package main // go run . | bash import ( "crypto/ed25519" "crypto/rand" "encoding/hex" "flag" "fmt" "log" "git.sigsum.org/sigsum-go/pkg/types" ) var ( shardHint = flag.Uint64("shard_hint", 0, "shard hint (decimal)") preimage = flag.String("preimage", "", "preimage (hex)") sk = flag.String("sk", "", "secret key (hex)") domainHint = flag.String("domain_hint", "example.com", "domain hint (string)") base_url = flag.String("base_url", "localhost:6965/testonly", "base url (string)") ) func main() { flag.Parse() var privBuf [64]byte var priv ed25519.PrivateKey = ed25519.PrivateKey(privBuf[:]) mustDecodeHex(*sk, priv[:]) var p types.Hash if *preimage != "" { mustDecodeHex(*preimage, p[:]) } else { mustPutRandom(p[:]) } msg := types.Statement{ ShardHint: *shardHint, Checksum: *types.HashFn(p[:]), } sig := ed25519.Sign(priv, msg.ToBinary()) fmt.Printf("echo \"shard_hint=%d\npreimage=%x\nsignature=%x\nverification_key=%x\ndomain_hint=%s\" | curl --data-binary @- %s/sigsum/v0/add-leaf\n", *shardHint, p[:], sig, priv.Public().(ed25519.PublicKey)[:], *domainHint, *base_url, ) } func mustDecodeHex(s string, buf []byte) { b, err := hex.DecodeString(s) if err != nil { log.Fatal(err) } if len(b) != len(buf) { log.Fatal("bad flag: invalid buffer length") } copy(buf, b) } func mustPutRandom(buf []byte) { _, err := rand.Read(buf) if err != nil { log.Fatal(err) } }