Manual Pages for UNIX Operating System command usage for man ASN1_STRING_data

OpenSSL                              ASN1_STRING_length(3openssl)



NNNNAAAAMMMMEEEE
     ASN1_STRING_dup, ASN1_STRING_cmp, ASN1_STRING_set,
     ASN1_STRING_length, ASN1_STRING_length_set,
     ASN1_STRING_type, ASN1_STRING_data - ASN1_STRING utility
     functions

SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
      #include 

      int ASN1_STRING_length(ASN1_STRING *x);
      unsigned char * ASN1_STRING_data(ASN1_STRING *x);

      ASN1_STRING * ASN1_STRING_dup(ASN1_STRING *a);

      int ASN1_STRING_cmp(ASN1_STRING *a, ASN1_STRING *b);

      int ASN1_STRING_set(ASN1_STRING *str, const void *data, int len);

      int ASN1_STRING_type(ASN1_STRING *x);

      int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in);


DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
     These functions allow an AAAASSSSNNNN1111_SSSSTTTTRRRRIIIINNNNGGGG structure to be
     manipulated.

     ASN1_STRING_length() returns the length of the content of xxxx.

     ASN1_STRING_data() returns an internal pointer to the data
     of xxxx.  Since this is an internal pointer it should nnnnooootttt be
     freed or modified in any way.

     ASN1_STRING_dup() returns a copy of the structure aaaa.

     ASN1_STRING_cmp() compares aaaa and bbbb returning 0 if the two
     are identical. The string types and content are compared.

     ASN1_STRING_set() sets the data of string ssssttttrrrr to the buffer
     ddddaaaattttaaaa or length lllleeeennnn. The supplied data is copied. If lllleeeennnn is
     -1 then the length is determined by strlen(data).

     ASN1_STRING_type() returns the type of xxxx, using standard
     constants such as VVVV_AAAASSSSNNNN1111_OOOOCCCCTTTTEEEETTTT_SSSSTTTTRRRRIIIINNNNGGGG.

     ASN1_STRING_to_UTF8() converts the string iiiinnnn to UTF8 format,
     the converted data is allocated in a buffer in ****oooouuuutttt. The
     length of oooouuuutttt is returned or a negative error code. The
     buffer ****oooouuuutttt should be free using OPENSSL_free().

NNNNOOOOTTTTEEEESSSS
     Almost all ASN1 types in OpenSSL are represented as an



27/Mar/2010            Last change: 0.9.8o                      1






OpenSSL                              ASN1_STRING_length(3openssl)



     AAAASSSSNNNN1111_SSSSTTTTRRRRIIIINNNNGGGG structure. Other types such as AAAASSSSNNNN1111_OOOOCCCCTTTTEEEETTTT_SSSSTTTTRRRRIIIINNNNGGGG
     are simply typedefed to AAAASSSSNNNN1111_SSSSTTTTRRRRIIIINNNNGGGG and the functions call
     the AAAASSSSNNNN1111_SSSSTTTTRRRRIIIINNNNGGGG equivalents.  AAAASSSSNNNN1111_SSSSTTTTRRRRIIIINNNNGGGG is also used for
     some CCCCHHHHOOOOIIIICCCCEEEE types which consist entirely of primitive string
     types such as DDDDiiiirrrreeeeccccttttoooorrrryyyySSSSttttrrrriiiinnnngggg and TTTTiiiimmmmeeee.

     These functions should nnnnooootttt be used to examine or modify
     AAAASSSSNNNN1111_IIIINNNNTTTTEEEEGGGGEEEERRRR or AAAASSSSNNNN1111_EEEENNNNUUUUMMMMEEEERRRRAAAATTTTEEEEDDDD types: the relevant IIIINNNNTTTTEEEEGGGGEEEERRRR
     or EEEENNNNUUUUMMMMEEEERRRRAAAATTTTEEEEDDDD utility functions should be used instead.

     In general it cannot be assumed that the data returned by
     ASN1_STRING_data() is null terminated or does not contain
     embedded nulls. The actual format of the data will depend on
     the actual string type itself: for example for and IA5String
     the data will be ASCII, for a BMPString two bytes per
     character in big endian format, UTF8String will be in UTF8
     format.

     Similar care should be take to ensure the data is in the
     correct format when calling ASN1_STRING_set().

RRRREEEETTTTUUUURRRRNNNN VVVVAAAALLLLUUUUEEEESSSS
SSSSEEEEEEEE AAAALLLLSSSSOOOO
     ERR_get_error(3)

HHHHIIIISSSSTTTTOOOORRRRYYYY


























27/Mar/2010            Last change: 0.9.8o                      2