diff options
Diffstat (limited to 'net/ceph/crypto.c')
| -rw-r--r-- | net/ceph/crypto.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/net/ceph/crypto.c b/net/ceph/crypto.c index 5601732cf4fa..2b98daffe9af 100644 --- a/net/ceph/crypto.c +++ b/net/ceph/crypto.c @@ -285,6 +285,31 @@ int ceph_crypt(const struct ceph_crypto_key *key, bool encrypt, } } +int ceph_crypt_data_offset(const struct ceph_crypto_key *key) +{ + switch (key->type) { + case CEPH_CRYPTO_NONE: + case CEPH_CRYPTO_AES: + return 0; + default: + BUG(); + } +} + +int ceph_crypt_buflen(const struct ceph_crypto_key *key, int data_len) +{ + switch (key->type) { + case CEPH_CRYPTO_NONE: + return data_len; + case CEPH_CRYPTO_AES: + /* PKCS#7 padding at the end */ + return data_len + AES_BLOCK_SIZE - + (data_len & (AES_BLOCK_SIZE - 1)); + default: + BUG(); + } +} + static int ceph_key_preparse(struct key_preparsed_payload *prep) { struct ceph_crypto_key *ckey; |