diff options
| author | Christian Pointner <equinox@anytun.org> | 2009-03-17 15:53:22 +0000 |
|---|---|---|
| committer | Christian Pointner <equinox@anytun.org> | 2009-03-17 15:53:22 +0000 |
| commit | 7d04626ef28ca5d27bc8515660c58bb135aa8c93 (patch) | |
| tree | d8affb3523764a4be6aba9b6bd227e875ebb2096 /src/encryptedPacket.cpp | |
| parent | removed key derivation rate entirely (diff) | |
added support for configurabel auth tag length
Diffstat (limited to 'src/encryptedPacket.cpp')
| -rw-r--r-- | src/encryptedPacket.cpp | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/src/encryptedPacket.cpp b/src/encryptedPacket.cpp index c18551c..a5aec86 100644 --- a/src/encryptedPacket.cpp +++ b/src/encryptedPacket.cpp @@ -39,8 +39,8 @@ #include "log.h" #include "anytunError.h" -EncryptedPacket::EncryptedPacket(u_int32_t payload_length, bool allow_realloc) - : Buffer(payload_length + sizeof(struct HeaderStruct), allow_realloc) +EncryptedPacket::EncryptedPacket(u_int32_t payload_length, u_int32_t auth_tag_length, bool allow_realloc) + : Buffer(payload_length + sizeof(struct HeaderStruct), allow_realloc), auth_tag_length_(auth_tag_length) { header_ = reinterpret_cast<struct HeaderStruct*>(buf_); payload_ = buf_ + sizeof(struct HeaderStruct); @@ -118,7 +118,7 @@ u_int32_t EncryptedPacket::getPayloadLength() const if(!auth_tag_) return (length_ > sizeof(struct HeaderStruct)) ? (length_ - sizeof(struct HeaderStruct)) : 0; - return (length_ > (sizeof(struct HeaderStruct) + AUTHTAG_SIZE)) ? (length_ - sizeof(struct HeaderStruct) - AUTHTAG_SIZE) : 0; + return (length_ > (sizeof(struct HeaderStruct) + auth_tag_length_)) ? (length_ - sizeof(struct HeaderStruct) - auth_tag_length_) : 0; } void EncryptedPacket::setPayloadLength(u_int32_t payload_length) @@ -143,11 +143,11 @@ void EncryptedPacket::reinit() if(auth_tag_) { - if(length_ < (sizeof(struct HeaderStruct) + AUTHTAG_SIZE)) { + if(length_ < (sizeof(struct HeaderStruct) + auth_tag_length_)) { auth_tag_ = NULL; AnytunError::throwErr() << "auth-tag can't be enabled, buffer is too small"; } - auth_tag_ = buf_ + length_ - AUTHTAG_SIZE; + auth_tag_ = buf_ + length_ - auth_tag_length_; } } @@ -169,7 +169,7 @@ u_int32_t EncryptedPacket::getAuthenticatedPortionLength() if(!auth_tag_) return length_; - return (length_ > AUTHTAG_SIZE) ? (length_ - AUTHTAG_SIZE) : 0; + return (length_ > auth_tag_length_) ? (length_ - auth_tag_length_) : 0; } void EncryptedPacket::withAuthTag(bool b) @@ -179,10 +179,10 @@ void EncryptedPacket::withAuthTag(bool b) if(b) { - if(length_ < (sizeof(struct HeaderStruct) + AUTHTAG_SIZE)) + if(length_ < (sizeof(struct HeaderStruct) + auth_tag_length_)) AnytunError::throwErr() << "auth-tag can't be enabled, buffer is too small"; - auth_tag_ = buf_ + length_ - AUTHTAG_SIZE; + auth_tag_ = buf_ + length_ - auth_tag_length_; } else auth_tag_ = NULL; @@ -194,7 +194,7 @@ void EncryptedPacket::addAuthTag() return; auth_tag_ = buf_; // will be set to the correct value @ reinit - setLength(length_ + AUTHTAG_SIZE); + setLength(length_ + auth_tag_length_); if(auth_tag_ == buf_) // reinit was not called by setLength reinit(); } @@ -205,7 +205,7 @@ void EncryptedPacket::removeAuthTag() return; auth_tag_ = NULL; - setLength(length_ - AUTHTAG_SIZE); + setLength(length_ - auth_tag_length_); } u_int8_t* EncryptedPacket::getAuthTag() @@ -216,7 +216,7 @@ u_int8_t* EncryptedPacket::getAuthTag() u_int32_t EncryptedPacket::getAuthTagLength() { if(auth_tag_) - return AUTHTAG_SIZE; + return auth_tag_length_; return 0; } |