SSL service "ssl:C"

Command Header Description
0x00010002
0x000200C2 CreateContext
0x00050082 AddTrustedRootCA
0x00110042
0x00150082 Read
0x00170082 Write

Going by strings in the SSL sysmodule it appears the sysmodule uses RSA BSAFE(like certain other 3DS software), this is also likely where the "ssl:C" name comes from(RSA BSAFE "SSL-C").