OpenDDS::Security::CryptoBuiltInImpl::Session Struct Reference

Public Member Functions
KeyOctetSeq	get_key (const KeyMaterial &master, const CryptoHeader &header)
void	create_key (const KeyMaterial &master)
void	derive_key (const KeyMaterial &master)
void	next_id (const KeyMaterial &master)
void	inc_iv ()

Public Attributes
SessionIdType	id_
IV_SuffixType	iv_suffix_
KeyOctetSeq	key_
ACE_UINT64	counter_

Detailed Description

Definition at line 284 of file CryptoBuiltInImpl.h.

Member Function Documentation

create_key()

void OpenDDS::Security::CryptoBuiltInImpl::Session::create_key

(

const KeyMaterial &

master

)

Definition at line 1179 of file CryptoBuiltInImpl.cpp.

Referenced by OpenDDS::Security::CryptoBuiltInImpl::encauth_setup().

{
  RAND_bytes(id_, sizeof id_);
  RAND_bytes(iv_suffix_, sizeof iv_suffix_);
  derive_key(master);
  counter_ = 0;
}

derive_key()

void OpenDDS::Security::CryptoBuiltInImpl::Session::derive_key

(

const KeyMaterial &

master

)

Definition at line 1787 of file CryptoBuiltInImpl.cpp.

References OpenDDS::Security::KeyMaterial_AES_GCM_GMAC::master_salt, and OpenDDS::Security::KeyMaterial_AES_GCM_GMAC::master_sender_key.

{
  PrivateKey pkey(master.master_sender_key);
  DigestContext ctx;
  const EVP_MD* md = EVP_get_digestbyname("SHA256");

  if (EVP_DigestInit_ex(ctx, md, 0) < 1) {
    return;
  }

  if (EVP_DigestSignInit(ctx, 0, md, 0, pkey) < 1) {
    return;
  }

  static const char cookie[] = "SessionKey"; // DDSSEC12-53: NUL excluded
  if (EVP_DigestSignUpdate(ctx, cookie, (sizeof cookie) - 1) < 1) {
    return;
  }

  const KeyOctetSeq& salt = master.master_salt;
  if (EVP_DigestSignUpdate(ctx, salt.get_buffer(), salt.length()) < 1) {
    return;
  }

  if (EVP_DigestSignUpdate(ctx, id_, sizeof id_) < 1) {
    return;
  }

  size_t req = 0;
  if (EVP_DigestSignFinal(ctx, 0, &req) < 1) {
    return;
  }

  key_.length(static_cast<unsigned int>(req));
  if (EVP_DigestSignFinal(ctx, key_.get_buffer(), &req) < 1) {
    key_.length(0);
  }
}

get_key()

KeyOctetSeq OpenDDS::Security::CryptoBuiltInImpl::Session::get_key	(	const KeyMaterial &	master,
		const CryptoHeader &	header
	)

Definition at line 1775 of file CryptoBuiltInImpl.cpp.

References OpenDDS::Security::CryptoHeader::session_id.

Referenced by OpenDDS::Security::CryptoBuiltInImpl::decrypt(), and OpenDDS::Security::CryptoBuiltInImpl::verify().

{
  if (key_.length() && 0 == std::memcmp(&id_, &header.session_id, sizeof id_)) {
    return key_;
  }
  std::memcpy(&id_, &header.session_id, sizeof id_);
  key_.length(0);
  derive_key(master);
  return key_;
}

inc_iv()

void OpenDDS::Security::CryptoBuiltInImpl::Session::inc_iv

(

)

Definition at line 1196 of file CryptoBuiltInImpl.cpp.

Referenced by OpenDDS::Security::CryptoBuiltInImpl::encauth_setup().

{
  if (inc32(iv_suffix_)) {
    inc32(iv_suffix_ + 4);
  }
}

next_id()

void OpenDDS::Security::CryptoBuiltInImpl::Session::next_id

(

const KeyMaterial &

master

)

Definition at line 1187 of file CryptoBuiltInImpl.cpp.

Referenced by OpenDDS::Security::CryptoBuiltInImpl::encauth_setup().

{
  inc32(id_);
  RAND_bytes(iv_suffix_, sizeof iv_suffix_);
  key_.length(0);
  derive_key(master);
  counter_ = 0;
}

Member Data Documentation

counter_

ACE_UINT64 OpenDDS::Security::CryptoBuiltInImpl::Session::counter_

Definition at line 288 of file CryptoBuiltInImpl.h.

Referenced by OpenDDS::Security::CryptoBuiltInImpl::encauth_setup().

id_

SessionIdType OpenDDS::Security::CryptoBuiltInImpl::Session::id_

Definition at line 285 of file CryptoBuiltInImpl.h.

Referenced by OpenDDS::Security::CryptoBuiltInImpl::authtag(), OpenDDS::Security::CryptoBuiltInImpl::encauth_setup(), and OpenDDS::Security::CryptoBuiltInImpl::encrypt().

iv_suffix_

IV_SuffixType OpenDDS::Security::CryptoBuiltInImpl::Session::iv_suffix_

Definition at line 286 of file CryptoBuiltInImpl.h.

Referenced by OpenDDS::Security::CryptoBuiltInImpl::authtag(), OpenDDS::Security::CryptoBuiltInImpl::encauth_setup(), and OpenDDS::Security::CryptoBuiltInImpl::encrypt().

key_

KeyOctetSeq OpenDDS::Security::CryptoBuiltInImpl::Session::key_

Definition at line 287 of file CryptoBuiltInImpl.h.

Referenced by OpenDDS::Security::CryptoBuiltInImpl::authtag(), OpenDDS::Security::CryptoBuiltInImpl::encauth_setup(), and OpenDDS::Security::CryptoBuiltInImpl::encrypt().

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The documentation for this struct was generated from the following files:

• CryptoBuiltInImpl.h
• CryptoBuiltInImpl.cpp