Example usage for org.bouncycastle.bcpg.sig PreferredAlgorithms PreferredAlgorithms

Introduction

In this page you can find the example usage for org.bouncycastle.bcpg.sig PreferredAlgorithms PreferredAlgorithms.

Prototype

public PreferredAlgorithms(int type, boolean critical, int[] preferences) 

Source Link

Usage

From source file:org.sufficientlysecure.keychain.support.KeyringBuilder.java

License:Open Source License

private static SignaturePacket createSignaturePacket(BigInteger signature) {
    MPInteger[] signatureArray = new MPInteger[] { new MPInteger(signature) };

    int signatureType = PGPSignature.POSITIVE_CERTIFICATION;
    int keyAlgorithm = SignaturePacket.RSA_GENERAL;
    int hashAlgorithm = HashAlgorithmTags.SHA1;

    SignatureSubpacket[] hashedData = new SignatureSubpacket[] {
            new SignatureCreationTime(false, SIGNATURE_DATE),
            new KeyFlags(false, KeyFlags.CERTIFY_OTHER + KeyFlags.SIGN_DATA),
            new KeyExpirationTime(false, TimeUnit.DAYS.toSeconds(2)),
            new PreferredAlgorithms(SignatureSubpacketTags.PREFERRED_SYM_ALGS, false,
                    new int[] { SymmetricKeyAlgorithmTags.AES_256, SymmetricKeyAlgorithmTags.AES_192,
                            SymmetricKeyAlgorithmTags.AES_128, SymmetricKeyAlgorithmTags.CAST5,
                            SymmetricKeyAlgorithmTags.TRIPLE_DES }),
            new PreferredAlgorithms(SignatureSubpacketTags.PREFERRED_HASH_ALGS, false,
                    new int[] { HashAlgorithmTags.SHA256, HashAlgorithmTags.SHA1, HashAlgorithmTags.SHA384,
                            HashAlgorithmTags.SHA512, HashAlgorithmTags.SHA224 }),
            new PreferredAlgorithms(SignatureSubpacketTags.PREFERRED_COMP_ALGS, false,
                    new int[] { CompressionAlgorithmTags.ZLIB, CompressionAlgorithmTags.BZIP2,
                            CompressionAlgorithmTags.ZIP }),
            new Features(false, Features.FEATURE_MODIFICATION_DETECTION),
            createPreferencesSignatureSubpacket() };
    SignatureSubpacket[] unhashedData = new SignatureSubpacket[] {
            new IssuerKeyID(false, false, KEY_ID.toByteArray()) };
    byte[] fingerPrint = new BigInteger("522c", 16).toByteArray();

    return new SignaturePacket(signatureType, KEY_ID.longValue(), keyAlgorithm, hashAlgorithm, hashedData,
            unhashedData, fingerPrint, signatureArray);
}

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