-
Notifications
You must be signed in to change notification settings - Fork 274
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
10 changed files
with
833 additions
and
134 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,213 @@ | ||
import { SerializedMessages, AuthEncMessage, AuthEncMessages, PartyGpgKey, AuthMessage } from './types'; | ||
import * as pgp from 'openpgp'; | ||
|
||
/** | ||
* Detach signs a binary and encodes it in base64 | ||
* @param data binary to encode in base64 and sign | ||
* @param privateArmor private key to sign with | ||
*/ | ||
export async function detachSignData(data: Buffer, privateArmor: string): Promise<AuthMessage> { | ||
const message = await pgp.createMessage({ binary: data }); | ||
const privateKey = await pgp.readPrivateKey({ armoredKey: privateArmor }); | ||
const signature = await pgp.sign({ | ||
message, | ||
signingKeys: privateKey, | ||
format: 'armored', | ||
detached: true, | ||
config: { | ||
rejectCurves: new Set(), | ||
showVersion: false, | ||
showComment: false, | ||
}, | ||
}); | ||
return { | ||
message: data.toString('base64'), | ||
signature: signature, | ||
}; | ||
} | ||
|
||
/** | ||
* Encrypts and detach signs a binary | ||
* @param data binary to encrypt and sign | ||
* @param publicArmor public key to encrypt with | ||
* @param privateArmor private key to sign with | ||
*/ | ||
export async function encryptAndDetachSignData( | ||
data: Buffer, | ||
publicArmor: string, | ||
privateArmor: string | ||
): Promise<AuthEncMessage> { | ||
const message = await pgp.createMessage({ binary: data }); | ||
const publicKey = await pgp.readKey({ armoredKey: publicArmor }); | ||
const privateKey = await pgp.readPrivateKey({ armoredKey: privateArmor }); | ||
const encryptedMessage = await pgp.encrypt({ | ||
message, | ||
encryptionKeys: publicKey, | ||
format: 'armored', | ||
config: { | ||
rejectCurves: new Set(), | ||
showVersion: false, | ||
showComment: false, | ||
}, | ||
}); | ||
const signature = await pgp.sign({ | ||
message, | ||
signingKeys: privateKey, | ||
format: 'armored', | ||
detached: true, | ||
config: { | ||
rejectCurves: new Set(), | ||
showVersion: false, | ||
showComment: false, | ||
}, | ||
}); | ||
return { | ||
encryptedMessage: encryptedMessage, | ||
signature: signature, | ||
}; | ||
} | ||
|
||
/** | ||
* Decrypts and verifies signature on a binary | ||
* @param encryptedAndSignedMessage message to decrypt and verify | ||
* @param publicArmor public key to verify signature with | ||
* @param privateArmor private key to decrypt with | ||
*/ | ||
export async function decryptAndVerifySignedData( | ||
encryptedAndSignedMessage: AuthEncMessage, | ||
publicArmor: string, | ||
privateArmor: string | ||
): Promise<string> { | ||
const publicKey = await pgp.readKey({ armoredKey: publicArmor }); | ||
const privateKey = await pgp.readPrivateKey({ armoredKey: privateArmor }); | ||
const decryptedMessage = await pgp.decrypt({ | ||
message: await pgp.readMessage({ armoredMessage: encryptedAndSignedMessage.encryptedMessage }), | ||
decryptionKeys: [privateKey], | ||
config: { | ||
rejectCurves: new Set(), | ||
showVersion: false, | ||
showComment: false, | ||
}, | ||
format: 'binary', | ||
}); | ||
const verificationResult = await pgp.verify({ | ||
message: await pgp.createMessage({ binary: decryptedMessage.data }), | ||
signature: await pgp.readSignature({ armoredSignature: encryptedAndSignedMessage.signature }), | ||
verificationKeys: publicKey, | ||
}); | ||
await verificationResult.signatures[0].verified; | ||
return Buffer.from(decryptedMessage.data).toString('base64'); | ||
} | ||
|
||
/** | ||
* Verifies signature on a binary (message passed should be encoded in base64). | ||
* @param signedMessage message to verify | ||
* @param publicArmor public key to verify signature with | ||
*/ | ||
export async function verifySignedData(signedMessage: AuthMessage, publicArmor: string): Promise<boolean> { | ||
const publicKey = await pgp.readKey({ armoredKey: publicArmor }); | ||
const verificationResult = await pgp.verify({ | ||
message: await pgp.createMessage({ binary: Buffer.from(signedMessage.message, 'base64') }), | ||
signature: await pgp.readSignature({ armoredSignature: signedMessage.signature }), | ||
verificationKeys: publicKey, | ||
}); | ||
try { | ||
await verificationResult.signatures[0].verified; | ||
return true; | ||
} catch (e) { | ||
return false; | ||
} | ||
} | ||
|
||
/** | ||
* Decrypts and verifies p2p messages + verifies broadcast messages | ||
* @param messages message to decrypt and verify | ||
* @param pubVerificationGpgKeys public keys to verify signatures with | ||
* @param prvDecryptionGpgKeys private keys to decrypt with | ||
*/ | ||
export async function decryptAndVerifyIncomingMessages( | ||
messages: AuthEncMessages, | ||
pubVerificationGpgKeys: PartyGpgKey[], | ||
prvDecryptionGpgKeys: PartyGpgKey[] | ||
): Promise<SerializedMessages> { | ||
return { | ||
p2pMessages: await Promise.all( | ||
messages.p2pMessages.map(async (m) => { | ||
const pubGpgKey = pubVerificationGpgKeys.find((k) => k.partyId === m.from); | ||
const prvGpgKey = prvDecryptionGpgKeys.find((k) => k.partyId === m.to); | ||
if (!pubGpgKey) { | ||
throw Error(`No public key provided for sender with ID: ${m.from}`); | ||
} | ||
if (!prvGpgKey) { | ||
throw Error(`No private key provided for recepient with ID: ${m.to}`); | ||
} | ||
return { | ||
to: m.to, | ||
from: m.from, | ||
payload: await decryptAndVerifySignedData(m.payload, pubGpgKey.gpgKey, prvGpgKey.gpgKey), | ||
commitment: m.commitment, | ||
}; | ||
}) | ||
), | ||
broadcastMessages: await Promise.all( | ||
messages.broadcastMessages.map(async (m) => { | ||
const pubGpgKey = pubVerificationGpgKeys.find((k) => k.partyId === m.from); | ||
if (!pubGpgKey) { | ||
throw Error(`No public key provided for sender with ID: ${m.from}`); | ||
} | ||
if (!(await verifySignedData(m.payload, pubGpgKey.gpgKey))) { | ||
throw Error(`Failed to authenticate broadcast message from party: ${m.from}`); | ||
} | ||
return { | ||
from: m.from, | ||
payload: m.payload.message, | ||
}; | ||
}) | ||
), | ||
}; | ||
} | ||
|
||
/** | ||
* Encrypts and signs p2p messages + signs broadcast messages | ||
* @param messages messages to encrypt and sign | ||
* @param pubEncryptionGpgKey public keys to encrypt data to | ||
* @param prvAuthenticationGpgKey private keys to sign with | ||
*/ | ||
export async function encryptAndAuthOutgoingMessages( | ||
messages: SerializedMessages, | ||
pubEncryptionGpgKeys: PartyGpgKey[], | ||
prvAuthenticationGpgKeys: PartyGpgKey[] | ||
): Promise<AuthEncMessages> { | ||
return { | ||
p2pMessages: await Promise.all( | ||
messages.p2pMessages.map(async (m) => { | ||
const pubGpgKey = pubEncryptionGpgKeys.find((k) => k.partyId === m.to); | ||
const prvGpgKey = prvAuthenticationGpgKeys.find((k) => k.partyId === m.from); | ||
if (!pubGpgKey) { | ||
throw Error(`No public key provided for recipient with ID: ${m.to}`); | ||
} | ||
if (!prvGpgKey) { | ||
throw Error(`No private key provided for sender with ID: ${m.from}`); | ||
} | ||
return { | ||
to: m.to, | ||
from: m.from, | ||
payload: await encryptAndDetachSignData(Buffer.from(m.payload, 'base64'), pubGpgKey.gpgKey, prvGpgKey.gpgKey), | ||
commitment: m.commitment, | ||
}; | ||
}) | ||
), | ||
broadcastMessages: await Promise.all( | ||
messages.broadcastMessages.map(async (m) => { | ||
const prvGpgKey = prvAuthenticationGpgKeys.find((k) => k.partyId === m.from); | ||
if (!prvGpgKey) { | ||
throw Error(`No private key provided for sender with ID: ${m.from}`); | ||
} | ||
return { | ||
from: m.from, | ||
payload: await detachSignData(Buffer.from(m.payload, 'base64'), prvGpgKey.gpgKey), | ||
}; | ||
}) | ||
), | ||
}; | ||
} |
Oops, something went wrong.