diff -aur a/lib/algorithms/ciphers.c b/lib/algorithms/ciphers.c
--- a/lib/algorithms/ciphers.c	2011-08-15 10:02:40.765216858 +0200
+++ b/lib/algorithms/ciphers.c	2011-08-15 10:09:02.806021282 +0200
@@ -52,6 +52,7 @@
   {"AES-192-CBC", GNUTLS_CIPHER_AES_192_CBC, 16, 24, CIPHER_BLOCK, 16, 0, 0},
   {"AES-128-CBC", GNUTLS_CIPHER_AES_128_CBC, 16, 16, CIPHER_BLOCK, 16, 0, 0},
   {"AES-128-GCM", GNUTLS_CIPHER_AES_128_GCM, 16, 16, CIPHER_STREAM, AEAD_IMPLICIT_DATA_SIZE, 0, 1},
+  {"AES-256-GCM", GNUTLS_CIPHER_AES_256_GCM, 16, 32, CIPHER_STREAM, AEAD_IMPLICIT_DATA_SIZE, 0, 1},
   {"3DES-CBC", GNUTLS_CIPHER_3DES_CBC, 8, 24, CIPHER_BLOCK, 8, 0, 0},
   {"DES-CBC", GNUTLS_CIPHER_DES_CBC, 8, 8, CIPHER_BLOCK, 8, 0, 0},
   {"ARCFOUR-128", GNUTLS_CIPHER_ARCFOUR_128, 1, 16, CIPHER_STREAM, 0, 0, 0},