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SUNRPC: Remove unused krb5_decrypt

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The last use of krb5_decrypt() was removed in 2023 by
commit 2a9893f796 ("SUNRPC:
Remove net/sunrpc/auth_gss/gss_krb5_seqnum.c")

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Dr. David Alan Gilbert 2025-01-12 16:20:15 +00:00 committed by Chuck Lever
parent 9a28ac1762
commit e5c8584696
2 changed files with 0 additions and 57 deletions
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54
net/sunrpc/auth_gss/gss_krb5_crypto.c
View File

@ -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)
{

3
net/sunrpc/auth_gss/gss_krb5_internal.h
View File

@ -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);