webrtc_srtp/
protection_profile.rs

1/// ProtectionProfile specifies Cipher and AuthTag details, similar to TLS cipher suite
2#[derive(Default, Debug, Clone, Copy)]
3#[repr(u8)]
4pub enum ProtectionProfile {
5    #[default]
6    Aes128CmHmacSha1_80 = 0x0001,
7    Aes128CmHmacSha1_32 = 0x0002,
8    AeadAes128Gcm = 0x0007,
9    AeadAes256Gcm = 0x0008,
10}
11
12impl ProtectionProfile {
13    pub fn key_len(&self) -> usize {
14        match *self {
15            ProtectionProfile::Aes128CmHmacSha1_32
16            | ProtectionProfile::Aes128CmHmacSha1_80
17            | ProtectionProfile::AeadAes128Gcm => 16,
18            ProtectionProfile::AeadAes256Gcm => 32,
19        }
20    }
21
22    pub fn salt_len(&self) -> usize {
23        match *self {
24            ProtectionProfile::Aes128CmHmacSha1_32 | ProtectionProfile::Aes128CmHmacSha1_80 => 14,
25            ProtectionProfile::AeadAes128Gcm | ProtectionProfile::AeadAes256Gcm => 12,
26        }
27    }
28
29    pub fn rtp_auth_tag_len(&self) -> usize {
30        match *self {
31            ProtectionProfile::Aes128CmHmacSha1_80 => 10,
32            ProtectionProfile::Aes128CmHmacSha1_32 => 4,
33            ProtectionProfile::AeadAes128Gcm | ProtectionProfile::AeadAes256Gcm => 0,
34        }
35    }
36
37    pub fn rtcp_auth_tag_len(&self) -> usize {
38        match *self {
39            ProtectionProfile::Aes128CmHmacSha1_80 | ProtectionProfile::Aes128CmHmacSha1_32 => 10,
40            ProtectionProfile::AeadAes128Gcm | ProtectionProfile::AeadAes256Gcm => 0,
41        }
42    }
43
44    pub fn aead_auth_tag_len(&self) -> usize {
45        match *self {
46            ProtectionProfile::Aes128CmHmacSha1_80 | ProtectionProfile::Aes128CmHmacSha1_32 => 0,
47            ProtectionProfile::AeadAes128Gcm | ProtectionProfile::AeadAes256Gcm => 16,
48        }
49    }
50
51    pub fn auth_key_len(&self) -> usize {
52        match *self {
53            ProtectionProfile::Aes128CmHmacSha1_80 | ProtectionProfile::Aes128CmHmacSha1_32 => 20,
54            ProtectionProfile::AeadAes128Gcm | ProtectionProfile::AeadAes256Gcm => 0,
55        }
56    }
57}
webrtc_srtp/protection_profile.rs

webrtc_srtp/
protection_profile.rs
