[CRYPTO] salsa20: Salsa20 stream cipher

This patch implements the Salsa20 stream cipher using the blkcipher interface.

The core cipher code comes from Daniel Bernstein's submission to eSTREAM:
  http://www.ecrypt.eu.org/stream/svn/viewcvs.cgi/ecrypt/trunk/submissions/salsa20/full/ref/

The test vectors comes from:
  http://www.ecrypt.eu.org/stream/svn/viewcvs.cgi/ecrypt/trunk/submissions/salsa20/full/

It has been tested successfully with "modprobe tcrypt mode=34" on an
UML instance.

Signed-off-by: Tan Swee Heng <thesweeheng@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 7 insertions, 1 deletions

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 4d364ccacbb2..b8cb1d1420ae 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -80,7 +80,7 @@ static char *check[] = {
         "cast6", "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
         "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
         "khazad", "wp512", "wp384", "wp256", "tnepres", "xeta",  "fcrypt",
-        "camellia", "seed", NULL
+        "camellia", "seed", "salsa20", NULL
 };
 
 static void hexdump(unsigned char *buf, unsigned int len)
@@ -1309,6 +1309,12 @@ static void do_test(void)
                 test_hash("sha224", sha224_tv_template, SHA224_TEST_VECTORS);
                 break;
 
+        case 34:
+                test_cipher("salsa20", ENCRYPT,
+                            salsa20_stream_enc_tv_template,
+                            SALSA20_STREAM_ENC_TEST_VECTORS);
+                break;
+
         case 100:
                 test_hash("hmac(md5)", hmac_md5_tv_template,
                           HMAC_MD5_TEST_VECTORS);