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fixed race condition

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orignal 2016-04-06 21:02:58 -04:00
parent afe2935c9d
commit 2ebb2d8f0e
2 changed files with 18 additions and 9 deletions
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26
Identity.cpp
View File

@ -311,18 +311,18 @@ namespace data
switch (keyType) switch (keyType)
{ {
case SIGNING_KEY_TYPE_DSA_SHA1: case SIGNING_KEY_TYPE_DSA_SHA1:
m_Verifier.reset (new i2p::crypto::DSAVerifier (m_StandardIdentity.signingKey)); UpdateVerifier (new i2p::crypto::DSAVerifier (m_StandardIdentity.signingKey));
break; break;
case SIGNING_KEY_TYPE_ECDSA_SHA256_P256: case SIGNING_KEY_TYPE_ECDSA_SHA256_P256:
{ {
size_t padding = 128 - i2p::crypto::ECDSAP256_KEY_LENGTH; // 64 = 128 - 64 size_t padding = 128 - i2p::crypto::ECDSAP256_KEY_LENGTH; // 64 = 128 - 64
m_Verifier.reset (new i2p::crypto::ECDSAP256Verifier (m_StandardIdentity.signingKey + padding)); UpdateVerifier (new i2p::crypto::ECDSAP256Verifier (m_StandardIdentity.signingKey + padding));
break; break;
} }
case SIGNING_KEY_TYPE_ECDSA_SHA384_P384: case SIGNING_KEY_TYPE_ECDSA_SHA384_P384:
{ {
size_t padding = 128 - i2p::crypto::ECDSAP384_KEY_LENGTH; // 32 = 128 - 96 size_t padding = 128 - i2p::crypto::ECDSAP384_KEY_LENGTH; // 32 = 128 - 96
m_Verifier.reset (new i2p::crypto::ECDSAP384Verifier (m_StandardIdentity.signingKey + padding)); UpdateVerifier (new i2p::crypto::ECDSAP384Verifier (m_StandardIdentity.signingKey + padding));
break; break;
} }
case SIGNING_KEY_TYPE_ECDSA_SHA512_P521: case SIGNING_KEY_TYPE_ECDSA_SHA512_P521:
@ -331,7 +331,7 @@ namespace data
memcpy (signingKey, m_StandardIdentity.signingKey, 128); memcpy (signingKey, m_StandardIdentity.signingKey, 128);
size_t excessLen = i2p::crypto::ECDSAP521_KEY_LENGTH - 128; // 4 = 132- 128 size_t excessLen = i2p::crypto::ECDSAP521_KEY_LENGTH - 128; // 4 = 132- 128
memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types
m_Verifier.reset (new i2p::crypto::ECDSAP521Verifier (signingKey)); UpdateVerifier (new i2p::crypto::ECDSAP521Verifier (signingKey));
break; break;
} }
case SIGNING_KEY_TYPE_RSA_SHA256_2048: case SIGNING_KEY_TYPE_RSA_SHA256_2048:
@ -340,7 +340,7 @@ namespace data
memcpy (signingKey, m_StandardIdentity.signingKey, 128); memcpy (signingKey, m_StandardIdentity.signingKey, 128);
size_t excessLen = i2p::crypto::RSASHA2562048_KEY_LENGTH - 128; // 128 = 256- 128 size_t excessLen = i2p::crypto::RSASHA2562048_KEY_LENGTH - 128; // 128 = 256- 128
memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types
m_Verifier.reset (new i2p::crypto:: RSASHA2562048Verifier (signingKey)); UpdateVerifier (new i2p::crypto:: RSASHA2562048Verifier (signingKey));
break; break;
} }
case SIGNING_KEY_TYPE_RSA_SHA384_3072: case SIGNING_KEY_TYPE_RSA_SHA384_3072:
@ -349,7 +349,7 @@ namespace data
memcpy (signingKey, m_StandardIdentity.signingKey, 128); memcpy (signingKey, m_StandardIdentity.signingKey, 128);
size_t excessLen = i2p::crypto::RSASHA3843072_KEY_LENGTH - 128; // 256 = 384- 128 size_t excessLen = i2p::crypto::RSASHA3843072_KEY_LENGTH - 128; // 256 = 384- 128
memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types
m_Verifier.reset (new i2p::crypto:: RSASHA3843072Verifier (signingKey)); UpdateVerifier (new i2p::crypto:: RSASHA3843072Verifier (signingKey));
break; break;
} }
case SIGNING_KEY_TYPE_RSA_SHA512_4096: case SIGNING_KEY_TYPE_RSA_SHA512_4096:
@ -358,20 +358,28 @@ namespace data
memcpy (signingKey, m_StandardIdentity.signingKey, 128); memcpy (signingKey, m_StandardIdentity.signingKey, 128);
size_t excessLen = i2p::crypto::RSASHA5124096_KEY_LENGTH - 128; // 384 = 512- 128 size_t excessLen = i2p::crypto::RSASHA5124096_KEY_LENGTH - 128; // 384 = 512- 128
memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types memcpy (signingKey + 128, m_ExtendedBuffer + 4, excessLen); // right after signing and crypto key types
m_Verifier.reset (new i2p::crypto:: RSASHA5124096Verifier (signingKey)); UpdateVerifier (new i2p::crypto:: RSASHA5124096Verifier (signingKey));
break; break;
} }
case SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519: case SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519:
{ {
size_t padding = 128 - i2p::crypto::EDDSA25519_PUBLIC_KEY_LENGTH; // 96 = 128 - 32 size_t padding = 128 - i2p::crypto::EDDSA25519_PUBLIC_KEY_LENGTH; // 96 = 128 - 32
m_Verifier.reset (new i2p::crypto::EDDSA25519Verifier (m_StandardIdentity.signingKey + padding)); UpdateVerifier (new i2p::crypto::EDDSA25519Verifier (m_StandardIdentity.signingKey + padding));
break; break;
} }
default: default:
LogPrint (eLogError, "Identity: Signing key type ", (int)keyType, " is not supported"); LogPrint (eLogError, "Identity: Signing key type ", (int)keyType, " is not supported");
} }
} }
void IdentityEx::UpdateVerifier (i2p::crypto::Verifier * verifier) const
{
if (!m_Verifier || !verifier)
m_Verifier.reset (verifier);
else
delete verifier;
}
void IdentityEx::DropVerifier () const void IdentityEx::DropVerifier () const
{ {
// TODO: potential race condition with Verify // TODO: potential race condition with Verify

1
Identity.h
View File

@ -95,6 +95,7 @@ namespace data
private: private:
void CreateVerifier () const; void CreateVerifier () const;
void UpdateVerifier (i2p::crypto::Verifier * verifier) const;
private: private: