diff options
| author | David Howells <dhowells@redhat.com> | 2020-11-19 09:46:48 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2025-03-02 21:43:14 +0000 |
| commit | 025ac491f4eeb48c03353719f0de20a6db36b826 (patch) | |
| tree | 77db08caaf9da4947f74ce4ddf28c191a2b1022c /include/crypto | |
| parent | crypto/krb5: Implement Kerberos crypto core (diff) | |
| download | linux-025ac491f4eeb48c03353719f0de20a6db36b826.tar.gz linux-025ac491f4eeb48c03353719f0de20a6db36b826.zip | |
crypto/krb5: Add an API to query the layout of the crypto section
Provide some functions to allow the called to find out about the layout of
the crypto section:
(1) Calculate, for a given size of data, how big a buffer will be
required to hold it and where the data will be within it.
(2) Calculate, for an amount of buffer, what's the maximum size of data
that will fit therein, and where it will start.
(3) Determine where the data will be in a received message.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Chuck Lever <chuck.lever@oracle.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Simon Horman <horms@kernel.org>
cc: linux-afs@lists.infradead.org
cc: linux-nfs@vger.kernel.org
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/krb5.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/crypto/krb5.h b/include/crypto/krb5.h index 8fa6715ab35b..b414141b8b42 100644 --- a/include/crypto/krb5.h +++ b/include/crypto/krb5.h @@ -101,5 +101,14 @@ struct krb5_enctype { * krb5_api.c */ const struct krb5_enctype *crypto_krb5_find_enctype(u32 enctype); +size_t crypto_krb5_how_much_buffer(const struct krb5_enctype *krb5, + enum krb5_crypto_mode mode, + size_t data_size, size_t *_offset); +size_t crypto_krb5_how_much_data(const struct krb5_enctype *krb5, + enum krb5_crypto_mode mode, + size_t *_buffer_size, size_t *_offset); +void crypto_krb5_where_is_the_data(const struct krb5_enctype *krb5, + enum krb5_crypto_mode mode, + size_t *_offset, size_t *_len); #endif /* _CRYPTO_KRB5_H */ |