[dpdk-dev] [PATCH] crypto/openssl: fix CCM processing 0 length source

[Ciara Power]

When given a source length 0 for CCM, the encryption and decryption
functions did not call the EVP_ENCRYPTUPDATE/EVP_DECRYPTUPDATE functions
with a src and dst, causing some FIPS validation failures for testcases
with PLen=0:

process_openssl_auth_encryption_ccm() line 1131:
Process openssl auth encryption ccm failed

Fixes: 1a4998dc4d94 ("crypto/openssl: support AES-CCM")
Cc: pablo.de.lara.guarch at intel.com
Cc: stable at dpdk.org

Signed-off-by: Ciara Power <ciara.power at intel.com>
---
 drivers/crypto/openssl/rte_openssl_pmd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/openssl/rte_openssl_pmd.c b/drivers/crypto/openssl/rte_openssl_pmd.c
index 47004337d5..37b969b916 100644
--- a/drivers/crypto/openssl/rte_openssl_pmd.c
+++ b/drivers/crypto/openssl/rte_openssl_pmd.c
@@ -1114,7 +1114,7 @@ process_openssl_auth_encryption_ccm(struct rte_mbuf *mbuf_src, int offset,
 		if (EVP_EncryptUpdate(ctx, NULL, &len, aad + 18, aadlen) <= 0)
 			goto process_auth_encryption_ccm_err;
 
-	if (srclen > 0)
+	if (srclen >= 0)
 		if (process_openssl_encryption_update(mbuf_src, offset, &dst,
 				srclen, ctx, 0))
 			goto process_auth_encryption_ccm_err;
@@ -1197,7 +1197,7 @@ process_openssl_auth_decryption_ccm(struct rte_mbuf *mbuf_src, int offset,
 		if (EVP_DecryptUpdate(ctx, NULL, &len, aad + 18, aadlen) <= 0)
 			goto process_auth_decryption_ccm_err;
 
-	if (srclen > 0)
+	if (srclen >= 0)
 		if (process_openssl_decryption_update(mbuf_src, offset, &dst,
 				srclen, ctx, 0))
 			return -EFAULT;
-- 
2.25.1