default or selected kernelversion does not have config value CONFIG_SCTP_HMAC_SHA1.
Result is shown for kernelversion 6.2.5

HMAC-SHA1

configname: CONFIG_SCTP_HMAC_SHA1

SCTP: Cookie HMAC Algorithm
└─>HMAC-SHA1
In linux kernel since version 2.6.12  
Enable the use of HMAC-SHA1 during association establishment. It
is advised to use either HMAC-MD5 or HMAC-SHA1.