rtc_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    Aes256CmHmacSha1_80 = 0x0003,
9    Aes256CmHmacSha1_32 = 0x0004,
10    AeadAes128Gcm = 0x0007,
11    AeadAes256Gcm = 0x0008,
12}
13
14impl ProtectionProfile {
15    pub fn key_len(&self) -> usize {
16        match *self {
17            ProtectionProfile::Aes128CmHmacSha1_32
18            | ProtectionProfile::Aes128CmHmacSha1_80
19            | ProtectionProfile::AeadAes128Gcm => 16,
20            ProtectionProfile::Aes256CmHmacSha1_32 | ProtectionProfile::Aes256CmHmacSha1_80 => 32,
21            ProtectionProfile::AeadAes256Gcm => 32,
22        }
23    }
24
25    pub fn salt_len(&self) -> usize {
26        match *self {
27            ProtectionProfile::Aes128CmHmacSha1_32
28            | ProtectionProfile::Aes128CmHmacSha1_80
29            | ProtectionProfile::Aes256CmHmacSha1_32
30            | ProtectionProfile::Aes256CmHmacSha1_80 => 14,
31            ProtectionProfile::AeadAes128Gcm | ProtectionProfile::AeadAes256Gcm => 12,
32        }
33    }
34
35    pub fn rtp_auth_tag_len(&self) -> usize {
36        match *self {
37            ProtectionProfile::Aes128CmHmacSha1_80 | ProtectionProfile::Aes256CmHmacSha1_80 => 10,
38            ProtectionProfile::Aes128CmHmacSha1_32 | ProtectionProfile::Aes256CmHmacSha1_32 => 4,
39            ProtectionProfile::AeadAes128Gcm | ProtectionProfile::AeadAes256Gcm => 0,
40        }
41    }
42
43    pub fn rtcp_auth_tag_len(&self) -> usize {
44        match *self {
45            ProtectionProfile::Aes128CmHmacSha1_80
46            | ProtectionProfile::Aes128CmHmacSha1_32
47            | ProtectionProfile::Aes256CmHmacSha1_80
48            | ProtectionProfile::Aes256CmHmacSha1_32 => 10,
49            ProtectionProfile::AeadAes128Gcm | ProtectionProfile::AeadAes256Gcm => 0,
50        }
51    }
52
53    pub fn aead_auth_tag_len(&self) -> usize {
54        match *self {
55            ProtectionProfile::Aes128CmHmacSha1_80
56            | ProtectionProfile::Aes128CmHmacSha1_32
57            | ProtectionProfile::Aes256CmHmacSha1_80
58            | ProtectionProfile::Aes256CmHmacSha1_32 => 0,
59            ProtectionProfile::AeadAes128Gcm | ProtectionProfile::AeadAes256Gcm => 16,
60        }
61    }
62
63    pub fn auth_key_len(&self) -> usize {
64        match *self {
65            ProtectionProfile::Aes128CmHmacSha1_80
66            | ProtectionProfile::Aes128CmHmacSha1_32
67            | ProtectionProfile::Aes256CmHmacSha1_80
68            | ProtectionProfile::Aes256CmHmacSha1_32 => 20,
69            ProtectionProfile::AeadAes128Gcm | ProtectionProfile::AeadAes256Gcm => 0,
70        }
71    }
72}
rtc_srtp/protection_profile.rs

rtc_srtp/
protection_profile.rs
