Struct optee_utee::crypto_op::OperationInfo

pub struct OperationInfo { /* private fields */ }

Represent the information about a crypto information.

Implementations

impl OperationInfo

pub fn from_raw(raw: TEE_OperationInfo) -> Self

Return the OperationInfo struct based on the raw struct TEE_OperationInfo.

The raw structure contains following fields:

1. algorithm: One of the algorithm of AlgorithmId.
2. mode: One of the mode of OperationMode.
3. maxKeySize: The maximum key sizes of different algorithms as defined in TransientObjectType.
4. operationClass: One of the constants from OperationConstant.
5. keySize: 5.1) For an operation that makes no use of keys, 0. 5.2) For an operation that uses a single key, the actual size of this key. 5.3) For an operation that uses multiple keys, 0. (The actual value of keySize can be obtained from OperationInfoMultiple).
6. requiredKeyUsage: 6.1) For an operation that makes no use of keys, 0. 6.2) For an operation that uses a single key, a bit vector that describes the necessary bits in the object usage for set_key functions to succeed without panicking. 6.3) For an operation that uses multiple keys, 0. (The actual value of requiredKeyUsage can be obtained from OperationInfoMultiple.
7. digestLength: For a Mac, AE, or Digest, describes the number of bytes in the digest or tag.
8. handleState: A bit vector describing the current state of the operation. Contains one or more of the HandleFlag.

pub fn key_size(&self) -> u32

Return the keySize field of the raw structure TEE_OperationInfo.

pub fn max_key_size(&self) -> u32

Return the maxDataSize field of the raw structure TEE_OperationInfo.