Function

SecKeychainItemCopyAttributesAndData

Retrieves the data and/or attributes stored in the given keychain item.

Declaration

OSStatus SecKeychainItemCopyAttributesAndData(SecKeychainItemRef itemRef, SecKeychainAttributeInfo *info, SecItemClass *itemClass, SecKeychainAttributeList * _Nullable *attrList, UInt32 *length, void * _Nullable *outData);

Parameters

itemRef

A reference to the keychain item from which you wish to retrieve data or attributes.

info

A pointer to a list of tags and formats of attributes to retrieve. You can call SecKeychainAttributeInfoForItemID to obtain a list of all possible attribute tags and formats for the item's class. Pass NULL if you don’t wish to retrieve any attributes.

itemClass

On return, the item’s class. Pass NULL if not required. See SecItemClass for valid constants.

attrList

On return, the retrieved attributes and their values . Pass NULL if not required. You must call the function SecKeychainItemFreeAttributesAndData when you no longer need the attributes and values.

length

On return, the actual length of the data returned in the outData parameter.

outData

On return, the data in this item. Pass NULL if not required. You must call the function SecKeychainItemFreeAttributesAndData when you no longer need the data.

Return Value

Discussion

This function returns the data and attributes of a specific keychain item.

You can use the SecKeychainSearchCopyNext function to search for a keychain item if you don’t already have the item’s reference object. To find and obtain data from a password keychain item, use the SecKeychainFindInternetPassword or SecKeychainFindGenericPassword function.

You should pair the SecKeychainItemCopyAttributesAndData function with the SecKeychainItemModifyAttributesAndData function, as these functions handle more attributes than are support by the old Keychain Manager and passing them into older calls yields an invalid attribute error. Use the functions SecKeychainItemModifyContent and SecKeychainItemCopyContent when dealing with older Keychain Manager functions.

If the keychain item data is encrypted, this function decrypts the data before returning it to you. If the calling application is not in the list of trusted applications, the user is prompted before access is allowed. If the access controls for this item do not allow decryption, the function returns the errSecAuthFailed result code.

See Also

Legacy Keychain Item Management

SecKeychainItemModifyAttributesAndData

Updates an existing keychain item after changing its attributes or data.

SecKeychainItemFreeAttributesAndData

Releases the memory used by the keychain attribute list and/or the keychain data retrieved in a call to SecKeychainItemCopyAttributesAndData.

SecKeychainItemCopyContent

Copies the data and attributes stored in the given keychain item.

SecKeychainItemModifyContent

Updates an existing keychain item after changing its attributes and/or data.

SecKeychainItemFreeContent

Releases the memory used by the keychain attribute list and the keychain data retrieved in a call to the SecKeychainItemCopyContent function.

SecKeychainItemCopyKeychain

Returns the keychain object of a given keychain item.

SecKeychainItemDelete

Deletes a keychain item from the default keychain’s permanent data store.

SecKeychainAttrType

The keychain attribute type.

SecKeychainAttribute

A structure that holds a single keychain attribute.

SecKeychainAttributePtr

A pointer to a keychain attribute structure.

SecKeychainAttributeList

A list of keychain attributes.