Remove avalanchego dependency, update key reading/signing

go.mod

@@ -5,8 +5,8 @@ go 1.23.1
 require (
 	buf.build/gen/go/chain4travel/camino-messenger-protocol/grpc/go v1.5.1-20240902074016-adcea0949c54.1
 	buf.build/gen/go/chain4travel/camino-messenger-protocol/protocolbuffers/go v1.34.2-20240902074016-adcea0949c54.2
-	github.com/ava-labs/avalanchego v1.10.18
 	github.com/chain4travel/camino-messenger-contracts/go/contracts v0.0.0-20240918114804-fbc75cbe60fc
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0
 	github.com/ethereum/go-ethereum v1.14.8
 	github.com/google/uuid v1.6.0
 	github.com/klauspost/compress v1.17.3
@@ -26,6 +26,7 @@ require (
 )
 
 require (
+	github.com/DataDog/zstd v1.5.2 // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/bits-and-blooms/bitset v1.10.0 // indirect
 	github.com/btcsuite/btcd/btcec/v2 v2.3.4 // indirect
@@ -35,26 +36,26 @@ require (
 	github.com/crate-crypto/go-kzg-4844 v1.0.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/deckarep/golang-set/v2 v2.6.0 // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0 // indirect
 	github.com/ethereum/c-kzg-4844 v1.0.0 // indirect
+	github.com/gballet/go-libpcsclite v0.0.0-20191108122812-4678299bea08 // indirect
 	github.com/go-logr/logr v1.3.0 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
-	github.com/google/renameio/v2 v2.0.0 // indirect
 	github.com/gorilla/websocket v1.5.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.15.2 // indirect
 	github.com/holiman/uint256 v1.3.1 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mmcloughlin/addchain v0.4.0 // indirect
-	github.com/mr-tron/base58 v1.2.0 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/prometheus/client_golang v1.16.0 // indirect
 	github.com/rivo/uniseg v0.4.4 // indirect
+	github.com/rogpeppe/go-internal v1.10.0 // indirect
 	github.com/rs/zerolog v1.31.0 // indirect
 	github.com/shirou/gopsutil v3.21.11+incompatible // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/supranational/blst v0.3.11 // indirect
+	github.com/syndtr/goleveldb v1.0.1-0.20220614013038-64ee5596c38a // indirect
 	github.com/tidwall/gjson v1.17.0 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.0 // indirect
@@ -65,6 +66,7 @@ require (
 	go.mau.fi/util v0.3.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.11.2 // indirect
 	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
+	go.uber.org/goleak v1.2.1 // indirect
 	golang.org/x/crypto v0.24.0 // indirect
 	golang.org/x/text v0.16.0 // indirect
 	google.golang.org/genproto v0.0.0-20240123012728-ef4313101c80 // indirect