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<p class="class_37 b1+">
<li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
ecdsa_nistp256_with_sha256
<font style="font-family: Times New Roman;">
: the signature contained in an
<a href="type">
<font style="font-family: Courier New;">EcdsaSignature</font>
</a>
structure shall be given.
</font>
</font>
</li>
</p>
<p class="class_37 b1+">
<li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
unknown
<font style="font-family: Times New Roman;">
: in all other cases, a variable-length vector containing the signature as
<font style="font-family: Courier New;">
opaque
<font style="font-family: Times New Roman;">data shall be given.</font>
</font>
</font>
</font>
</li>
</p>
</ul>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
The data in this structure can be used to verify a data structure's integrity. In conjunction with a matching
<a href="type">
<font style="font-family: Courier New;">SignerInfo</font>
</a>
structure, the data structure's authenticity can also be verified.
</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">It is necessary to note the following points:</font>
</p>
<ul style="list-style-type: disc; margin: 0in 0in 0in 0.511806in; padding: 0pt; text-indent: -0.314583in; text-align: left;">
<p class="class_35 b1+">
<li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
Clause
<a href="cla">5.6</a>
defines which parts of a
<a href="type">
<font style="font-family: Courier New;">SecuredMessage</font>
</a>
data structure are covered by a signature.
</font>
</li>
</p>
<p class="class_35 b1+">
<li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
The length of the
<font style="font-family: Courier New;">
security_field<var>
<font style="font-family: Times New Roman;">
variable length vector in the
<a href="type">
<font style="font-family: Courier New;">SecuredMessage</font>
</a>
containing the
<font style="font-family: Courier New;">
Signature
<font style="font-family: Times New Roman;">field shall be calculated before creating the signature using the length of the signature.</font>
</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_35 b1+">
<li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
Before calculating the actual signature, the length field of the surrounding variable length vector
<a href="type">
<font style="font-family: Courier New;">TrailerField</font>
</a>
<font style="font-family: Courier New;">
<font style="font-family: Times New Roman;">
shall be calculated using the value of
<font style="font-family: Courier New;">
field_size
<font style="font-family: Times New Roman;">, since this length field is part of the signed content.</font>
</font>
</font>
</font>
</font>
</li>
</p>
</ul>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Except naming and full inclusion (not marked as
<font style="font-family: Courier New;">
extern
<font style="font-family: Times New Roman;">
) of the enumeration
<font style="font-family: Courier New;">
PublicKeyAlgorithm
<font style="font-family: Times New Roman;">
, this definition is identical to the one in IEEE.1609.2 Draft D12 [
<a href="REF">i.2</a>
], clause 6.2.15.
</font>
</font>
</font>
</font>
</font>
</p>
<h3 class="class_33">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786163">
4.2.9
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a id="type_ecdsasignature">EcdsaSignature</a>
</a>
</font>
</h3>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">struct {</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
extern PublicKeyAlgorithm
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
algorithm;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
extern uint8
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
field_size;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
EccPoint
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
R;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
opaque
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
s[field_size];
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} EcdsaSignature;</font>
</p>
<p class="class_31"/>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
This structure defines the details needed to describe an ECDSA based signature. This field's length
<font style="font-family: Courier New;">
field_size
<font style="font-family: Times New Roman;">
is derived from the applied ECDSA algorithm using the mapping as specified in table
<a href="">2</a>
. The extern link that specifies the algorithm points to the algorithm defined in the surrounding
<a href="type">
<font style="font-family: Courier New;">Signature</font>
</a>
structure.
<font style="font-family: Courier New;">
R
<font style="font-family: Times New Roman;">
contains the x coordinate of the elliptic curve point resulting from multiplying the generator element by the ephemeral private key.
<span class="requality_text id_cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1"><a class="requality_id" id="id_cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1" name="cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1"/>
The EccPointType of
</span>
<font style="font-family: Courier New;">
<span class="requality_text id_cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1">R</span>
<font style="font-family: Times New Roman;">
<span class="requality_text id_cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1">shall be set to either</span>
<font style="font-family: Courier New;">
<span class="requality_text id_cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1">compressed_lsb_y_0</span>
<font style="font-family: Times New Roman;">
<span class="requality_text id_cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1">,</span>
<font style="font-family: Courier New;">
<span class="requality_text id_cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1">compressed_lsb_y_1</span>
<font style="font-family: Times New Roman;">
<span class="requality_text id_cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1">or</span>
<font style="font-family: Courier New;">
<span class="requality_text id_cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1">x_coordinate_only</span>
<font style="font-family: Times New Roman;">
<span class="requality_text id_cd4f4ae8-6cdd-439b-a1bb-3c8c47d8bfc1">.</span>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE 1:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Except naming of included type
<font style="font-family: Courier New;">
PublicKeyAlgorithm
<font style="font-family: Times New Roman;">
, this definition is identical to the one in IEEE 1609.2 Draft D12 [
<a href="REF">i.2</a>
], clause 6.2.17.
</font>
</font>
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE 2:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
It is possible to add extra information by transferring the complete point R in a compressed form instead of only the x coordinate. This extra information may then be used for a faster signature verification algorithm as outlined in "Accelerated verification of ECDSA signatures" [
<a href="REF">i.6</a>
].
</font>
</p>
<h3 class="class_33">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786164">
4.2.10
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a id="type_signerinfo">SignerInfo</a>
</a>
</font>
</h3>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">struct {</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
SignerInfoType type;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
select(type){
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
case self:
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
case certificate_digest_with_sha256:
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
HashedId8
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
digest;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
case certificate:
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Certificate
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
certificate;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
case certificate_chain:
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Certificate
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
certificates<var>;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
case certificate_digest_with_other_algorithm:
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
PublicKeyAlgorithm
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
algorithm;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
HashedId8
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
digest;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
unknown:
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
opaque
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
info<var>;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
}
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} SignerInfo;</font>
</p>
<p class="class_31"/>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
This structure defines how to give information about the signer of a message. The included cryptographic identity can be used in conjunction with the structure
<a href="type">
<font style="font-family: Courier New;">Signature</font>
</a>
to verify a message's authenticity. Depending on the value of
<font style="font-family: Courier New;">
type
<font style="font-family: Times New Roman;">
, the
<a href="type">
<font style="font-family: Courier New;">SignerInfo</font>
</a>
's data fields shall contain the following entries:
</font>
</font>
</font>
</p>
<ul style="list-style-type: disc; margin: 0in 0in 0in 0.511806in; padding: 0pt; text-indent: -0.314583in; text-align: left;">
<p class="class_37 b1+">
<li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
self
<font style="font-family: Times New Roman;">: the data is self-signed. Therefore, no additional data shall be given.</font>
</font>
</li>
</p>
<p class="class_37 b1+">
<li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
certificate_digest_with_sha256
<font style="font-family: Times New Roman;">
: an 8 octet digest of the relevant certificate contained in a
<a href="type">
<font style="font-family: Courier New;">HashedId8</font>
</a>
structure shall be given.
</font>
</font>
</li>
</p>
<p class="class_37 b1+">
<li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
certificate
<font style="font-family: Times New Roman;">
: the relevant certificate itself contained in a
<a href="type">
<font style="font-family: Courier New;">Certificate</font>
</a>
structure shall be given.
</font>
</font>
</li>
</p>
<p class="class_37 b1+">
<li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
certificate_chain
<font style="font-family: Times New Roman;">
: a complete certificate chain contained in a variable-length vector of type
<a href="type">
<font style="font-family: Courier New;">Certificate</font>
</a>
shall be given.
<span class="requality_text id_083c999c-3428-451c-ae75-be7d885f5975"><a class="requality_id" id="id_083c999c-3428-451c-ae75-be7d885f5975" name="083c999c-3428-451c-ae75-be7d885f5975"/>
The last element of the chain shall contain the certificate used to sign the message, the next to last element shall contain the certificate of the CA that signed the last certificate and so on.
</span>
The first element of the chain needs not be a root certificate.
</font>
</font>
</li>
</p>
<p class="class_37 b1+">
<li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
certificate_digest_with_other_algorithm
<font style="font-family: Times New Roman;">
: an 8 octet digest contained in a
<a href="type">
<font style="font-family: Courier New;">HashedId8</font>
</a>
structure and the corresponding public key algorithm contained in a
<font style="font-family: Courier New;">
PublicKeyAlgorithm
<font style="font-family: Times New Roman;">structure shall be given.</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_37 b1+">
<li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
unknown
<font style="font-family: Times New Roman;">
: in all other cases, a variable-length vector containing information as
<font style="font-family: Courier New;">
opaque
<font style="font-family: Times New Roman;">data shall be given.</font>
</font>
</font>
</font>
</li>
</p>
</ul>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Except naming, this definition is identical to the one in IEEE 1609.2 Draft D12 [
<a href="REF">i.2</a>
], clause 6.2.4.
</font>
</p>
<h3 class="class_33">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786165">
4.2.11
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a id="type_signerinfotype">SignerInfoType</a>
</a>
</font>
</h3>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">enum {</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
self(0),
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
certificate_digest_with_sha256(1),
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
certificate(2),
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
certificate_chain(3),
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
certificate_digest_with_other_algorithm(4),
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
reserved(240..255),
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
(2^8-1)
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} SignerInfoType;</font>
</p>
<p class="class_31"/>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This enumeration lists methods to describe a message's signer. Values in the range of 240 to 255 shall not be used as they are reserved for internal testing purposes.</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
This definition is similar to the one in IEEE 1609.2 Draft D12 [
<a href="REF">i.2</a>
], clause 6.2.5, but naming and
<font style="font-family: Courier New;">
certificate_digest_with_ecdsap224
<font style="font-family: Times New Roman;">
is not supported by the present document. As a consequence, the numbering of identical elements (e.g.
<font style="font-family: Courier New;">
certificate_chain
<font style="font-family: Times New Roman;">) differs.</font>
</font>
</font>
</font>
</font>
</p>
<h3 class="class_33">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786166">
4.2.12
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a id="type_hashedid8">HashedId8</a>
</a>
</font>
</h3>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
opaque
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
HashedId8[8];
</font>
</p>
<p class="class_31"/>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This value is used to identify data such as a certificate. It shall be calculated by first computing the SHA-256 hash of the input data, and then taking the least significant eight bytes from the hash output.</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
A canonical encoding for the
<font style="font-family: Courier New;">
EccPoint R
<font style="font-family: Times New Roman;">
contained in the
<font style="font-family: Courier New;">
signature field
<font style="font-family: Times New Roman;">
of a
<font style="font-family: Courier New;">
Certificate
<font style="font-family: Times New Roman;">
shall be used when calculating the SHA-256 hash from a
<font style="font-family: Courier New;">
Certificate
<font style="font-family: Times New Roman;">
. This canonical encoding shall temporarily replace the value of the
<font style="font-family: Courier New;">
EccPointType
<font style="font-family: Times New Roman;">
of the point
<font style="font-family: Courier New;">
R
<font style="font-family: Times New Roman;">
of the
<font style="font-family: Courier New;">
Certificate
<font style="font-family: Times New Roman;">
with
<font style="font-family: Courier New;">
x_coordinate_only
<font style="font-family: Times New Roman;">for the hash computation.</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE 1:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Except naming, this definition is identical to the one in IEEE 1609.2 Draft D12 [
<a href="REF">i.2</a>
], clause 6.2.6.
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE 2:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
The canonical encoding is used to remove the possibility of manipulating the certificate in a way that results in different
<font style="font-family: Courier New;">
HashedId8
<font style="font-family: Times New Roman;">
identifiers for the same certificate by changing the
<font style="font-family: Courier New;">
EccPointType
<font style="font-family: Times New Roman;">
. Implementations that do not use the fast verification according to "Accelerated verification of ECDSA signatures" [
<a href="REF">i.6</a>
] cannot detect this manipulation.
</font>
</font>
</font>
</font>
</font>
</p>
<h3 class="class_33">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786167">
4.2.13
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a id="type_hashedid2">HashedId3</a>
</a>
</font>
</h3>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
opaque
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
HashedId3[3];
</font>
</p>
<p class="class_31"/>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
This value is used to give an indication on an identifier, where real identification is not required. This can be used to request a certificate from other surrounding stations. It shall be calculated by first computing the SHA-256 hash of the input data, and then taking the least significant three bytes from the hash output. If a corresponding
<a href="type">
<font style="font-family: Courier New;">HashedId8</font>
</a>
value is available, it can be calculated by truncating the longer
<font style="font-family: Courier New;">
HashedId8
<font style="font-family: Times New Roman;">to the least significant three bytes.</font>
</font>
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
This definition is not available in IEEE 1609.2 Draft D12 [
<a href="REF">i.2</a>
].
</font>
</p>
<h3 class="class_33">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786168">
4.2.14
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a id="type_time32">Time32</a>
</a>
</font>
</h3>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
uint32
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Time32;
</font>
</p>
<p class="class_31"/>
<p class="class_38">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
Time32
<font style="font-family: Times New Roman;">is an unsigned 32-bit integer, encoded in big-endian format, giving the number of International Atomic Time (TAI) seconds since 00:00:00 UTC, 01 January 2004.</font>
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE 1:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
The period of 2
</font>
<font style="font-size: 6pt; vertical-align: super;">32</font>
<font style="font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">seconds lasts about 136 years that is until 2140.</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE 2:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
This definition is identical to the one in IEEE 1609.2 Draft D17 [
<a href="REF">i.3</a>
], clause 6.3.31.
</font>
</p>
<h3 class="class_33">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786169">
4.2.15
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a id="type_time64">Time64</a>
</a>
</font>
</h3>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
uint64
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Time64;
</font>
</p>
<p class="class_31"/>
<p class="class_38">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
Time64
<font style="font-family: Times New Roman;">is a 64-bit unsigned integer, encoded in big-endian format, giving the number of International Atomic Time (TAI) microseconds since 00:00:00 UTC, 01 January 2004.</font>
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
This definition is identical to the one in IEEE 1609.2 Draft D17 [
<a href="REF">i.3</a>
], clause 6.2.12.
</font>
</p>
<h3 class="class_33">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786170">
4.2.16
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a id="type_time64_with_std_dev">Time64WithStandardDeviation</a>
</a>
</font>
</h3>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">struct {</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Time64
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
time;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
uint8
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
log_std_dev;
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
} Time64WithStandardDeviation;
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
</font>
</p>
<p class="class_31"/>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
This structure defines how to encode
<font style="font-family: Courier New;">
time
<font style="font-family: Times New Roman;">
along with the standard deviation of time values.
<font style="font-family: Courier New;">
log_std_dev
<font style="font-family: Times New Roman;">values 0 to 254 represent the rounded up value of the log to the base 1,134666 of the implementation's estimate of the standard deviation in units of nanoseconds. Values greater than 1,134666</font>
</font>
</font>
</font>
</font>
<font style="font-size: 6pt; vertical-align: super;">254</font>
<font style="font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">nanoseconds are represented by the value 254, i.e. a day or longer. If the standard deviation is unknown, value 255 shall be used.</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE 1:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
This definition is identical to the one in IEEE 1609.2 Draft D17 [
<a href="REF">i.3</a>
], clause 6.2.11.
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE 2:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
This definition is currently unused in the security profiles in clause 7.
</font>
</p>
<h3 class="class_33">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786171">
4.2.17
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a id="type_duration">Duration</a>
</a>
</font>
</h3>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
uint16
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Duration;
</font>
</p>
<p class="class_31"/>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
This
<font style="font-family: Courier New;">
uint16
<font style="font-family: Times New Roman;">
encodes the duration of a time span (e.g. a certificate's validity). The first three bits shall encode the units as given in table
<a href="">3</a>
. The remaining 13 bits shall be treated as an integer encoded.
</font>
</font>
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE 1:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Except naming, this definition is identical to the one in IEEE 1609.2 Draft D12 [
<a href="REF">i.2</a>
], clause 6.3.5.
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE 2:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
This definition is currently unused in the security profiles in clause 7.
</font>
</p>
<p class="class_29">
<table style="border-collapse: collapse; border-spacing: 0pt;">
<tbody>
<tr style="height: 0in;">
<td colspan="2" style="border-bottom: 1px solid black; width: 3.82986in;">
<p class="class_29">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">
Table
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">: Interpretation of duration unit bits</font>
</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.36875in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Bits</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.46111in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Interpretation</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.36875in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">000</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.46111in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">seconds</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.36875in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">001</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.46111in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">minutes (60 seconds)</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.36875in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">010</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.46111in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">hours (3 600 seconds)</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.36875in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">011</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.46111in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">60 hour blocks (216 000 seconds)</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.36875in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">100</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.46111in;">