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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.4. Note: this package includes the NTRU encryption algorithms.

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package org.bouncycastle.asn1.eac;

import org.bouncycastle.asn1.BERTags;
import org.bouncycastle.asn1.DERApplicationSpecific;

public class EACTags
{
    public static final int OBJECT_IDENTIFIER = 0x06;
    public static final int COUNTRY_CODE_NATIONAL_DATA = 0x41;
    public static final int ISSUER_IDENTIFICATION_NUMBER = 0x02; //0x42;
    public static final int CARD_SERVICE_DATA = 0x43;
    public static final int INITIAL_ACCESS_DATA = 0x44;
    public static final int CARD_ISSUER_DATA = 0x45;
    public static final int PRE_ISSUING_DATA = 0x46;
    public static final int CARD_CAPABILITIES = 0x47;
    public static final int STATUS_INFORMATION = 0x48;
    public static final int EXTENDED_HEADER_LIST = 0x4D;
    public static final int APPLICATION_IDENTIFIER = 0x4F;
    public static final int APPLICATION_LABEL = 0x50;
    public static final int FILE_REFERENCE = 0x51;
    public static final int COMMAND_TO_PERFORM = 0x52;
    public static final int DISCRETIONARY_DATA = 0x53;
    public static final int OFFSET_DATA_OBJECT = 0x54;
    public static final int TRACK1_APPLICATION = 0x56;
    public static final int TRACK2_APPLICATION = 0x57;
    public static final int TRACK3_APPLICATION = 0x58;
    public static final int CARD_EXPIRATION_DATA = 0x59;
    public static final int PRIMARY_ACCOUNT_NUMBER = 0x5A;// PAN
    public static final int NAME = 0x5B;
    public static final int TAG_LIST = 0x5C;
    public static final int HEADER_LIST = 0x5D;
    public static final int LOGIN_DATA = 0x5E;
    public static final int CARDHOLDER_NAME = 0x20; // 0x5F20;
    public static final int TRACK1_CARD = 0x5F21;
    public static final int TRACK2_CARD = 0x5F22;
    public static final int TRACK3_CARD = 0x5F23;
    public static final int APPLICATION_EXPIRATION_DATE = 0x24; // 0x5F24;
    public static final int APPLICATION_EFFECTIVE_DATE = 0x25; // 0x5F25;
    public static final int CARD_EFFECTIVE_DATE = 0x5F26;
    public static final int INTERCHANGE_CONTROL = 0x5F27;
    public static final int COUNTRY_CODE = 0x5F28;
    public static final int INTERCHANGE_PROFILE = 0x29; // 0x5F29;
    public static final int CURRENCY_CODE = 0x5F2A;
    public static final int DATE_OF_BIRTH = 0x5F2B;
    public static final int CARDHOLDER_NATIONALITY = 0x5F2C;
    public static final int LANGUAGE_PREFERENCES = 0x5F2D;
    public static final int CARDHOLDER_BIOMETRIC_DATA = 0x5F2E;
    public static final int PIN_USAGE_POLICY = 0x5F2F;
    public static final int SERVICE_CODE = 0x5F30;
    public static final int TRANSACTION_COUNTER = 0x5F32;
    public static final int TRANSACTION_DATE = 0x5F33;
    public static final int CARD_SEQUENCE_NUMBER = 0x5F34;
    public static final int SEX = 0x5F35;
    public static final int CURRENCY_EXPONENT = 0x5F36;
    public static final int STATIC_INTERNAL_AUTHENTIFICATION_ONE_STEP = 0x37; // 0x5F37;
    public static final int SIGNATURE = 0x5F37;
    public static final int STATIC_INTERNAL_AUTHENTIFICATION_FIRST_DATA = 0x5F38;
    public static final int STATIC_INTERNAL_AUTHENTIFICATION_SECOND_DATA = 0x5F39;
    public static final int DYNAMIC_INTERNAL_AUTHENTIFICATION = 0x5F3A;
    public static final int DYNAMIC_EXTERNAL_AUTHENTIFICATION = 0x5F3B;
    public static final int DYNAMIC_MUTUAL_AUTHENTIFICATION = 0x5F3C;
    public static final int CARDHOLDER_PORTRAIT_IMAGE = 0x5F40;
    public static final int ELEMENT_LIST = 0x5F41;
    public static final int ADDRESS = 0x5F42;
    public static final int CARDHOLDER_HANDWRITTEN_SIGNATURE = 0x5F43;
    public static final int APPLICATION_IMAGE = 0x5F44;
    public static final int DISPLAY_IMAGE = 0x5F45;
    public static final int TIMER = 0x5F46;
    public static final int MESSAGE_REFERENCE = 0x5F47;
    public static final int CARDHOLDER_PRIVATE_KEY = 0x5F48;
    public static final int CARDHOLDER_PUBLIC_KEY = 0x5F49;
    public static final int CERTIFICATION_AUTHORITY_PUBLIC_KEY = 0x5F4A;
    public static final int DEPRECATED = 0x5F4B;
    public static final int CERTIFICATE_HOLDER_AUTHORIZATION = 0x5F4C;// Not yet defined in iso7816. The allocation is requested
    public static final int INTEGRATED_CIRCUIT_MANUFACTURER_ID = 0x5F4D;
    public static final int CERTIFICATE_CONTENT = 0x5F4E;
    public static final int UNIFORM_RESOURCE_LOCATOR = 0x5F50;
    public static final int ANSWER_TO_RESET = 0x5F51;
    public static final int HISTORICAL_BYTES = 0x5F52;
    public static final int DIGITAL_SIGNATURE = 0x5F3D;
    public static final int APPLICATION_TEMPLATE = 0x61;
    public static final int FCP_TEMPLATE = 0x62;
    public static final int WRAPPER = 0x63;
    public static final int FMD_TEMPLATE = 0x64;
    public static final int CARDHOLDER_RELATIVE_DATA = 0x65;
    public static final int CARD_DATA = 0x66;
    public static final int AUTHENTIFICATION_DATA = 0x67;
    public static final int SPECIAL_USER_REQUIREMENTS = 0x68;
    public static final int LOGIN_TEMPLATE = 0x6A;
    public static final int QUALIFIED_NAME = 0x6B;
    public static final int CARDHOLDER_IMAGE_TEMPLATE = 0x6C;
    public static final int APPLICATION_IMAGE_TEMPLATE = 0x6D;
    public static final int APPLICATION_RELATED_DATA = 0x6E;
    public static final int FCI_TEMPLATE = 0x6F;
    public static final int DISCRETIONARY_DATA_OBJECTS = 0x73;
    public static final int COMPATIBLE_TAG_ALLOCATION_AUTHORITY = 0x78;
    public static final int COEXISTANT_TAG_ALLOCATION_AUTHORITY = 0x79;
    public static final int SECURITY_SUPPORT_TEMPLATE = 0x7A;
    public static final int SECURITY_ENVIRONMENT_TEMPLATE = 0x7B;
    public static final int DYNAMIC_AUTHENTIFICATION_TEMPLATE = 0x7C;
    public static final int SECURE_MESSAGING_TEMPLATE = 0x7D;
    public static final int NON_INTERINDUSTRY_DATA_OBJECT_NESTING_TEMPLATE = 0x7E;
    public static final int DISPLAY_CONTROL = 0x7F20;
    public static final int CARDHOLDER_CERTIFICATE = 0x21; // 0x7F21;
    public static final int CV_CERTIFICATE = 0x7F21;
    public static final int CARDHOLER_REQUIREMENTS_INCLUDED_FEATURES = 0x7F22;
    public static final int CARDHOLER_REQUIREMENTS_EXCLUDED_FEATURES = 0x7F23;
    public static final int BIOMETRIC_DATA_TEMPLATE = 0x7F2E;
    public static final int DIGITAL_SIGNATURE_BLOCK = 0x7F3D;
    public static final int CARDHOLDER_PRIVATE_KEY_TEMPLATE = 0x7F48;
    public static final int CARDHOLDER_PUBLIC_KEY_TEMPLATE = 0x49; // 0x7F49;
    public static final int CERTIFICATE_HOLDER_AUTHORIZATION_TEMPLATE = 0x4C; // 0x7F4C;
    public static final int CERTIFICATE_CONTENT_TEMPLATE = 0x4E; // 0x7F4E;
    public static final int CERTIFICATE_BODY = 0x4E; // 0x7F4E;
    public static final int BIOMETRIC_INFORMATION_TEMPLATE = 0x7F60;
    public static final int BIOMETRIC_INFORMATION_GROUP_TEMPLATE = 0x7F61;

    public static int getTag(int encodedTag)
    {
        /*
        int i;
        for (i = 24; i>=0; i-=8) {
            if (((0xFF<> i);
        }
        return 0;
        */
        return decodeTag(encodedTag);
    }

    public static int getTagNo(int tag)
    {
        int i;
        for (i = 24; i >= 0; i -= 8)
        {
            if (((0xFF << i) & tag) != 0)
            {
                return ((~(0xFF << i)) & tag);
            }
        }
        return 0;
    }

    public static int encodeTag(DERApplicationSpecific spec)
    {
        int retValue = BERTags.APPLICATION;
        boolean constructed = spec.isConstructed();
        if (constructed)
        {
            retValue |= BERTags.CONSTRUCTED;
        }

        int tag = spec.getApplicationTag();

        if (tag > 31)
        {
            retValue |= 0x1F;
            retValue <<= 8;

            int currentByte = tag & 0x7F;
            retValue |= currentByte;
            tag >>= 7;

            while (tag > 0)
            {
                retValue |= 0x80;
                retValue <<= 8;

                currentByte = tag & 0x7F;
                tag >>= 7;
            }
        }
        else
        {
            retValue |= tag;
        }

        return retValue;
    }

    public static int decodeTag(int tag)
    {
        int retValue = 0;
        boolean multiBytes = false;
        for (int i = 24; i >= 0; i -= 8)
        {
            int currentByte = tag >> i & 0xFF;
            if (currentByte == 0)
            {
                continue;
            }

            if (multiBytes)
            {
                retValue <<= 7;
                retValue |= currentByte & 0x7F;
            }
            else if ((currentByte & 0x1F) == 0x1F)
            {
                multiBytes = true;
            }
            else
            {
                return currentByte & 0x1F; // higher order bit are for DER.Constructed and type
            }
        }
        return retValue;
    }
}




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