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use EdDSA from openssl 1.1.1

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orignal 2018-09-03 17:39:49 -04:00
parent dc30a4c1ae
commit 2c3b19a539
3 changed files with 82 additions and 1 deletions
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28
libi2pd/Signature.h
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@ -367,6 +367,8 @@ namespace crypto
public:
EDDSA25519Verifier (const uint8_t * signingKey);
~EDDSA25519Verifier ();
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const;
size_t GetPublicKeyLen () const { return EDDSA25519_PUBLIC_KEY_LENGTH; };
@ -374,8 +376,13 @@ namespace crypto
private:
#if OPENSSL_EDDSA
EVP_PKEY * m_Pkey;
EVP_MD_CTX * m_MDCtx;
#else
EDDSAPoint m_PublicKey;
uint8_t m_PublicKeyEncoded[EDDSA25519_PUBLIC_KEY_LENGTH];
#endif
};
class EDDSA25519Signer: public Signer
@ -384,20 +391,39 @@ namespace crypto
EDDSA25519Signer (const uint8_t * signingPrivateKey, const uint8_t * signingPublicKey = nullptr);
// we pass signingPublicKey to check if it matches private key
~EDDSA25519Signer ();
void Sign (const uint8_t * buf, int len, uint8_t * signature) const;
const uint8_t * GetPublicKey () const { return m_PublicKeyEncoded; };
private:
#if OPENSSL_EDDSA
EVP_PKEY * m_Pkey;
EVP_MD_CTX * m_MDCtx;
#else
uint8_t m_ExpandedPrivateKey[64];
uint8_t m_PublicKeyEncoded[EDDSA25519_PUBLIC_KEY_LENGTH];
#endif
};
inline void CreateEDDSA25519RandomKeys (uint8_t * signingPrivateKey, uint8_t * signingPublicKey)
{
#if OPENSSL_EDDSA
EVP_PKEY *pkey = NULL;
EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id (EVP_PKEY_ED25519, NULL);
EVP_PKEY_keygen_init (pctx);
EVP_PKEY_keygen (pctx, &pkey);
EVP_PKEY_CTX_free (pctx);
size_t len = EDDSA25519_PUBLIC_KEY_LENGTH;
EVP_PKEY_get_raw_public_key (pkey, signingPublicKey, &len);
len = EDDSA25519_PRIVATE_KEY_LENGTH;
EVP_PKEY_get_raw_private_key (pkey, signingPrivateKey, &len);
EVP_PKEY_free (pkey);
#else
RAND_bytes (signingPrivateKey, EDDSA25519_PRIVATE_KEY_LENGTH);
EDDSA25519Signer signer (signingPrivateKey);
memcpy (signingPublicKey, signer.GetPublicKey (), EDDSA25519_PUBLIC_KEY_LENGTH);
#endif
}