diff options
Diffstat (limited to 'firmware/lib21/packed_key.c')
-rw-r--r-- | firmware/lib21/packed_key.c | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/firmware/lib21/packed_key.c b/firmware/lib21/packed_key.c deleted file mode 100644 index bb6eb042..00000000 --- a/firmware/lib21/packed_key.c +++ /dev/null @@ -1,99 +0,0 @@ -/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * Key unpacking functions - */ - -#include "2common.h" -#include "2rsa.h" -#include "2sysincludes.h" -#include "vb21_common.h" - -vb2_error_t vb2_unpack_key_data(struct vb2_public_key *key, - const uint8_t *key_data, uint32_t key_size) -{ - const uint32_t *buf32 = (const uint32_t *)key_data; - uint32_t expected_key_size = vb2_packed_key_size(key->sig_alg); - - /* Make sure buffer is the correct length */ - if (!expected_key_size || expected_key_size != key_size) { - VB2_DEBUG("Wrong key size for algorithm\n"); - return VB2_ERROR_UNPACK_KEY_SIZE; - } - - /* Check for alignment */ - if (!vb2_aligned(buf32, sizeof(uint32_t))) - return VB2_ERROR_UNPACK_KEY_ALIGN; - - key->arrsize = buf32[0]; - - /* Sanity check key array size */ - if (key->arrsize * sizeof(uint32_t) != vb2_rsa_sig_size(key->sig_alg)) - return VB2_ERROR_UNPACK_KEY_ARRAY_SIZE; - - key->n0inv = buf32[1]; - - /* Arrays point inside the key data */ - key->n = buf32 + 2; - key->rr = buf32 + 2 + key->arrsize; - - return VB2_SUCCESS; -} - -vb2_error_t vb21_unpack_key(struct vb2_public_key *key, const uint8_t *buf, - uint32_t size) -{ - const struct vb21_packed_key *pkey = - (const struct vb21_packed_key *)buf; - uint32_t sig_size; - uint32_t min_offset = 0; - vb2_error_t rv; - - /* Check magic number */ - if (pkey->c.magic != VB21_MAGIC_PACKED_KEY) - return VB2_ERROR_UNPACK_KEY_MAGIC; - - rv = vb21_verify_common_header(buf, size); - if (rv) - return rv; - - /* Make sure key data is inside */ - rv = vb21_verify_common_member(pkey, &min_offset, - pkey->key_offset, pkey->key_size); - if (rv) - return rv; - - /* - * Check for compatible version. No need to check minor version, since - * that's compatible across readers matching the major version, and we - * haven't added any new fields. - */ - if (pkey->c.struct_version_major != VB21_PACKED_KEY_VERSION_MAJOR) - return VB2_ERROR_UNPACK_KEY_STRUCT_VERSION; - - /* Copy key algorithms */ - key->hash_alg = pkey->hash_alg; - if (!vb2_digest_size(key->hash_alg)) - return VB2_ERROR_UNPACK_KEY_HASH_ALGORITHM; - - key->sig_alg = pkey->sig_alg; - if (key->sig_alg != VB2_SIG_NONE) { - sig_size = vb2_rsa_sig_size(key->sig_alg); - if (!sig_size) - return VB2_ERROR_UNPACK_KEY_SIG_ALGORITHM; - rv = vb2_unpack_key_data( - key, - (const uint8_t *)pkey + pkey->key_offset, - pkey->key_size); - if (rv) - return rv; - } - - /* Key description */ - key->desc = vb21_common_desc(pkey); - key->version = pkey->key_version; - key->id = &pkey->id; - - return VB2_SUCCESS; -} |