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Ed25519ph

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orignal 2025-03-05 10:38:23 -05:00
parent 4f82fe24da
commit c816d3e4cc
2 changed files with 84 additions and 3 deletions
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53
libi2pd/Signature.cpp
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2023, The PurpleI2P Project
* Copyright (c) 2013-2025, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -149,5 +149,56 @@ namespace crypto
LogPrint (eLogError, "EdDSA signing key is not set");
}
#endif
#if (OPENSSL_VERSION_NUMBER >= 0x030000000)
static const OSSL_PARAM EDDSA25519phParams[] =
{
OSSL_PARAM_utf8_string ("instance", (char *)"Ed25519ph", 9),
OSSL_PARAM_END
};
bool EDDSA25519phVerifier::Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const
{
auto pkey = GetPkey ();
if (pkey)
{
uint8_t digest[64];
SHA512 (buf, len, digest);
EVP_MD_CTX * ctx = EVP_MD_CTX_create ();
EVP_DigestVerifyInit_ex (ctx, NULL, NULL, NULL, NULL, pkey, EDDSA25519phParams);
auto ret = EVP_DigestVerify (ctx, signature, 64, digest, 64);
EVP_MD_CTX_destroy (ctx);
return ret;
}
else
LogPrint (eLogError, "EdDSA verification key is not set");
return false;
}
EDDSA25519phSigner::EDDSA25519phSigner (const uint8_t * signingPrivateKey):
EDDSA25519Signer (signingPrivateKey)
{
}
void EDDSA25519phSigner::Sign (const uint8_t * buf, int len, uint8_t * signature) const
{
auto pkey = GetPkey ();
if (pkey)
{
uint8_t digest[64];
SHA512 (buf, len, digest);
EVP_MD_CTX * ctx = EVP_MD_CTX_create ();
size_t l = 64;
uint8_t sig[64];
EVP_DigestSignInit_ex (ctx, NULL, NULL, NULL, NULL, pkey, EDDSA25519phParams);
if (!EVP_DigestSign (ctx, sig, &l, digest, 64))
LogPrint (eLogError, "EdDSA signing failed");
memcpy (signature, sig, 64);
EVP_MD_CTX_destroy (ctx);
}
else
LogPrint (eLogError, "EdDSA signing key is not set");
}
#endif
}
}

34
libi2pd/Signature.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2023, The PurpleI2P Project
* Copyright (c) 2013-2025, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -303,14 +303,28 @@ namespace crypto
private:
#if OPENSSL_EDDSA
#if OPENSSL_EDDSA
EVP_PKEY * m_Pkey;
protected:
EVP_PKEY * GetPkey () const { return m_Pkey; };
#else
EDDSAPoint m_PublicKey;
uint8_t m_PublicKeyEncoded[EDDSA25519_PUBLIC_KEY_LENGTH];
#endif
};
#if (OPENSSL_VERSION_NUMBER >= 0x030000000) // since 3.0.0
class EDDSA25519phVerifier: public EDDSA25519Verifier
{
public:
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const;
};
#endif
class EDDSA25519SignerCompat: public Signer
{
public:
@ -339,6 +353,10 @@ namespace crypto
void Sign (const uint8_t * buf, int len, uint8_t * signature) const;
protected:
EVP_PKEY * GetPkey () const { return m_Pkey; };
private:
EVP_PKEY * m_Pkey;
@ -350,6 +368,18 @@ namespace crypto
#endif
#if (OPENSSL_VERSION_NUMBER >= 0x030000000) // since 3.0.0
class EDDSA25519phSigner: public EDDSA25519Signer
{
public:
EDDSA25519phSigner (const uint8_t * signingPrivateKey);
void Sign (const uint8_t * buf, int len, uint8_t * signature) const;
};
#endif
inline void CreateEDDSA25519RandomKeys (uint8_t * signingPrivateKey, uint8_t * signingPublicKey)
{
#if OPENSSL_EDDSA