cic-staff-client/docs/compodoc/interfaces/Signable.html

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<h3>File</h3>
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<code>src/app/_pgp/pgp-signer.ts</code>
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<h3 id="index">Index</h3>
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<h6><b>Methods</b></h6>
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<a href="#digest">digest</a>
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Methods
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<a name="digest"></a>
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digest
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<code>digest()</code>
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<div class="io-line">Defined in <a href="" data-line="7"
class="link-to-prism">src/app/_pgp/pgp-signer.ts:7</a></div>
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<b>Returns : </b> <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank" >string</a></code>
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<pre class="line-numbers compodoc-sourcecode"><code class="language-typescript">import {MutableKeyStore} from &#x27;@app/_pgp/pgp-key-store&#x27;;
import {LoggingService} from &#x27;@app/_services/logging.service&#x27;;
const openpgp &#x3D; require(&#x27;openpgp&#x27;);
interface Signable {
digest(): string;
}
type Signature &#x3D; {
engine: string
algo: string
data: string
digest: string;
};
interface Signer {
onsign(signature: Signature): void;
onverify(flag: boolean): void;
fingerprint(): string;
prepare(material: Signable): boolean;
verify(digest: string, signature: Signature): void;
sign(digest: string): Promise&lt;void&gt;;
}
class PGPSigner implements Signer {
engine &#x3D; &#x27;pgp&#x27;;
algo &#x3D; &#x27;sha256&#x27;;
dgst: string;
signature: Signature;
keyStore: MutableKeyStore;
onsign: (signature: Signature) &#x3D;&gt; void;
onverify: (flag: boolean) &#x3D;&gt; void;
loggingService: LoggingService;
constructor(keyStore: MutableKeyStore) {
this.keyStore &#x3D; keyStore;
this.onsign &#x3D; (signature: Signature) &#x3D;&gt; {};
this.onverify &#x3D; (flag: boolean) &#x3D;&gt; {};
}
public fingerprint(): string {
return this.keyStore.getFingerprint();
}
public prepare(material: Signable): boolean {
this.dgst &#x3D; material.digest();
return true;
}
public verify(digest: string, signature: Signature): void {
openpgp.signature.readArmored(signature.data).then((sig) &#x3D;&gt; {
const opts &#x3D; {
message: openpgp.cleartext.fromText(digest),
publicKeys: this.keyStore.getTrustedKeys(),
signature: sig,
};
openpgp.verify(opts).then((v) &#x3D;&gt; {
let i &#x3D; 0;
for (i &#x3D; 0; i &lt; v.signatures.length; i++) {
const s &#x3D; v.signatures[i];
if (s.valid) {
this.onverify(s);
return;
}
}
this.loggingService.sendErrorLevelMessage(&#x60;Checked ${i} signature(s) but none valid&#x60;, this, {error: &#x27;404 Not found!&#x27;});
this.onverify(false);
});
}).catch((e) &#x3D;&gt; {
this.loggingService.sendErrorLevelMessage(e.message, this, {error: e});
this.onverify(false);
});
}
public async sign(digest: string): Promise&lt;void&gt; {
const m &#x3D; openpgp.cleartext.fromText(digest);
const pk &#x3D; this.keyStore.getPrivateKey();
if (!pk.isDecrypted()) {
const password &#x3D; window.prompt(&#x27;password&#x27;);
await pk.decrypt(password);
}
const opts &#x3D; {
message: m,
privateKeys: [pk],
detached: true,
};
openpgp.sign(opts).then((s) &#x3D;&gt; {
this.signature &#x3D; {
engine: this.engine,
algo: this.algo,
data: s.signature,
// TODO: fix for browser later
digest,
};
this.onsign(this.signature);
}).catch((e) &#x3D;&gt; {
this.loggingService.sendErrorLevelMessage(e.message, this, {error: e});
this.onsign(undefined);
});
}
}
export {
Signable,
Signature,
Signer,
PGPSigner
};
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