feat: initial commit

.gitignore

@@ -0,0 +1,2 @@
+*.asc
+*.gpg

go.mod

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+module gogpg
+
+go 1.25.4
+
+require github.com/ProtonMail/gopenpgp/v3 v3.3.0
+
+require (
+	github.com/ProtonMail/go-crypto v1.3.0 // indirect
+	github.com/cloudflare/circl v1.6.0 // indirect
+	golang.org/x/crypto v0.33.0 // indirect
+	golang.org/x/sys v0.30.0 // indirect
+)

go.sum

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+github.com/ProtonMail/go-crypto v1.3.0 h1:ILq8+Sf5If5DCpHQp4PbZdS1J7HDFRXz/+xKBiRGFrw=
+github.com/ProtonMail/go-crypto v1.3.0/go.mod h1:9whxjD8Rbs29b4XWbB8irEcE8KHMqaR2e7GWU1R+/PE=
+github.com/ProtonMail/gopenpgp/v3 v3.3.0 h1:N6rHCH5PWwB6zSRMgRj1EbAMQHUAAHxH3Oo4KibsPwY=
+github.com/ProtonMail/gopenpgp/v3 v3.3.0/go.mod h1:J+iNPt0/5EO9wRt7Eit9dRUlzyu3hiGX3zId6iuaKOk=
+github.com/cloudflare/circl v1.6.0 h1:cr5JKic4HI+LkINy2lg3W2jF8sHCVTBncJr5gIIq7qk=
+github.com/cloudflare/circl v1.6.0/go.mod h1:uddAzsPgqdMAYatqJ0lsjX1oECcQLIlRpzZh3pJrofs=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+golang.org/x/crypto v0.33.0 h1:IOBPskki6Lysi0lo9qQvbxiQ+FvsCC/YWOecCHAixus=
+golang.org/x/crypto v0.33.0/go.mod h1:bVdXmD7IV/4GdElGPozy6U7lWdRXA4qyRVGJV57uQ5M=
+golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
+golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

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+package main
+
+import (
+	"os"
+
+	"github.com/ProtonMail/gopenpgp/v3/crypto"
+)
+
+const keyFile = "pubkey.asc"
+
+func generateFile() string {
+	return "this is a file"
+}
+
+func encryptFile(content string) []byte {
+	publicKeyArmored, err := os.ReadFile(keyFile)
+	if err != nil {
+		panic(err)
+	}
+
+	publicKey, err := crypto.NewKeyFromArmored(string(publicKeyArmored))
+	if err != nil {
+		panic(err)
+	}
+
+	pgp := crypto.PGP()
+	enc, err := pgp.Encryption().Recipient(publicKey).New()
+	if err != nil {
+		panic(err)
+	}
+
+	message, err := enc.Encrypt([]byte(content))
+	if err != nil {
+		panic(err)
+	}
+
+	messageArmored, err := message.ArmorBytes()
+	if err != nil {
+		panic(err)
+	}
+
+	return messageArmored
+}
+
+func main() {
+	content := generateFile()
+	encrypted := encryptFile(content)
+	err := os.WriteFile("data.gpg", encrypted, 0600)
+	if err != nil {
+		panic(err)
+	}
+}