diff options
Diffstat (limited to 'cmd/tpm.c')
| -rw-r--r-- | cmd/tpm.c | 49 |
1 files changed, 49 insertions, 0 deletions
@@ -592,6 +592,45 @@ static int do_tpm_oiap(cmd_tbl_t *cmdtp, int flag, return report_return_code(err); } +#ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1 +static int do_tpm_load_key_by_sha1(cmd_tbl_t *cmdtp, int flag, int argc, char * + const argv[]) +{ + uint32_t parent_handle = 0; + uint32_t key_len, key_handle, err; + uint8_t usage_auth[DIGEST_LENGTH]; + uint8_t parent_hash[DIGEST_LENGTH]; + void *key; + + if (argc < 5) + return CMD_RET_USAGE; + + parse_byte_string(argv[1], parent_hash, NULL); + key = (void *)simple_strtoul(argv[2], NULL, 0); + key_len = simple_strtoul(argv[3], NULL, 0); + if (strlen(argv[4]) != 2 * DIGEST_LENGTH) + return CMD_RET_FAILURE; + parse_byte_string(argv[4], usage_auth, NULL); + + err = tpm_find_key_sha1(usage_auth, parent_hash, &parent_handle); + if (err) { + printf("Could not find matching parent key (err = %d)\n", err); + return CMD_RET_FAILURE; + } + + printf("Found parent key %08x\n", parent_handle); + + err = tpm_load_key2_oiap(parent_handle, key, key_len, usage_auth, + &key_handle); + if (!err) { + printf("Key handle is 0x%x\n", key_handle); + setenv_hex("key_handle", key_handle); + } + + return report_return_code(err); +} +#endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */ + static int do_tpm_load_key2_oiap(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { @@ -756,6 +795,10 @@ static cmd_tbl_t tpm_commands[] = { do_tpm_end_oiap, "", ""), U_BOOT_CMD_MKENT(load_key2_oiap, 0, 1, do_tpm_load_key2_oiap, "", ""), +#ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1 + U_BOOT_CMD_MKENT(load_key_by_sha1, 0, 1, + do_tpm_load_key_by_sha1, "", ""), +#endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */ U_BOOT_CMD_MKENT(get_pub_key_oiap, 0, 1, do_tpm_get_pub_key_oiap, "", ""), #endif /* CONFIG_TPM_AUTH_SESSIONS */ @@ -826,6 +869,12 @@ U_BOOT_CMD(tpm, CONFIG_SYS_MAXARGS, 1, do_tpm, " - loads a key data from memory address <key_addr>, <key_len> bytes\n" " into TPM using the parent key <parent_handle> with authorization\n" " <usage_auth> (20 bytes hex string).\n" +#ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1 +" load_key_by_sha1 parent_hash key_addr key_len usage_auth\n" +" - loads a key data from memory address <key_addr>, <key_len> bytes\n" +" into TPM using the parent hash <parent_hash> (20 bytes hex string)\n" +" with authorization <usage_auth> (20 bytes hex string).\n" +#endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */ " get_pub_key_oiap key_handle usage_auth\n" " - get the public key portion of a loaded key <key_handle> using\n" " authorization <usage auth> (20 bytes hex string)\n" |