[PATCH] crypto: tcrypt - remove mode=1000

From: Robert Elliott
Date: Mon Aug 15 2022 - 00:30:07 EST


The lists of algothms checked for existence by
modprobe tcrypt mode=1000
generates three bogus errors:
modprobe tcrypt mode=1000

console log:
tcrypt: alg rot13 not found
tcrypt: alg cts not found
tcrypt: alg arc4 not found

rot13 is not an algorithm in the crypto API or tested.

cts is a wrapper, not a base algorithm.

arc4 is named ecb(arc4), not arc4.

Also, the list is missing numerous algorithms that are tested by
other test modes:
blake2b-512
blake2s-256
crct10dif
xxhash64
ghash
cast5
sm4
ansi_prng

Several of the algorithms are only available if
CONFIG_CRYPTO_USER_API_ENABLE_OBSOLETE is enabled:
arc4
khazad
seed
tea, xtea, xeta

Rather that fix that list, remove test mode=1000 entirely.
It seems to have limited utility, and a web search shows no
discussion of anybody using it.

Suggested-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
Signed-off-by: Robert Elliott <elliott@xxxxxxx>
---
crypto/tcrypt.c | 28 ----------------------------
1 file changed, 28 deletions(-)

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 2bacf8384f59..35d70382ee54 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -65,18 +65,6 @@ static int mode;
static u32 num_mb = 8;
static unsigned int klen;
static char *tvmem[TVMEMSIZE];
-
-static const char *check[] = {
- "des", "md5", "des3_ede", "rot13", "sha1", "sha224", "sha256", "sm3",
- "blowfish", "twofish", "serpent", "sha384", "sha512", "md4", "aes",
- "cast6", "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
- "khazad", "wp512", "wp384", "wp256", "xeta", "fcrypt",
- "camellia", "seed", "rmd160",
- "lzo", "lzo-rle", "cts", "sha3-224", "sha3-256", "sha3-384",
- "sha3-512", "streebog256", "streebog512",
- NULL
-};
-
static const int block_sizes[] = { 16, 64, 128, 256, 1024, 1420, 4096, 0 };
static const int aead_sizes[] = { 16, 64, 256, 512, 1024, 1420, 4096, 8192, 0 };

@@ -1454,18 +1442,6 @@ static void test_cipher_speed(const char *algo, int enc, unsigned int secs,
false);
}

-static void test_available(void)
-{
- const char **name = check;
-
- while (*name) {
- printk("alg %s ", *name);
- printk(crypto_has_alg(*name, 0, 0) ?
- "found\n" : "not found\n");
- name++;
- }
-}
-
static inline int tcrypt_test(const char *alg)
{
int ret;
@@ -2825,10 +2801,6 @@ static int do_test(const char *alg, u32 type, u32 mask, int m, u32 num_mb)
test_mb_skcipher_speed("ctr(blowfish)", DECRYPT, sec, NULL, 0,
speed_template_8_32, num_mb);
break;
-
- case 1000:
- test_available();
- break;
}

return ret;
--
2.37.1