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authorMimi Zohar <zohar@linux.vnet.ibm.com>2010-11-23 18:55:35 -0500
committerJames Morris <jmorris@namei.org>2010-11-29 08:55:29 +1100
commit7e70cb4978507cf31d76b90e4cfb4c28cad87f0c (patch)
treec5df493eef8d30dcb40d647b0528970eb4a391c6 /security/keys/Makefile
parentd00a1c72f7f4661212299e6cb132dfa58030bcdb (diff)
downloadlinux-7e70cb4978507cf31d76b90e4cfb4c28cad87f0c.tar.gz
keys: add new key-type encrypted
Define a new kernel key-type called 'encrypted'. Encrypted keys are kernel generated random numbers, which are encrypted/decrypted with a 'trusted' symmetric key. Encrypted keys are created/encrypted/decrypted in the kernel. Userspace only ever sees/stores encrypted blobs. Changelog: - bug fix: replaced master-key rcu based locking with semaphore (reported by David Howells) - Removed memset of crypto_shash_digest() digest output - Replaced verification of 'key-type:key-desc' using strcspn(), with one based on string constants. - Moved documentation to Documentation/keys-trusted-encrypted.txt - Replace hash with shash (based on comments by David Howells) - Make lengths/counts size_t where possible (based on comments by David Howells) Could not convert most lengths, as crypto expects 'unsigned int' (size_t: on 32 bit is defined as unsigned int, but on 64 bit is unsigned long) - Add 'const' where possible (based on comments by David Howells) - allocate derived_buf dynamically to support arbitrary length master key (fixed by Roberto Sassu) - wait until late_initcall for crypto libraries to be registered - cleanup security/Kconfig - Add missing 'update' keyword (reported/fixed by Roberto Sassu) - Free epayload on failure to create key (reported/fixed by Roberto Sassu) - Increase the data size limit (requested by Roberto Sassu) - Crypto return codes are always 0 on success and negative on failure, remove unnecessary tests. - Replaced kzalloc() with kmalloc() Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: David Safford <safford@watson.ibm.com> Reviewed-by: Roberto Sassu <roberto.sassu@polito.it> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/keys/Makefile')
-rw-r--r--security/keys/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/security/keys/Makefile b/security/keys/Makefile
index fcb107020b4a..6c941050f573 100644
--- a/security/keys/Makefile
+++ b/security/keys/Makefile
@@ -14,6 +14,7 @@ obj-y := \
user_defined.o
obj-$(CONFIG_TRUSTED_KEYS) += trusted_defined.o
+obj-$(CONFIG_ENCRYPTED_KEYS) += encrypted_defined.o
obj-$(CONFIG_KEYS_COMPAT) += compat.o
obj-$(CONFIG_PROC_FS) += proc.o
obj-$(CONFIG_SYSCTL) += sysctl.o