From 6964629f4c188af3103a645a672877ee0e9bac91 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Thu, 29 Jun 2023 13:51:06 -0400 Subject: SUNRPC: Remove krb5_derive_key_v1() This function is no longer used. Reviewed-by: Jeff Layton Signed-off-by: Chuck Lever --- net/sunrpc/auth_gss/gss_krb5_internal.h | 6 --- net/sunrpc/auth_gss/gss_krb5_keys.c | 84 --------------------------------- 2 files changed, 90 deletions(-) (limited to 'net') diff --git a/net/sunrpc/auth_gss/gss_krb5_internal.h b/net/sunrpc/auth_gss/gss_krb5_internal.h index 3471a574997a..c1aea062c01b 100644 --- a/net/sunrpc/auth_gss/gss_krb5_internal.h +++ b/net/sunrpc/auth_gss/gss_krb5_internal.h @@ -104,12 +104,6 @@ u32 gss_krb5_unwrap_v2(struct krb5_ctx *kctx, int offset, int len, /* Key Derivation Functions */ -int krb5_derive_key_v1(const struct gss_krb5_enctype *gk5e, - const struct xdr_netobj *inkey, - struct xdr_netobj *outkey, - const struct xdr_netobj *label, - gfp_t gfp_mask); - int krb5_derive_key_v2(const struct gss_krb5_enctype *gk5e, const struct xdr_netobj *inkey, struct xdr_netobj *outkey, diff --git a/net/sunrpc/auth_gss/gss_krb5_keys.c b/net/sunrpc/auth_gss/gss_krb5_keys.c index 5347fe1cc93f..06d8ee0db000 100644 --- a/net/sunrpc/auth_gss/gss_krb5_keys.c +++ b/net/sunrpc/auth_gss/gss_krb5_keys.c @@ -222,90 +222,6 @@ err_return: return ret; } -#define smask(step) ((1<>step)&smask(step))) -#define parity_char(x) pstep(pstep(pstep((x), 4), 2), 1) - -static void mit_des_fixup_key_parity(u8 key[8]) -{ - int i; - for (i = 0; i < 8; i++) { - key[i] &= 0xfe; - key[i] |= 1^parity_char(key[i]); - } -} - -static int krb5_random_to_key_v1(const struct gss_krb5_enctype *gk5e, - struct xdr_netobj *randombits, - struct xdr_netobj *key) -{ - int i, ret = -EINVAL; - - if (key->len != 24) { - dprintk("%s: key->len is %d\n", __func__, key->len); - goto err_out; - } - if (randombits->len != 21) { - dprintk("%s: randombits->len is %d\n", - __func__, randombits->len); - goto err_out; - } - - /* take the seven bytes, move them around into the top 7 bits of the - 8 key bytes, then compute the parity bits. Do this three times. */ - - for (i = 0; i < 3; i++) { - memcpy(key->data + i*8, randombits->data + i*7, 7); - key->data[i*8+7] = (((key->data[i*8]&1)<<1) | - ((key->data[i*8+1]&1)<<2) | - ((key->data[i*8+2]&1)<<3) | - ((key->data[i*8+3]&1)<<4) | - ((key->data[i*8+4]&1)<<5) | - ((key->data[i*8+5]&1)<<6) | - ((key->data[i*8+6]&1)<<7)); - - mit_des_fixup_key_parity(key->data + i*8); - } - ret = 0; -err_out: - return ret; -} - -/** - * krb5_derive_key_v1 - Derive a subkey for an RFC 3961 enctype - * @gk5e: Kerberos 5 enctype profile - * @inkey: base protocol key - * @outkey: OUT: derived key - * @label: subkey usage label - * @gfp_mask: memory allocation control flags - * - * Caller sets @outkey->len to the desired length of the derived key. - * - * On success, returns 0 and fills in @outkey. A negative errno value - * is returned on failure. - */ -int krb5_derive_key_v1(const struct gss_krb5_enctype *gk5e, - const struct xdr_netobj *inkey, - struct xdr_netobj *outkey, - const struct xdr_netobj *label, - gfp_t gfp_mask) -{ - struct xdr_netobj inblock; - int ret; - - inblock.len = gk5e->keybytes; - inblock.data = kmalloc(inblock.len, gfp_mask); - if (!inblock.data) - return -ENOMEM; - - ret = krb5_DK(gk5e, inkey, inblock.data, label, gfp_mask); - if (!ret) - ret = krb5_random_to_key_v1(gk5e, &inblock, outkey); - - kfree_sensitive(inblock.data); - return ret; -} - /* * This is the identity function, with some sanity checking. */ -- cgit v1.2.3-58-ga151