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crypto/keymgmt: return actual length if key exported successfully

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When a key is successfully exported, the return value should reflect the actual length of the exported key data.

Signed-off-by: makejian <makejian@xiaomi.com>
This commit is contained in:
makejian 2025-09-17 21:39:18 +08:00 • committed by Donny(董九柱)
parent 3271427959
commit b663bfed8e
1 changed files with 16 additions and 6 deletions
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22
crypto/cryptosoft.c
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@ -504,9 +504,9 @@ static int swkey_export(FAR struct swkey_context_s *ctx,
return -ENOBUFS;
}
memcpy(buf, data->buf, buflen);
memcpy(buf, data->buf, data->size);
swkey_promote_cache_data(ctx, data);
return OK;
return data->size;
}
/* Key not in cache, get key from flash */
@ -545,7 +545,7 @@ static int swkey_export(FAR struct swkey_context_s *ctx,
swkey_promote_cache_data(ctx, data);
}
return OK;
return ret;
}
/****************************************************************************
@ -777,6 +777,7 @@ static int swkey_kprocess(FAR struct cryptkop *krp)
uint32_t pub_keyid;
uint32_t keylen;
uint32_t keyid;
int ret;
/* Sanity check */
@ -823,9 +824,18 @@ static int swkey_kprocess(FAR struct cryptkop *krp)
krp->krp_status = swkey_delete(ctx, keyid);
break;
case CRK_EXPORT_KEY:
krp->krp_status = swkey_export(ctx, keyid,
krp->krp_param[1].crp_p,
krp->krp_param[1].crp_nbits / 8);
ret = swkey_export(ctx, keyid,
krp->krp_param[1].crp_p,
krp->krp_param[1].crp_nbits / 8);
if (ret < 0)
{
krp->krp_status = ret;
}
else
{
krp->krp_param[1].crp_nbits = ret * 8;
}
break;
case CRK_GENERATE_AES_KEY:
if (krp->krp_param[1].crp_nbits != sizeof(uint32_t) * 8)