X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=gcrypt.c;h=ff4dab37ea4f5323e7545f5a755c38c105fdc6c0;hb=7e611b37e41f0ec7ec6d3173b7e88ed5b9b3a276;hp=5c05ba20badce165aa1f1369136ab90e5d9b41d9;hpb=aa066efd962198bbeed8e5bcee57572f9e15455a;p=paraslash.git

diff --git a/gcrypt.c b/gcrypt.c
index 5c05ba20..ff4dab37 100644
--- a/gcrypt.c
+++ b/gcrypt.c
@@ -66,10 +66,29 @@ void crypt_init(void)
 			req_ver, gcry_check_version(NULL));
 		exit(EXIT_FAILURE);
 	}
+
+	/*
+	 * Allocate a pool of secure memory. This also drops privileges where
+	 * needed.
+	 */
+	gcry_control(GCRYCTL_INIT_SECMEM, 65536, 0);
+
+	/* Tell Libgcrypt that initialization has completed. */
+	gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
+
 	get_random_bytes_or_die((unsigned char *)&seed, sizeof(seed));
 	srandom(seed);
 }
 
+void crypt_shutdown(void)
+{
+	/*
+	 * WK does not see a way to apply a patch for the sake of Valgrind, so
+	 * as of 2018 libgrypt has no deinitialization routine to free the
+	 * resources on exit.
+	 */
+}
+
 /** S-expression for the public part of an RSA key. */
 #define RSA_PUBKEY_SEXP "(public-key (rsa (n %m) (e %m)))"
 /** S-expression for a private RSA key. */