From: "Dr. David Alan Gilbert" <linux@xxxxxxxxxxx>
The last use of krb5_decrypt() was removed in 2023 by
commit 2a9893f796a3 ("SUNRPC:
Remove net/sunrpc/auth_gss/gss_krb5_seqnum.c")
Remove it.
Signed-off-by: Dr. David Alan Gilbert <linux@xxxxxxxxxxx>
---
net/sunrpc/auth_gss/gss_krb5_crypto.c | 54 -------------------------
net/sunrpc/auth_gss/gss_krb5_internal.h | 3 --
2 files changed, 57 deletions(-)
diff --git a/net/sunrpc/auth_gss/gss_krb5_crypto.c b/net/sunrpc/auth_gss/gss_krb5_crypto.c
index 9a27201638e2..7e09b15c5538 100644
--- a/net/sunrpc/auth_gss/gss_krb5_crypto.c
+++ b/net/sunrpc/auth_gss/gss_krb5_crypto.c
@@ -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)
{
diff --git a/net/sunrpc/auth_gss/gss_krb5_internal.h b/net/sunrpc/auth_gss/gss_krb5_internal.h
index a47e9ec228a5..0bda0078d7d8 100644
--- a/net/sunrpc/auth_gss/gss_krb5_internal.h
+++ b/net/sunrpc/auth_gss/gss_krb5_internal.h
@@ -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);
--
2.47.1
