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KeyBlockShape

rustls::crypto::cipher

结构体 KeyBlockShape 

Source 
pub struct KeyBlockShape {
    pub enc_key_len: usize,
    pub fixed_iv_len: usize,
    pub explicit_nonce_len: usize,
}
展开描述

How 一个 TLS1.2 key_block is partitioned.

注：当前不支持 mac_key_length 非零的密码包。

字段§

§enc_key_len: usize

How long keys are.

enc_key_length terminology is 从 标准 (RFC5246 A.6)。

§fixed_iv_len: usize

How long the fixed part of the ‘IV’ is.

fixed_iv_length terminology is 从 标准 (RFC5246 A.6)。

This isn’t usually an IV, but we continue the terminology misuse 到 match 标准.

§explicit_nonce_len: usize

This 是 non-标准 extension which extends the key block 到 provide an initial explicit nonce offset, in 一个 deterministic 并 safe way. GCM needs this, chacha20poly1305 works this way by design.

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