krb5_copy_keyblock3

Usage

Library

Kerberos 5 Library (libkrb5, -lkrb5)

Overview

krb5_keyblock holds the encryption key for a specific encryption type. There is no component inside krb5_keyblock that is directly referable.

krb5_keyblock_get_enctype() returns the encryption type of the keyblock.

krb5_copy_keyblock() makes a copy the keyblock inblock to the output out. out should be freed by the caller with krb5_free_keyblock.

krb5_copy_keyblock_contents() copies the contents of inblock to the to keyblock. The destination keyblock is overritten.

krb5_free_keyblock() zeros out and frees the content and the keyblock itself.

krb5_free_keyblock_contents() zeros out and frees the content of the keyblock.

krb5_generate_random_keyblock() creates a new content of the keyblock key of type encrytion type type. The content of key is overwritten and not freed, so the caller should be sure it is freed before calling the function.

krb5_generate_subkey() generates a subkey of the same type as key. The caller must free the subkey with krb5_free_keyblock.

krb5_generate_subkey_extended() generates a subkey of the specified encryption type type. If type is ETYPE_NULL, of the same type as key. The caller must free the subkey with krb5_free_keyblock.

krb5_keyblock_init() Fill in key with key data of type enctype from data of length size. Key should be freed using krb5_free_keyblock_contents().

krb5_keyblock_zero() zeros out the keyblock to to make sure no keymaterial is in memory. Note that krb5_free_keyblock_contents() also zeros out the memory.

krb5_random_to_key() converts the random bytestring to a protocol key according to Kerberos crypto frame work. It the resulting key will be of type enctype. It may be assumed that all the bits of the input string are equally random, even though the entropy present in the random source may be limited