函数 Decapsulate [SWS_CRYPT_21412] Upstream: RS_CRYPTO_02102, RS_CRYPTO_02108, RS_CRYPTO_02115
virtual ara::core::Result< SymmetricKey::Sptr > Decapsulate (ReadOnly MemRegion encapsulatedKey, AlgId algId, AllowedUsageFlags allowed Usage) const noexcept=0;
Decapsulate the keying data into a new SymmetricKey.
使用
类 ara::crypto::cryp::KeyDecapsulatorPrivateCtx 的方法 Decapsulate 用于将密钥数据同步解封装到新的对称密钥对象中 [SWS_CRYPT_21412]。它接收包含封装密钥的内存区域(encapsulatedKey)、目标算法标识(algId)以及确定目标密钥允许转换类型的使用标志(allowedUsage)[SWS_CRYPT_21412]。该调用被指定为 noexcept 和 exception safe,并在 ara::core::Result<SymmetricKey::Sptr> 中同步返回结果 [SWS_CRYPT_21412]。
错误处理
出错时,该函数保证回滚语义 [SWS_CRYPT_21412]。可能的错误原因包括:
UninitializedContext:上下文尚未用私钥初始化 [SWS_CRYPT_21412]。CryptoErrc::kInvalidArgument:输入缓冲区encapsulatedKey的格式无效 [SWS_CRYPT_21412]。ara::crypto::CryptoErrc::kUnknownIdentifier:传入的标识符algId不受支持 [SWS_CRYPT_21412]。ara::crypto::CryptoErrc::kIncompatibleArguments:allowedUsage中的标志与algId或密钥类型不兼容,或者algId与encapsulatedKey不匹配 [SWS_CRYPT_21412]。ara::crypto::CryptoErrc::kUsageViolation:私钥的权限不允许kAllowKeyUnwrapping[SWS_CRYPT_21412]。ara::crypto::CryptoErrc::kBusyResource或ara::crypto::CryptoErrc::kEmptyKeySlot:所需资源被占用,或配置的 KeySlot 当前为空 [SWS_CRYPT_21412]。
并发性与限制
该操作为 thread-safe 并声明为 const [SWS_CRYPT_21412]。Interpretation:ara::crypto::CryptoErrc::kEmptyKeySlot 的出现可能要求为解封装配置的 KeySlot 在调用前必须已被有效密钥材料占用。 问题 Q-941ed6a81c1e714c (未决)
本使用说明系自动生成,完全基于 AUTOSAR Adaptive R25-11 的规范数据。
| Header-Datei | #include "ara/crypto/cryp/key_decapsulator_private_ctx.h" |
|---|---|
| Scope | class ara::crypto::cryp::KeyDecapsulatorPrivateCtx |
| Exception-Sicherheit | exception safe |
| Thread-Sicherheit | thread-safe CryptoErrc::k rollback_semantics |
Parameter (in)
| Parameter | Beschreibung |
|---|---|
| encapsulatedKey | an input buffer containing the encapsulated key |
| algId | the identifier of the target symmetric crypto algorithm |
| allowedUsage | the flags that define a list of allowed transformations’ types in which the target key can be used |
Rückgabewert
| Typ | Beschreibung |
|---|---|
| ara::core::Result<SymmetricKey::Sptr > | a result containing a the decapsulated symmetric key object or an error |
Fehler
| Fehlercode | Beschreibung |
|---|---|
| UninitializedContext | if the context was not initialized by a private key value |
| CryptoErrc::kInvalidArgument | rollback_semantics if the format of encapsulatedKey is invalid |
| ara::crypto::CryptoErrc::kUnknownIdentifier | rollback_semantics if algId has an unsupported value |
| ara::crypto::CryptoErrc::kIncompatibleArguments | rollback_semantics if the allowedUsage is incompatible with the algId or the key type |
| ara::crypto::CryptoErrc::kIncompatibleArguments | rollback_semantics if the algId is incompatible to the encapsulatedKey |
| ara::crypto::CryptoErrc::kBusyResource | rollback_semantics a required resource is busy |
| ara::crypto::CryptoErrc::kEmptyKeySlot | rollback_semantics if a KeySlot was configured that is currently is empty |
| ara::crypto::CryptoErrc::kUsageViolation | rollback_semantics if the allowed usage of the key does not include kAllowKey Unwrapping |
Request a governed re-review of this record. The record is not changed immediately.
- Record
AUTOSAR/AP/record/SWS_CRYPT_21412- Status
- valid/unmigrated
- Version
AUTOSAR/AP/record/SWS_CRYPT_21412@rel:R25-11#67acb6a3- Content hash
67acb6a3- Source
- https://www.autosar.org/fileadmin/standards/R25-11/AP/AUTOSAR_AP_SWS_Cryptography.pdf#nameddest=SWS_CRYPT_21412
Status: valid/unmigrated
Version: rel:R25-11#eae42d09
Versionshistorie & Revisions (1 transition, 8 revision)
- Current State
valid/unmigrated- Reason
- mechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record
- Campaign
2026-08-13-status-backfill- Active Version
AUTOSAR/AP/record/SWS_CRYPT_21412@rel:R25-11#eae42d09
Recorded Revisions (8):
- R25-11
rel:R25-11#adc903502026-09-30 - R19-11
rel:R19-11#2a160e442026-10-14 - R20-11
rel:R20-11#b88e4d222026-10-14 - R21-11
rel:R21-11#5336aaad2026-10-14 - R22-11
rel:R22-11#e33519842026-10-14 - R23-11
rel:R23-11#fae6d8942026-10-14 - R24-11
rel:R24-11#807767cc2026-10-14 - R25-11
rel:R25-11#eae42d092026-10-14 active
Requirement Text as-of this release:
Curation Decisions:
Reachable Artifacts & Dependents:
| Date | Actor | Transition | Reason / Rationale | Campaign |
|---|---|---|---|---|
| 2026-08-13 | tool | none → valid/unmigrated | mechanically backfilled by migriere_status_backfill.py -- no per-field curation history exists yet for this record | 2026-08-13-status-backfill |
gemini-3.8-flash-low· 2026-10-13 · 德文原文