} + +// Check if the key is of the given type +bool BotanEDPublicKey::isOfType(const char* inType) +{ + return !strcmp(type, inType); +} + +// Setters for the EDDSA public key components +void BotanEDPublicKey::setEC(const ByteString& inEC) +{ + EDPublicKey::setEC(inEC); + + if (edkey) + { + delete edkey; + edkey = NULL; + } +} + +void BotanEDPublicKey::setA(const ByteString& inA) +{ + EDPublicKey::setA(inA); + + if (edkey) + { + delete edkey; + edkey = NULL; + } +} + +// Retrieve the Botan representation of the key +Botan::Public_Key* BotanEDPublicKey::getBotanKey() +{ + if (!edkey) + { + createBotanKey(); + } + + return edkey; +} + +// Create the Botan representation of the key +void BotanEDPublicKey::createBotanKey() +{ + if (ec.size() != 0 && + a.size() != 0) + { + if (edkey) + { + delete edkey; + edkey = NULL; + } + + try + { + ByteString raw = DERUTIL::octet2Raw(a); + size_t len = raw.size(); + if (len == 0) return; + + std::vector<uint8_t> pub(len); + memcpy(&pub[0], raw.const_byte_str(), len); + Botan::OID oid = BotanUtil::byteString2Oid(ec); + if (oid == x25519_oid) + { + edkey = new Botan::Curve25519_PublicKey(pub); + } + else if (oid == ed25519_oid) + { + edkey = new Botan::Ed25519_PublicKey(pub); + } + } + catch (...) + { + ERROR_MSG("Could not create the Botan public key"); + } + } +} +#endif |