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EncryptionManagerFactory

Struct EncryptionManagerFactory 

Source
pub struct EncryptionManagerFactory;
Expand description

从一把主密钥构建 EncryptionManager。

EncryptionManagerFactory::from_master_key 注册五个默认算法 (aes-256-gcm、aes-256-cbc-hmac、sodium-xchacha20 与国密的 sm4-cbc、zuc-128),行为与 1.x 完全一致; EncryptionManagerFactory::from_master_key_all 再补上九个扩展算法(共 十四个);EncryptionManagerFactory::register_extensions 只把九个扩展 注册进已有注册表,便于自行组合。各方法的 default_identifier 必须已注册。

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impl EncryptionManagerFactory

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pub fn from_master_key( master_key: &[u8], default_identifier: &str, ) -> Result<EncryptionManager>

五个默认算法(与 1.x 行为一致,存量密文照旧解开)。

Source

pub fn from_master_key_all( master_key: &[u8], default_identifier: &str, ) -> Result<EncryptionManager>

全部十四个算法:五个默认算法 + 九个扩展算法。

与 Self::from_master_key 相比,五个默认算法的子密钥逐字节相同 (同一套冻结标签派生),扩展算法各用 HKDF 派生的独立子密钥。

use encryption::factory::EncryptionManagerFactory;

let manager =
    EncryptionManagerFactory::from_master_key_all(&[7u8; 32], "aes-256-gcm")?;
assert_eq!(manager.registry().identifiers().len(), 14);

let blob = manager.encrypt_with("threefish-512-cbc-hmac", b"data")?;
assert_eq!(
    manager.decrypt_with("threefish-512-cbc-hmac", &blob)?,
    b"data"
);
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pub fn register_extensions( registry: &mut Registry<Box<dyn SymmetricCipher>>, master_key: &[u8], ) -> Result<()>

把九个扩展算法注册进已有注册表,供自行组合(例如在 Self::from_master_key 的五个默认算法之上按需扩展,或与自研算法共存)。 主密钥必须为 32 字节,否则 Error::InvalidMasterKey。

use encryption::factory::EncryptionManagerFactory;

let mut manager = EncryptionManagerFactory::from_master_key(&[7u8; 32], "aes-256-gcm")?;
EncryptionManagerFactory::register_extensions(manager.registry_mut(), &[7u8; 32])?;
assert_eq!(manager.registry().identifiers().len(), 14);

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