Examples with ArrayBuilder co.nstant.in.cbor.builder.ArrayBuilder used on opensource projects

Example 1 with ArrayBuilder

use of co.nstant.in.cbor.builder.ArrayBuilder in project identity-credential by google.

the class Util method coseSign1Sign.

@NonNull
static DataItem coseSign1Sign(@NonNull Signature s, @Nullable byte[] data, @Nullable byte[] detachedContent, @Nullable Collection<X509Certificate> certificateChain) {
    int dataLen = (data != null ? data.length : 0);
    int detachedContentLen = (detachedContent != null ? detachedContent.length : 0);
    if (dataLen > 0 && detachedContentLen > 0) {
        throw new IllegalArgumentException("data and detachedContent cannot both be non-empty");
    }
    int keySize;
    int alg;
    if (s.getAlgorithm().equals("SHA256withECDSA")) {
        keySize = 32;
        alg = COSE_ALG_ECDSA_256;
    } else if (s.getAlgorithm().equals("SHA384withECDSA")) {
        keySize = 48;
        alg = COSE_ALG_ECDSA_384;
    } else if (s.getAlgorithm().equals("SHA512withECDSA")) {
        keySize = 64;
        alg = COSE_ALG_ECDSA_512;
    } else {
        throw new IllegalArgumentException("Unsupported algorithm " + s.getAlgorithm());
    }
    CborBuilder protectedHeaders = new CborBuilder();
    MapBuilder<CborBuilder> protectedHeadersMap = protectedHeaders.addMap();
    protectedHeadersMap.put(COSE_LABEL_ALG, alg);
    byte[] protectedHeadersBytes = cborEncode(protectedHeaders.build().get(0));
    byte[] toBeSigned = coseBuildToBeSigned(protectedHeadersBytes, data, detachedContent);
    byte[] coseSignature = null;
    try {
        s.update(toBeSigned);
        byte[] derSignature = s.sign();
        coseSignature = signatureDerToCose(derSignature, keySize);
    } catch (SignatureException e) {
        throw new IllegalStateException("Error signing data", e);
    }
    CborBuilder builder = new CborBuilder();
    ArrayBuilder<CborBuilder> array = builder.addArray();
    array.add(protectedHeadersBytes);
    MapBuilder<ArrayBuilder<CborBuilder>> unprotectedHeaders = array.addMap();
    try {
        if (certificateChain != null && certificateChain.size() > 0) {
            if (certificateChain.size() == 1) {
                X509Certificate cert = certificateChain.iterator().next();
                unprotectedHeaders.put(COSE_LABEL_X5CHAIN, cert.getEncoded());
            } else {
                ArrayBuilder<MapBuilder<ArrayBuilder<CborBuilder>>> x5chainsArray = unprotectedHeaders.putArray(COSE_LABEL_X5CHAIN);
                for (X509Certificate cert : certificateChain) {
                    x5chainsArray.add(cert.getEncoded());
                }
            }
        }
    } catch (CertificateEncodingException e) {
        throw new IllegalStateException("Error encoding certificate", e);
    }
    if (data == null || data.length == 0) {
        array.add(new SimpleValue(SimpleValueType.NULL));
    } else {
        array.add(data);
    }
    array.add(coseSignature);
    return builder.build().get(0);
}

Example 2 with ArrayBuilder

use of co.nstant.in.cbor.builder.ArrayBuilder in project cose-lib by android.

the class Recipient method encode.

@Override
public DataItem encode() throws CborException {
    ArrayBuilder<CborBuilder> arrayBuilder = new CborBuilder().addArray();
    arrayBuilder.add(CoseUtils.serializeProtectedHeaders(getProtectedHeaders())).add(getUnprotectedHeaders()).add(getCiphertext());
    if (recipients != null && !recipients.isEmpty()) {
        ArrayBuilder<ArrayBuilder<CborBuilder>> recipientArrayBuilder = arrayBuilder.addArray();
        for (Recipient recipient : recipients) {
            recipientArrayBuilder.add(recipient.encode());
        }
        recipientArrayBuilder.end();
    }
    return arrayBuilder.end().build().get(0);
}

Example 3 with ArrayBuilder

use of co.nstant.in.cbor.builder.ArrayBuilder in project cose-lib by android.

the class SignMessage method encode.

@Override
public DataItem encode() throws CoseException, CborException {
    if (signatures == null || signatures.size() == 0) {
        throw new CoseException("Error while serializing SignMessage. Signatures not found.");
    }
    ArrayBuilder<CborBuilder> messageBuilder = new CborBuilder().addArray();
    messageBuilder.add(CoseUtils.serializeProtectedHeaders(getProtectedHeaders())).add(getUnprotectedHeaders()).add(message);
    ArrayBuilder<ArrayBuilder<CborBuilder>> signArrayBuilder = messageBuilder.addArray();
    for (Signature signature : signatures) {
        signArrayBuilder.add(signature.encode());
    }
    signArrayBuilder.end();
    return messageBuilder.end().build().get(0);
}

Example 4 with ArrayBuilder

use of co.nstant.in.cbor.builder.ArrayBuilder in project cose-lib by android.

the class EncryptMessage method encode.

@Override
public DataItem encode() throws CborException, CoseException {
    ArrayBuilder<CborBuilder> encryptArrayBuilder = new CborBuilder().addArray();
    encryptArrayBuilder.add(CoseUtils.serializeProtectedHeaders(getProtectedHeaders())).add(getUnprotectedHeaders()).add(ciphertext);
    ArrayBuilder<ArrayBuilder<CborBuilder>> recipientArrayBuilder = encryptArrayBuilder.addArray();
    if (recipients == null) {
        throw new CoseException("Error while serializing EncryptMessage. Recipient field not found.");
    }
    for (Recipient recipient : recipients) {
        recipientArrayBuilder.add(recipient.encode());
    }
    recipientArrayBuilder.end();
    return encryptArrayBuilder.end().build().get(0);
}

Example 5 with ArrayBuilder

use of co.nstant.in.cbor.builder.ArrayBuilder in project cose-lib by android.

the class MacMessage method encode.

@Override
public DataItem encode() throws CoseException, CborException {
    if (recipients == null) {
        throw new CoseException("Error while serializing MacMessage. Recipient field not found.");
    }
    ArrayBuilder<CborBuilder> macArrayBuilder = new CborBuilder().addArray();
    macArrayBuilder.add(CoseUtils.serializeProtectedHeaders(getProtectedHeaders())).add(getUnprotectedHeaders()).add(message).add(tag);
    ArrayBuilder<ArrayBuilder<CborBuilder>> recipientArrayBuilder = macArrayBuilder.addArray();
    for (Recipient recipient : recipients) {
        recipientArrayBuilder.add(recipient.encode());
    }
    recipientArrayBuilder.end();
    return macArrayBuilder.end().build().get(0);
}