[CRYPTO] cts: Add CTS mode required for Kerberos AES support

Implement CTS wrapper for CBC mode required for support of AES
encryption support for Kerberos (rfc3962).

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 14 insertions, 2 deletions

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 30e75d49f35a..689482cd16c2 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -82,9 +82,8 @@ static char *check[] = {
         "des", "md5", "des3_ede", "rot13", "sha1", "sha224", "sha256",
         "blowfish", "twofish", "serpent", "sha384", "sha512", "md4", "aes",
         "cast6", "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
-        "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
         "khazad", "wp512", "wp384", "wp256", "tnepres", "xeta",  "fcrypt",
-        "camellia", "seed", "salsa20", "lzo", NULL
+        "camellia", "seed", "salsa20", "lzo", "cts", NULL
 };
 
 static void hexdump(unsigned char *buf, unsigned int len)
@@ -1328,6 +1327,12 @@ static void do_test(void)
                 test_cipher("ecb(seed)", DECRYPT, seed_dec_tv_template,
                             SEED_DEC_TEST_VECTORS);
 
+                //CTS
+                test_cipher("cts(cbc(aes))", ENCRYPT, cts_mode_enc_tv_template,
+                            CTS_MODE_ENC_TEST_VECTORS);
+                test_cipher("cts(cbc(aes))", DECRYPT, cts_mode_dec_tv_template,
+                            CTS_MODE_DEC_TEST_VECTORS);
+
                 test_hash("sha384", sha384_tv_template, SHA384_TEST_VECTORS);
                 test_hash("sha512", sha512_tv_template, SHA512_TEST_VECTORS);
                 test_hash("wp512", wp512_tv_template, WP512_TEST_VECTORS);
@@ -1611,6 +1616,13 @@ static void do_test(void)
                           AES_CCM_DEC_TEST_VECTORS);
                 break;
 
+        case 38:
+                test_cipher("cts(cbc(aes))", ENCRYPT, cts_mode_enc_tv_template,
+                            CTS_MODE_ENC_TEST_VECTORS);
+                test_cipher("cts(cbc(aes))", DECRYPT, cts_mode_dec_tv_template,
+                            CTS_MODE_DEC_TEST_VECTORS);
+                break;
+
         case 100:
                 test_hash("hmac(md5)", hmac_md5_tv_template,
                           HMAC_MD5_TEST_VECTORS);