package ed25519_test

import (
	"bufio"
	"bytes"
	"encoding/hex"
	"fmt"
	"strings"
	"testing"

	"github.com/cloudflare/circl/internal/test"
	"github.com/cloudflare/circl/sign/ed25519"
)

type rfc8032Vector struct {
	private   ed25519.PrivateKey
	public    ed25519.PublicKey
	message   []byte
	signature []byte
}

func (v *rfc8032Vector) fetch(line string) {
	values := strings.Split(line, ":")
	if len(values) != 5 {
		panic(fmt.Errorf("len: %v %v", len(values), values))
	}
	v.private, _ = hex.DecodeString(values[0])
	v.public, _ = hex.DecodeString(values[1])
	v.message, _ = hex.DecodeString(values[2])
	v.signature, _ = hex.DecodeString(values[3])
	v.private = v.private[:ed25519.SeedSize]
	v.signature = v.signature[:ed25519.SignatureSize]
}

func (v *rfc8032Vector) test(t *testing.T, lineNum int) {
	key := ed25519.NewKeyFromSeed(v.private)
	{
		got := key.Public().(ed25519.PublicKey)
		want := v.public
		if !bytes.Equal(got, want) {
			test.ReportError(t, got, want, lineNum, v)
		}

		got = ed25519.Sign(key, v.message)
		want = v.signature
		if !bytes.Equal(got, want) {
			test.ReportError(t, got, want, lineNum, v)
		}
	}
	{
		got := ed25519.Verify(key.Public().(ed25519.PublicKey), v.message, v.signature)
		want := true
		if got != want {
			test.ReportError(t, got, want, lineNum, v)
		}
	}
}

func TestRFC8032(t *testing.T) {
	const nameFile = "testdata/sign.input.txt.gz"
	input, err := test.ReadGzip(nameFile)
	if err != nil {
		t.Fatalf("File %v can not be opened. Error: %v", nameFile, err)
	}

	fScanner := bufio.NewScanner(bytes.NewReader(input))
	var v rfc8032Vector
	for i := 1; fScanner.Scan(); i++ {
		v.fetch(fScanner.Text())
		v.test(t, i)
	}
}

type vector struct {
	name   string
	scheme string
	sk     []byte
	pk     []byte
	sig    []byte
	msg    []byte
	msgLen uint
	ph     bool
	ctx    []byte
	ctxLen uint
}

var vectorsEd25519 = [...]vector{
	{
		name:   "-----TEST 1",
		scheme: "Ed25519Pure",
		sk: []byte{
			0x9d, 0x61, 0xb1, 0x9d, 0xef, 0xfd, 0x5a, 0x60, 0xba, 0x84, 0x4a, 0xf4, 0x92, 0xec, 0x2c, 0xc4,
			0x44, 0x49, 0xc5, 0x69, 0x7b, 0x32, 0x69, 0x19, 0x70, 0x3b, 0xac, 0x03, 0x1c, 0xae, 0x7f, 0x60,
		},
		pk: []byte{
			0xd7, 0x5a, 0x98, 0x01, 0x82, 0xb1, 0x0a, 0xb7, 0xd5, 0x4b, 0xfe, 0xd3, 0xc9, 0x64, 0x07, 0x3a,
			0x0e, 0xe1, 0x72, 0xf3, 0xda, 0xa6, 0x23, 0x25, 0xaf, 0x02, 0x1a, 0x68, 0xf7, 0x07, 0x51, 0x1a,
		},
		msg:    []byte{},
		msgLen: 0,
		sig: []byte{
			0xe5, 0x56, 0x43, 0x00, 0xc3, 0x60, 0xac, 0x72, 0x90, 0x86, 0xe2, 0xcc, 0x80, 0x6e, 0x82, 0x8a,
			0x84, 0x87, 0x7f, 0x1e, 0xb8, 0xe5, 0xd9, 0x74, 0xd8, 0x73, 0xe0, 0x65, 0x22, 0x49, 0x01, 0x55,
			0x5f, 0xb8, 0x82, 0x15, 0x90, 0xa3, 0x3b, 0xac, 0xc6, 0x1e, 0x39, 0x70, 0x1c, 0xf9, 0xb4, 0x6b,
			0xd2, 0x5b, 0xf5, 0xf0, 0x59, 0x5b, 0xbe, 0x24, 0x65, 0x51, 0x41, 0x43, 0x8e, 0x7a, 0x10, 0x0b,
		},
		ph:     false,
		ctx:    []byte{},
		ctxLen: 0,
	},
	{
		name:   "-----TEST 2",
		scheme: "Ed25519Pure",
		sk: []byte{
			0x4c, 0xcd, 0x08, 0x9b, 0x28, 0xff, 0x96, 0xda, 0x9d, 0xb6, 0xc3, 0x46, 0xec, 0x11, 0x4e, 0x0f,
			0x5b, 0x8a, 0x31, 0x9f, 0x35, 0xab, 0xa6, 0x24, 0xda, 0x8c, 0xf6, 0xed, 0x4f, 0xb8, 0xa6, 0xfb,
		},
		pk: []byte{
			0x3d, 0x40, 0x17, 0xc3, 0xe8, 0x43, 0x89, 0x5a, 0x92, 0xb7, 0x0a, 0xa7, 0x4d, 0x1b, 0x7e, 0xbc,
			0x9c, 0x98, 0x2c, 0xcf, 0x2e, 0xc4, 0x96, 0x8c, 0xc0, 0xcd, 0x55, 0xf1, 0x2a, 0xf4, 0x66, 0x0c,
		},
		msg: []byte{
			0x72,
		},
		msgLen: 1,
		sig: []byte{
			0x92, 0xa0, 0x09, 0xa9, 0xf0, 0xd4, 0xca, 0xb8, 0x72, 0x0e, 0x82, 0x0b, 0x5f, 0x64, 0x25, 0x40,
			0xa2, 0xb2, 0x7b, 0x54, 0x16, 0x50, 0x3f, 0x8f, 0xb3, 0x76, 0x22, 0x23, 0xeb, 0xdb, 0x69, 0xda,
			0x08, 0x5a, 0xc1, 0xe4, 0x3e, 0x15, 0x99, 0x6e, 0x45, 0x8f, 0x36, 0x13, 0xd0, 0xf1, 0x1d, 0x8c,
			0x38, 0x7b, 0x2e, 0xae, 0xb4, 0x30, 0x2a, 0xee, 0xb0, 0x0d, 0x29, 0x16, 0x12, 0xbb, 0x0c, 0x00,
		},
		ph:     false,
		ctx:    []byte{},
		ctxLen: 0,
	},
	{
		name:   "-----TEST 3",
		scheme: "Ed25519Pure",
		sk: []byte{
			0xc5, 0xaa, 0x8d, 0xf4, 0x3f, 0x9f, 0x83, 0x7b, 0xed, 0xb7, 0x44, 0x2f, 0x31, 0xdc, 0xb7, 0xb1,
			0x66, 0xd3, 0x85, 0x35, 0x07, 0x6f, 0x09, 0x4b, 0x85, 0xce, 0x3a, 0x2e, 0x0b, 0x44, 0x58, 0xf7,
		},
		pk: []byte{
			0xfc, 0x51, 0xcd, 0x8e, 0x62, 0x18, 0xa1, 0xa3, 0x8d, 0xa4, 0x7e, 0xd0, 0x02, 0x30, 0xf0, 0x58,
			0x08, 0x16, 0xed, 0x13, 0xba, 0x33, 0x03, 0xac, 0x5d, 0xeb, 0x91, 0x15, 0x48, 0x90, 0x80, 0x25,
		},
		msg: []byte{
			0xaf, 0x82,
		},
		msgLen: 2,
		sig: []byte{
			0x62, 0x91, 0xd6, 0x57, 0xde, 0xec, 0x24, 0x02, 0x48, 0x27, 0xe6, 0x9c, 0x3a, 0xbe, 0x01, 0xa3,
			0x0c, 0xe5, 0x48, 0xa2, 0x84, 0x74, 0x3a, 0x44, 0x5e, 0x36, 0x80, 0xd7, 0xdb, 0x5a, 0xc3, 0xac,
			0x18, 0xff, 0x9b, 0x53, 0x8d, 0x16, 0xf2, 0x90, 0xae, 0x67, 0xf7, 0x60, 0x98, 0x4d, 0xc6, 0x59,
			0x4a, 0x7c, 0x15, 0xe9, 0x71, 0x6e, 0xd2, 0x8d, 0xc0, 0x27, 0xbe, 0xce, 0xea, 0x1e, 0xc4, 0x0a,
		},
		ph:     false,
		ctx:    []byte{},
		ctxLen: 0,
	},
	{
		name:   "-----TEST 1024",
		scheme: "Ed25519Pure",
		sk: []byte{
			0xf5, 0xe5, 0x76, 0x7c, 0xf1, 0x53, 0x31, 0x95, 0x17, 0x63, 0x0f, 0x22, 0x68, 0x76, 0xb8, 0x6c,
			0x81, 0x60, 0xcc, 0x58, 0x3b, 0xc0, 0x13, 0x74, 0x4c, 0x6b, 0xf2, 0x55, 0xf5, 0xcc, 0x0e, 0xe5,
		},
		pk: []byte{
			0x27, 0x81, 0x17, 0xfc, 0x14, 0x4c, 0x72, 0x34, 0x0f, 0x67, 0xd0, 0xf2, 0x31, 0x6e, 0x83, 0x86,
			0xce, 0xff, 0xbf, 0x2b, 0x24, 0x28, 0xc9, 0xc5, 0x1f, 0xef, 0x7c, 0x59, 0x7f, 0x1d, 0x42, 0x6e,
		},
		msg: []byte{
			0x08, 0xb8, 0xb2, 0xb7, 0x33, 0x42, 0x42, 0x43, 0x76, 0x0f, 0xe4, 0x26, 0xa4, 0xb5, 0x49, 0x08,
			0x63, 0x21, 0x10, 0xa6, 0x6c, 0x2f, 0x65, 0x91, 0xea, 0xbd, 0x33, 0x45, 0xe3, 0xe4, 0xeb, 0x98,
			0xfa, 0x6e, 0x26, 0x4b, 0xf0, 0x9e, 0xfe, 0x12, 0xee, 0x50, 0xf8, 0xf5, 0x4e, 0x9f, 0x77, 0xb1,
			0xe3, 0x55, 0xf6, 0xc5, 0x05, 0x44, 0xe2, 0x3f, 0xb1, 0x43, 0x3d, 0xdf, 0x73, 0xbe, 0x84, 0xd8,
			0x79, 0xde, 0x7c, 0x00, 0x46, 0xdc, 0x49, 0x96, 0xd9, 0xe7, 0x73, 0xf4, 0xbc, 0x9e, 0xfe, 0x57,
			0x38, 0x82, 0x9a, 0xdb, 0x26, 0xc8, 0x1b, 0x37, 0xc9, 0x3a, 0x1b, 0x27, 0x0b, 0x20, 0x32, 0x9d,
			0x65, 0x86, 0x75, 0xfc, 0x6e, 0xa5, 0x34, 0xe0, 0x81, 0x0a, 0x44, 0x32, 0x82, 0x6b, 0xf5, 0x8c,
			0x94, 0x1e, 0xfb, 0x65, 0xd5, 0x7a, 0x33, 0x8b, 0xbd, 0x2e, 0x26, 0x64, 0x0f, 0x89, 0xff, 0xbc,
			0x1a, 0x85, 0x8e, 0xfc, 0xb8, 0x55, 0x0e, 0xe3, 0xa5, 0xe1, 0x99, 0x8b, 0xd1, 0x77, 0xe9, 0x3a,
			0x73, 0x63, 0xc3, 0x44, 0xfe, 0x6b, 0x19, 0x9e, 0xe5, 0xd0, 0x2e, 0x82, 0xd5, 0x22, 0xc4, 0xfe,
			0xba, 0x15, 0x45, 0x2f, 0x80, 0x28, 0x8a, 0x82, 0x1a, 0x57, 0x91, 0x16, 0xec, 0x6d, 0xad, 0x2b,
			0x3b, 0x31, 0x0d, 0xa9, 0x03, 0x40, 0x1a, 0xa6, 0x21, 0x00, 0xab, 0x5d, 0x1a, 0x36, 0x55, 0x3e,
			0x06, 0x20, 0x3b, 0x33, 0x89, 0x0c, 0xc9, 0xb8, 0x32, 0xf7, 0x9e, 0xf8, 0x05, 0x60, 0xcc, 0xb9,
			0xa3, 0x9c, 0xe7, 0x67, 0x96, 0x7e, 0xd6, 0x28, 0xc6, 0xad, 0x57, 0x3c, 0xb1, 0x16, 0xdb, 0xef,
			0xef, 0xd7, 0x54, 0x99, 0xda, 0x96, 0xbd, 0x68, 0xa8, 0xa9, 0x7b, 0x92, 0x8a, 0x8b, 0xbc, 0x10,
			0x3b, 0x66, 0x21, 0xfc, 0xde, 0x2b, 0xec, 0xa1, 0x23, 0x1d, 0x20, 0x6b, 0xe6, 0xcd, 0x9e, 0xc7,
			0xaf, 0xf6, 0xf6, 0xc9, 0x4f, 0xcd, 0x72, 0x04, 0xed, 0x34, 0x55, 0xc6, 0x8c, 0x83, 0xf4, 0xa4,
			0x1d, 0xa4, 0xaf, 0x2b, 0x74, 0xef, 0x5c, 0x53, 0xf1, 0xd8, 0xac, 0x70, 0xbd, 0xcb, 0x7e, 0xd1,
			0x85, 0xce, 0x81, 0xbd, 0x84, 0x35, 0x9d, 0x44, 0x25, 0x4d, 0x95, 0x62, 0x9e, 0x98, 0x55, 0xa9,
			0x4a, 0x7c, 0x19, 0x58, 0xd1, 0xf8, 0xad, 0xa5, 0xd0, 0x53, 0x2e, 0xd8, 0xa5, 0xaa, 0x3f, 0xb2,
			0xd1, 0x7b, 0xa7, 0x0e, 0xb6, 0x24, 0x8e, 0x59, 0x4e, 0x1a, 0x22, 0x97, 0xac, 0xbb, 0xb3, 0x9d,
			0x50, 0x2f, 0x1a, 0x8c, 0x6e, 0xb6, 0xf1, 0xce, 0x22, 0xb3, 0xde, 0x1a, 0x1f, 0x40, 0xcc, 0x24,
			0x55, 0x41, 0x19, 0xa8, 0x31, 0xa9, 0xaa, 0xd6, 0x07, 0x9c, 0xad, 0x88, 0x42, 0x5d, 0xe6, 0xbd,
			0xe1, 0xa9, 0x18, 0x7e, 0xbb, 0x60, 0x92, 0xcf, 0x67, 0xbf, 0x2b, 0x13, 0xfd, 0x65, 0xf2, 0x70,
			0x88, 0xd7, 0x8b, 0x7e, 0x88, 0x3c, 0x87, 0x59, 0xd2, 0xc4, 0xf5, 0xc6, 0x5a, 0xdb, 0x75, 0x53,
			0x87, 0x8a, 0xd5, 0x75, 0xf9, 0xfa, 0xd8, 0x78, 0xe8, 0x0a, 0x0c, 0x9b, 0xa6, 0x3b, 0xcb, 0xcc,
			0x27, 0x32, 0xe6, 0x94, 0x85, 0xbb, 0xc9, 0xc9, 0x0b, 0xfb, 0xd6, 0x24, 0x81, 0xd9, 0x08, 0x9b,
			0xec, 0xcf, 0x80, 0xcf, 0xe2, 0xdf, 0x16, 0xa2, 0xcf, 0x65, 0xbd, 0x92, 0xdd, 0x59, 0x7b, 0x07,
			0x07, 0xe0, 0x91, 0x7a, 0xf4, 0x8b, 0xbb, 0x75, 0xfe, 0xd4, 0x13, 0xd2, 0x38, 0xf5, 0x55, 0x5a,
			0x7a, 0x56, 0x9d, 0x80, 0xc3, 0x41, 0x4a, 0x8d, 0x08, 0x59, 0xdc, 0x65, 0xa4, 0x61, 0x28, 0xba,
			0xb2, 0x7a, 0xf8, 0x7a, 0x71, 0x31, 0x4f, 0x31, 0x8c, 0x78, 0x2b, 0x23, 0xeb, 0xfe, 0x80, 0x8b,
			0x82, 0xb0, 0xce, 0x26, 0x40, 0x1d, 0x2e, 0x22, 0xf0, 0x4d, 0x83, 0xd1, 0x25, 0x5d, 0xc5, 0x1a,
			0xdd, 0xd3, 0xb7, 0x5a, 0x2b, 0x1a, 0xe0, 0x78, 0x45, 0x04, 0xdf, 0x54, 0x3a, 0xf8, 0x96, 0x9b,
			0xe3, 0xea, 0x70, 0x82, 0xff, 0x7f, 0xc9, 0x88, 0x8c, 0x14, 0x4d, 0xa2, 0xaf, 0x58, 0x42, 0x9e,
			0xc9, 0x60, 0x31, 0xdb, 0xca, 0xd3, 0xda, 0xd9, 0xaf, 0x0d, 0xcb, 0xaa, 0xaf, 0x26, 0x8c, 0xb8,
			0xfc, 0xff, 0xea, 0xd9, 0x4f, 0x3c, 0x7c, 0xa4, 0x95, 0xe0, 0x56, 0xa9, 0xb4, 0x7a, 0xcd, 0xb7,
			0x51, 0xfb, 0x73, 0xe6, 0x66, 0xc6, 0xc6, 0x55, 0xad, 0xe8, 0x29, 0x72, 0x97, 0xd0, 0x7a, 0xd1,
			0xba, 0x5e, 0x43, 0xf1, 0xbc, 0xa3, 0x23, 0x01, 0x65, 0x13, 0x39, 0xe2, 0x29, 0x04, 0xcc, 0x8c,
			0x42, 0xf5, 0x8c, 0x30, 0xc0, 0x4a, 0xaf, 0xdb, 0x03, 0x8d, 0xda, 0x08, 0x47, 0xdd, 0x98, 0x8d,
			0xcd, 0xa6, 0xf3, 0xbf, 0xd1, 0x5c, 0x4b, 0x4c, 0x45, 0x25, 0x00, 0x4a, 0xa0, 0x6e, 0xef, 0xf8,
			0xca, 0x61, 0x78, 0x3a, 0xac, 0xec, 0x57, 0xfb, 0x3d, 0x1f, 0x92, 0xb0, 0xfe, 0x2f, 0xd1, 0xa8,
			0x5f, 0x67, 0x24, 0x51, 0x7b, 0x65, 0xe6, 0x14, 0xad, 0x68, 0x08, 0xd6, 0xf6, 0xee, 0x34, 0xdf,
			0xf7, 0x31, 0x0f, 0xdc, 0x82, 0xae, 0xbf, 0xd9, 0x04, 0xb0, 0x1e, 0x1d, 0xc5, 0x4b, 0x29, 0x27,
			0x09, 0x4b, 0x2d, 0xb6, 0x8d, 0x6f, 0x90, 0x3b, 0x68, 0x40, 0x1a, 0xde, 0xbf, 0x5a, 0x7e, 0x08,
			0xd7, 0x8f, 0xf4, 0xef, 0x5d, 0x63, 0x65, 0x3a, 0x65, 0x04, 0x0c, 0xf9, 0xbf, 0xd4, 0xac, 0xa7,
			0x98, 0x4a, 0x74, 0xd3, 0x71, 0x45, 0x98, 0x67, 0x80, 0xfc, 0x0b, 0x16, 0xac, 0x45, 0x16, 0x49,
			0xde, 0x61, 0x88, 0xa7, 0xdb, 0xdf, 0x19, 0x1f, 0x64, 0xb5, 0xfc, 0x5e, 0x2a, 0xb4, 0x7b, 0x57,
			0xf7, 0xf7, 0x27, 0x6c, 0xd4, 0x19, 0xc1, 0x7a, 0x3c, 0xa8, 0xe1, 0xb9, 0x39, 0xae, 0x49, 0xe4,
			0x88, 0xac, 0xba, 0x6b, 0x96, 0x56, 0x10, 0xb5, 0x48, 0x01, 0x09, 0xc8, 0xb1, 0x7b, 0x80, 0xe1,
			0xb7, 0xb7, 0x50, 0xdf, 0xc7, 0x59, 0x8d, 0x5d, 0x50, 0x11, 0xfd, 0x2d, 0xcc, 0x56, 0x00, 0xa3,
			0x2e, 0xf5, 0xb5, 0x2a, 0x1e, 0xcc, 0x82, 0x0e, 0x30, 0x8a, 0xa3, 0x42, 0x72, 0x1a, 0xac, 0x09,
			0x43, 0xbf, 0x66, 0x86, 0xb6, 0x4b, 0x25, 0x79, 0x37, 0x65, 0x04, 0xcc, 0xc4, 0x93, 0xd9, 0x7e,
			0x6a, 0xed, 0x3f, 0xb0, 0xf9, 0xcd, 0x71, 0xa4, 0x3d, 0xd4, 0x97, 0xf0, 0x1f, 0x17, 0xc0, 0xe2,
			0xcb, 0x37, 0x97, 0xaa, 0x2a, 0x2f, 0x25, 0x66, 0x56, 0x16, 0x8e, 0x6c, 0x49, 0x6a, 0xfc, 0x5f,
			0xb9, 0x32, 0x46, 0xf6, 0xb1, 0x11, 0x63, 0x98, 0xa3, 0x46, 0xf1, 0xa6, 0x41, 0xf3, 0xb0, 0x41,
			0xe9, 0x89, 0xf7, 0x91, 0x4f, 0x90, 0xcc, 0x2c, 0x7f, 0xff, 0x35, 0x78, 0x76, 0xe5, 0x06, 0xb5,
			0x0d, 0x33, 0x4b, 0xa7, 0x7c, 0x22, 0x5b, 0xc3, 0x07, 0xba, 0x53, 0x71, 0x52, 0xf3, 0xf1, 0x61,
			0x0e, 0x4e, 0xaf, 0xe5, 0x95, 0xf6, 0xd9, 0xd9, 0x0d, 0x11, 0xfa, 0xa9, 0x33, 0xa1, 0x5e, 0xf1,
			0x36, 0x95, 0x46, 0x86, 0x8a, 0x7f, 0x3a, 0x45, 0xa9, 0x67, 0x68, 0xd4, 0x0f, 0xd9, 0xd0, 0x34,
			0x12, 0xc0, 0x91, 0xc6, 0x31, 0x5c, 0xf4, 0xfd, 0xe7, 0xcb, 0x68, 0x60, 0x69, 0x37, 0x38, 0x0d,
			0xb2, 0xea, 0xaa, 0x70, 0x7b, 0x4c, 0x41, 0x85, 0xc3, 0x2e, 0xdd, 0xcd, 0xd3, 0x06, 0x70, 0x5e,
			0x4d, 0xc1, 0xff, 0xc8, 0x72, 0xee, 0xee, 0x47, 0x5a, 0x64, 0xdf, 0xac, 0x86, 0xab, 0xa4, 0x1c,
			0x06, 0x18, 0x98, 0x3f, 0x87, 0x41, 0xc5, 0xef, 0x68, 0xd3, 0xa1, 0x01, 0xe8, 0xa3, 0xb8, 0xca,
			0xc6, 0x0c, 0x90, 0x5c, 0x15, 0xfc, 0x91, 0x08, 0x40, 0xb9, 0x4c, 0x00, 0xa0, 0xb9, 0xd0,
		},
		msgLen: 1023,
		sig: []byte{
			0x0a, 0xab, 0x4c, 0x90, 0x05, 0x01, 0xb3, 0xe2, 0x4d, 0x7c, 0xdf, 0x46, 0x63, 0x32, 0x6a, 0x3a,
			0x87, 0xdf, 0x5e, 0x48, 0x43, 0xb2, 0xcb, 0xdb, 0x67, 0xcb, 0xf6, 0xe4, 0x60, 0xfe, 0xc3, 0x50,
			0xaa, 0x53, 0x71, 0xb1, 0x50, 0x8f, 0x9f, 0x45, 0x28, 0xec, 0xea, 0x23, 0xc4, 0x36, 0xd9, 0x4b,
			0x5e, 0x8f, 0xcd, 0x4f, 0x68, 0x1e, 0x30, 0xa6, 0xac, 0x00, 0xa9, 0x70, 0x4a, 0x18, 0x8a, 0x03,
		},
		ph:     false,
		ctx:    []byte{},
		ctxLen: 0,
	},
	{
		name:   "-----TEST sha(abc)",
		scheme: "Ed25519Pure",
		sk: []byte{
			0x83, 0x3f, 0xe6, 0x24, 0x09, 0x23, 0x7b, 0x9d, 0x62, 0xec, 0x77, 0x58, 0x75, 0x20, 0x91, 0x1e,
			0x9a, 0x75, 0x9c, 0xec, 0x1d, 0x19, 0x75, 0x5b, 0x7d, 0xa9, 0x01, 0xb9, 0x6d, 0xca, 0x3d, 0x42,
		},
		pk: []byte{
			0xec, 0x17, 0x2b, 0x93, 0xad, 0x5e, 0x56, 0x3b, 0xf4, 0x93, 0x2c, 0x70, 0xe1, 0x24, 0x50, 0x34,
			0xc3, 0x54, 0x67, 0xef, 0x2e, 0xfd, 0x4d, 0x64, 0xeb, 0xf8, 0x19, 0x68, 0x34, 0x67, 0xe2, 0xbf,
		},
		msg: []byte{
			0xdd, 0xaf, 0x35, 0xa1, 0x93, 0x61, 0x7a, 0xba, 0xcc, 0x41, 0x73, 0x49, 0xae, 0x20, 0x41, 0x31,
			0x12, 0xe6, 0xfa, 0x4e, 0x89, 0xa9, 0x7e, 0xa2, 0x0a, 0x9e, 0xee, 0xe6, 0x4b, 0x55, 0xd3, 0x9a,
			0x21, 0x92, 0x99, 0x2a, 0x27, 0x4f, 0xc1, 0xa8, 0x36, 0xba, 0x3c, 0x23, 0xa3, 0xfe, 0xeb, 0xbd,
			0x45, 0x4d, 0x44, 0x23, 0x64, 0x3c, 0xe8, 0x0e, 0x2a, 0x9a, 0xc9, 0x4f, 0xa5, 0x4c, 0xa4, 0x9f,
		},
		msgLen: 64,
		sig: []byte{
			0xdc, 0x2a, 0x44, 0x59, 0xe7, 0x36, 0x96, 0x33, 0xa5, 0x2b, 0x1b, 0xf2, 0x77, 0x83, 0x9a, 0x00,
			0x20, 0x10, 0x09, 0xa3, 0xef, 0xbf, 0x3e, 0xcb, 0x69, 0xbe, 0xa2, 0x18, 0x6c, 0x26, 0xb5, 0x89,
			0x09, 0x35, 0x1f, 0xc9, 0xac, 0x90, 0xb3, 0xec, 0xfd, 0xfb, 0xc7, 0xc6, 0x64, 0x31, 0xe0, 0x30,
			0x3d, 0xca, 0x17, 0x9c, 0x13, 0x8a, 0xc1, 0x7a, 0xd9, 0xbe, 0xf1, 0x17, 0x73, 0x31, 0xa7, 0x04,
		},
		ph:     false,
		ctx:    []byte{},
		ctxLen: 0,
	},
	{
		name:   "-----TEST abc",
		scheme: "Ed25519Ph",
		sk: []byte{
			0x83, 0x3f, 0xe6, 0x24, 0x09, 0x23, 0x7b, 0x9d, 0x62, 0xec, 0x77, 0x58, 0x75, 0x20, 0x91, 0x1e,
			0x9a, 0x75, 0x9c, 0xec, 0x1d, 0x19, 0x75, 0x5b, 0x7d, 0xa9, 0x01, 0xb9, 0x6d, 0xca, 0x3d, 0x42,
		},
		pk: []byte{
			0xec, 0x17, 0x2b, 0x93, 0xad, 0x5e, 0x56, 0x3b, 0xf4, 0x93, 0x2c, 0x70, 0xe1, 0x24, 0x50, 0x34,
			0xc3, 0x54, 0x67, 0xef, 0x2e, 0xfd, 0x4d, 0x64, 0xeb, 0xf8, 0x19, 0x68, 0x34, 0x67, 0xe2, 0xbf,
		},
		msg: []byte{
			0x61, 0x62, 0x63,
		},
		msgLen: 3,
		sig: []byte{
			0x98, 0xa7, 0x02, 0x22, 0xf0, 0xb8, 0x12, 0x1a, 0xa9, 0xd3, 0x0f, 0x81, 0x3d, 0x68, 0x3f, 0x80,
			0x9e, 0x46, 0x2b, 0x46, 0x9c, 0x7f, 0xf8, 0x76, 0x39, 0x49, 0x9b, 0xb9, 0x4e, 0x6d, 0xae, 0x41,
			0x31, 0xf8, 0x50, 0x42, 0x46, 0x3c, 0x2a, 0x35, 0x5a, 0x20, 0x03, 0xd0, 0x62, 0xad, 0xf5, 0xaa,
			0xa1, 0x0b, 0x8c, 0x61, 0xe6, 0x36, 0x06, 0x2a, 0xaa, 0xd1, 0x1c, 0x2a, 0x26, 0x08, 0x34, 0x06,
		},
		ph:     true,
		ctx:    []byte{},
		ctxLen: 0,
	},
	{
		name:   "-----foo",
		scheme: "Ed25519Ctx",
		sk: []byte{
			0x03, 0x05, 0x33, 0x4e, 0x38, 0x1a, 0xf7, 0x8f, 0x14, 0x1c, 0xb6, 0x66, 0xf6, 0x19, 0x9f, 0x57,
			0xbc, 0x34, 0x95, 0x33, 0x5a, 0x25, 0x6a, 0x95, 0xbd, 0x2a, 0x55, 0xbf, 0x54, 0x66, 0x63, 0xf6,
		},
		pk: []byte{
			0xdf, 0xc9, 0x42, 0x5e, 0x4f, 0x96, 0x8f, 0x7f, 0x0c, 0x29, 0xf0, 0x25, 0x9c, 0xf5, 0xf9, 0xae,
			0xd6, 0x85, 0x1c, 0x2b, 0xb4, 0xad, 0x8b, 0xfb, 0x86, 0x0c, 0xfe, 0xe0, 0xab, 0x24, 0x82, 0x92,
		},
		msg: []byte{
			0xf7, 0x26, 0x93, 0x6d, 0x19, 0xc8, 0x00, 0x49, 0x4e, 0x3f, 0xda, 0xff, 0x20, 0xb2, 0x76, 0xa8,
		},
		msgLen: 16,
		sig: []byte{
			0x55, 0xa4, 0xcc, 0x2f, 0x70, 0xa5, 0x4e, 0x04, 0x28, 0x8c, 0x5f, 0x4c, 0xd1, 0xe4, 0x5a, 0x7b,
			0xb5, 0x20, 0xb3, 0x62, 0x92, 0x91, 0x18, 0x76, 0xca, 0xda, 0x73, 0x23, 0x19, 0x8d, 0xd8, 0x7a,
			0x8b, 0x36, 0x95, 0x0b, 0x95, 0x13, 0x00, 0x22, 0x90, 0x7a, 0x7f, 0xb7, 0xc4, 0xe9, 0xb2, 0xd5,
			0xf6, 0xcc, 0xa6, 0x85, 0xa5, 0x87, 0xb4, 0xb2, 0x1f, 0x4b, 0x88, 0x8e, 0x4e, 0x7e, 0xdb, 0x0d,
		},
		ph: false,
		ctx: []byte{
			0x66, 0x6f, 0x6f,
		},
		ctxLen: 3,
	},
	{
		name:   "-----bar",
		scheme: "Ed25519Ctx",
		sk: []byte{
			0x03, 0x05, 0x33, 0x4e, 0x38, 0x1a, 0xf7, 0x8f, 0x14, 0x1c, 0xb6, 0x66, 0xf6, 0x19, 0x9f, 0x57,
			0xbc, 0x34, 0x95, 0x33, 0x5a, 0x25, 0x6a, 0x95, 0xbd, 0x2a, 0x55, 0xbf, 0x54, 0x66, 0x63, 0xf6,
		},
		pk: []byte{
			0xdf, 0xc9, 0x42, 0x5e, 0x4f, 0x96, 0x8f, 0x7f, 0x0c, 0x29, 0xf0, 0x25, 0x9c, 0xf5, 0xf9, 0xae,
			0xd6, 0x85, 0x1c, 0x2b, 0xb4, 0xad, 0x8b, 0xfb, 0x86, 0x0c, 0xfe, 0xe0, 0xab, 0x24, 0x82, 0x92,
		},
		msg: []byte{
			0xf7, 0x26, 0x93, 0x6d, 0x19, 0xc8, 0x00, 0x49, 0x4e, 0x3f, 0xda, 0xff, 0x20, 0xb2, 0x76, 0xa8,
		},
		msgLen: 16,
		sig: []byte{
			0xfc, 0x60, 0xd5, 0x87, 0x2f, 0xc4, 0x6b, 0x3a, 0xa6, 0x9f, 0x8b, 0x5b, 0x43, 0x51, 0xd5, 0x80,
			0x8f, 0x92, 0xbc, 0xc0, 0x44, 0x60, 0x6d, 0xb0, 0x97, 0xab, 0xab, 0x6d, 0xbc, 0xb1, 0xae, 0xe3,
			0x21, 0x6c, 0x48, 0xe8, 0xb3, 0xb6, 0x64, 0x31, 0xb5, 0xb1, 0x86, 0xd1, 0xd2, 0x8f, 0x8e, 0xe1,
			0x5a, 0x5c, 0xa2, 0xdf, 0x66, 0x68, 0x34, 0x62, 0x91, 0xc2, 0x04, 0x3d, 0x4e, 0xb3, 0xe9, 0x0d,
		},
		ph: false,
		ctx: []byte{
			0x62, 0x61, 0x72,
		},
		ctxLen: 3,
	},
	{
		name:   "-----foo2",
		scheme: "Ed25519Ctx",
		sk: []byte{
			0x03, 0x05, 0x33, 0x4e, 0x38, 0x1a, 0xf7, 0x8f, 0x14, 0x1c, 0xb6, 0x66, 0xf6, 0x19, 0x9f, 0x57,
			0xbc, 0x34, 0x95, 0x33, 0x5a, 0x25, 0x6a, 0x95, 0xbd, 0x2a, 0x55, 0xbf, 0x54, 0x66, 0x63, 0xf6,
		},
		pk: []byte{
			0xdf, 0xc9, 0x42, 0x5e, 0x4f, 0x96, 0x8f, 0x7f, 0x0c, 0x29, 0xf0, 0x25, 0x9c, 0xf5, 0xf9, 0xae,
			0xd6, 0x85, 0x1c, 0x2b, 0xb4, 0xad, 0x8b, 0xfb, 0x86, 0x0c, 0xfe, 0xe0, 0xab, 0x24, 0x82, 0x92,
		},
		msg: []byte{
			0x50, 0x8e, 0x9e, 0x68, 0x82, 0xb9, 0x79, 0xfe, 0xa9, 0x00, 0xf6, 0x2a, 0xdc, 0xea, 0xca, 0x35,
		},
		msgLen: 16,
		sig: []byte{
			0x8b, 0x70, 0xc1, 0xcc, 0x83, 0x10, 0xe1, 0xde, 0x20, 0xac, 0x53, 0xce, 0x28, 0xae, 0x6e, 0x72,
			0x07, 0xf3, 0x3c, 0x32, 0x95, 0xe0, 0x3b, 0xb5, 0xc0, 0x73, 0x2a, 0x1d, 0x20, 0xdc, 0x64, 0x90,
			0x89, 0x22, 0xa8, 0xb0, 0x52, 0xcf, 0x99, 0xb7, 0xc4, 0xfe, 0x10, 0x7a, 0x5a, 0xbb, 0x5b, 0x2c,
			0x40, 0x85, 0xae, 0x75, 0x89, 0x0d, 0x02, 0xdf, 0x26, 0x26, 0x9d, 0x89, 0x45, 0xf8, 0x4b, 0x0b,
		},
		ph: false,
		ctx: []byte{
			0x66, 0x6f, 0x6f,
		},
		ctxLen: 3,
	},
	{
		name:   "-----foo3",
		scheme: "Ed25519Ctx",
		sk: []byte{
			0xab, 0x9c, 0x28, 0x53, 0xce, 0x29, 0x7d, 0xda, 0xb8, 0x5c, 0x99, 0x3b, 0x3a, 0xe1, 0x4b, 0xca,
			0xd3, 0x9b, 0x2c, 0x68, 0x2b, 0xea, 0xbc, 0x27, 0xd6, 0xd4, 0xeb, 0x20, 0x71, 0x1d, 0x65, 0x60,
		},
		pk: []byte{
			0x0f, 0x1d, 0x12, 0x74, 0x94, 0x3b, 0x91, 0x41, 0x58, 0x89, 0x15, 0x2e, 0x89, 0x3d, 0x80, 0xe9,
			0x32, 0x75, 0xa1, 0xfc, 0x0b, 0x65, 0xfd, 0x71, 0xb4, 0xb0, 0xdd, 0xa1, 0x0a, 0xd7, 0xd7, 0x72,
		},
		msg: []byte{
			0xf7, 0x26, 0x93, 0x6d, 0x19, 0xc8, 0x00, 0x49, 0x4e, 0x3f, 0xda, 0xff, 0x20, 0xb2, 0x76, 0xa8,
		},
		msgLen: 16,
		sig: []byte{
			0x21, 0x65, 0x5b, 0x5f, 0x1a, 0xa9, 0x65, 0x99, 0x6b, 0x3f, 0x97, 0xb3, 0xc8, 0x49, 0xea, 0xfb,
			0xa9, 0x22, 0xa0, 0xa6, 0x29, 0x92, 0xf7, 0x3b, 0x3d, 0x1b, 0x73, 0x10, 0x6a, 0x84, 0xad, 0x85,
			0xe9, 0xb8, 0x6a, 0x7b, 0x60, 0x05, 0xea, 0x86, 0x83, 0x37, 0xff, 0x2d, 0x20, 0xa7, 0xf5, 0xfb,
			0xd4, 0xcd, 0x10, 0xb0, 0xbe, 0x49, 0xa6, 0x8d, 0xa2, 0xb2, 0xe0, 0xdc, 0x0a, 0xd8, 0x96, 0x0f,
		},
		ph: false,
		ctx: []byte{
			0x66, 0x6f, 0x6f,
		},
		ctxLen: 3,
	},
}

func (v vector) isPure() bool      { return v.scheme == "Ed25519Pure" }
func (v vector) isPreHashed() bool { return v.scheme == "Ed25519Ph" }
func (v vector) hasContext() bool  { return v.scheme == "Ed25519Ctx" }
func (v vector) matchMsgLen() bool { return uint(len(v.msg)) == v.msgLen }
func (v vector) matchCtxLen() bool { return uint(len(v.ctx)) == v.ctxLen }

func (v vector) testPublicKey(t *testing.T) {
	keys := ed25519.NewKeyFromSeed(v.sk)
	got := keys.Public().(ed25519.PublicKey)
	want := v.pk

	if !bytes.Equal(got, want) {
		test.ReportError(t, got, want, v.name)
	}
}

func (v vector) testSign(t *testing.T) {
	key := ed25519.NewKeyFromSeed(v.sk)

	var got []byte

	if v.ph {
		got = ed25519.SignPh(key, v.msg, "")
	} else if v.ctxLen > 0 {
		got = ed25519.SignWithCtx(key, v.msg, string(v.ctx))
	} else {
		got = ed25519.Sign(key, v.msg)
	}

	want := v.sig
	if !bytes.Equal(got, want) {
		test.ReportError(t, got, want, v.name)
	}
}

func (v vector) testVerify(t *testing.T) {
	var got bool
	if v.ph {
		got = ed25519.VerifyPh(v.pk, v.msg, v.sig, "")
	} else if v.ctxLen > 0 {
		got = ed25519.VerifyWithCtx(v.pk, v.msg, v.sig, string(v.ctx))
	} else {
		got = ed25519.Verify(v.pk, v.msg, v.sig)
	}

	want := true

	if got != want {
		test.ReportError(t, got, want, v.name)
	}
}

func TestEd25519(t *testing.T) {
	for _, v := range vectorsEd25519 {
		got := (v.isPure() || v.isPreHashed() || v.hasContext()) && v.matchMsgLen() && v.matchCtxLen()
		want := true
		if got != want {
			test.ReportError(t, got, want, v.sk)
		}

		v.testPublicKey(t)
		v.testSign(t)
		v.testVerify(t)
	}
}
