crypto: des - remove unused function

Remove the old DES3 verification functions that are no longer used.

Signed-off-by: Ard Biesheuvel <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

include/crypto/des.h

···
 #define DES3_EDE_EXPKEY_WORDS	(3 * DES_EXPKEY_WORDS)
 #define DES3_EDE_BLOCK_SIZE	DES_BLOCK_SIZE
 
-static inline int __des3_verify_key(u32 *flags, const u8 *key)
-{
-	int err = -EINVAL;
-	u32 K[6];
-
-	memcpy(K, key, DES3_EDE_KEY_SIZE);
-
-	if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
-		     !((K[2] ^ K[4]) | (K[3] ^ K[5]))) &&
-		     (fips_enabled ||
-		      (*flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)))
-		goto bad;
-
-	if (unlikely(!((K[0] ^ K[4]) | (K[1] ^ K[5]))) && fips_enabled)
-		goto bad;
-
-	err = 0;
-
-out:
-	memzero_explicit(K, DES3_EDE_KEY_SIZE);
-
-	return err;
-
-bad:
-	*flags |= CRYPTO_TFM_RES_WEAK_KEY;
-	goto out;
-}
-
-static inline int des3_verify_key(struct crypto_skcipher *tfm, const u8 *key)
-{
-	u32 flags;
-	int err;
-
-	flags = crypto_skcipher_get_flags(tfm);
-	err = __des3_verify_key(&flags, key);
-	crypto_skcipher_set_flags(tfm, flags);
-	return err;
-}
-
-extern unsigned long des_ekey(u32 *pe, const u8 *k);
-
 extern int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,
 			     unsigned int keylen);