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crypto/fsl: Clear the memory when blob decapsulation fails

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issue: blob decapsulation operation store the decrypted data
       in memory even if ICV check failed.

fix: clear the blob data output memory.

Fixes: c5de15cbc8 (crypto/fsl: Add command for encapsulating/decapsulating blobs)
Signed-off-by: Gaurav Jain <gaurav.jain@nxp.com>
Reviewed-by: Kshitiz Varshney <kshitiz.varshney@nxp.com>
Tested-by: Kshitiz Varshney <kshitiz.varshney@nxp.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
This commit is contained in:
Gaurav Jain 2022-04-15 16:52:34 +05:30 committed by Stefano Babic
parent e3b330e489
commit cc84edddd1
1 changed files with 4 additions and 0 deletions
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4
drivers/crypto/fsl/fsl_blob.c
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@ -71,6 +71,10 @@ int blob_decap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
ret = run_descriptor_jr(desc);
if (ret) {
/* clear the blob data output buffer */
memset(dst, 0x00, len);
size = ALIGN(len, ARCH_DMA_MINALIGN);
flush_dcache_range((unsigned long)dst, (unsigned long)dst + size);
printf("Error in blob decapsulation: %d\n", ret);
} else {
size = ALIGN(len, ARCH_DMA_MINALIGN);