crypto: ansi_cprng - Remove unused ansi_cprng algorithm

Remove ansi_cprng, since it's obsolete and unused, as confirmed at
https://lore.kernel.org/r/aQxpnckYMgAAOLpZ@gondor.apana.org.au/

This was originally added in 2008, apparently as a FIPS approved random
number generator.  Whether this has ever belonged upstream is
questionable.  Either way, ansi_cprng is no longer usable for this
purpose, since it's been superseded by the more modern algorithms in
crypto/drbg.c, and FIPS itself no longer allows it.  (NIST SP 800-131A
Rev 1 (2015) says that RNGs based on ANSI X9.31 will be disallowed after
2015.  NIST SP 800-131A Rev 2 (2019) confirms they are now disallowed.)

Therefore, there is no reason to keep it around.

Suggested-by: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Haotian Zhang <vulab@iscas.ac.cn>
Cc: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 0 insertions, 106 deletions

diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index 268231227282..7a69185b86e8 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -119,18 +119,6 @@ struct aead_testvec {
 	int crypt_error;
 };
 
-struct cprng_testvec {
-	const char *key;
-	const char *dt;
-	const char *v;
-	const char *result;
-	unsigned char klen;
-	unsigned short dtlen;
-	unsigned short vlen;
-	unsigned short rlen;
-	unsigned short loops;
-};
-
 struct drbg_testvec {
 	const unsigned char *entropy;
 	size_t entropylen;
@@ -22377,100 +22365,6 @@ static const struct aead_testvec aegis128_tv_template[] = {
 };
 
 /*
- * ANSI X9.31 Continuous Pseudo-Random Number Generator (AES mode)
- * test vectors, taken from Appendix B.2.9 and B.2.10:
- *     http://csrc.nist.gov/groups/STM/cavp/documents/rng/RNGVS.pdf
- * Only AES-128 is supported at this time.
- */
-static const struct cprng_testvec ansi_cprng_aes_tv_template[] = {
-	{
-		.key	= "\xf3\xb1\x66\x6d\x13\x60\x72\x42"
-			  "\xed\x06\x1c\xab\xb8\xd4\x62\x02",
-		.klen	= 16,
-		.dt	= "\xe6\xb3\xbe\x78\x2a\x23\xfa\x62"
-			  "\xd7\x1d\x4a\xfb\xb0\xe9\x22\xf9",
-		.dtlen	= 16,
-		.v	= "\x80\x00\x00\x00\x00\x00\x00\x00"
-			  "\x00\x00\x00\x00\x00\x00\x00\x00",
-		.vlen	= 16,
-		.result	= "\x59\x53\x1e\xd1\x3b\xb0\xc0\x55"
-			  "\x84\x79\x66\x85\xc1\x2f\x76\x41",
-		.rlen	= 16,
-		.loops	= 1,
-	}, {
-		.key	= "\xf3\xb1\x66\x6d\x13\x60\x72\x42"
-			  "\xed\x06\x1c\xab\xb8\xd4\x62\x02",
-		.klen	= 16,
-		.dt	= "\xe6\xb3\xbe\x78\x2a\x23\xfa\x62"
-			  "\xd7\x1d\x4a\xfb\xb0\xe9\x22\xfa",
-		.dtlen	= 16,
-		.v	= "\xc0\x00\x00\x00\x00\x00\x00\x00"
-			  "\x00\x00\x00\x00\x00\x00\x00\x00",
-		.vlen	= 16,
-		.result	= "\x7c\x22\x2c\xf4\xca\x8f\xa2\x4c"
-			  "\x1c\x9c\xb6\x41\xa9\xf3\x22\x0d",
-		.rlen	= 16,
-		.loops	= 1,
-	}, {
-		.key	= "\xf3\xb1\x66\x6d\x13\x60\x72\x42"
-			  "\xed\x06\x1c\xab\xb8\xd4\x62\x02",
-		.klen	= 16,
-		.dt	= "\xe6\xb3\xbe\x78\x2a\x23\xfa\x62"
-			  "\xd7\x1d\x4a\xfb\xb0\xe9\x22\xfb",
-		.dtlen	= 16,
-		.v	= "\xe0\x00\x00\x00\x00\x00\x00\x00"
-			  "\x00\x00\x00\x00\x00\x00\x00\x00",
-		.vlen	= 16,
-		.result	= "\x8a\xaa\x00\x39\x66\x67\x5b\xe5"
-			  "\x29\x14\x28\x81\xa9\x4d\x4e\xc7",
-		.rlen	= 16,
-		.loops	= 1,
-	}, {
-		.key	= "\xf3\xb1\x66\x6d\x13\x60\x72\x42"
-			  "\xed\x06\x1c\xab\xb8\xd4\x62\x02",
-		.klen	= 16,
-		.dt	= "\xe6\xb3\xbe\x78\x2a\x23\xfa\x62"
-			  "\xd7\x1d\x4a\xfb\xb0\xe9\x22\xfc",
-		.dtlen	= 16,
-		.v	= "\xf0\x00\x00\x00\x00\x00\x00\x00"
-			  "\x00\x00\x00\x00\x00\x00\x00\x00",
-		.vlen	= 16,
-		.result	= "\x88\xdd\xa4\x56\x30\x24\x23\xe5"
-			  "\xf6\x9d\xa5\x7e\x7b\x95\xc7\x3a",
-		.rlen	= 16,
-		.loops	= 1,
-	}, {
-		.key	= "\xf3\xb1\x66\x6d\x13\x60\x72\x42"
-			  "\xed\x06\x1c\xab\xb8\xd4\x62\x02",
-		.klen	= 16,
-		.dt	= "\xe6\xb3\xbe\x78\x2a\x23\xfa\x62"
-			  "\xd7\x1d\x4a\xfb\xb0\xe9\x22\xfd",
-		.dtlen	= 16,
-		.v	= "\xf8\x00\x00\x00\x00\x00\x00\x00"
-			  "\x00\x00\x00\x00\x00\x00\x00\x00",
-		.vlen	= 16,
-		.result	= "\x05\x25\x92\x46\x61\x79\xd2\xcb"
-			  "\x78\xc4\x0b\x14\x0a\x5a\x9a\xc8",
-		.rlen	= 16,
-		.loops	= 1,
-	}, {	/* Monte Carlo Test */
-		.key	= "\x9f\x5b\x51\x20\x0b\xf3\x34\xb5"
-			  "\xd8\x2b\xe8\xc3\x72\x55\xc8\x48",
-		.klen	= 16,
-		.dt	= "\x63\x76\xbb\xe5\x29\x02\xba\x3b"
-			  "\x67\xc9\x25\xfa\x70\x1f\x11\xac",
-		.dtlen	= 16,
-		.v	= "\x57\x2c\x8e\x76\x87\x26\x47\x97"
-			  "\x7e\x74\xfb\xdd\xc4\x95\x01\xd1",
-		.vlen	= 16,
-		.result	= "\x48\xe9\xbd\x0d\x06\xee\x18\xfb"
-			  "\xe4\x57\x90\xd5\xc3\xfc\x9b\x73",
-		.rlen	= 16,
-		.loops	= 10000,
-	},
-};
-
-/*
  * SP800-90A DRBG Test vectors from
  * http://csrc.nist.gov/groups/STM/cavp/documents/drbg/drbgtestvectors.zip
  *