commit bfd9ed7f5c50cdfa310cb0f21c7706e99b780738
author Shawn Willden <swillden@google.com> Thu Jun 11 10:51:12 2015 -0600
committer Shawn Willden <swillden@google.com> Thu Jun 11 11:03:58 2015 -0600
tree eb8e3cd860438224c699620f8240f0bc4ec02ba0
parent 466cca5f2dbdfcbedc4b247af8a77c6cde2baf63

Make KM_PAD_NONE and KM_DIGEST_NONE mean any padding or digest.

Bug: 21777596
Change-Id: I3574156902c8e28b42f36462a9aef3f11ce938d3

rsa_operation.cpp

diff --git a/rsa_operation.cpp b/rsa_operation.cpp
index fac3ae7..edbaa9e 100644
--- a/rsa_operation.cpp
+++ b/rsa_operation.cpp
@@ -214,6 +214,8 @@
         }
         if (EVP_MD_size(digest_algorithm_) + PSS_OVERHEAD + MIN_SALT_SIZE >
             (size_t)EVP_PKEY_size(rsa_key_)) {
+            LOG_E("%d-byte digest cannot be used with %d-byte RSA key in PSS padding mode",
+                  EVP_MD_size(digest_algorithm_), EVP_PKEY_size(rsa_key_));
             *error = KM_ERROR_INCOMPATIBLE_DIGEST;
             return -1;
         }