forked from TrueCloudLab/restic
319 lines
11 KiB
Go
319 lines
11 KiB
Go
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package acme
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import (
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"crypto/ecdsa"
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"crypto/elliptic"
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"crypto/rsa"
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"crypto/x509"
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"encoding/base64"
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"encoding/json"
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"encoding/pem"
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"fmt"
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"math/big"
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"testing"
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)
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const (
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testKeyPEM = `
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-----BEGIN RSA PRIVATE KEY-----
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MIIEowIBAAKCAQEA4xgZ3eRPkwoRvy7qeRUbmMDe0V+xH9eWLdu0iheeLlrmD2mq
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WXfP9IeSKApbn34g8TuAS9g5zhq8ELQ3kmjr+KV86GAMgI6VAcGlq3QrzpTCf/30
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Ab7+zawrfRaFONa1HwEzPY1KHnGVkxJc85gNkwYI9SY2RHXtvln3zs5wITNrdosq
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EXeaIkVYBEhbhNu54pp3kxo6TuWLi9e6pXeWetEwmlBwtWZlPoib2j3TxLBksKZf
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oyFyek380mHgJAumQ/I2fjj98/97mk3ihOY4AgVdCDj1z/GCoZkG5Rq7nbCGyosy
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KWyDX00Zs+nNqVhoLeIvXC4nnWdJMZ6rogxyQQIDAQABAoIBACIEZTOI1Kao9nmV
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9IeIsuaR1Y61b9neOF/MLmIVIZu+AAJFCMB4Iw11FV6sFodwpEyeZhx2WkpWVN+H
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r19eGiLX3zsL0DOdqBJoSIHDWCCMxgnYJ6nvS0nRxX3qVrBp8R2g12Ub+gNPbmFm
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ecf/eeERIVxfifd9VsyRu34eDEvcmKFuLYbElFcPh62xE3x12UZvV/sN7gXbawpP
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G+w255vbE5MoaKdnnO83cTFlcHvhn24M/78qP7Te5OAeelr1R89kYxQLpuGe4fbS
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zc6E3ym5Td6urDetGGrSY1Eu10/8sMusX+KNWkm+RsBRbkyKq72ks/qKpOxOa+c6
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9gm+Y8ECgYEA/iNUyg1ubRdH11p82l8KHtFC1DPE0V1gSZsX29TpM5jS4qv46K+s
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8Ym1zmrORM8x+cynfPx1VQZQ34EYeCMIX212ryJ+zDATl4NE0I4muMvSiH9vx6Xc
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7FmhNnaYzPsBL5Tm9nmtQuP09YEn8poiOJFiDs/4olnD5ogA5O4THGkCgYEA5MIL
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qWYBUuqbEWLRtMruUtpASclrBqNNsJEsMGbeqBJmoMxdHeSZckbLOrqm7GlMyNRJ
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Ne/5uWRGSzaMYuGmwsPpERzqEvYFnSrpjW5YtXZ+JtxFXNVfm9Z1gLLgvGpOUCIU
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RbpoDckDe1vgUuk3y5+DjZihs+rqIJ45XzXTzBkCgYBWuf3segruJZy5rEKhTv+o
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JqeUvRn0jNYYKFpLBeyTVBrbie6GkbUGNIWbrK05pC+c3K9nosvzuRUOQQL1tJbd
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4gA3oiD9U4bMFNr+BRTHyZ7OQBcIXdz3t1qhuHVKtnngIAN1p25uPlbRFUNpshnt
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jgeVoHlsBhApcs5DUc+pyQKBgDzeHPg/+g4z+nrPznjKnktRY1W+0El93kgi+J0Q
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YiJacxBKEGTJ1MKBb8X6sDurcRDm22wMpGfd9I5Cv2v4GsUsF7HD/cx5xdih+G73
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c4clNj/k0Ff5Nm1izPUno4C+0IOl7br39IPmfpSuR6wH/h6iHQDqIeybjxyKvT1G
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N0rRAoGBAKGD+4ZI/E1MoJ5CXB8cDDMHagbE3cq/DtmYzE2v1DFpQYu5I4PCm5c7
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EQeIP6dZtv8IMgtGIb91QX9pXvP0aznzQKwYIA8nZgoENCPfiMTPiEDT9e/0lObO
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9XWsXpbSTsRPj0sv1rB+UzBJ0PgjK4q2zOF0sNo7b1+6nlM3BWPx
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-----END RSA PRIVATE KEY-----
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`
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// This thumbprint is for the testKey defined above.
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testKeyThumbprint = "6nicxzh6WETQlrvdchkz-U3e3DOQZ4heJKU63rfqMqQ"
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// openssl ecparam -name secp256k1 -genkey -noout
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testKeyECPEM = `
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-----BEGIN EC PRIVATE KEY-----
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MHcCAQEEIK07hGLr0RwyUdYJ8wbIiBS55CjnkMD23DWr+ccnypWLoAoGCCqGSM49
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AwEHoUQDQgAE5lhEug5xK4xBDZ2nAbaxLtaLiv85bxJ7ePd1dkO23HThqIrvawF5
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QAaS/RNouybCiRhRjI3EaxLkQwgrCw0gqQ==
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-----END EC PRIVATE KEY-----
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`
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// openssl ecparam -name secp384r1 -genkey -noout
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testKeyEC384PEM = `
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-----BEGIN EC PRIVATE KEY-----
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MIGkAgEBBDAQ4lNtXRORWr1bgKR1CGysr9AJ9SyEk4jiVnlUWWUChmSNL+i9SLSD
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Oe/naPqXJ6CgBwYFK4EEACKhZANiAAQzKtj+Ms0vHoTX5dzv3/L5YMXOWuI5UKRj
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JigpahYCqXD2BA1j0E/2xt5vlPf+gm0PL+UHSQsCokGnIGuaHCsJAp3ry0gHQEke
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WYXapUUFdvaK1R2/2hn5O+eiQM8YzCg=
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-----END EC PRIVATE KEY-----
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`
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// openssl ecparam -name secp521r1 -genkey -noout
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testKeyEC512PEM = `
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-----BEGIN EC PRIVATE KEY-----
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MIHcAgEBBEIBSNZKFcWzXzB/aJClAb305ibalKgtDA7+70eEkdPt28/3LZMM935Z
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KqYHh/COcxuu3Kt8azRAUz3gyr4zZKhlKUSgBwYFK4EEACOhgYkDgYYABAHUNKbx
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7JwC7H6pa2sV0tERWhHhB3JmW+OP6SUgMWryvIKajlx73eS24dy4QPGrWO9/ABsD
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FqcRSkNVTXnIv6+0mAF25knqIBIg5Q8M9BnOu9GGAchcwt3O7RDHmqewnJJDrbjd
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GGnm6rb+NnWR9DIopM0nKNkToWoF/hzopxu4Ae/GsQ==
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-----END EC PRIVATE KEY-----
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`
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// 1. openssl ec -in key.pem -noout -text
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// 2. remove first byte, 04 (the header); the rest is X and Y
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// 3. convert each with: echo <val> | xxd -r -p | base64 -w 100 | tr -d '=' | tr '/+' '_-'
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testKeyECPubX = "5lhEug5xK4xBDZ2nAbaxLtaLiv85bxJ7ePd1dkO23HQ"
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testKeyECPubY = "4aiK72sBeUAGkv0TaLsmwokYUYyNxGsS5EMIKwsNIKk"
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testKeyEC384PubX = "MyrY_jLNLx6E1-Xc79_y-WDFzlriOVCkYyYoKWoWAqlw9gQNY9BP9sbeb5T3_oJt"
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testKeyEC384PubY = "Dy_lB0kLAqJBpyBrmhwrCQKd68tIB0BJHlmF2qVFBXb2itUdv9oZ-TvnokDPGMwo"
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testKeyEC512PubX = "AdQ0pvHsnALsfqlraxXS0RFaEeEHcmZb44_pJSAxavK8gpqOXHvd5Lbh3LhA8atY738AGwMWpxFKQ1VNeci_r7SY"
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testKeyEC512PubY = "AXbmSeogEiDlDwz0Gc670YYByFzC3c7tEMeap7CckkOtuN0Yaebqtv42dZH0MiikzSco2ROhagX-HOinG7gB78ax"
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// echo -n '{"crv":"P-256","kty":"EC","x":"<testKeyECPubX>","y":"<testKeyECPubY>"}' | \
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// openssl dgst -binary -sha256 | base64 | tr -d '=' | tr '/+' '_-'
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testKeyECThumbprint = "zedj-Bd1Zshp8KLePv2MB-lJ_Hagp7wAwdkA0NUTniU"
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)
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var (
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testKey *rsa.PrivateKey
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testKeyEC *ecdsa.PrivateKey
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testKeyEC384 *ecdsa.PrivateKey
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testKeyEC512 *ecdsa.PrivateKey
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)
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func init() {
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testKey = parseRSA(testKeyPEM, "testKeyPEM")
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testKeyEC = parseEC(testKeyECPEM, "testKeyECPEM")
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testKeyEC384 = parseEC(testKeyEC384PEM, "testKeyEC384PEM")
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testKeyEC512 = parseEC(testKeyEC512PEM, "testKeyEC512PEM")
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}
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func decodePEM(s, name string) []byte {
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d, _ := pem.Decode([]byte(s))
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if d == nil {
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panic("no block found in " + name)
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}
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return d.Bytes
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}
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func parseRSA(s, name string) *rsa.PrivateKey {
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b := decodePEM(s, name)
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k, err := x509.ParsePKCS1PrivateKey(b)
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if err != nil {
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panic(fmt.Sprintf("%s: %v", name, err))
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}
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return k
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}
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func parseEC(s, name string) *ecdsa.PrivateKey {
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b := decodePEM(s, name)
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k, err := x509.ParseECPrivateKey(b)
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if err != nil {
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panic(fmt.Sprintf("%s: %v", name, err))
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}
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return k
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}
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func TestJWSEncodeJSON(t *testing.T) {
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claims := struct{ Msg string }{"Hello JWS"}
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// JWS signed with testKey and "nonce" as the nonce value
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// JSON-serialized JWS fields are split for easier testing
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const (
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// {"alg":"RS256","jwk":{"e":"AQAB","kty":"RSA","n":"..."},"nonce":"nonce"}
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protected = "eyJhbGciOiJSUzI1NiIsImp3ayI6eyJlIjoiQVFBQiIsImt0eSI6" +
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"IlJTQSIsIm4iOiI0eGdaM2VSUGt3b1J2eTdxZVJVYm1NRGUwVi14" +
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"SDllV0xkdTBpaGVlTGxybUQybXFXWGZQOUllU0tBcGJuMzRnOFR1" +
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"QVM5ZzV6aHE4RUxRM2ttanItS1Y4NkdBTWdJNlZBY0dscTNRcnpw" +
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"VENmXzMwQWI3LXphd3JmUmFGT05hMUh3RXpQWTFLSG5HVmt4SmM4" +
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"NWdOa3dZSTlTWTJSSFh0dmxuM3pzNXdJVE5yZG9zcUVYZWFJa1ZZ" +
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"QkVoYmhOdTU0cHAza3hvNlR1V0xpOWU2cFhlV2V0RXdtbEJ3dFda" +
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"bFBvaWIyajNUeExCa3NLWmZveUZ5ZWszODBtSGdKQXVtUV9JMmZq" +
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"ajk4Xzk3bWszaWhPWTRBZ1ZkQ0RqMXpfR0NvWmtHNVJxN25iQ0d5" +
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"b3N5S1d5RFgwMFpzLW5OcVZob0xlSXZYQzRubldkSk1aNnJvZ3h5" +
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"UVEifSwibm9uY2UiOiJub25jZSJ9"
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// {"Msg":"Hello JWS"}
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payload = "eyJNc2ciOiJIZWxsbyBKV1MifQ"
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signature = "eAGUikStX_UxyiFhxSLMyuyBcIB80GeBkFROCpap2sW3EmkU_ggF" +
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"knaQzxrTfItICSAXsCLIquZ5BbrSWA_4vdEYrwWtdUj7NqFKjHRa" +
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"zpLHcoR7r1rEHvkoP1xj49lS5fc3Wjjq8JUhffkhGbWZ8ZVkgPdC" +
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"4tMBWiQDoth-x8jELP_3LYOB_ScUXi2mETBawLgOT2K8rA0Vbbmx" +
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"hWNlOWuUf-8hL5YX4IOEwsS8JK_TrTq5Zc9My0zHJmaieqDV0UlP" +
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"k0onFjPFkGm7MrPSgd0MqRG-4vSAg2O4hDo7rKv4n8POjjXlNQvM" +
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"9IPLr8qZ7usYBKhEGwX3yq_eicAwBw"
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)
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b, err := jwsEncodeJSON(claims, testKey, "nonce")
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if err != nil {
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t.Fatal(err)
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}
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var jws struct{ Protected, Payload, Signature string }
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if err := json.Unmarshal(b, &jws); err != nil {
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t.Fatal(err)
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}
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if jws.Protected != protected {
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t.Errorf("protected:\n%s\nwant:\n%s", jws.Protected, protected)
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}
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if jws.Payload != payload {
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t.Errorf("payload:\n%s\nwant:\n%s", jws.Payload, payload)
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}
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if jws.Signature != signature {
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t.Errorf("signature:\n%s\nwant:\n%s", jws.Signature, signature)
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}
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}
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func TestJWSEncodeJSONEC(t *testing.T) {
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tt := []struct {
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key *ecdsa.PrivateKey
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x, y string
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alg, crv string
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}{
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{testKeyEC, testKeyECPubX, testKeyECPubY, "ES256", "P-256"},
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{testKeyEC384, testKeyEC384PubX, testKeyEC384PubY, "ES384", "P-384"},
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{testKeyEC512, testKeyEC512PubX, testKeyEC512PubY, "ES512", "P-521"},
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}
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for i, test := range tt {
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claims := struct{ Msg string }{"Hello JWS"}
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b, err := jwsEncodeJSON(claims, test.key, "nonce")
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if err != nil {
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t.Errorf("%d: %v", i, err)
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continue
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}
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var jws struct{ Protected, Payload, Signature string }
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if err := json.Unmarshal(b, &jws); err != nil {
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t.Errorf("%d: %v", i, err)
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continue
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}
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b, err = base64.RawURLEncoding.DecodeString(jws.Protected)
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if err != nil {
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t.Errorf("%d: jws.Protected: %v", i, err)
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}
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var head struct {
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Alg string
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Nonce string
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JWK struct {
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Crv string
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Kty string
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X string
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Y string
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} `json:"jwk"`
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}
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if err := json.Unmarshal(b, &head); err != nil {
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t.Errorf("%d: jws.Protected: %v", i, err)
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}
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if head.Alg != test.alg {
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t.Errorf("%d: head.Alg = %q; want %q", i, head.Alg, test.alg)
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}
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if head.Nonce != "nonce" {
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t.Errorf("%d: head.Nonce = %q; want nonce", i, head.Nonce)
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}
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if head.JWK.Crv != test.crv {
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t.Errorf("%d: head.JWK.Crv = %q; want %q", i, head.JWK.Crv, test.crv)
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}
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if head.JWK.Kty != "EC" {
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t.Errorf("%d: head.JWK.Kty = %q; want EC", i, head.JWK.Kty)
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}
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if head.JWK.X != test.x {
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t.Errorf("%d: head.JWK.X = %q; want %q", i, head.JWK.X, test.x)
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}
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if head.JWK.Y != test.y {
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t.Errorf("%d: head.JWK.Y = %q; want %q", i, head.JWK.Y, test.y)
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}
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}
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}
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func TestJWKThumbprintRSA(t *testing.T) {
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// Key example from RFC 7638
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const base64N = "0vx7agoebGcQSuuPiLJXZptN9nndrQmbXEps2aiAFbWhM78LhWx4cbbfAAt" +
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"VT86zwu1RK7aPFFxuhDR1L6tSoc_BJECPebWKRXjBZCiFV4n3oknjhMstn6" +
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"4tZ_2W-5JsGY4Hc5n9yBXArwl93lqt7_RN5w6Cf0h4QyQ5v-65YGjQR0_FD" +
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"W2QvzqY368QQMicAtaSqzs8KJZgnYb9c7d0zgdAZHzu6qMQvRL5hajrn1n9" +
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"1CbOpbISD08qNLyrdkt-bFTWhAI4vMQFh6WeZu0fM4lFd2NcRwr3XPksINH" +
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"aQ-G_xBniIqbw0Ls1jF44-csFCur-kEgU8awapJzKnqDKgw"
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const base64E = "AQAB"
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const expected = "NzbLsXh8uDCcd-6MNwXF4W_7noWXFZAfHkxZsRGC9Xs"
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b, err := base64.RawURLEncoding.DecodeString(base64N)
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if err != nil {
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t.Fatalf("Error parsing example key N: %v", err)
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}
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n := new(big.Int).SetBytes(b)
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b, err = base64.RawURLEncoding.DecodeString(base64E)
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if err != nil {
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t.Fatalf("Error parsing example key E: %v", err)
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}
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e := new(big.Int).SetBytes(b)
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pub := &rsa.PublicKey{N: n, E: int(e.Uint64())}
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th, err := JWKThumbprint(pub)
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if err != nil {
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t.Error(err)
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}
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if th != expected {
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t.Errorf("thumbprint = %q; want %q", th, expected)
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}
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}
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func TestJWKThumbprintEC(t *testing.T) {
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// Key example from RFC 7520
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// expected was computed with
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// echo -n '{"crv":"P-521","kty":"EC","x":"<base64X>","y":"<base64Y>"}' | \
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// openssl dgst -binary -sha256 | \
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// base64 | \
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// tr -d '=' | tr '/+' '_-'
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const (
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base64X = "AHKZLLOsCOzz5cY97ewNUajB957y-C-U88c3v13nmGZx6sYl_oJXu9A5RkT" +
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"KqjqvjyekWF-7ytDyRXYgCF5cj0Kt"
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base64Y = "AdymlHvOiLxXkEhayXQnNCvDX4h9htZaCJN34kfmC6pV5OhQHiraVySsUda" +
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"QkAgDPrwQrJmbnX9cwlGfP-HqHZR1"
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expected = "dHri3SADZkrush5HU_50AoRhcKFryN-PI6jPBtPL55M"
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)
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b, err := base64.RawURLEncoding.DecodeString(base64X)
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if err != nil {
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t.Fatalf("Error parsing example key X: %v", err)
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}
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x := new(big.Int).SetBytes(b)
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b, err = base64.RawURLEncoding.DecodeString(base64Y)
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if err != nil {
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t.Fatalf("Error parsing example key Y: %v", err)
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}
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y := new(big.Int).SetBytes(b)
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pub := &ecdsa.PublicKey{Curve: elliptic.P521(), X: x, Y: y}
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th, err := JWKThumbprint(pub)
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if err != nil {
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t.Error(err)
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}
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if th != expected {
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t.Errorf("thumbprint = %q; want %q", th, expected)
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}
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}
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func TestJWKThumbprintErrUnsupportedKey(t *testing.T) {
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_, err := JWKThumbprint(struct{}{})
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if err != ErrUnsupportedKey {
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t.Errorf("err = %q; want %q", err, ErrUnsupportedKey)
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}
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}
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