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Diffstat (limited to 'SoftHSMv2/src/lib/crypto/OSSLECPublicKey.cpp')
| -rw-r--r-- | SoftHSMv2/src/lib/crypto/OSSLECPublicKey.cpp | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/SoftHSMv2/src/lib/crypto/OSSLECPublicKey.cpp b/SoftHSMv2/src/lib/crypto/OSSLECPublicKey.cpp new file mode 100644 index 0000000..b2d80af --- /dev/null +++ b/SoftHSMv2/src/lib/crypto/OSSLECPublicKey.cpp @@ -0,0 +1,131 @@ +/* + * Copyright (c) 2010 SURFnet bv + * 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. + */ + +/***************************************************************************** + OSSLECPublicKey.cpp + + OpenSSL Elliptic Curve public key class + *****************************************************************************/ + +#include "config.h" +#ifdef WITH_ECC +#include "log.h" +#include "OSSLECPublicKey.h" +#include "OSSLUtil.h" +#include <openssl/bn.h> +#include <string.h> + +// Constructors +OSSLECPublicKey::OSSLECPublicKey() +{ + eckey = EC_KEY_new(); +} + +OSSLECPublicKey::OSSLECPublicKey(const EC_KEY* inECKEY) +{ + eckey = EC_KEY_new(); + + setFromOSSL(inECKEY); +} + +// Destructor +OSSLECPublicKey::~OSSLECPublicKey() +{ + EC_KEY_free(eckey); +} + +// The type +/*static*/ const char* OSSLECPublicKey::type = "OpenSSL EC Public Key"; + +// Get the base point order length +unsigned long OSSLECPublicKey::getOrderLength() const +{ + const EC_GROUP* grp = EC_KEY_get0_group(eckey); + if (grp != NULL) + { + BIGNUM* order = BN_new(); + if (order == NULL) + return 0; + if (!EC_GROUP_get_order(grp, order, NULL)) + { + BN_clear_free(order); + return 0; + } + unsigned long len = BN_num_bytes(order); + BN_clear_free(order); + return len; + } + return 0; +} + +// Set from OpenSSL representation +void OSSLECPublicKey::setFromOSSL(const EC_KEY* inECKEY) +{ + const EC_GROUP* grp = EC_KEY_get0_group(inECKEY); + if (grp != NULL) + { + ByteString inEC = OSSL::grp2ByteString(grp); + setEC(inEC); + } + const EC_POINT* pub = EC_KEY_get0_public_key(inECKEY); + if (pub != NULL && grp != NULL) + { + ByteString inQ = OSSL::pt2ByteString(pub, grp); + setQ(inQ); + } +} + +// Check if the key is of the given type +bool OSSLECPublicKey::isOfType(const char* inType) +{ + return !strcmp(type, inType); +} + +// Setters for the EC public key components +void OSSLECPublicKey::setEC(const ByteString& inEC) +{ + ECPublicKey::setEC(inEC); + + EC_GROUP* grp = OSSL::byteString2grp(inEC); + EC_KEY_set_group(eckey, grp); + EC_GROUP_free(grp); +} + +void OSSLECPublicKey::setQ(const ByteString& inQ) +{ + ECPublicKey::setQ(inQ); + + EC_POINT* pub = OSSL::byteString2pt(inQ, EC_KEY_get0_group(eckey)); + EC_KEY_set_public_key(eckey, pub); + EC_POINT_free(pub); +} + +// Retrieve the OpenSSL representation of the key +EC_KEY* OSSLECPublicKey::getOSSLKey() +{ + return eckey; +} +#endif |