Example usage for org.bouncycastle.bcpg PublicKeyAlgorithmTags DSA

Introduction

In this page you can find the example usage for org.bouncycastle.bcpg PublicKeyAlgorithmTags DSA.

Prototype

int DSA

To view the source code for org.bouncycastle.bcpg PublicKeyAlgorithmTags DSA.

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Usage

From source file:com.google.e2e.bcdriver.KeyChecker.java

License:Apache License

private static final boolean canSign(int algorithm) {
    return (algorithm == PublicKeyAlgorithmTags.RSA_GENERAL) || (algorithm == PublicKeyAlgorithmTags.RSA_SIGN)
            || (algorithm == PublicKeyAlgorithmTags.DSA) || (algorithm == PublicKeyAlgorithmTags.ECDSA);
}

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From source file:divconq.pgp.PGPUtil.java

License:Open Source License

public static String getSignatureName(int keyAlgorithm, int hashAlgorithm) throws PGPException {
    String encAlg;/*from  ww w  .j av a  2 s  .co m*/

    switch (keyAlgorithm) {
    case PublicKeyAlgorithmTags.RSA_GENERAL:
    case PublicKeyAlgorithmTags.RSA_SIGN:
        encAlg = "RSA";
        break;
    case PublicKeyAlgorithmTags.DSA:
        encAlg = "DSA";
        break;
    case PublicKeyAlgorithmTags.ELGAMAL_ENCRYPT: // in some malformed cases.
    case PublicKeyAlgorithmTags.ELGAMAL_GENERAL:
        encAlg = "ElGamal";
        break;
    default:
        throw new PGPException("unknown algorithm tag in signature:" + keyAlgorithm);
    }

    return getDigestName(hashAlgorithm) + "with" + encAlg;
}

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From source file:org.sufficientlysecure.keychain.pgp.PgpSecurityConstants.java

License:Open Source License

public static boolean isSecureKey(CanonicalizedPublicKey key) {
    switch (key.getAlgorithm()) {
    case PublicKeyAlgorithmTags.RSA_GENERAL: {
        return (key.getBitStrength() >= 2048);
    }//from   ww  w. j a v a 2  s.  c  om
    // RSA_ENCRYPT, RSA_SIGN: deprecated in RFC 4880, use RSA_GENERAL with key flags
    case PublicKeyAlgorithmTags.ELGAMAL_ENCRYPT: {
        return (key.getBitStrength() >= 2048);
    }
    case PublicKeyAlgorithmTags.DSA: {
        return (key.getBitStrength() >= 2048);
    }
    case PublicKeyAlgorithmTags.ECDH:
    case PublicKeyAlgorithmTags.ECDSA: {
        return PgpSecurityConstants.sCurveWhitelist.contains(key.getCurveOid());
    }
    // ELGAMAL_GENERAL: deprecated in RFC 4880, use ELGAMAL_ENCRYPT
    // DIFFIE_HELLMAN: unsure
    default:
        return false;
    }
}

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From source file:org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils.java

License:Open Source License

/**
 * Based on <a href="http://tools.ietf.org/html/rfc2440#section-9.1">OpenPGP Message Format</a>
 *///from  www  . j  a va  2s  .  c o  m
public static String getAlgorithmInfo(Context context, int algorithm, Integer keySize, String oid) {
    String algorithmStr;

    switch (algorithm) {
    case PublicKeyAlgorithmTags.RSA_GENERAL:
    case PublicKeyAlgorithmTags.RSA_ENCRYPT:
    case PublicKeyAlgorithmTags.RSA_SIGN: {
        algorithmStr = "RSA";
        break;
    }
    case PublicKeyAlgorithmTags.DSA: {
        algorithmStr = "DSA";
        break;
    }

    case PublicKeyAlgorithmTags.ELGAMAL_ENCRYPT:
    case PublicKeyAlgorithmTags.ELGAMAL_GENERAL: {
        algorithmStr = "ElGamal";
        break;
    }

    case PublicKeyAlgorithmTags.ECDSA: {
        if (oid == null) {
            return "ECDSA";
        }
        String oidName = KeyFormattingUtils.getCurveInfo(context, oid);
        return "ECDSA (" + oidName + ")";
    }
    case PublicKeyAlgorithmTags.ECDH: {
        if (oid == null) {
            return "ECDH";
        }
        String oidName = KeyFormattingUtils.getCurveInfo(context, oid);
        return "ECDH (" + oidName + ")";
    }

    default: {
        if (context != null) {
            algorithmStr = context.getResources().getString(R.string.unknown_algorithm);
        } else {
            algorithmStr = "unknown";
        }
        break;
    }
    }
    if (keySize != null && keySize > 0)
        return algorithmStr + ", " + keySize + " bit";
    else
        return algorithmStr;
}

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