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asn1_string_new(3) [opendarwin man page]

ASN1_STRING_new(3)						      OpenSSL							ASN1_STRING_new(3)

NAME
ASN1_STRING_new, ASN1_STRING_type_new, ASN1_STRING_free - ASN1_STRING allocation functions SYNOPSIS
ASN1_STRING * ASN1_STRING_new(void); ASN1_STRING * ASN1_STRING_type_new(int type); void ASN1_STRING_free(ASN1_STRING *a); DESCRIPTION
ASN1_STRING_new() returns an allocated ASN1_STRING structure. Its type is undefined. ASN1_STRING_type_new() returns an allocated ASN1_STRING structure of type type. ASN1_STRING_free() frees up a. NOTES
Other string types call the ASN1_STRING functions. For example ASN1_OCTET_STRING_new() calls ASN1_STRING_type(V_ASN1_OCTET_STRING). RETURN VALUES
ASN1_STRING_new() and ASN1_STRING_type_new() return a valid ASN1_STRING structure or NULL if an error occurred. ASN1_STRING_free() does not return a value. SEE ALSO
ERR_get_error(3) HISTORY
TBA 0.9.7d 2003-11-20 ASN1_STRING_new(3)

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ASN1_STRING_length(3)						      OpenSSL						     ASN1_STRING_length(3)

NAME
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 SYNOPSIS
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); DESCRIPTION
These functions allow an ASN1_STRING structure to be manipulated. ASN1_STRING_length() returns the length of the content of x. ASN1_STRING_data() returns an internal pointer to the data of x. Since this is an internal pointer it should not be freed or modified in any way. ASN1_STRING_dup() returns a copy of the structure a. ASN1_STRING_cmp() compares a and b returning 0 if the two are identical. The string types and content are compared. ASN1_STRING_set() sets the data of string str to the buffer data or length len. The supplied data is copied. If len is -1 then the length is determined by strlen(data). ASN1_STRING_type() returns the type of x, using standard constants such as V_ASN1_OCTET_STRING. ASN1_STRING_to_UTF8() converts the string in to UTF8 format, the converted data is allocated in a buffer in *out. The length of out is returned or a negative error code. The buffer *out should be free using OPENSSL_free(). NOTES
Almost all ASN1 types in OpenSSL are represented as an ASN1_STRING structure. Other types such as ASN1_OCTET_STRING are simply typedefed to ASN1_STRING and the functions call the ASN1_STRING equivalents. ASN1_STRING is also used for some CHOICE types which consist entirely of primitive string types such as DirectoryString and Time. These functions should not be used to examine or modify ASN1_INTEGER or ASN1_ENUMERATED types: the relevant INTEGER or ENUMERATED 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(). RETURN VALUES
SEE ALSO
ERR_get_error(3) HISTORY
0.9.8 2009-04-03 ASN1_STRING_length(3)
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