diff --git a/README.md b/README.md
index e1a6fb56..5c6758bf 100644
--- a/README.md
+++ b/README.md
@@ -92,8 +92,7 @@ All cmd programs are compiled for {`amd64`, `arm64`} ARCH and {`windows`, `linux
 1. Go library [go.etcd.io/bbolt](https://github.com/etcd-io/bbolt "bbolt") (used by `pkg/storage/database`)
 2. Go library [golang.org/x/crypto](https://golang.org/x/crypto "x/crypto") (used by `pkg/crypto/keybuilder`)
 3. Go library [gopkg.in/yaml.v2](https://gopkg.in/yaml.v2 "yaml.v2") (used by `pkg/encoding`)
-4. Go library [github.com/g8rswimmer/error-chain](https://github.com/g8rswimmer/error-chain "error-chain") (used by `pkg/utils`)
-5. Go library [github.com/cloudflare/circl](https://github.com/cloudflare/circl "circl") (used by `pkg/crypto/asymmetric`)
+4. Go library [github.com/cloudflare/circl](https://github.com/cloudflare/circl "circl") (used by `pkg/crypto/asymmetric`)
 
 ### Makefile
 
diff --git a/go.mod b/go.mod
index 10aea569..3b7f3475 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,6 @@ go 1.23
 
 require (
 	github.com/cloudflare/circl v1.5.0
-	github.com/g8rswimmer/error-chain v1.0.0
 	go.etcd.io/bbolt v1.3.5
 	golang.org/x/crypto v0.26.0
 	gopkg.in/yaml.v2 v2.4.0
diff --git a/go.sum b/go.sum
index bee90895..2078e613 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,5 @@
 github.com/cloudflare/circl v1.5.0 h1:hxIWksrX6XN5a1L2TI/h53AGPhNHoUBo+TD1ms9+pys=
 github.com/cloudflare/circl v1.5.0/go.mod h1:uddAzsPgqdMAYatqJ0lsjX1oECcQLIlRpzZh3pJrofs=
-github.com/g8rswimmer/error-chain v1.0.0 h1:WnwnunlvqtGPHVHmBfbmUyAgrtag8Y6nNpwLWmtSYOQ=
-github.com/g8rswimmer/error-chain v1.0.0/go.mod h1:XPJ/brUsL7yzc5VRlIxtf9GvoUqnOKVI9fg2MB5DWx8=
 go.etcd.io/bbolt v1.3.5 h1:XAzx9gjCb0Rxj7EoqcClPD1d5ZBxZJk0jbuoPHenBt0=
 go.etcd.io/bbolt v1.3.5/go.mod h1:G5EMThwa9y8QZGBClrRx5EY+Yw9kAhnjy3bSjsnlVTQ=
 golang.org/x/crypto v0.26.0 h1:RrRspgV4mU+YwB4FYnuBoKsUapNIL5cohGAmSH3azsw=
diff --git a/test/result/coverage.svg b/test/result/coverage.svg
index 4dd90fca..695c3987 100644
--- a/test/result/coverage.svg
+++ b/test/result/coverage.svg
@@ -7,7 +7,7 @@
 >
 
 <g>
-	<rect x="20.000000" y="20.000000" width="988.000000" height="600.000000" style="fill: rgb(3, 112, 59);opacity:1;fill-opacity:1.00;stroke:rgb(128,128,128);stroke-width:1px;stroke-opacity:1.00;" />
+	<rect x="20.000000" y="20.000000" width="988.000000" height="600.000000" style="fill: rgb(2, 111, 59);opacity:1;fill-opacity:1.00;stroke:rgb(128,128,128);stroke-width:1px;stroke-opacity:1.00;" />
 	
 <text 
 	data-notex="1" 
@@ -20,7 +20,7 @@
 
 
 <g>
-	<rect x="28.000000" y="41.600000" width="960.553459" height="570.400000" style="fill: rgb(3, 112, 59);opacity:1;fill-opacity:1.00;stroke:rgb(128,128,128);stroke-width:1px;stroke-opacity:1.00;" />
+	<rect x="28.000000" y="41.600000" width="960.553459" height="570.400000" style="fill: rgb(2, 112, 59);opacity:1;fill-opacity:1.00;stroke:rgb(128,128,128);stroke-width:1px;stroke-opacity:1.00;" />
 	
 <text 
 	data-notex="1" 
@@ -91,7 +91,7 @@
 
 
 <g>
-	<rect x="36.000000" y="63.200000" width="537.553345" height="540.800000" style="fill: rgb(3, 113, 60);opacity:1;fill-opacity:1.00;stroke:rgb(128,128,128);stroke-width:1px;stroke-opacity:1.00;" />
+	<rect x="36.000000" y="63.200000" width="537.553345" height="540.800000" style="fill: rgb(3, 112, 59);opacity:1;fill-opacity:1.00;stroke:rgb(128,128,128);stroke-width:1px;stroke-opacity:1.00;" />
 	
 <text 
 	data-notex="1" 
@@ -310,7 +310,7 @@
 
 
 <g>
-	<rect x="44.000000" y="84.800000" width="234.922090" height="511.200000" style="fill: rgb(3, 112, 59);opacity:1;fill-opacity:1.00;stroke:rgb(128,128,128);stroke-width:1px;stroke-opacity:1.00;" />
+	<rect x="44.000000" y="84.800000" width="234.922090" height="511.200000" style="fill: rgb(2, 110, 58);opacity:1;fill-opacity:1.00;stroke:rgb(128,128,128);stroke-width:1px;stroke-opacity:1.00;" />
 	
 <text 
 	data-notex="1" 
@@ -562,7 +562,7 @@
 
 
 <g>
-	<rect x="52.000000" y="106.400000" width="218.922090" height="259.670588" style="fill: rgb(1, 107, 56);opacity:1;fill-opacity:1.00;stroke:rgb(128,128,128);stroke-width:1px;stroke-opacity:1.00;" />
+	<rect x="52.000000" y="106.400000" width="218.922090" height="259.670588" style="fill: rgb(0, 104, 55);opacity:1;fill-opacity:1.00;stroke:rgb(128,128,128);stroke-width:1px;stroke-opacity:1.00;" />
 	
 <text 
 	data-notex="1"