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It is not clear from documenting comments, specifications, or code usage what value the gss_krb5_enctype.blocksize field is supposed to store. The "encryption blocksize" depends only on the cipher being used, so that value can be derived where it's needed instead of stored as a constant. RFC 3961 Section 5.2 says: > cipher block size, c > This is the block size of the block cipher underlying the > encryption and decryption functions indicated above, used for key > derivation and for the size of the message confounder and initial > vector. (If a block cipher is not in use, some comparable > parameter should be determined.) It must be at least 5 octets. > > This is not actually an independent parameter; rather, it is a > property of the functions E and D. It is listed here to clarify > the distinction between it and the message block size, m. In the Linux kernel's implemenation of the SunRPC RPCSEC GSS Kerberos 5 mechanism, the cipher block size, which is dependent on the encryption and decryption transforms, is used only in krb5_derive_key(), so it is straightforward to replace it. Tested-by: Scott Mayhew <smayhew@redhat.com> Reviewed-by: Simo Sorce <simo@redhat.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.