Add PKCS7_NO_DUAL_CONTENT flag

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>

1 files changed, 12 insertions, 4 deletions

diff --git a/crypto/pkcs7/pk7_smime.c b/crypto/pkcs7/pk7_smime.c
index ed5268fd0f..8027640de3 100644
--- a/crypto/pkcs7/pk7_smime.c
+++ b/crypto/pkcs7/pk7_smime.c
@@ -279,10 +279,18 @@ int PKCS7_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store,
         return 0;
     }
 
-    /* Check for data and content: two sets of data */
-    if (!PKCS7_get_detached(p7) && indata) {
-        PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_CONTENT_AND_DATA_PRESENT);
-        return 0;
+    if (flags & PKCS7_NO_DUAL_CONTENT) {
+        /*
+         * This was originally "#if 0" because we thought that only old broken
+         * Netscape did this.  It turns out that Authenticode uses this kind
+         * of "extended" PKCS7 format, and things like UEFI secure boot and
+         * tools like osslsigncode need it.  In Authenticode the verification
+         * process is different, but the existing PKCs7 verification works.
+         */
+        if (!PKCS7_get_detached(p7) && indata) {
+            PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_CONTENT_AND_DATA_PRESENT);
+            return 0;
+        }
     }
 
     sinfos = PKCS7_get_signer_info(p7);