Copyright © 2001 - 2007 SILC Project SILC Project Website | SILC Toolkit Reference Manual Index

SILC Toolkit Reference Manual SILC VCard Library SILC VCard Interface SILC Crypto Library Introduction to SILC RNG SILC RNG Interface SILC Cipher API SILC PKCS API SILC Public Key API SILC PKCS #1 API SILC Hash Interface SILC HMAC Interface SILC Client Library Using SILC Client Library Tutorial Arguments for command_reply Client Operation SilcStatus Error Arguments in command_reply Client Operation Arguments for notify Client Operation Unicode and UTF-8 Strings in Client Library Client Library Interface Reference Client Entry Interface Reference SILC Math Library SILC MP Interface SILC Math Interface SILC Application Utility Library SILC Application Utilities SILC ID Cache Interface SILC Key Repository Library SILC SKR Interface SILC ASN.1 Library SILC ASN.1 Interface SILC BER interface SILC Key Exchange Library SILC SKE Interface SILC Connection Authentication Interface SILC SFTP Library SILC SFTP Interface SFTP Filesystems Interface SILC Core Library SILC Authentication Interface SILC Message Interface SILC Channel Interface SILC Command Interface SILC Notify Interface SILC Status Types SILC Modes SILC ID Interface SILC Argument Interface SILC Attributes Interface Packet Engine Interface SILC Public Key Payload Interface SILC Utility Library Basic Types and Definitions Data Buffer Interface Data Buffer Format Interface Hash Table Interface Memory Allocation Interface Data Stack (memory pool) Interface Finite State Machine Interface Thread Interface Mutual Exclusion Lock Interface Condition Variable Interface Atomic Operations Interface Network (TCP and UDP) Interface Scheduler Interface Asynchronous Operation Interface Abstract Stream Interface Socket Stream Interface File Descriptor Stream Interface File Utility Functions String Utility Interface Snprintf Interface UTF-8 String Interface Stringprep Interface Utility Functions List Interface Dynamic List Interface MIME Interface Time Utility Functions Logging Interface Config File Interface SILC HTTP Library SILC HTTP Server Interface SILC HTTP PHP Translator Resource Links SILC Project Website SILC Protocol Documentation SILC White Paper SILC FAQs
Function silc_asn1_encode SYNOPSIS
        SilcBool silc_asn1_encode(SilcAsn1 asn1, SilcBuffer dest, ...);
DESCRIPTION
        Encodes ASN.1 encoded buffer into `dest', from variable argument
        list of ASN.1 types.  The variable argument list forms the ASN.1
        trees and nodes that are encoded into the `dest'.  By default, the
        memory for `dest' is allocated from the `asn1', and the buffer becomes
        invalid either by calling silc_asn1_free, silc_asn1_uninit, or when
        silc_asn1_encode is called for the next time.

        If the SILC_ASN1_OPTS macro with SILC_ASN1_ALLOC option is given then
        the `dest' is dynamically allocated and caller must free it by itself.
        Alternatively if SILC_ASN1_ACCUMUL is given then memory is accumulated
        from `asn1' for `dest' and it is freed only when silc_asn1_free or
        silc_asn1_uninit is called.  Next call to silc_asn1_encode will not
        cancel the previous result, but will accumulate more memory for new
        result.

        The variable argument list is constructed by using various
        macros, for example SILC_ASN1_SEQUENCE, etc.  The variable argument
        list must always be ended with SILC_ASN1_END type.

        If encoding is successful this returns TRUE, FALSE on error.
EXAMPLE
        silc_asn1_encode(asn1, buf,
                         SILC_ASN1_SEQUENCE,
                           SILC_ASN1_BOOLEAN(bool_val),
                           SILC_ASN1_OCTET_STRING(string, string_len),
                           SILC_ASN1_SEQUENCE_T(0, 2),
                             SILC_ASN1_BOOLEAN_T(SILC_ASN1_EXPLICIT, 100, foo),
                           SILC_ASN1_END,
                           SILC_ASN1_OCTET_STRING_T(0, 1, string2, string2_len),
                         SILC_ASN1_END, SILC_ASN1_END);

        Creates ASN.1 tree that looks something like:

        buf ::= SEQUENCE {
          bool_val      BOOLEAN,
          string        OCTET-STRING,
                   [2]  SEQUENCE {
                          foo   [100] EXPLICIT BOOLEAN }
          string2  [1]  OCTET-STRING }
ASN.1 Interface SilcAsn1 SilcAsn1Struct SilcAsn1Options SilcAsn1Tag silc_asn1_alloc silc_asn1_free silc_asn1_init silc_asn1_uninit silc_asn1_encode silc_asn1_decode SILC_ASN1_OPTS SILC_ASN1_ANY SILC_ASN1_ANY_PRIMITIVE SILC_ASN1_SEQUENCE SILC_ASN1_SET SILC_ASN1_SEQUENCE_OF SILC_ASN1_SET_OF SILC_ASN1_CHOICE SILC_ASN1_BOOLEAN SILC_ASN1_INT SILC_ASN1_SHORT_INT SILC_ASN1_ENUM SILC_ASN1_BIT_STRING SILC_ASN1_NULL SILC_ASN1_OID SILC_ASN1_OCTET_STRING SILC_ASN1_UTF8_STRING SILC_ASN1_NUMERIC_STRING SILC_ASN1_PRINTABLE_STRING SILC_ASN1_TELETEX_STRING SILC_ASN1_IA5_STRING SILC_ASN1_VISIBLE_STRING SILC_ASN1_UNIVERSAL_STRING SILC_ASN1_BMP_STRING SILC_ASN1_UNRESTRICTED_STRING SILC_ASN1_GENERAL_STRING SILC_ASN1_UTC_TIME SILC_ASN1_GEN_TIME SILC_ASN1_END

Copyright © 2001 - 2007 SILC Project SILC Project Website | SILC Toolkit Reference Manual Index