RTCTransportStats: srtpCipher property
Baseline
2026
Newly available
Since July 2026, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The srtpCipher property of the RTCTransportStats dictionary indicates the descriptive name of the protection profile used for the Secure Real-time Transport Protocol (SRTP) transport.
Value
A string that indicates the descriptive name of the SRTP protection profile.
Values are defined in the "Profile" column of the IANA DTLS-SRTP protection profile registry and RFC 5764, section 4.1.2.
Examples
SRTP_AES128_CM_HMAC_SHA1_80
"SRTP_AES128_CM_HMAC_SHA1_80" is the descriptive name of the following profile, where maximum_lifetime is the maximum number of packets that can be protected by a single set of keys.
SRTP_AES128_CM_HMAC_SHA1_80 cipher: AES_128_CM cipher_key_length: 128 cipher_salt_length: 112 maximum_lifetime: 2^31 auth_function: HMAC-SHA1 auth_key_length: 160 auth_tag_length: 80
Specifications
| Specification |
|---|
| Identifiers for WebRTC's Statistics API # dom-rtctransportstats-srtpcipher |