From 990672d48515ce09c76fcf1ceccee48b0dd1942b Mon Sep 17 00:00:00 2001 From: Gary R Hook Date: Wed, 15 Mar 2017 13:20:52 -0500 Subject: crypto: ccp - Enable 3DES function on v5 CCPs Wire up support for Triple DES in ECB mode. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu --- include/linux/ccp.h | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 56 insertions(+), 1 deletion(-) (limited to 'include/linux/ccp.h') diff --git a/include/linux/ccp.h b/include/linux/ccp.h index 90a1fbe84219..fa0261748920 100644 --- a/include/linux/ccp.h +++ b/include/linux/ccp.h @@ -292,6 +292,60 @@ struct ccp_sha_engine { * final sha cmd */ }; +/***** 3DES engine *****/ +enum ccp_des3_mode { + CCP_DES3_MODE_ECB = 0, + CCP_DES3_MODE_CBC, + CCP_DES3_MODE_CFB, + CCP_DES3_MODE__LAST, +}; + +enum ccp_des3_type { + CCP_DES3_TYPE_168 = 1, + CCP_DES3_TYPE__LAST, + }; + +enum ccp_des3_action { + CCP_DES3_ACTION_DECRYPT = 0, + CCP_DES3_ACTION_ENCRYPT, + CCP_DES3_ACTION__LAST, +}; + +/** + * struct ccp_des3_engine - CCP SHA operation + * @type: Type of 3DES operation + * @mode: cipher mode + * @action: 3DES operation (decrypt/encrypt) + * @key: key to be used for this 3DES operation + * @key_len: length of key (in bytes) + * @iv: IV to be used for this AES operation + * @iv_len: length in bytes of iv + * @src: input data to be used for this operation + * @src_len: length of input data used for this operation (in bytes) + * @dst: output data produced by this operation + * + * Variables required to be set when calling ccp_enqueue_cmd(): + * - type, mode, action, key, key_len, src, dst, src_len + * - iv, iv_len for any mode other than ECB + * + * The iv variable is used as both input and output. On completion of the + * 3DES operation the new IV overwrites the old IV. + */ +struct ccp_des3_engine { + enum ccp_des3_type type; + enum ccp_des3_mode mode; + enum ccp_des3_action action; + + struct scatterlist *key; + u32 key_len; /* In bytes */ + + struct scatterlist *iv; + u32 iv_len; /* In bytes */ + + struct scatterlist *src, *dst; + u64 src_len; /* In bytes */ +}; + /***** RSA engine *****/ /** * struct ccp_rsa_engine - CCP RSA operation @@ -541,7 +595,7 @@ struct ccp_ecc_engine { enum ccp_engine { CCP_ENGINE_AES = 0, CCP_ENGINE_XTS_AES_128, - CCP_ENGINE_RSVD1, + CCP_ENGINE_DES3, CCP_ENGINE_SHA, CCP_ENGINE_RSA, CCP_ENGINE_PASSTHRU, @@ -589,6 +643,7 @@ struct ccp_cmd { union { struct ccp_aes_engine aes; struct ccp_xts_aes_engine xts; + struct ccp_des3_engine des3; struct ccp_sha_engine sha; struct ccp_rsa_engine rsa; struct ccp_passthru_engine passthru; -- cgit