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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>
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- common/Makefile 2 additions, 0 deletionscommon/Makefile
- common/cmd_blob.c 109 additions, 0 deletionscommon/cmd_blob.c
- drivers/crypto/fsl/Makefile 1 addition, 0 deletionsdrivers/crypto/fsl/Makefile
- drivers/crypto/fsl/fsl_blob.c 61 additions, 0 deletionsdrivers/crypto/fsl/fsl_blob.c
- drivers/crypto/fsl/jobdesc.c 80 additions, 0 deletionsdrivers/crypto/fsl/jobdesc.c
- drivers/crypto/fsl/jobdesc.h 11 additions, 0 deletionsdrivers/crypto/fsl/jobdesc.h
- drivers/crypto/fsl/jr.c 126 additions, 1 deletiondrivers/crypto/fsl/jr.c
- include/fsl_sec.h 33 additions, 1 deletioninclude/fsl_sec.h
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