Wireshark's RSA private key method cannot decrypt TLS when the cipher suite uses (EC)DHE, when the protocol is TLS 1.3, when the key does not match the server certificate, or when the session was resumed without a ClientKeyExchange.
Checked 2026-09-24
- Vendor
- Wireshark Foundation
- Product
- Wireshark
- Subsystem
- TLS decryption
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- TLS - Wireshark Wiki — Wireshark Foundation · tier 2 current vendor documentation · TLS wiki, RSA keys section, list of conditions
Cite this note
APA
WarmTransfer. (2026, September 24). SIP capture and analysis with Wireshark and sngrep and HOMER: source note sip-capture-analysis-tls-rsa-limits. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-capture-analysis-tls-rsa-limits
BibTeX
@misc{warmtransfer-claim-sip-capture-analysis-tls-rsa-limits,
title = {SIP capture and analysis with Wireshark and sngrep and HOMER: source note sip-capture-analysis-tls-rsa-limits},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-capture-analysis-tls-rsa-limits},
note = {Source note sip-capture-analysis-tls-rsa-limits, checked 2026-09-24}
}