node-rsa-es/src/formats/formats.js

Node.js RSA library

// var _ = require('../utils')._;
import pkcs1 from './pkcs1.js';
import pkcs8 from './pkcs8.js';
import components from './components.js';
import openssh from './openssh.js';
var EXPORT_FORMAT_ALIASES = {
        'private': 'pkcs1-private-pem',
        'private-der': 'pkcs1-private-der',
        'public': 'pkcs8-public-pem',
        'public-der': 'pkcs8-public-der',
    };
function formatParse(format) {
    format = format.split('-');
    var keyType = 'private';
    var keyOpt = {type: 'default'};

    for (var i = 1; i < format.length; i++) {
        if (format[i]) {
            switch (format[i]) {
                case 'public':
                    keyType = format[i];
                    break;
                case 'private':
                    keyType = format[i];
                    break;
                case 'pem':
                    keyOpt.type = format[i];
                    break;
                case 'der':
                    keyOpt.type = format[i];
                    break;
            }
        }
    }

    return {scheme: format[0], keyType: keyType, keyOpt: keyOpt};
}

var obj = {
    pkcs1,
    pkcs8,
    components,
    openssh
}
export default {
    pkcs1,
    pkcs8,
    components,
    openssh,

    isPrivateExport: function (format) {
        return obj[format] && typeof obj[format].privateExport === 'function';
    },

    isPrivateImport: function (format) {
        return obj[format] && typeof obj[format].privateImport === 'function';
    },

    isPublicExport: function (format) {
        return obj[format] && typeof obj[format].publicExport === 'function';
    },

    isPublicImport: function (format) {
        return obj[format] && typeof obj[format].publicImport === 'function';
    },

    detectAndImport: function (key, data, format) {
        if (format === undefined) {
            for (var scheme in obj) {
                if (typeof obj[scheme].autoImport === 'function' && obj[scheme].autoImport(key, data)) {
                    return true;
                }
            }
        } else if (format) {
            var fmt = formatParse(format);

            if (obj[fmt.scheme]) {
                if (fmt.keyType === 'private') {
                    obj[fmt.scheme].privateImport(key, data, fmt.keyOpt);
                } else {
                    obj[fmt.scheme].publicImport(key, data, fmt.keyOpt);
                }
            } else {
                throw Error('Unsupported key format');
            }
        }

        return false;
    },

    detectAndExport: function (key, format) {
        if (format) {
            var fmt = formatParse(format);

            if (obj[fmt.scheme]) {
                if (fmt.keyType === 'private') {
                    if (!key.isPrivate()) {
                        throw Error("This is not private key");
                    }
                    return obj[fmt.scheme].privateExport(key, fmt.keyOpt);
                } else {
                    if (!key.isPublic()) {
                        throw Error("This is not public key");
                    }
                    return obj[fmt.scheme].publicExport(key, fmt.keyOpt);
                }
            } else {
                throw Error('Unsupported key format');
            }
        }
    }
};