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Moved generateSignature func into Pass class as _sign method

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Alexander Cerutti
2018-06-16 16:48:15 +02:00
parent e4d56bf7a1
commit b9c39cc938
1 changed files with 63 additions and 64 deletions
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127
index.js
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@@ -330,10 +330,10 @@ class Pass {
return bundleCallback(null);
});
}
], function _composeStream() {
], () => {
archive.append(JSON.stringify(manifest), { name: "manifest.json" });
let signatureBuffer = createSignature(manifest);
let signatureBuffer = this._sign(manifest);
archive.append(signatureBuffer, { name: "signature" });
let passStream = new stream.PassThrough();
@@ -349,6 +349,67 @@ class Pass {
});
});
}
/**
Generates the PKCS #7 cryptografic signature for the manifest file.
@method _sign
@params {String|Object} manifest - Manifest content.
@returns {Object} Promise
*/
_sign(manifest) {
let signature = forge.pkcs7.createSignedData();
if (typeof manifest === "object") {
signature.content = forge.util.createBuffer(JSON.stringify(manifest), "utf8")
} else if (typeof manifest === "string") {
signature.content = manifest;
} else {
throw new Error(`Manifest content must be a string or an object. Unable to accept manifest of type ${typeof manifest}`);
}
signature.addCertificate(Certificates.wwdr);
signature.addCertificate(Certificates.signerCert);
signature.addSigner({
key: Certificates.signerKey,
certificate: Certificates.signerCert,
digestAlgorithm: forge.pki.oids.sha1,
authenticatedAttributes: [{
type: forge.pki.oids.contentType,
value: forge.pki.oids.data
}, {
type: forge.pki.oids.messageDigest,
}, {
// the value is autogenerated
type: forge.pki.oids.signingTime,
}]
});
signature.sign();
/*
* Signing creates in contentInfo a JSON object nested BER/TLV (X.690 standard) structure.
* Each object represents a component of ASN.1 (Abstract Syntax Notation)
* For a more complete reference, refer to: https://en.wikipedia.org/wiki/X.690#BER_encoding
*
* signature.contentInfo.type => SEQUENCE OF (16)
* signature.contentInfo.value[0].type => OBJECT IDENTIFIER (6)
* signature.contantInfo.value[1].type => END OF CONTENT (EOC - 0)
*
* EOC are only present only in constructed indefinite-length methods
* Since `signature.contentInfo.value[1].value` contains an object whose value contains the content we passed,
* we have to pop the whole object away to avoid signature content invalidation.
*
*/
signature.contentInfo.value.pop();
// Converting the JSON Structure into a DER (which is a subset of BER), ASN.1 valid structure
// Returning the buffer of the signature
return Buffer.from(forge.asn1.toDer(signature.toAsn1()).getBytes(), 'binary');
}
}
@@ -404,68 +465,6 @@ function loadConfiguration(setup) {
});
}
/**
Generates the PKCS #7 cryptografic signature for the manifest file.
@function createSignature
@params {String} manifestPath - temp dir path created to keep the manifest file.
@returns {Object} Promise
*/
function createSignature(manifest) {
let signature = forge.pkcs7.createSignedData();
if (typeof manifest === "object") {
signature.content = forge.util.createBuffer(JSON.stringify(manifest), "utf8")
} else if (typeof manifest === "string") {
signature.content = manifest;
} else {
throw new Error(`Manifest content must be a string or an object. Unable to accept manifest of type ${typeof manifest}`);
}
signature.addCertificate(Certificates.wwdr);
signature.addCertificate(Certificates.signerCert);
signature.addSigner({
key: Certificates.signerKey,
certificate: Certificates.signerCert,
digestAlgorithm: forge.pki.oids.sha1,
authenticatedAttributes: [{
type: forge.pki.oids.contentType,
value: forge.pki.oids.data
}, {
type: forge.pki.oids.messageDigest,
}, {
// the value is autogenerated
type: forge.pki.oids.signingTime,
}]
});
signature.sign();
/*
* Signing creates in contentInfo a JSON object nested BER/TLV (X.690 standard) structure.
* Each object represents a component of ASN.1 (Abstract Syntax Notation)
* For a more complete reference, refer to: https://en.wikipedia.org/wiki/X.690#BER_encoding
*
* signature.contentInfo.type => SEQUENCE OF (16)
* signature.contentInfo.value[0].type => OBJECT IDENTIFIER (6)
* signature.contantInfo.value[1].type => END OF CONTENT (EOC - 0)
*
* EOC are only present only in constructed indefinite-length methods
* Since `signature.contentInfo.value[1].value` contains an object whose value contains the content we passed,
* we have to pop the whole object away to avoid signature content invalidation.
*
*/
signature.contentInfo.value.pop();
// Converting the JSON Structure into a DER (which is a subset of BER), ASN.1 valid structure
// Returning the buffer of the signature
return Buffer.from(forge.asn1.toDer(signature.toAsn1()).getBytes(), 'binary');
}
/**
Filters the options received in the query from http request into supported options
by Apple and this application, based on the functions that can be provided to keys