Commit e5c85846 authored by Dr. David Alan Gilbert's avatar Dr. David Alan Gilbert Committed by Chuck Lever
Browse files

SUNRPC: Remove unused krb5_decrypt 



The last use of krb5_decrypt() was removed in 2023 by
commit 2a9893f7 ("SUNRPC:
Remove net/sunrpc/auth_gss/gss_krb5_seqnum.c")

Remove it.

Signed-off-by: default avatarDr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
parent 9a28ac17

net/sunrpc/auth_gss/gss_krb5_crypto.c

+0 −54
Original line number Diff line number Diff line
@@ -138,60 +138,6 @@ krb5_encrypt( 
	return ret;

}



/**

 * krb5_decrypt - simple decryption of an RPCSEC GSS payload

 * @tfm: initialized cipher transform

 * @iv: pointer to an IV

 * @in: ciphertext to decrypt

 * @out: OUT: plaintext

 * @length: length of input and output buffers, in bytes

 *

 * @iv may be NULL to force the use of an all-zero IV.

 * The buffer containing the IV must be as large as the

 * cipher's ivsize.

 *

 * Return values:

 *   %0: @in successfully decrypted into @out

 *   negative errno: @in not decrypted

 */

u32

krb5_decrypt(

     struct crypto_sync_skcipher *tfm,

     void * iv,

     void * in,

     void * out,

     int length)

{

	u32 ret = -EINVAL;

	struct scatterlist sg[1];

	u8 local_iv[GSS_KRB5_MAX_BLOCKSIZE] = {0};

	SYNC_SKCIPHER_REQUEST_ON_STACK(req, tfm);



	if (length % crypto_sync_skcipher_blocksize(tfm) != 0)

		goto out;



	if (crypto_sync_skcipher_ivsize(tfm) > GSS_KRB5_MAX_BLOCKSIZE) {

		dprintk("RPC:       gss_k5decrypt: tfm iv size too large %d\n",

			crypto_sync_skcipher_ivsize(tfm));

		goto out;

	}

	if (iv)

		memcpy(local_iv, iv, crypto_sync_skcipher_ivsize(tfm));



	memcpy(out, in, length);

	sg_init_one(sg, out, length);



	skcipher_request_set_sync_tfm(req, tfm);

	skcipher_request_set_callback(req, 0, NULL, NULL);

	skcipher_request_set_crypt(req, sg, sg, length, local_iv);



	ret = crypto_skcipher_decrypt(req);

	skcipher_request_zero(req);

out:

	dprintk("RPC:       gss_k5decrypt returns %d\n",ret);

	return ret;

}



static int

checksummer(struct scatterlist *sg, void *data)

{

net/sunrpc/auth_gss/gss_krb5_internal.h

+0 −3
Original line number Diff line number Diff line
@@ -166,9 +166,6 @@ u32 gss_krb5_checksum(struct crypto_ahash *tfm, char *header, int hdrlen, 
u32 krb5_encrypt(struct crypto_sync_skcipher *key, void *iv, void *in,

		 void *out, int length);



u32 krb5_decrypt(struct crypto_sync_skcipher *key, void *iv, void *in,

		 void *out, int length);



int xdr_extend_head(struct xdr_buf *buf, unsigned int base,

		    unsigned int shiftlen);