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correctly handle cleartext headers with no hash specified

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This commit is contained in:
Sanjana Rajan 2018-02-14 17:07:39 +01:00
parent 8dd27722a3
commit 94b12e566b
2 changed files with 8 additions and 4 deletions
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11
src/cleartext.js
View File

@ -29,6 +29,7 @@ import armor from './encoding/armor';
import enums from './enums';
import packet from './packet';
import { Signature } from './signature';
import { getPreferredHashAlgo } from './key';
/**
* @class
@ -93,8 +94,8 @@ CleartextMessage.prototype.signDetached = async function(privateKeys) {
}
const signaturePacket = new packet.Signature();
signaturePacket.signatureType = enums.signature.text;
signaturePacket.hashAlgorithm = config.prefer_hash_algorithm;
signaturePacket.publicKeyAlgorithm = signingKeyPacket.algorithm;
signaturePacket.hashAlgorithm = getPreferredHashAlgo(privateKey);
if (!signingKeyPacket.isDecrypted) {
throw new Error('Private key is not decrypted.');
}
@ -164,8 +165,12 @@ CleartextMessage.prototype.getText = function() {
* @return {String} ASCII armor
*/
CleartextMessage.prototype.armor = function() {
let hashes = this.signature.packets.map(function(packet) {
return enums.read(enums.hash, packet.hashAlgorithm).toUpperCase();
});
hashes = hashes.filter(function(item, i, ar) { return ar.indexOf(item) === i; });
const body = {
hash: enums.read(enums.hash, config.prefer_hash_algorithm).toUpperCase(),
hash: hashes.join(),
text: this.text,
data: this.signature.packets.write()
};
@ -233,7 +238,7 @@ function verifyHeaders(headers, packetlist) {
if (!hashAlgos.length && !checkHashAlgos([enums.hash.md5])) {
throw new Error('If no "Hash" header in cleartext signed message, then only MD5 signatures allowed');
} else if (!checkHashAlgos(hashAlgos)) {
} else if (hashAlgos.length && !checkHashAlgos(hashAlgos)) {
throw new Error('Hash algorithm mismatch in armor header and signature');
}
}

1
src/message.js
View File

@ -404,7 +404,6 @@ Message.prototype.sign = async function(privateKeys=[], signature=null) {
}
const onePassSig = new packet.OnePassSignature();
onePassSig.type = signatureType;
//TODO get preferred hash algo from key signature
onePassSig.hashAlgorithm = getPreferredHashAlgo(privateKey);
onePassSig.publicKeyAlgorithm = signingKeyPacket.algorithm;
onePassSig.signingKeyId = signingKeyPacket.getKeyId();