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-rw-r--r--crypto/nss_util.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/crypto/nss_util.h b/crypto/nss_util.h
index 2a2e8a5..b87b4a0 100644
--- a/crypto/nss_util.h
+++ b/crypto/nss_util.h
@@ -24,6 +24,8 @@ class Time;
// initialization functions.
namespace crypto {
+class SymmetricKey;
+
#if defined(USE_NSS)
// EarlySetupForNSSInit performs lightweight setup which must occur before the
// process goes multithreaded. This does not initialise NSS. For test, see
@@ -133,6 +135,14 @@ CRYPTO_EXPORT bool IsTPMTokenReady();
// Same as IsTPMTokenReady() except this attempts to initialize the token
// if necessary.
CRYPTO_EXPORT bool EnsureTPMTokenReady();
+
+// Gets supplemental user key. Creates one in NSS database if it does not exist.
+// The supplemental user key is used for AES encryption of user data that is
+// stored and protected by cryptohome. This additional layer of encryption of
+// provided to ensure that sensitive data wouldn't be exposed in plain text in
+// case when an attacker would somehow gain access to all content within
+// cryptohome.
+CRYPTO_EXPORT SymmetricKey* GetSupplementalUserKey();
#endif
// Convert a NSS PRTime value into a base::Time object.