mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-10-31 09:20:38 +00:00
619 lines
20 KiB
C++
619 lines
20 KiB
C++
#include <time.h>
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#include <stdio.h>
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#include "Crypto.h"
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#include "I2PEndian.h"
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#include "Log.h"
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#include "Identity.h"
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namespace i2p
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{
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namespace data
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{
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Identity& Identity::operator=(const Keys& keys)
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{
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// copy public and signing keys together
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memcpy (publicKey, keys.publicKey, sizeof (publicKey) + sizeof (signingKey));
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memset (certificate, 0, sizeof (certificate));
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return *this;
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}
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size_t Identity::FromBuffer (const uint8_t * buf, size_t len)
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{
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if ( len < DEFAULT_IDENTITY_SIZE ) {
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// buffer too small, don't overflow
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return 0;
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}
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memcpy (publicKey, buf, DEFAULT_IDENTITY_SIZE);
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return DEFAULT_IDENTITY_SIZE;
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}
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IdentHash Identity::Hash () const
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{
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IdentHash hash;
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SHA256(publicKey, DEFAULT_IDENTITY_SIZE, hash);
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return hash;
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}
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IdentityEx::IdentityEx ():
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m_IsVerifierCreated (false), m_ExtendedLen (0), m_ExtendedBuffer (nullptr)
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{
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}
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IdentityEx::IdentityEx(const uint8_t * publicKey, const uint8_t * signingKey, SigningKeyType type):
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m_IsVerifierCreated (false)
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{
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memcpy (m_StandardIdentity.publicKey, publicKey, sizeof (m_StandardIdentity.publicKey));
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if (type != SIGNING_KEY_TYPE_DSA_SHA1)
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{
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size_t excessLen = 0;
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uint8_t * excessBuf = nullptr;
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switch (type)
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{
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case SIGNING_KEY_TYPE_ECDSA_SHA256_P256:
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{
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size_t padding = 128 - i2p::crypto::ECDSAP256_KEY_LENGTH; // 64 = 128 - 64
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RAND_bytes (m_StandardIdentity.signingKey, padding);
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memcpy (m_StandardIdentity.signingKey + padding, signingKey, i2p::crypto::ECDSAP256_KEY_LENGTH);
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break;
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}
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case SIGNING_KEY_TYPE_ECDSA_SHA384_P384:
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{
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size_t padding = 128 - i2p::crypto::ECDSAP384_KEY_LENGTH; // 32 = 128 - 96
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RAND_bytes (m_StandardIdentity.signingKey, padding);
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memcpy (m_StandardIdentity.signingKey + padding, signingKey, i2p::crypto::ECDSAP384_KEY_LENGTH);
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break;
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}
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case SIGNING_KEY_TYPE_ECDSA_SHA512_P521:
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{
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memcpy (m_StandardIdentity.signingKey, signingKey, 128);
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excessLen = i2p::crypto::ECDSAP521_KEY_LENGTH - 128; // 4 = 132 - 128
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excessBuf = new uint8_t[excessLen];
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memcpy (excessBuf, signingKey + 128, excessLen);
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break;
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}
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case SIGNING_KEY_TYPE_RSA_SHA256_2048:
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{
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memcpy (m_StandardIdentity.signingKey, signingKey, 128);
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excessLen = i2p::crypto::RSASHA2562048_KEY_LENGTH - 128; // 128 = 256 - 128
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excessBuf = new uint8_t[excessLen];
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memcpy (excessBuf, signingKey + 128, excessLen);
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break;
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}
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case SIGNING_KEY_TYPE_RSA_SHA384_3072:
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{
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memcpy (m_StandardIdentity.signingKey, signingKey, 128);
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excessLen = i2p::crypto::RSASHA3843072_KEY_LENGTH - 128; // 256 = 384 - 128
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excessBuf = new uint8_t[excessLen];
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memcpy (excessBuf, signingKey + 128, excessLen);
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break;
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}
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case SIGNING_KEY_TYPE_RSA_SHA512_4096:
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{
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memcpy (m_StandardIdentity.signingKey, signingKey, 128);
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excessLen = i2p::crypto::RSASHA5124096_KEY_LENGTH - 128; // 384 = 512 - 128
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excessBuf = new uint8_t[excessLen];
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memcpy (excessBuf, signingKey + 128, excessLen);
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break;
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}
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case SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519:
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{
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size_t padding = 128 - i2p::crypto::EDDSA25519_PUBLIC_KEY_LENGTH; // 96 = 128 - 32
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RAND_bytes (m_StandardIdentity.signingKey, padding);
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memcpy (m_StandardIdentity.signingKey + padding, signingKey, i2p::crypto::EDDSA25519_PUBLIC_KEY_LENGTH);
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break;
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}
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default:
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LogPrint (eLogError, "Identity: Signing key type ", (int)type, " is not supported");
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}
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m_ExtendedLen = 4 + excessLen; // 4 bytes extra + excess length
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// fill certificate
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m_StandardIdentity.certificate[0] = CERTIFICATE_TYPE_KEY;
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htobe16buf (m_StandardIdentity.certificate + 1, m_ExtendedLen);
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// fill extended buffer
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m_ExtendedBuffer = new uint8_t[m_ExtendedLen];
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htobe16buf (m_ExtendedBuffer, type);
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htobe16buf (m_ExtendedBuffer + 2, CRYPTO_KEY_TYPE_ELGAMAL);
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if (excessLen && excessBuf)
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{
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memcpy (m_ExtendedBuffer + 4, excessBuf, excessLen);
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delete[] excessBuf;
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}
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// calculate ident hash
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uint8_t * buf = new uint8_t[GetFullLen ()];
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ToBuffer (buf, GetFullLen ());
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SHA256(buf, GetFullLen (), m_IdentHash);
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delete[] buf;
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}
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else // DSA-SHA1
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{
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memcpy (m_StandardIdentity.signingKey, signingKey, sizeof (m_StandardIdentity.signingKey));
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memset (m_StandardIdentity.certificate, 0, sizeof (m_StandardIdentity.certificate));
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m_IdentHash = m_StandardIdentity.Hash ();
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m_ExtendedLen = 0;
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m_ExtendedBuffer = nullptr;
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}
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CreateVerifier ();
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}
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IdentityEx::IdentityEx (const uint8_t * buf, size_t len):
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m_IsVerifierCreated (false), m_ExtendedLen (0), m_ExtendedBuffer (nullptr)
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{
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FromBuffer (buf, len);
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}
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IdentityEx::IdentityEx (const IdentityEx& other):
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m_IsVerifierCreated (false), m_ExtendedLen (0), m_ExtendedBuffer (nullptr)
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{
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*this = other;
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}
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IdentityEx::IdentityEx (const Identity& standard):
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m_IsVerifierCreated (false), m_ExtendedLen (0), m_ExtendedBuffer (nullptr)
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{
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*this = standard;
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}
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IdentityEx::~IdentityEx ()
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{
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delete[] m_ExtendedBuffer;
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}
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IdentityEx& IdentityEx::operator=(const IdentityEx& other)
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{
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memcpy (&m_StandardIdentity, &other.m_StandardIdentity, DEFAULT_IDENTITY_SIZE);
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m_IdentHash = other.m_IdentHash;
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delete[] m_ExtendedBuffer;
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m_ExtendedLen = other.m_ExtendedLen;
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if (m_ExtendedLen > 0)
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{
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m_ExtendedBuffer = new uint8_t[m_ExtendedLen];
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memcpy (m_ExtendedBuffer, other.m_ExtendedBuffer, m_ExtendedLen);
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}
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else
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m_ExtendedBuffer = nullptr;
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m_Verifier = nullptr;
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m_IsVerifierCreated = false;
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return *this;
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}
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IdentityEx& IdentityEx::operator=(const Identity& standard)
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{
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m_StandardIdentity = standard;
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m_IdentHash = m_StandardIdentity.Hash ();
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delete[] m_ExtendedBuffer;
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m_ExtendedBuffer = nullptr;
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m_ExtendedLen = 0;
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m_Verifier = nullptr;
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m_IsVerifierCreated = false;
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return *this;
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}
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size_t IdentityEx::FromBuffer (const uint8_t * buf, size_t len)
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{
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if (len < DEFAULT_IDENTITY_SIZE)
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{
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LogPrint (eLogError, "Identity: buffer length ", len, " is too small");
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return 0;
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}
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memcpy (&m_StandardIdentity, buf, DEFAULT_IDENTITY_SIZE);
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if(m_ExtendedBuffer) delete[] m_ExtendedBuffer;
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m_ExtendedBuffer = nullptr;
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m_ExtendedLen = bufbe16toh (m_StandardIdentity.certificate + 1);
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if (m_ExtendedLen)
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{
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if (m_ExtendedLen + DEFAULT_IDENTITY_SIZE <= len)
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{
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m_ExtendedBuffer = new uint8_t[m_ExtendedLen];
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memcpy (m_ExtendedBuffer, buf + DEFAULT_IDENTITY_SIZE, m_ExtendedLen);
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}
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else
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{
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LogPrint (eLogError, "Identity: Certificate length ", m_ExtendedLen, " exceeds buffer length ", len - DEFAULT_IDENTITY_SIZE);
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m_ExtendedLen = 0;
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return 0;
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}
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}
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else
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{
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m_ExtendedLen = 0;
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m_ExtendedBuffer = nullptr;
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}
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SHA256(buf, GetFullLen (), m_IdentHash);
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m_Verifier = nullptr;
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return GetFullLen ();
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}
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size_t IdentityEx::ToBuffer (uint8_t * buf, size_t len) const
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{
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const size_t fullLen = GetFullLen();
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if (fullLen > len) return 0; // buffer is too small and may overflow somewhere else
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memcpy (buf, &m_StandardIdentity, DEFAULT_IDENTITY_SIZE);
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if (m_ExtendedLen > 0 && m_ExtendedBuffer)
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memcpy (buf + DEFAULT_IDENTITY_SIZE, m_ExtendedBuffer, m_ExtendedLen);
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return fullLen;
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}
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size_t IdentityEx::FromBase64(const std::string& s)
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{
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const size_t slen = s.length();
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std::vector<uint8_t> buf(slen); // binary data can't exceed base64
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const size_t len = Base64ToByteStream (s.c_str(), slen, buf.data(), slen);
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return FromBuffer (buf.data(), len);
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}
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std::string IdentityEx::ToBase64 () const
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{
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const size_t bufLen = GetFullLen();
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const size_t strLen = Base64EncodingBufferSize(bufLen);
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std::vector<uint8_t> buf(bufLen);
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std::vector<char> str(strLen);
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size_t l = ToBuffer (buf.data(), bufLen);
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size_t l1 = i2p::data::ByteStreamToBase64 (buf.data(), l, str.data(), strLen);
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return std::string (str.data(), l1);
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}
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size_t IdentityEx::GetSigningPublicKeyLen () const
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{
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if (!m_Verifier) CreateVerifier ();
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if (m_Verifier)
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return m_Verifier->GetPublicKeyLen ();
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return 128;
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}
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size_t IdentityEx::GetSigningPrivateKeyLen () const
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{
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if (!m_Verifier) CreateVerifier ();
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if (m_Verifier)
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return m_Verifier->GetPrivateKeyLen ();
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return GetSignatureLen ()/2;
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}
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size_t IdentityEx::GetSignatureLen () const
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{
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if (!m_Verifier) CreateVerifier ();
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if (m_Verifier)
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return m_Verifier->GetSignatureLen ();
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return i2p::crypto::DSA_SIGNATURE_LENGTH;
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}
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bool IdentityEx::Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const
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{
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if (!m_Verifier) CreateVerifier ();
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if (m_Verifier)
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return m_Verifier->Verify (buf, len, signature);
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return false;
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}
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SigningKeyType IdentityEx::GetSigningKeyType () const
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{
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if (m_StandardIdentity.certificate[0] == CERTIFICATE_TYPE_KEY && m_ExtendedBuffer)
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return bufbe16toh (m_ExtendedBuffer); // signing key
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return SIGNING_KEY_TYPE_DSA_SHA1;
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}
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CryptoKeyType IdentityEx::GetCryptoKeyType () const
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{
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if (m_StandardIdentity.certificate[0] == CERTIFICATE_TYPE_KEY && m_ExtendedBuffer)
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return bufbe16toh (m_ExtendedBuffer + 2); // crypto key
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return CRYPTO_KEY_TYPE_ELGAMAL;
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}
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void IdentityEx::CreateVerifier () const
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{
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if (m_Verifier) return; // don't create again
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auto keyType = GetSigningKeyType ();
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switch (keyType)
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{
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case SIGNING_KEY_TYPE_DSA_SHA1:
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UpdateVerifier (new i2p::crypto::DSAVerifier (m_StandardIdentity.signingKey));
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break;
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case SIGNING_KEY_TYPE_ECDSA_SHA256_P256:
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{
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size_t padding = 128 - i2p::crypto::ECDSAP256_KEY_LENGTH; // 64 = 128 - 64
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UpdateVerifier (new i2p::crypto::ECDSAP256Verifier (m_StandardIdentity.signingKey + padding));
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break;
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}
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case SIGNING_KEY_TYPE_ECDSA_SHA384_P384:
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{
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size_t padding = 128 - i2p::crypto::ECDSAP384_KEY_LENGTH; // 32 = 128 - 96
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UpdateVerifier (new i2p::crypto::ECDSAP384Verifier (m_StandardIdentity.signingKey + padding));
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break;
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}
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case SIGNING_KEY_TYPE_ECDSA_SHA512_P521:
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{
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uint8_t signingKey[i2p::crypto::ECDSAP521_KEY_LENGTH];
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memcpy (signingKey, m_StandardIdentity.signingKey, 128);
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size_t excessLen = i2p::crypto::ECDSAP521_KEY_LENGTH - 128; // 4 = 132- 128
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memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types
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UpdateVerifier (new i2p::crypto::ECDSAP521Verifier (signingKey));
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break;
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}
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case SIGNING_KEY_TYPE_RSA_SHA256_2048:
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{
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uint8_t signingKey[i2p::crypto::RSASHA2562048_KEY_LENGTH];
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memcpy (signingKey, m_StandardIdentity.signingKey, 128);
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size_t excessLen = i2p::crypto::RSASHA2562048_KEY_LENGTH - 128; // 128 = 256- 128
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memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types
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UpdateVerifier (new i2p::crypto:: RSASHA2562048Verifier (signingKey));
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break;
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}
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case SIGNING_KEY_TYPE_RSA_SHA384_3072:
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{
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uint8_t signingKey[i2p::crypto::RSASHA3843072_KEY_LENGTH];
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memcpy (signingKey, m_StandardIdentity.signingKey, 128);
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size_t excessLen = i2p::crypto::RSASHA3843072_KEY_LENGTH - 128; // 256 = 384- 128
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memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types
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UpdateVerifier (new i2p::crypto:: RSASHA3843072Verifier (signingKey));
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break;
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}
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case SIGNING_KEY_TYPE_RSA_SHA512_4096:
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{
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uint8_t signingKey[i2p::crypto::RSASHA5124096_KEY_LENGTH];
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memcpy (signingKey, m_StandardIdentity.signingKey, 128);
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size_t excessLen = i2p::crypto::RSASHA5124096_KEY_LENGTH - 128; // 384 = 512- 128
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memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types
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UpdateVerifier (new i2p::crypto:: RSASHA5124096Verifier (signingKey));
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break;
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}
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case SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519:
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{
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size_t padding = 128 - i2p::crypto::EDDSA25519_PUBLIC_KEY_LENGTH; // 96 = 128 - 32
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UpdateVerifier (new i2p::crypto::EDDSA25519Verifier (m_StandardIdentity.signingKey + padding));
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break;
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}
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default:
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LogPrint (eLogError, "Identity: Signing key type ", (int)keyType, " is not supported");
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}
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}
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void IdentityEx::UpdateVerifier (i2p::crypto::Verifier * verifier) const
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{
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if (!m_Verifier)
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{
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auto created = m_IsVerifierCreated.exchange (true);
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if (!created)
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m_Verifier.reset (verifier);
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else
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{
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delete verifier;
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int count = 0;
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while (!m_Verifier && count < 500) // 5 seconds
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{
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std::this_thread::sleep_for (std::chrono::milliseconds(10));
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count++;
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}
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if (!m_Verifier)
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LogPrint (eLogError, "Identity: couldn't get verifier in 5 seconds");
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}
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}
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else
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delete verifier;
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}
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void IdentityEx::DropVerifier () const
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{
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// TODO: potential race condition with Verify
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m_IsVerifierCreated = false;
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m_Verifier = nullptr;
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}
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PrivateKeys& PrivateKeys::operator=(const Keys& keys)
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{
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m_Public = std::make_shared<IdentityEx>(Identity (keys));
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memcpy (m_PrivateKey, keys.privateKey, 256); // 256
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memcpy (m_SigningPrivateKey, keys.signingPrivateKey, m_Public->GetSigningPrivateKeyLen ());
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m_Signer = nullptr;
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CreateSigner ();
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return *this;
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}
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PrivateKeys& PrivateKeys::operator=(const PrivateKeys& other)
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{
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m_Public = std::make_shared<IdentityEx>(*other.m_Public);
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memcpy (m_PrivateKey, other.m_PrivateKey, 256); // 256
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memcpy (m_SigningPrivateKey, other.m_SigningPrivateKey, m_Public->GetSigningPrivateKeyLen ());
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m_Signer = nullptr;
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CreateSigner ();
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return *this;
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}
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size_t PrivateKeys::FromBuffer (const uint8_t * buf, size_t len)
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{
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m_Public = std::make_shared<IdentityEx>(buf, len);
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size_t ret = m_Public->GetFullLen ();
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memcpy (m_PrivateKey, buf + ret, 256); // private key always 256
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ret += 256;
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size_t signingPrivateKeySize = m_Public->GetSigningPrivateKeyLen ();
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if(signingPrivateKeySize + ret > len) return 0; // overflow
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memcpy (m_SigningPrivateKey, buf + ret, signingPrivateKeySize);
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ret += signingPrivateKeySize;
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m_Signer = nullptr;
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CreateSigner ();
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return ret;
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}
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size_t PrivateKeys::ToBuffer (uint8_t * buf, size_t len) const
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{
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size_t ret = m_Public->ToBuffer (buf, len);
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memcpy (buf + ret, m_PrivateKey, 256); // private key always 256
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ret += 256;
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size_t signingPrivateKeySize = m_Public->GetSigningPrivateKeyLen ();
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if(ret + signingPrivateKeySize > len) return 0; // overflow
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memcpy (buf + ret, m_SigningPrivateKey, signingPrivateKeySize);
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ret += signingPrivateKeySize;
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return ret;
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}
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size_t PrivateKeys::FromBase64(const std::string& s)
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{
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uint8_t * buf = new uint8_t[s.length ()];
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size_t l = i2p::data::Base64ToByteStream (s.c_str (), s.length (), buf, s.length ());
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size_t ret = FromBuffer (buf, l);
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delete[] buf;
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return ret;
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}
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std::string PrivateKeys::ToBase64 () const
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{
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uint8_t * buf = new uint8_t[GetFullLen ()];
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char * str = new char[GetFullLen ()*2];
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size_t l = ToBuffer (buf, GetFullLen ());
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size_t l1 = i2p::data::ByteStreamToBase64 (buf, l, str, GetFullLen ()*2);
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|
str[l1] = 0;
|
|
delete[] buf;
|
|
std::string ret(str);
|
|
delete[] str;
|
|
return ret;
|
|
}
|
|
|
|
void PrivateKeys::Sign (const uint8_t * buf, int len, uint8_t * signature) const
|
|
{
|
|
if (!m_Signer)
|
|
CreateSigner();
|
|
m_Signer->Sign (buf, len, signature);
|
|
}
|
|
|
|
void PrivateKeys::CreateSigner () const
|
|
{
|
|
if (m_Signer) return;
|
|
switch (m_Public->GetSigningKeyType ())
|
|
{
|
|
case SIGNING_KEY_TYPE_DSA_SHA1:
|
|
m_Signer.reset (new i2p::crypto::DSASigner (m_SigningPrivateKey, m_Public->GetStandardIdentity ().signingKey));
|
|
break;
|
|
case SIGNING_KEY_TYPE_ECDSA_SHA256_P256:
|
|
m_Signer.reset (new i2p::crypto::ECDSAP256Signer (m_SigningPrivateKey));
|
|
break;
|
|
case SIGNING_KEY_TYPE_ECDSA_SHA384_P384:
|
|
m_Signer.reset (new i2p::crypto::ECDSAP384Signer (m_SigningPrivateKey));
|
|
break;
|
|
case SIGNING_KEY_TYPE_ECDSA_SHA512_P521:
|
|
m_Signer.reset (new i2p::crypto::ECDSAP521Signer (m_SigningPrivateKey));
|
|
break;
|
|
case SIGNING_KEY_TYPE_RSA_SHA256_2048:
|
|
m_Signer.reset (new i2p::crypto::RSASHA2562048Signer (m_SigningPrivateKey));
|
|
break;
|
|
case SIGNING_KEY_TYPE_RSA_SHA384_3072:
|
|
m_Signer.reset (new i2p::crypto::RSASHA3843072Signer (m_SigningPrivateKey));
|
|
break;
|
|
case SIGNING_KEY_TYPE_RSA_SHA512_4096:
|
|
m_Signer.reset (new i2p::crypto::RSASHA5124096Signer (m_SigningPrivateKey));
|
|
break;
|
|
case SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519:
|
|
m_Signer.reset (new i2p::crypto::EDDSA25519Signer (m_SigningPrivateKey, m_Public->GetStandardIdentity ().certificate - i2p::crypto::EDDSA25519_PUBLIC_KEY_LENGTH));
|
|
break;
|
|
default:
|
|
LogPrint (eLogError, "Identity: Signing key type ", (int)m_Public->GetSigningKeyType (), " is not supported");
|
|
}
|
|
}
|
|
|
|
PrivateKeys PrivateKeys::CreateRandomKeys (SigningKeyType type)
|
|
{
|
|
if (type != SIGNING_KEY_TYPE_DSA_SHA1)
|
|
{
|
|
PrivateKeys keys;
|
|
// signature
|
|
uint8_t signingPublicKey[512]; // signing public key is 512 bytes max
|
|
switch (type)
|
|
{
|
|
case SIGNING_KEY_TYPE_ECDSA_SHA256_P256:
|
|
i2p::crypto::CreateECDSAP256RandomKeys (keys.m_SigningPrivateKey, signingPublicKey);
|
|
break;
|
|
case SIGNING_KEY_TYPE_ECDSA_SHA384_P384:
|
|
i2p::crypto::CreateECDSAP384RandomKeys (keys.m_SigningPrivateKey, signingPublicKey);
|
|
break;
|
|
case SIGNING_KEY_TYPE_ECDSA_SHA512_P521:
|
|
i2p::crypto::CreateECDSAP521RandomKeys (keys.m_SigningPrivateKey, signingPublicKey);
|
|
break;
|
|
case SIGNING_KEY_TYPE_RSA_SHA256_2048:
|
|
i2p::crypto::CreateRSARandomKeys (i2p::crypto::RSASHA2562048_KEY_LENGTH, keys.m_SigningPrivateKey, signingPublicKey);
|
|
break;
|
|
case SIGNING_KEY_TYPE_RSA_SHA384_3072:
|
|
i2p::crypto::CreateRSARandomKeys (i2p::crypto::RSASHA3843072_KEY_LENGTH, keys.m_SigningPrivateKey, signingPublicKey);
|
|
break;
|
|
case SIGNING_KEY_TYPE_RSA_SHA512_4096:
|
|
i2p::crypto::CreateRSARandomKeys (i2p::crypto::RSASHA5124096_KEY_LENGTH, keys.m_SigningPrivateKey, signingPublicKey);
|
|
break;
|
|
case SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519:
|
|
i2p::crypto::CreateEDDSA25519RandomKeys (keys.m_SigningPrivateKey, signingPublicKey);
|
|
break;
|
|
default:
|
|
LogPrint (eLogError, "Identity: Signing key type ", (int)type, " is not supported. Create DSA-SHA1");
|
|
return PrivateKeys (i2p::data::CreateRandomKeys ()); // DSA-SHA1
|
|
}
|
|
// encryption
|
|
uint8_t publicKey[256];
|
|
i2p::crypto::GenerateElGamalKeyPair (keys.m_PrivateKey, publicKey);
|
|
// identity
|
|
keys.m_Public = std::make_shared<IdentityEx> (publicKey, signingPublicKey, type);
|
|
|
|
keys.CreateSigner ();
|
|
return keys;
|
|
}
|
|
return PrivateKeys (i2p::data::CreateRandomKeys ()); // DSA-SHA1
|
|
}
|
|
|
|
Keys CreateRandomKeys ()
|
|
{
|
|
Keys keys;
|
|
// encryption
|
|
i2p::crypto::GenerateElGamalKeyPair(keys.privateKey, keys.publicKey);
|
|
// signing
|
|
i2p::crypto::CreateDSARandomKeys (keys.signingPrivateKey, keys.signingKey);
|
|
return keys;
|
|
}
|
|
|
|
IdentHash CreateRoutingKey (const IdentHash& ident)
|
|
{
|
|
uint8_t buf[41]; // ident + yyyymmdd
|
|
memcpy (buf, (const uint8_t *)ident, 32);
|
|
time_t t = time (nullptr);
|
|
struct tm tm;
|
|
#ifdef _WIN32
|
|
gmtime_s(&tm, &t);
|
|
sprintf_s((char *)(buf + 32), 9, "%04i%02i%02i", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
|
|
#else
|
|
gmtime_r(&t, &tm);
|
|
sprintf((char *)(buf + 32), "%04i%02i%02i", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
|
|
#endif
|
|
IdentHash key;
|
|
SHA256(buf, 40, key);
|
|
return key;
|
|
}
|
|
|
|
XORMetric operator^(const IdentHash& key1, const IdentHash& key2)
|
|
{
|
|
XORMetric m;
|
|
#if defined(__AVX__) // for AVX
|
|
__asm__
|
|
(
|
|
"vmovups %1, %%ymm0 \n"
|
|
"vmovups %2, %%ymm1 \n"
|
|
"vxorps %%ymm0, %%ymm1, %%ymm1 \n"
|
|
"vmovups %%ymm1, %0 \n"
|
|
: "=m"(*m.metric)
|
|
: "m"(*key1), "m"(*key2)
|
|
: "memory", "%xmm0", "%xmm1" // should be replaced by %ymm0/1 once supported by compiler
|
|
);
|
|
#else
|
|
const uint64_t * hash1 = key1.GetLL (), * hash2 = key2.GetLL ();
|
|
m.metric_ll[0] = hash1[0] ^ hash2[0];
|
|
m.metric_ll[1] = hash1[1] ^ hash2[1];
|
|
m.metric_ll[2] = hash1[2] ^ hash2[2];
|
|
m.metric_ll[3] = hash1[3] ^ hash2[3];
|
|
#endif
|
|
|
|
return m;
|
|
}
|
|
}
|
|
}
|