Using Triton provider with Terraform Cloud

What is the secret sauce to getting the Triton provider to work with Terraform Cloud. I need to provide the private ssh key for authentication and I’m trying to put the contents of that into a variable to hand off to key_material but I get this error when doing so:

Error: Error Creating SSH Private Key Signer: unable to parse private key: asn1: structure error: tags don't match (16 vs {class:1 tag:15 length:112 isCompound:true}) {optional:false explicit:false application:false private:false defaultValue:<nil> tag:<nil> stringType:0 timeType:0 set:false omitEmpty:false} pkcs1PrivateKey @2

I’m not sure how to best pass the private key to Terraform Cloud.

Thanks!

-brian