Update github workflows (#2)

* Update minimal go version

.github/workflows/go.yml

@@ -11,28 +11,28 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [ '1.14', '1.15', '1.16', '1.17' ]
+        go: [ '1.21', '1.22', '1.23' ]
     name: Test on Go ${{ matrix.go }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Go ${{ matrix.go }}
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go }}
       - run: go test ./...
 
   coverage:
-    name: Test on Go 1.18
+    name: Test on Go 1.23
     runs-on: ubuntu-latest
     steps:
 
-    - name: Set up Go 1.18
-      uses: actions/setup-go@v2
+    - name: Set up Go 1.23
+      uses: actions/setup-go@v5
       with:
-        go-version: ^1.18
+        go-version: ^1.23
 
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Install dependencies
       run: |
@@ -48,10 +48,10 @@ jobs:
       run: go test -v -covermode=count -coverprofile=coverage.out ./...
 
     - name: Convert coverage
-      uses: jandelgado/gcov2lcov-action@v1.0.5
+      uses: jandelgado/gcov2lcov-action@v1
 
     - name: Coveralls
-      uses: coverallsapp/github-action@v1.1.2
+      uses: coverallsapp/github-action@v2
       with:
         github-token: ${{ secrets.github_token }}
         path-to-lcov: coverage.lcov

.github/workflows/reviewdog.yml

@@ -6,17 +6,17 @@ on:
 
 jobs:
   lint:
-    name: Test on Go 1.18
+    name: Test on Go 1.23
     runs-on: ubuntu-latest
     steps:
 
-    - name: Set up Go 1.18
-      uses: actions/setup-go@v2
+    - name: Set up Go 1.23
+      uses: actions/setup-go@v5
       with:
-        go-version: ^1.18
+        go-version: ^1.23
 
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Install dependencies
       run: |

go.mod

@@ -1,3 +1,3 @@
 module github.com/lafriks/go-shamir
 
-go 1.14
+go 1.20

shamir.go

@@ -8,19 +8,19 @@
 // random polynomial equations of degree K-1 which have an X-intercept equal to
 // the secret. Given K=3, the following equations might be generated:
 //
-//     f1(x) =  78x^2 +  19x + 42
-//     f2(x) = 128x^2 + 171x + 42
-//     f3(x) = 121x^2 +   3x + 42
-//     f4(x) =  91x^2 +  95x + 42
-//     etc.
+//	f1(x) =  78x^2 +  19x + 42
+//	f2(x) = 128x^2 + 171x + 42
+//	f3(x) = 121x^2 +   3x + 42
+//	f4(x) =  91x^2 +  95x + 42
+//	etc.
 //
 // These polynomials are then evaluated for values of X > 0:
 //
-//     f1(1) =  139
-//     f2(2) =  896
-//     f3(3) = 1140
-//     f4(4) = 1783
-//     etc.
+//	f1(1) =  139
+//	f2(2) =  896
+//	f3(3) = 1140
+//	f4(4) = 1783
+//	etc.
 //
 // These (x, y) pairs are the shares given to the parties. In order to combine
 // shares to recover the secret, these (x, y) pairs are used as the input points