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CryptoPkg/BaseCryptLib: Eliminate extra buffer copy in Pkcs7Verify() 

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3617

Create a read-only openSSL BIO wrapper for the existing input
buffer passed to Pkcs7Verify() instead of copying the buffer
into an empty writable BIO which causes memory allocations
within openSSL.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Xiaoyu Lu <xiaoyux.lu@intel.com>
Cc: Guomin Jiang <guomin.jiang@intel.com>
Signed-off-by: Bob Morgan <bobm@nvidia.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Bob Morgan 2021-09-11 05:34:14 +08:00 committed by mergify[bot]
parent ba4ae92234
commit f22feb0e3b
1 changed files with 1 additions and 5 deletions
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6
CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7VerifyCommon.c
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@ -864,15 +864,11 @@ Pkcs7Verify (
// For generic PKCS#7 handling, InData may be NULL if the content is present
// in PKCS#7 structure. So ignore NULL checking here.
//
DataBio = BIO_new (BIO_s_mem ());
DataBio = BIO_new_mem_buf (InData, (int) DataLength);
if (DataBio == NULL) {
goto _Exit;
}
if (BIO_write (DataBio, InData, (int) DataLength) <= 0) {
goto _Exit;
}
//
// Allow partial certificate chains, terminated by a non-self-signed but
// still trusted intermediate certificate. Also disable time checks.