KEYS: remove support for asym_tpm keys

[linux-2.6-microblaze.git] / crypto / asymmetric_keys / tpm_parser.c

diff --git a/crypto/asymmetric_keys/tpm_parser.c b/crypto/asymmetric_keys/tpm_parser.c
deleted file mode 100644 (file)
index 96405d8..0000000
--- a/crypto/asymmetric_keys/tpm_parser.c
+++ /dev/null
@@ -1,102 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#define pr_fmt(fmt) "TPM-PARSER: "fmt
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/export.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <keys/asymmetric-subtype.h>
-#include <keys/asymmetric-parser.h>
-#include <crypto/asym_tpm_subtype.h>
-#include "tpm.asn1.h"
-
-struct tpm_parse_context {
-       const void      *blob;
-       u32             blob_len;
-};
-
-/*
- * Note the key data of the ASN.1 blob.
- */
-int tpm_note_key(void *context, size_t hdrlen,
-                  unsigned char tag,
-                  const void *value, size_t vlen)
-{
-       struct tpm_parse_context *ctx = context;
-
-       ctx->blob = value;
-       ctx->blob_len = vlen;
-
-       return 0;
-}
-
-/*
- * Parse a TPM-encrypted private key blob.
- */
-static struct tpm_key *tpm_parse(const void *data, size_t datalen)
-{
-       struct tpm_parse_context ctx;
-       long ret;
-
-       memset(&ctx, 0, sizeof(ctx));
-
-       /* Attempt to decode the private key */
-       ret = asn1_ber_decoder(&tpm_decoder, &ctx, data, datalen);
-       if (ret < 0)
-               goto error;
-
-       return tpm_key_create(ctx.blob, ctx.blob_len);
-
-error:
-       return ERR_PTR(ret);
-}
-/*
- * Attempt to parse a data blob for a key as a TPM private key blob.
- */
-static int tpm_key_preparse(struct key_preparsed_payload *prep)
-{
-       struct tpm_key *tk;
-
-       /*
-        * TPM 1.2 keys are max 2048 bits long, so assume the blob is no
-        * more than 4x that
-        */
-       if (prep->datalen > 256 * 4)
-               return -EMSGSIZE;
-
-       tk = tpm_parse(prep->data, prep->datalen);
-
-       if (IS_ERR(tk))
-               return PTR_ERR(tk);
-
-       /* We're pinning the module by being linked against it */
-       __module_get(asym_tpm_subtype.owner);
-       prep->payload.data[asym_subtype] = &asym_tpm_subtype;
-       prep->payload.data[asym_key_ids] = NULL;
-       prep->payload.data[asym_crypto] = tk;
-       prep->payload.data[asym_auth] = NULL;
-       prep->quotalen = 100;
-       return 0;
-}
-
-static struct asymmetric_key_parser tpm_key_parser = {
-       .owner  = THIS_MODULE,
-       .name   = "tpm_parser",
-       .parse  = tpm_key_preparse,
-};
-
-static int __init tpm_key_init(void)
-{
-       return register_asymmetric_key_parser(&tpm_key_parser);
-}
-
-static void __exit tpm_key_exit(void)
-{
-       unregister_asymmetric_key_parser(&tpm_key_parser);
-}
-
-module_init(tpm_key_init);
-module_exit(tpm_key_exit);
-
-MODULE_DESCRIPTION("TPM private key-blob parser");
-MODULE_LICENSE("GPL v2");