The patch titled
ecryptfs: packet and key management update for variable key size
has been added to the -mm tree. Its filename is
ecryptfs-packet-and-key-management-update-for-variable-key-size.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: ecryptfs: packet and key management update for variable key size
From: Mike Halcrow <mhalcrow@xxxxxxxxxx>
Modify packet and session key management code to support different key sizes.
Signed-off-by: Michael Halcrow <mhalcrow@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/ecryptfs/keystore.c | 21 +++++++++++----------
1 files changed, 11 insertions(+), 10 deletions(-)
diff -puN fs/ecryptfs/keystore.c~ecryptfs-packet-and-key-management-update-for-variable-key-size fs/ecryptfs/keystore.c
--- 25/fs/ecryptfs/keystore.c~ecryptfs-packet-and-key-management-update-for-variable-key-size Tue Jun 20 17:37:31 2006
+++ 25-akpm/fs/ecryptfs/keystore.c Tue Jun 20 17:37:31 2006
@@ -530,8 +530,6 @@ static int decrypt_session_key(struct ec
memcpy(crypt_stat->key, auth_tok->session_key.decrypted_key,
auth_tok->session_key.decrypted_key_size);
ECRYPTFS_SET_FLAG(crypt_stat->flags, ECRYPTFS_KEY_VALID);
- crypt_stat->key_size_bits =
- auth_tok->session_key.decrypted_key_size * 8;
ecryptfs_printk(KERN_DEBUG, "Decrypted session key:\n");
if (ecryptfs_verbosity > 0)
ecryptfs_dump_hex(crypt_stat->key,
@@ -810,11 +808,10 @@ write_tag_3_packet(char *dest, int max,
BUG();
ecryptfs_from_hex((*key_rec).sig, auth_tok->token.password.signature,
ECRYPTFS_SIG_SIZE);
- (*key_rec).enc_key_size_bits = crypt_stat->key_size_bits;
encrypted_session_key_valid = 0;
for (i = 0; i < (crypt_stat->key_size_bits / 8); i++)
encrypted_session_key_valid |=
- auth_tok->session_key.encrypted_key[i];
+ auth_tok->session_key.encrypted_key[i];
if (encrypted_session_key_valid) {
memcpy((*key_rec).enc_key,
auth_tok->session_key.encrypted_key,
@@ -824,6 +821,13 @@ write_tag_3_packet(char *dest, int max,
if (auth_tok->session_key.encrypted_key_size == 0)
auth_tok->session_key.encrypted_key_size =
(crypt_stat->key_size_bits / 8);
+ if (crypt_stat->key_size_bits == 192
+ && strcmp("aes", crypt_stat->cipher) == 0) {
+ memset((crypt_stat->key + 24), 0, 8);
+ auth_tok->session_key.encrypted_key_size = 32;
+ }
+ (*key_rec).enc_key_size_bits =
+ auth_tok->session_key.encrypted_key_size << 3;
if (ECRYPTFS_CHECK_FLAG(auth_tok->token.password.flags,
ECRYPTFS_SESSION_KEY_ENCRYPTION_KEY_SET)) {
ecryptfs_printk(KERN_DEBUG, "Using previously generated "
@@ -839,14 +843,11 @@ write_tag_3_packet(char *dest, int max,
ecryptfs_dump_hex(session_key_encryption_key, 16);
}
if (unlikely(ecryptfs_verbosity > 0)) {
- ecryptfs_printk(KERN_DEBUG, "Session key encryption key:"
- "\n");
+ ecryptfs_printk(KERN_DEBUG, "Session key encryption key:\n");
ecryptfs_dump_hex(session_key_encryption_key, 16);
}
- /* Encrypt the key with the key encryption key */
- /* Set up the scatterlists */
rc = virt_to_scatterlist(crypt_stat->key,
- crypt_stat->key_size_bits / 8, src_sg, 2);
+ (*key_rec).enc_key_size_bits / 8, src_sg, 2);
if (!rc) {
ecryptfs_printk(KERN_ERR, "Error generating scatterlist "
"for crypt_stat session key\n");
@@ -879,7 +880,7 @@ write_tag_3_packet(char *dest, int max,
ecryptfs_printk(KERN_DEBUG, "Encrypting [%d] bytes of the key\n",
crypt_stat->key_size_bits / 8);
crypto_cipher_encrypt(tfm, dest_sg, src_sg,
- (crypt_stat->key_size_bits / 8));
+ (*key_rec).enc_key_size_bits / 8);
ecryptfs_printk(KERN_DEBUG, "This should be the encrypted key:\n");
if (ecryptfs_verbosity > 0)
ecryptfs_dump_hex((*key_rec).enc_key,
_
Patches currently in -mm which might be from mhalcrow@xxxxxxxxxx are
ecryptfs-fs-makefile-and-fs-kconfig.patch
ecryptfs-fs-makefile-and-fs-kconfig-remove-ecrypt_debug-from-fs-kconfig.patch
ecryptfs-documentation.patch
ecryptfs-makefile.patch
ecryptfs-main-module-functions.patch
ecryptfs-main-module-functions-uint16_t-u16.patch
ecryptfs-header-declarations.patch
ecryptfs-header-declarations-update.patch
ecryptfs-header-declarations-update-convert-signed-data-types-to-unsigned-data-types.patch
ecryptfs-header-declarations-remove-unnecessary-ifndefs.patch
ecryptfs-superblock-operations.patch
ecryptfs-dentry-operations.patch
ecryptfs-file-operations.patch
ecryptfs-file-operations-remove-null-==-syntax.patch
ecryptfs-file-operations-remove-extraneous-read-of-inode-size-from-header.patch
ecryptfs-file-operations-fix.patch
ecryptfs-file-operations-fix-premature-release-of-file_info-memory.patch
ecryptfs-inode-operations.patch
ecryptfs-mmap-operations.patch
mark-address_space_operations-const-vs-ecryptfs-mmap-operations.patch
ecryptfs-keystore.patch
ecryptfs-crypto-functions.patch
ecryptfs-debug-functions.patch
ecryptfs-alpha-build-fix.patch
ecryptfs-convert-assert-to-bug_on.patch
ecryptfs-remove-unnecessary-null-checks.patch
ecryptfs-rewrite-ecryptfs_fsync.patch
ecryptfs-overhaul-file-locking.patch
ecryptfs-dont-muck-with-the-existing-nameidata-structures.patch
ecryptfs-asm-scatterlisth-linux-scatterlisth.patch
ecryptfs-support-for-larger-maximum-key-size.patch
ecryptfs-add-codes-for-additional-ciphers.patch
ecryptfs-unencrypted-key-size-based-on-encrypted-key-size.patch
ecryptfs-packet-and-key-management-update-for-variable-key-size.patch
ecryptfs-add-ecryptfs_-prefix-to-mount-options-key-size-parameter.patch
ecryptfs-set-the-key-size-from-the-default-for-the-mount.patch
ecryptfs-check-for-weak-keys.patch
ecryptfs-add-define-values-for-cipher-codes-from-rfc2440-openpgp.patch
ecryptfs-convert-bits-to-bytes.patch
ecryptfs-more-elegant-aes-key-size-manipulation.patch
ecryptfs-more-elegant-aes-key-size-manipulation-tidy.patch
ecryptfs-more-intelligent-use-of-tfm-objects.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
