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@ -42,15 +42,50 @@ namespace data
@@ -42,15 +42,50 @@ namespace data
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IdentityEx::IdentityEx(const uint8_t * publicKey, const uint8_t * signingKey, SigningKeyType type) |
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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_ECDSA_SHA256_P256) |
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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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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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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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size_t 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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default: |
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LogPrint ("Signing key type ", (int)type, " is not supported"); |
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} |
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memcpy (m_StandardIdentity.signingKey + 64, signingKey, 64); |
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// fill certificate
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m_StandardIdentity.certificate.type = CERTIFICATE_TYPE_KEY; |
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m_ExtendedLen = 4; // 4 bytes extra
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m_StandardIdentity.certificate.length = htobe16 (4); |
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m_StandardIdentity.certificate.length = htobe16 (m_ExtendedLen); |
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// fill extended buffer
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m_ExtendedLen = 4 + excessLen; // 4 bytes extra + excess length
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m_ExtendedBuffer = new uint8_t[m_ExtendedLen]; |
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*(uint16_t *)m_ExtendedBuffer = htobe16 (SIGNING_KEY_TYPE_ECDSA_SHA256_P256); |
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*(uint16_t *)m_ExtendedBuffer = htobe16 (type); |
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*(uint16_t *)(m_ExtendedBuffer + 2) = htobe16 (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[DEFAULT_IDENTITY_SIZE + 4]; |
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ToBuffer (buf, DEFAULT_IDENTITY_SIZE + 4); |
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CryptoPP::SHA256().CalculateDigest(m_IdentHash, buf, GetFullLen ()); |
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@ -189,6 +224,13 @@ namespace data
@@ -189,6 +224,13 @@ namespace data
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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.type == CERTIFICATE_TYPE_KEY && m_ExtendedBuffer) |
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return be16toh (*(const uint16_t *)(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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auto keyType = GetSigningKeyType (); |
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@ -198,8 +240,26 @@ namespace data
@@ -198,8 +240,26 @@ namespace data
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m_Verifier = 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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m_Verifier = new i2p::crypto::ECDSAP256Verifier (m_StandardIdentity.signingKey + 64); |
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break; |
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{ |
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size_t padding = 128 - i2p::crypto::ECDSAP256_KEY_LENGTH; // 64 = 128 - 64
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m_Verifier = 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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m_Verifier = 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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m_Verifier = new i2p::crypto::ECDSAP521Verifier (signingKey); |
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break; |
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} |
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default: |
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LogPrint ("Signing key type ", (int)keyType, " is not supported"); |
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} |
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@ -211,6 +271,7 @@ namespace data
@@ -211,6 +271,7 @@ namespace data
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memcpy (m_PrivateKey, keys.privateKey, 256); // 256
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memcpy (m_SigningPrivateKey, keys.signingPrivateKey, 20); // 20 - DSA
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delete m_Signer; |
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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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@ -221,6 +282,7 @@ namespace data
@@ -221,6 +282,7 @@ namespace data
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memcpy (m_PrivateKey, other.m_PrivateKey, 256); // 256
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memcpy (m_SigningPrivateKey, other.m_SigningPrivateKey, 128); // 128
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delete m_Signer; |
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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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@ -234,6 +296,7 @@ namespace data
@@ -234,6 +296,7 @@ namespace data
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memcpy (m_SigningPrivateKey, buf + ret, signingPrivateKeySize); |
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ret += signingPrivateKeySize; |
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delete m_Signer; |
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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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@ -257,27 +320,55 @@ namespace data
@@ -257,27 +320,55 @@ namespace data
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void PrivateKeys::CreateSigner () |
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{ |
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if (m_Public.GetSigningKeyType () == SIGNING_KEY_TYPE_ECDSA_SHA256_P256) |
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m_Signer = new i2p::crypto::ECDSAP256Signer (m_SigningPrivateKey); |
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else |
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m_Signer = new i2p::crypto::DSASigner (m_SigningPrivateKey); |
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switch (m_Public.GetSigningKeyType ()) |
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{ |
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case SIGNING_KEY_TYPE_DSA_SHA1: |
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m_Signer = new i2p::crypto::DSASigner (m_SigningPrivateKey); |
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break; |
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case SIGNING_KEY_TYPE_ECDSA_SHA256_P256: |
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m_Signer = new i2p::crypto::ECDSAP256Signer (m_SigningPrivateKey); |
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break; |
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case SIGNING_KEY_TYPE_ECDSA_SHA384_P384: |
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m_Signer = new i2p::crypto::ECDSAP384Signer (m_SigningPrivateKey); |
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break; |
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case SIGNING_KEY_TYPE_ECDSA_SHA512_P521: |
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m_Signer = new i2p::crypto::ECDSAP521Signer (m_SigningPrivateKey); |
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break; |
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default: |
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LogPrint ("Signing key type ", (int)m_Public.GetSigningKeyType (), " is not supported"); |
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} |
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} |
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PrivateKeys PrivateKeys::CreateRandomKeys (SigningKeyType type) |
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{ |
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if (type == SIGNING_KEY_TYPE_ECDSA_SHA256_P256) |
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if (type != SIGNING_KEY_TYPE_DSA_SHA1) |
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{ |
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PrivateKeys keys; |
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auto& rnd = i2p::context.GetRandomNumberGenerator (); |
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// signature
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uint8_t signingPublicKey[i2p::crypto::ECDSAP521_KEY_LENGTH]; // 132 bytes is max key size now
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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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i2p::crypto::CreateECDSAP256RandomKeys (rnd, keys.m_SigningPrivateKey, signingPublicKey); |
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break; |
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case SIGNING_KEY_TYPE_ECDSA_SHA384_P384: |
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i2p::crypto::CreateECDSAP384RandomKeys (rnd, keys.m_SigningPrivateKey, signingPublicKey); |
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break; |
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case SIGNING_KEY_TYPE_ECDSA_SHA512_P521: |
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i2p::crypto::CreateECDSAP521RandomKeys (rnd, keys.m_SigningPrivateKey, signingPublicKey); |
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break; |
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default: |
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LogPrint ("Signing key type ", (int)type, " is not supported. Create DSA-SHA1"); |
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return PrivateKeys (i2p::data::CreateRandomKeys ()); // DSA-SHA1
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} |
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keys.CreateSigner (); |
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// encryption
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uint8_t publicKey[256]; |
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CryptoPP::DH dh (i2p::crypto::elgp, i2p::crypto::elgg); |
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dh.GenerateKeyPair(rnd, keys.m_PrivateKey, publicKey); |
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// signature
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uint8_t signingPublicKey[64]; |
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i2p::crypto::CreateECDSAP256RandomKeys (rnd, keys.m_SigningPrivateKey, signingPublicKey); |
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keys.m_Public = IdentityEx (publicKey, signingPublicKey, SIGNING_KEY_TYPE_ECDSA_SHA256_P256); |
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keys.CreateSigner (); |
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// identity
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keys.m_Public = IdentityEx (publicKey, signingPublicKey, type); |
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return keys; |
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} |
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return PrivateKeys (i2p::data::CreateRandomKeys ()); // DSA-SHA1
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