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Function silc_message_payload_parse SYNOPSIS
        SilcMessagePayload
        silc_message_payload_parse(unsigned char *payload,
                                   SilcUInt32 payload_len,
                                   bool private_message,
                                   bool static_key,
                                   SilcCipher cipher,
                                   SilcHmac hmac);
DESCRIPTION
        Parses Message Payload returning new payload structure.  This also
        decrypts the payload and checks the MAC.  If the payload is
        channel message then `private_message' is FALSE, and if it is
        private message it is TRUE.  If the private message key is static
        (pre-shared key) then protocol dictates that the IV is present
        and `static_key' must be set to TRUE.  If the key is not static
        (Key Agreement was done for the key) then it MUST be FALSE.  For
        channel messages the `static_key' is ignored.

        If the `hmac' is no provided then the MAC of the channel message is
        not verified.  If the message is private message and `cipher' is NULL
        then this assumes that the packet was decrypted with session keys
        (no private message key) and this merely decodes the payload.
SILC Message Interface SilcMessagePayload SilcMessageSignedPayload SilcMessageFlags silc_message_payload_decrypt silc_message_payload_parse silc_message_payload_encrypt silc_message_payload_encode silc_message_payload_free silc_message_get_flags silc_message_get_data silc_message_get_mac silc_message_get_iv silc_message_get_signature silc_message_signed_payload_parse silc_message_signed_payload_encode silc_message_signed_payload_free silc_message_signed_verify silc_message_signed_get_public_key

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