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R_CM_ATTR Reference

This structure is used to store PKCS #9 authenticated and unauthenciated attributes.

The attributes structure can be added/retrieved to/from signed cryptographic messages via calls to R_CM_signer_set_attribute() and R_CM_signer_get_attribute() respectively.

This structure provides access to:

The R_CM index of the entity whose attributes are being accessed (read only).

The index of the attribute in the entity's attributes list (read only).

The security level of the attribute. See Attribute Security for valid values.

The object identifier (OID) value identifying the attribute type.

The length of the object identifier data.

The ASN.1 data type of the attribute (for example, octet string).

The binary attribute data.

The length of the attribute data.

Samples:: cm_sign_sm.c.

#include <r_cm.h>

struct r_cm_attr_st
{
    R_CM_INDEX entity_index;

    R_CM_INDEX attr_index;

    R_CM_ATTR_SECURITY security;

    unsigned char *oid;

    unsigned int oid_len;

    int data_type;

    unsigned char *data;

    unsigned int data_len;
};

Data Fields
R_CM_INDEX	entity_index
	The index to the entity holding attributes - for example, signer or recipient.
R_CM_INDEX	attr_index
	The index of the attribute in the list in the entity.
R_CM_ATTR_SECURITY	security
	Indicates the security type of the attribute. More...
unsigned char*	oid
	The Object Identifier (OID) value that identifies the attribute.
unsigned int	oid_len
	The length of the identifying Object Identifier (OID) value.
int	data_type
	The type of the data.
unsigned char*	data
	The attribute data.
unsigned int	data_len
	The length of the attribute data.

Field Documentation

R_CM_ATTR_SECURITY security

Indicates the security type of the attribute. See Attribute Security for valid values.

R_CM_ATTR Reference

Data Fields

Field Documentation