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authorDmitry Kasatkin <dmitry.kasatkin@intel.com>2011-10-14 15:25:16 +0300
committerDmitry Kasatkin <dmitry.kasatkin@intel.com>2011-11-09 12:10:37 +0200
commit051dbb918c7fb7da8e64a2cd0d804ba73399709f (patch)
tree34d547e74ef6edb7feeda4a8291b221cc016c393 /lib/Kconfig
parent7e8dec918ef8e0f68b4937c3c50fa57002077a4d (diff)
downloadlinux-051dbb918c7fb7da8e64a2cd0d804ba73399709f.tar.gz
crypto: digital signature verification support
This patch implements RSA digital signature verification using GnuPG library. The format of the signature and the public key is defined by their respective headers. The signature header contains version information, algorithm, and keyid, which was used to generate the signature. The key header contains version and algorythim type. The payload of the signature and the key are multi-precision integers. The signing and key management utilities evm-utils provide functionality to generate signatures and load keys into the kernel keyring. When the key is added to the kernel keyring, the keyid defines the name of the key. Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com> Acked-by: Mimi Zohar <zohar@us.ibm.com>
Diffstat (limited to 'lib/Kconfig')
-rw-r--r--lib/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index d411de53be4..c1a89185fe6 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -293,4 +293,12 @@ config MPILIB_EXTRA
This code in unnecessary for RSA digital signature verification,
and can be compiled if needed.
+config DIGSIG
+ tristate "In-kernel signature checker"
+ depends on CRYPTO
+ select MPILIB
+ help
+ Digital signature verification. Currently only RSA is supported.
+ Implementation is done using GnuPG MPI library
+
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