Documentation update

## Imports:

 * **[Ieee1609Dot2BaseTypes](Ieee1609Dot2BaseTypes.md)** *{iso(1) identified-organization(3) ieee(111) standards-association-numbered-series-standards(2) wave-stds(1609) dot2(2) base(1) base-types(2) major-version-2(2) minor-version-4(4)}*<br/>

 * **[Ieee1609Dot2BaseTypes](Ieee1609Dot2BaseTypes.md)** *{iso(1) identified-organization(3) ieee(111) standards-association-numbered-series-standards(2) wave-stds(1609) dot2(2) base(1) base-types(2) major-version-2(2) minor-version-4(4)} WITH SUCCESSORS*<br/>

 * **[EtsiTs103097ExtensionModule](EtsiTs103097ExtensionModule.md)** *{itu-t(0) identified-organization(4) etsi(0) itsDomain(5) wg5(5) secHeaders(103097) extension(2) major-version-1(1) minor-version-1(1)}*<br/>

 structure contains at least one of the optional elements, and may contain 

 more than one. See 5.2.4.3.4 for more details.

 The security profile in Annex C allows an implementation of this standard 

 to state which forms of Signed�Data�Payload are supported by that 

 to state which forms of SignedDataPayload are supported by that 

 implementation, and also how the signer and verifier are intended to obtain

 the external data for hashing. The specification of an SDEE that uses 

 external data is expected to be explicit and unambiguous about how this 

### <a name="EncryptedData"></a>EncryptedData

This data structure encodes data that has been encrypted to one or 

 more recipients using the recipients� public or symmetric keys as 

 more recipients using the recipients public or symmetric keys as 

 specified in 5.3.4.

Fields:

     - If the containing RecipientInfo structure indicates 

   signedDataRecipInfo, this field contains the HashedId8 of the 

   Ieee1609Dot2Data of type signedData that contained the encryption key, 

   with that Ieee��1609�Dot2��Data canonicalized per 6.3.4. The HashedId8 is 

   with that Ieee1609Dot2Data canonicalized per 6.3.4. The HashedId8 is 

   calculated with the hash algorithm determined as specified in 5.3.9.5.

     - If the containing RecipientInfo structure indicates rekRecipInfo, this 

   field contains the HashedId8 of the COER encoding of a PublicEncryptionKey 

NOTE: In the name of this structure, "One28" indicates that the 

 symmetric cipher block size is 128 bits. It happens to also be the case 

 that the keys used for both AES-128-CCM and SM4-CCM are also 128 bits long. 

 This is, however, not what �One28� refers to. Since the cipher is used in 

 This is, however, not what One28 refers to. Since the cipher is used in 

 counter mode, i.e., as a stream cipher, the fact that that block size is 128

 bits affects only the size of the MAC and does not affect the size of the

 raw ciphertext.

 AppExtension type is associated with consistency conditions, specific to 

 that extension, that govern its consistency with SPDUs signed by the 

 certificate holder and with the CertIssueExtensions in the CA certificates 

 in that certificate holder�s chain. Those consistency conditions are 

 in that certificate holders chain. Those consistency conditions are 

 specified for each individual AppExtension below.

```asn1

SequenceOfAppExtensions ::= SEQUENCE (SIZE(1..MAX)) OF AppExtension

 specific to that extension, that govern its consistency with 

 AppExtensions in certificates issued by the certificate holder and with 

 the CertIssueExtensions in the CA certificates in that certificate 

 holder�s chain. Those consistency conditions are specified for each 

 holders chain. Those consistency conditions are specified for each 

 individual CertIssueExtension below.

```asn1

SequenceOfCertIssueExtensions ::= 

 specific to that extension, that govern its consistency with 

 AppExtensions in certificates issued by the certificate holder and with 

 the CertRequestExtensions in the CA certificates in that certificate 

 holder�s chain. Those consistency conditions are specified for each 

 holders chain. Those consistency conditions are specified for each 

 individual CertRequestExtension below.

```asn1

SequenceOfCertRequestExtensions ::= SEQUENCE (SIZE(1..MAX)) OF CertRequestExtension