2.2.1.2 Compressed Secured Payload
This payload MUST be WBXML as specified in [WBXML1.2]. In addition, the following constraints MUST be met:
The WBXML version number, as specified in [WBXML1.2] section 5.4, MUST be 1.2.
The Document Public Identifier, as specified in [WBXML1.2] section 5.5, MUST be encoded either as the well-known document type public identifier "Unknown or missing public identifier" (value 1) as specified in [WBXML1.2] section 7.2, or as a string "(null),0" in the string table. Either value can be used.
The Charset, as specified in [WBXML1.2] section 5.6, MUST be 3 (representing US-ASCII).
The following tokens MUST NOT be used in the encoding of any attribute value (referred to as attrValue in [WBXML1.2] section 5.3):
EXT_I_1 (0x41)
EXT_I_2 (0x42)
EXT_T_0 (0x80)
EXT_T_1 (0x81)
EXT_T_2 (0x82)
EXT_0 (0xC0)
EXT_1 (0xC1)
EXT_2 (0xC2)
The following tokens MUST NOT be used in the encoding of any content (referred to as content in [WBXML1.2] section 5.3):
EXT_I_1 (0x41)
EXT_I_2 (0x42)
EXT_T_0 (0x80)
EXT_T_1 (0x81)
EXT_T_2 (0x82)
EXT_0 (0xC0)
EXT_1 (0xC1)
EXT_2 (0xC2)
OPAQUE (0xC3)
This MUST encode the secured XML element specified in 2.2.1.3.