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Commit | Line | Data |
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41fb13c3 C |
1 | import { compare, genSalt, hash } from 'bcrypt' |
2 | import { createSign, createVerify } from 'crypto' | |
41f2ebae | 3 | import { Request } from 'express' |
41fb13c3 | 4 | import { cloneDeep } from 'lodash' |
f304a158 | 5 | import { sha256 } from '@shared/extra-utils' |
74dc3bca | 6 | import { BCRYPT_SALT_SIZE, HTTP_SIGNATURE, PRIVATE_RSA_KEY_SIZE } from '../initializers/constants' |
41fb13c3 | 7 | import { MActor } from '../types/models' |
5d7cb63e | 8 | import { generateRSAKeyPairPromise, promisify1, promisify2 } from './core-utils' |
ad513607 | 9 | import { jsonld } from './custom-jsonld-signature' |
8d468a16 | 10 | import { logger } from './logger' |
8d2be0ed | 11 | |
41fb13c3 C |
12 | const bcryptComparePromise = promisify2<any, string, boolean>(compare) |
13 | const bcryptGenSaltPromise = promisify1<number, string>(genSalt) | |
14 | const bcryptHashPromise = promisify2<any, string | number, string>(hash) | |
9f10b292 | 15 | |
5842a854 | 16 | const httpSignature = require('@peertube/http-signature') |
41f2ebae | 17 | |
5d7cb63e | 18 | function createPrivateAndPublicKeys () { |
e4f97bab | 19 | logger.info('Generating a RSA key...') |
bdfbd4f1 | 20 | |
5d7cb63e | 21 | return generateRSAKeyPairPromise(PRIVATE_RSA_KEY_SIZE) |
9f10b292 C |
22 | } |
23 | ||
41f2ebae C |
24 | // User password checks |
25 | ||
26 | function comparePassword (plainPassword: string, hashPassword: string) { | |
2166c058 C |
27 | if (!plainPassword) return Promise.resolve(false) |
28 | ||
41f2ebae C |
29 | return bcryptComparePromise(plainPassword, hashPassword) |
30 | } | |
31 | ||
32 | async function cryptPassword (password: string) { | |
33 | const salt = await bcryptGenSaltPromise(BCRYPT_SALT_SIZE) | |
34 | ||
35 | return bcryptHashPromise(password, salt) | |
36 | } | |
37 | ||
38 | // HTTP Signature | |
39 | ||
df66d815 C |
40 | function isHTTPSignatureDigestValid (rawBody: Buffer, req: Request): boolean { |
41 | if (req.headers[HTTP_SIGNATURE.HEADER_NAME] && req.headers['digest']) { | |
42 | return buildDigest(rawBody.toString()) === req.headers['digest'] | |
43 | } | |
44 | ||
45 | return true | |
46 | } | |
47 | ||
453e83ea | 48 | function isHTTPSignatureVerified (httpSignatureParsed: any, actor: MActor): boolean { |
41f2ebae C |
49 | return httpSignature.verifySignature(httpSignatureParsed, actor.publicKey) === true |
50 | } | |
51 | ||
df66d815 | 52 | function parseHTTPSignature (req: Request, clockSkew?: number) { |
e08ec7a7 C |
53 | const requiredHeaders = req.method === 'POST' |
54 | ? [ '(request-target)', 'host', 'digest' ] | |
55 | : [ '(request-target)', 'host' ] | |
797d05bd | 56 | |
e08ec7a7 C |
57 | const parsed = httpSignature.parse(req, { clockSkew, headers: requiredHeaders }) |
58 | ||
59 | const parsedHeaders = parsed.params.headers | |
60 | if (!parsedHeaders.includes('date') && !parsedHeaders.includes('(created)')) { | |
61 | throw new Error(`date or (created) must be included in signature`) | |
62 | } | |
63 | ||
64 | return parsed | |
41f2ebae C |
65 | } |
66 | ||
67 | // JSONLD | |
68 | ||
ad513607 | 69 | function isJsonLDSignatureVerified (fromActor: MActor, signedDocument: any): Promise<boolean> { |
df66d815 | 70 | if (signedDocument.signature.type === 'RsaSignature2017') { |
ad513607 | 71 | return isJsonLDRSA2017Verified(fromActor, signedDocument) |
df66d815 C |
72 | } |
73 | ||
ad513607 | 74 | logger.warn('Unknown JSON LD signature %s.', signedDocument.signature.type, signedDocument) |
bdfbd4f1 | 75 | |
ad513607 | 76 | return Promise.resolve(false) |
26d7d31b C |
77 | } |
78 | ||
df66d815 | 79 | // Backward compatibility with "other" implementations |
453e83ea | 80 | async function isJsonLDRSA2017Verified (fromActor: MActor, signedDocument: any) { |
df66d815 | 81 | const [ documentHash, optionsHash ] = await Promise.all([ |
ad513607 C |
82 | createDocWithoutSignatureHash(signedDocument), |
83 | createSignatureHash(signedDocument.signature) | |
df66d815 C |
84 | ]) |
85 | ||
86 | const toVerify = optionsHash + documentHash | |
87 | ||
88 | const verify = createVerify('RSA-SHA256') | |
89 | verify.update(toVerify, 'utf8') | |
90 | ||
91 | return verify.verify(fromActor.publicKey, signedDocument.signature.signatureValue, 'base64') | |
92 | } | |
93 | ||
db4b15f2 | 94 | async function signJsonLDObject <T> (byActor: MActor, data: T) { |
ad513607 C |
95 | const signature = { |
96 | type: 'RsaSignature2017', | |
ce33ee01 | 97 | creator: byActor.url, |
ad513607 | 98 | created: new Date().toISOString() |
f5028693 | 99 | } |
9f10b292 | 100 | |
ad513607 C |
101 | const [ documentHash, optionsHash ] = await Promise.all([ |
102 | createDocWithoutSignatureHash(data), | |
103 | createSignatureHash(signature) | |
104 | ]) | |
105 | ||
106 | const toSign = optionsHash + documentHash | |
107 | ||
108 | const sign = createSign('RSA-SHA256') | |
109 | sign.update(toSign, 'utf8') | |
110 | ||
111 | const signatureValue = sign.sign(byActor.privateKey, 'base64') | |
112 | Object.assign(signature, { signatureValue }) | |
113 | ||
114 | return Object.assign(data, { signature }) | |
e4f97bab C |
115 | } |
116 | ||
8dc8a34e C |
117 | function buildDigest (body: any) { |
118 | const rawBody = typeof body === 'string' ? body : JSON.stringify(body) | |
119 | ||
120 | return 'SHA-256=' + sha256(rawBody, 'base64') | |
121 | } | |
122 | ||
9f10b292 | 123 | // --------------------------------------------------------------------------- |
dac0a531 | 124 | |
65fcc311 | 125 | export { |
df66d815 | 126 | isHTTPSignatureDigestValid, |
41f2ebae C |
127 | parseHTTPSignature, |
128 | isHTTPSignatureVerified, | |
8dc8a34e | 129 | buildDigest, |
41f2ebae | 130 | isJsonLDSignatureVerified, |
65fcc311 | 131 | comparePassword, |
e4f97bab | 132 | createPrivateAndPublicKeys, |
65fcc311 | 133 | cryptPassword, |
41f2ebae | 134 | signJsonLDObject |
9f10b292 | 135 | } |
8d2be0ed C |
136 | |
137 | // --------------------------------------------------------------------------- | |
ad513607 | 138 | |
41fb13c3 | 139 | function hashObject (obj: any): Promise<any> { |
edacb640 C |
140 | return jsonld.promises.normalize(obj, { |
141 | safe: false, | |
142 | algorithm: 'URDNA2015', | |
143 | format: 'application/n-quads' | |
144 | }).then(res => sha256(res)) | |
ad513607 C |
145 | } |
146 | ||
147 | function createSignatureHash (signature: any) { | |
148 | const signatureCopy = cloneDeep(signature) | |
149 | Object.assign(signatureCopy, { | |
150 | '@context': [ | |
151 | 'https://w3id.org/security/v1', | |
152 | { RsaSignature2017: 'https://w3id.org/security#RsaSignature2017' } | |
153 | ] | |
154 | }) | |
155 | ||
156 | delete signatureCopy.type | |
157 | delete signatureCopy.id | |
158 | delete signatureCopy.signatureValue | |
159 | ||
41fb13c3 | 160 | return hashObject(signatureCopy) |
ad513607 C |
161 | } |
162 | ||
163 | function createDocWithoutSignatureHash (doc: any) { | |
164 | const docWithoutSignature = cloneDeep(doc) | |
165 | delete docWithoutSignature.signature | |
166 | ||
41fb13c3 | 167 | return hashObject(docWithoutSignature) |
ad513607 | 168 | } |