crypto/krb5: Implement crypto self-testing

Implement self-testing infrastructure to test the pseudo-random function,
key derivation, encryption and checksumming.

Add the testing data from rfc8009 to test AES + HMAC-SHA2.

Add the testing data from rfc6803 to test Camellia.  Note some encryption
test vectors here are incomplete, lacking the key usage number needed to
derive Ke and Ki, and there are errata for this:

	https://www.rfc-editor.org/errata_search.php?rfc=6803

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Chuck Lever <chuck.lever@oracle.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Simon Horman <horms@kernel.org>
cc: linux-afs@lists.infradead.org
cc: linux-nfs@vger.kernel.org
cc: linux-crypto@vger.kernel.org
cc: netdev@vger.kernel.org

1 files changed, 48 insertions, 0 deletions

diff --git a/crypto/krb5/internal.h b/crypto/krb5/internal.h
index 8679140ef90d..a59084ffafe8 100644
--- a/crypto/krb5/internal.h
+++ b/crypto/krb5/internal.h
@@ -115,6 +115,37 @@ struct krb5_crypto_profile {
 #define round16(x) (((x) + 15) & ~15)
 
 /*
+ * Self-testing data.
+ */
+struct krb5_prf_test {
+	u32 etype;
+	const char *name, *key, *octet, *prf;
+};
+
+struct krb5_key_test_one {
+	u32 use;
+	const char *key;
+};
+
+struct krb5_key_test {
+	u32 etype;
+	const char *name, *key;
+	struct krb5_key_test_one Kc, Ke, Ki;
+};
+
+struct krb5_enc_test {
+	u32 etype;
+	u32 usage;
+	const char *name, *plain, *conf, *K0, *Ke, *Ki, *ct;
+};
+
+struct krb5_mic_test {
+	u32 etype;
+	u32 usage;
+	const char *name, *plain, *K0, *Kc, *mic;
+};
+
+/*
  * krb5_api.c
  */
 struct crypto_aead *krb5_prepare_encryption(const struct krb5_enctype *krb5,
@@ -197,3 +228,20 @@ extern const struct krb5_enctype krb5_camellia256_cts_cmac;
  */
 extern const struct krb5_enctype krb5_aes128_cts_hmac_sha256_128;
 extern const struct krb5_enctype krb5_aes256_cts_hmac_sha384_192;
+
+/*
+ * selftest.c
+ */
+#ifdef CONFIG_CRYPTO_KRB5_SELFTESTS
+int krb5_selftest(void);
+#else
+static inline int krb5_selftest(void) { return 0; }
+#endif
+
+/*
+ * selftest_data.c
+ */
+extern const struct krb5_prf_test krb5_prf_tests[];
+extern const struct krb5_key_test krb5_key_tests[];
+extern const struct krb5_enc_test krb5_enc_tests[];
+extern const struct krb5_mic_test krb5_mic_tests[];