mirror of
https://github.com/PurpleI2P/i2pd.git
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56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/*
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* Copyright (c) 2013-2020, The PurpleI2P Project
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*
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* This file is part of Purple i2pd project and licensed under BSD3
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*
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* See full license text in LICENSE file at top of project tree
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*/
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#ifndef BLINDING_H__
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#define BLINDING_H__
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#include <inttypes.h>
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#include <string>
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#include <vector>
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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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class BlindedPublicKey // for encrypted LS2
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{
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public:
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BlindedPublicKey (std::shared_ptr<const IdentityEx> identity, bool clientAuth = false);
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BlindedPublicKey (const std::string& b33); // from b33 without .b32.i2p
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std::string ToB33 () const;
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const uint8_t * GetPublicKey () const { return m_PublicKey.data (); };
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size_t GetPublicKeyLen () const { return m_PublicKey.size (); };
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SigningKeyType GetSigType () const { return m_SigType; };
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SigningKeyType GetBlindedSigType () const { return m_BlindedSigType; };
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bool IsValid () const { return GetSigType (); }; // signature type 0 means invalid
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void GetSubcredential (const uint8_t * blinded, size_t len, uint8_t * subcredential) const; // 32 bytes
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size_t GetBlindedKey (const char * date, uint8_t * blindedKey) const; // date is 8 chars "YYYYMMDD", return public key length
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size_t BlindPrivateKey (const uint8_t * priv, const char * date, uint8_t * blindedPriv, uint8_t * blindedPub) const; // date is 8 chars "YYYYMMDD", return public key length
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i2p::data::IdentHash GetStoreHash (const char * date = nullptr) const; // date is 8 chars "YYYYMMDD", use current if null
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private:
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void GetCredential (uint8_t * credential) const; // 32 bytes
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void GenerateAlpha (const char * date, uint8_t * seed) const; // 64 bytes, date is 8 chars "YYYYMMDD"
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void H (const std::string& p, const std::vector<std::pair<const uint8_t *, size_t> >& bufs, uint8_t * hash) const;
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private:
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std::vector<uint8_t> m_PublicKey;
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i2p::data::SigningKeyType m_SigType, m_BlindedSigType;
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bool m_IsClientAuth = false;
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};
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}
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}
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#endif
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