From bf53cf6a38dcd8d503d3abc82f8cc2eca7be03ed Mon Sep 17 00:00:00 2001 From: "Hook, Gary" Date: Tue, 14 May 2019 21:53:30 +0000 Subject: [PATCH] crypto: ccp - Fix 3DES complaint from ccp-crypto module [ Upstream commit 89646fdda4cae203185444ac7988835f36a21ee1 ] Crypto self-tests reveal an error: alg: skcipher: cbc-des3-ccp encryption test failed (wrong output IV) on test vector 0, cfg="in-place" The offset value should not be recomputed when retrieving the context. Also, a code path exists which makes decisions based on older (version 3) hardware; a v3 device deosn't support 3DES so remove this check. Fixes: 990672d48515 ('crypto: ccp - Enable 3DES function on v5 CCPs') Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/ccp/ccp-ops.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) diff --git a/drivers/crypto/ccp/ccp-ops.c b/drivers/crypto/ccp/ccp-ops.c index 1e2e42106dee..4b48b8523a40 100644 --- a/drivers/crypto/ccp/ccp-ops.c +++ b/drivers/crypto/ccp/ccp-ops.c @@ -1293,6 +1293,9 @@ static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) int ret; /* Error checks */ + if (cmd_q->ccp->vdata->version < CCP_VERSION(5, 0)) + return -EINVAL; + if (!cmd_q->ccp->vdata->perform->des3) return -EINVAL; @@ -1375,8 +1378,6 @@ static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) * passthru option to convert from big endian to little endian. */ if (des3->mode != CCP_DES3_MODE_ECB) { - u32 load_mode; - op.sb_ctx = cmd_q->sb_ctx; ret = ccp_init_dm_workarea(&ctx, cmd_q, @@ -1392,12 +1393,8 @@ static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) if (ret) goto e_ctx; - if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) - load_mode = CCP_PASSTHRU_BYTESWAP_NOOP; - else - load_mode = CCP_PASSTHRU_BYTESWAP_256BIT; ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, - load_mode); + CCP_PASSTHRU_BYTESWAP_256BIT); if (ret) { cmd->engine_error = cmd_q->cmd_error; goto e_ctx; @@ -1459,10 +1456,6 @@ static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) } /* ...but we only need the last DES3_EDE_BLOCK_SIZE bytes */ - if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) - dm_offset = CCP_SB_BYTES - des3->iv_len; - else - dm_offset = 0; ccp_get_dm_area(&ctx, dm_offset, des3->iv, 0, DES3_EDE_BLOCK_SIZE); } -- 2.11.0