crypto/fsl: Add command for encapsulating/decapsulating blobs

Freescale's SEC block has built-in Blob Protocol which provides
a method for protecting user-defined data across system power
cycles. SEC block protects data in a data structure called a Blob,
which provides both confidentiality and integrity protection.

Encapsulating data as a blob
Each time that the Blob Protocol is used to protect data, a
different randomly generated key is used to encrypt the data.
This random key is itself encrypted using a key which is derived
from SoC's non volatile secret key and a 16 bit Key identifier.
The resulting encrypted key along with encrypted data is called a blob.
The non volatile secure key is available for use only during secure boot.

During decapsulation, the reverse process is performed to get back
the original data.

Commands added
--------------
    blob enc - encapsulating data as a cryptgraphic blob
    blob dec - decapsulating cryptgraphic blob to get the data

Commands Syntax
---------------
	blob enc src dst len km

	Encapsulate and create blob of data $len bytes long
	at address $src and store the result at address $dst.
	$km is the 16 byte key modifier is also required for
	generation/use as key for cryptographic operation. Key
	modifier should be 16 byte long.

	blob dec src dst len km

	Decapsulate the  blob of data at address $src and
	store result of $len byte at addr $dst.
	$km is the 16 byte key modifier is also required for
	generation/use as key for cryptographic operation. Key
	modifier should be 16 byte long.

Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/crypto/fsl/jobdesc.h b/drivers/crypto/fsl/jobdesc.h
index ed61579ac0..3cf7226de2 100644
--- a/drivers/crypto/fsl/jobdesc.h
+++ b/drivers/crypto/fsl/jobdesc.h
@@ -11,8 +11,19 @@
 #include <common.h>
 #include <asm/io.h>
 
+#define KEY_IDNFR_SZ_BYTES		16
+
 void inline_cnstr_jobdesc_hash(uint32_t *desc,
 			  const uint8_t *msg, uint32_t msgsz, uint8_t *digest,
 			  u32 alg_type, uint32_t alg_size, int sg_tbl);
 
+void inline_cnstr_jobdesc_blob_encap(uint32_t *desc, uint8_t *key_idnfr,
+				     uint8_t *plain_txt, uint8_t *enc_blob,
+				     uint32_t in_sz);
+
+void inline_cnstr_jobdesc_blob_decap(uint32_t *desc, uint8_t *key_idnfr,
+				     uint8_t *enc_blob, uint8_t *plain_txt,
+				     uint32_t out_sz);
+
+void inline_cnstr_jobdesc_rng_instantiation(uint32_t *desc);
 #endif