函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\keys\trusted-keys\trusted_tpm1.c Create Date:2022-07-27 20:05:00
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Have the TPM unseal(decrypt) the symmetric key

函数原型：static int key_unseal(struct trusted_key_payload *p, struct trusted_key_options *o)

返回类型：int

参数：

类型参数名称
struct trusted_key_payload *p
struct trusted_key_options *o
688  ret等于tpm_buf_init( & tb, 0, 0)
689  如果ret则返回:ret
692  ret等于se the AUTH2_COMMAND form of unseal, to authorize both key and blob
694  如果ret小于0则打印信息("trusted_key: srkunseal failed (%d)\n", ret)
696  否则migratable等于key[--key_len]
700  tpm_buf_destroy( & tb)
701  返回:ret
调用者
名称描述
trusted_instantiaterusted_instantiate - create a new trusted key* Unseal an existing trusted blob or, for a new key, get a* random key, then seal and create a trusted key-type key,* adding it to the specified keyring.* On success, return 0. Otherwise return errno.