diff options
Diffstat (limited to 'drivers/crypto/nx/nx-aes-ccm.c')
| -rw-r--r-- | drivers/crypto/nx/nx-aes-ccm.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/crypto/nx/nx-aes-ccm.c b/drivers/crypto/nx/nx-aes-ccm.c index ef5eae6..39d4224 100644 --- a/drivers/crypto/nx/nx-aes-ccm.c +++ b/drivers/crypto/nx/nx-aes-ccm.c @@ -271,10 +271,15 @@ static int ccm_nx_decrypt(struct aead_request *req, unsigned int nbytes = req->cryptlen; unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req)); struct nx_ccm_priv *priv = &nx_ctx->priv.ccm; + unsigned long irq_flags; int rc = -1; - if (nbytes > nx_ctx->ap->databytelen) - return -EINVAL; + spin_lock_irqsave(&nx_ctx->lock, irq_flags); + + if (nbytes > nx_ctx->ap->databytelen) { + rc = -EINVAL; + goto out; + } nbytes -= authsize; @@ -308,6 +313,7 @@ static int ccm_nx_decrypt(struct aead_request *req, rc = memcmp(csbcpb->cpb.aes_ccm.out_pat_or_mac, priv->oauth_tag, authsize) ? -EBADMSG : 0; out: + spin_unlock_irqrestore(&nx_ctx->lock, irq_flags); return rc; } @@ -318,10 +324,15 @@ static int ccm_nx_encrypt(struct aead_request *req, struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; unsigned int nbytes = req->cryptlen; unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req)); + unsigned long irq_flags; int rc = -1; - if (nbytes > nx_ctx->ap->databytelen) - return -EINVAL; + spin_lock_irqsave(&nx_ctx->lock, irq_flags); + + if (nbytes > nx_ctx->ap->databytelen) { + rc = -EINVAL; + goto out; + } rc = generate_pat(desc->info, req, nx_ctx, authsize, nbytes, csbcpb->cpb.aes_ccm.in_pat_or_b0); @@ -350,6 +361,7 @@ static int ccm_nx_encrypt(struct aead_request *req, req->dst, nbytes, authsize, SCATTERWALK_TO_SG); out: + spin_unlock_irqrestore(&nx_ctx->lock, irq_flags); return rc; } |