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ABNF for SIP Headers

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SIP Header — Security-Client

RFC 3329Section 2.2

security-client =
"Security‑Client"  HCOLONsec‑mechanism  *( COMMAsec‑mechanism )
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sec-mechanism =
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mechanism-name =
(
"digest" /  "tls" /  "ipsec‑ike" /  "ipsec‑man" /  ; see  Section 2.2
"ipsec-3gpp" /  ; see  Appendix A
sdes‑srtp‑name /  msrp‑tls‑name /  bfcp‑tls‑name /  udptl‑dtls‑name / 
; see  3GPP TS 24.229Section 7.2A.7
token
 )
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sdes-srtp-name =
"sdes‑srtp"
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msrp-tls-name =
"msrp‑tls"
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bfcp-tls-name =
"bfcp‑tls"
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udptl-dtls-name =
"udptl‑dtls"
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mech-parameters =
(
preference /  digest‑algorithm /  digest‑qop /  digest‑verify /  ; see  Section 2.2
algorithm /  protocol /  mode /  encrypt‑algorithm /  spi /  port1 /  port2 /  ; see  Appendix A
spi‑c /  spi‑s /  port‑c /  port‑s /  ; see  3GPP TS 33.203Annex H
mediasec‑param /  ; see  3GPP TS 24.229Section 7.2A.7
extension
 )
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preference =
"q"  EQUALqvalue
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digest-algorithm =
"d-alg"  EQUALtoken
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digest-qop =
"d-qop"  EQUALtoken
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digest-verify =
"d-ver"  EQUALLDQUOT  32LHEXRDQUOT
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algorithm =
"alg"  EQUAL  ( "hmac‑md5‑96" /  "hmac‑sha‑1‑96" )
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protocol =
"prot"  EQUAL  ( "ah" /  "esp" )
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mode =
"mod"  EQUAL  (
"trans" /  "tun" / 
"UDP-enc-tun"  ; see  3GPP TS 33.203Annex H
 )
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encrypt-algorithm =
"ealg"  EQUAL  (
"des‑ede3‑cbc" /  "null" / 
"aes‑cbc"  ; see  3GPP TS 33.203Annex H
 )
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spi =
"spi"  EQUALspivalue
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spi-c =
"spi‑c"  EQUALspivalue
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spi-s =
"spi‑s"  EQUALspivalue
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spivalue =
10DIGIT
; 0 to 4294967295
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port1 =
"port1"  EQUALport
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port2 =
"port2"  EQUALport
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port-c =
"port‑c"  EQUALport
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port-s =
"port‑s"  EQUALport
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port =
1*DIGIT
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mediasec-param =
"mediasec"
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extension =
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