tink-crypto/esm2015/signature/signature_key_templates.js

A multi-language, cross-platform library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

/**
 * @license
 * Copyright 2020 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { PbEcdsaKeyFormat, PbEcdsaParams, PbEcdsaSignatureEncoding, PbEllipticCurveType, PbHashType, PbKeyTemplate, PbOutputPrefixType } from '../internal/proto';
import * as SignatureConfig from './signature_config';
/**
 * Pre-generated KeyTemplates for keys for digital signatures.
 *
 * One can use these templates to generate new Keyset with
 * KeysetHandle.generateNew method. To generate a new keyset that contains a
 * single EcdsaKey, one can do:
 *
 * SignatureConfig.Register();
 * KeysetHandle handle = KeysetHandle.generateNew(
 *     SignatureKeyTemplates.ecdsaP256());
 *
 * @final
 */
export class SignatureKeyTemplates {
    /**
     * Returns a KeyTemplate that generates new instances of
     * EcdsaPrivateKey with the following parameters:
     *  Hash function: SHA256
     *  Curve: NIST P-256
     *  Signature encoding: DER (this is the encoding that Java uses)
     *  OutputPrefixType: TINK
     *
     */
    static ecdsaP256() {
        return createEcdsaKeyTemplate(
        /* curveType = */
        PbEllipticCurveType.NIST_P256, 
        /* hashType = */
        PbHashType.SHA256, 
        /* encoding = */
        PbEcdsaSignatureEncoding.DER, 
        /* outputPrefixType = */
        PbOutputPrefixType.TINK);
    }
    /**
     * Returns a KeyTemplate that generates new instances of
     * EcdsaPrivateKey with the following parameters:
     *  Hash function: SHA512
     *  Curve: NIST P-384
     *  Signature encoding: DER (this is the encoding that Java uses)
     *  OutputPrefixType: TINK
     *
     */
    static ecdsaP384() {
        return createEcdsaKeyTemplate(
        /* curveType = */
        PbEllipticCurveType.NIST_P384, 
        /* hashType = */
        PbHashType.SHA512, 
        /* encoding = */
        PbEcdsaSignatureEncoding.DER, 
        /* outputPrefixType = */
        PbOutputPrefixType.TINK);
    }
    /**
     * Returns a KeyTemplate that generates new instances of
     * EcdsaPrivateKey with the following parameters:
     *  Hash function: SHA512
     *  Curve: NIST P-521
     *  Signature encoding: DER (this is the encoding that Java uses).
     *  OutputPrefixType: TINK
     *
     */
    static ecdsaP521() {
        return createEcdsaKeyTemplate(
        /* curveType = */
        PbEllipticCurveType.NIST_P521, 
        /* hashType = */
        PbHashType.SHA512, 
        /* encoding = */
        PbEcdsaSignatureEncoding.DER, 
        /* outputPrefixType = */
        PbOutputPrefixType.TINK);
    }
    /**
     * Returns a KeyTemplate that generates new instances of
     * EcdsaPrivateKey with the following parameters:
     *  Hash function: SHA256
     *  Curve: NIST P-256
     *  Signature encoding: IEEE_P1363 (this is the encoding that WebCrypto uses)
     *  OutputPrefixType: TINK
     *
     */
    static ecdsaP256IeeeEncoding() {
        return createEcdsaKeyTemplate(
        /* curveType = */
        PbEllipticCurveType.NIST_P256, 
        /* hashType = */
        PbHashType.SHA256, 
        /* encoding = */
        PbEcdsaSignatureEncoding.IEEE_P1363, 
        /* outputPrefixType = */
        PbOutputPrefixType.TINK);
    }
    /**
     * Returns a KeyTemplate that generates new instances of
     * EcdsaPrivateKey with the following parameters:
     *  Hash function: SHA512
     *  Curve: NIST P-384
     *  Signature encoding: IEEE_P1363 (this is the encoding that WebCrypto uses)
     *  OutputPrefixType: TINK
     *
     */
    static ecdsaP384IeeeEncoding() {
        return createEcdsaKeyTemplate(
        /* curveType = */
        PbEllipticCurveType.NIST_P384, 
        /* hashType = */
        PbHashType.SHA512, 
        /* encoding = */
        PbEcdsaSignatureEncoding.IEEE_P1363, 
        /* outputPrefixType = */
        PbOutputPrefixType.TINK);
    }
    /**
     * Returns a KeyTemplate that generates new instances of
     * EcdsaPrivateKey with the following parameters:
     *  Hash function: SHA512
     *  Curve: NIST P-521
     *  Signature encoding: IEEE_P1363 (this is the encoding that WebCrypto uses)
     *  OutputPrefixType: TINK
     *
     */
    static ecdsaP521IeeeEncoding() {
        return createEcdsaKeyTemplate(
        /* curveType = */
        PbEllipticCurveType.NIST_P521, 
        /* hashType = */
        PbHashType.SHA512, 
        /* encoding = */
        PbEcdsaSignatureEncoding.IEEE_P1363, 
        /* outputPrefixType = */
        PbOutputPrefixType.TINK);
    }
}
function createEcdsaKeyTemplate(curveType, hashType, encoding, outputPrefixType) {
    // key format
    const keyFormat = new PbEcdsaKeyFormat();
    const params = (new PbEcdsaParams())
        .setCurve(curveType)
        .setHashType(hashType)
        .setEncoding(encoding);
    keyFormat.setParams(params);
    // key template
    const keyTemplate = (new PbKeyTemplate())
        .setTypeUrl(SignatureConfig.ECDSA_PRIVATE_KEY_TYPE)
        .setValue(keyFormat.serializeBinary())
        .setOutputPrefixType(outputPrefixType);
    return keyTemplate;
}
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To generate a new keyset that contains a\n * single EcdsaKey, one can do:\n *\n * SignatureConfig.Register();\n * KeysetHandle handle = KeysetHandle.generateNew(\n *     SignatureKeyTemplates.ecdsaP256());\n *\n * @final\n */\nexport class SignatureKeyTemplates {\n  /**\n   * Returns a KeyTemplate that generates new instances of\n   * EcdsaPrivateKey with the following parameters:\n   *  Hash function: SHA256\n   *  Curve: NIST P-256\n   *  Signature encoding: DER (this is the encoding that Java uses)\n   *  OutputPrefixType: TINK\n   *\n   */\n  static ecdsaP256(): PbKeyTemplate {\n    return createEcdsaKeyTemplate(\n        /* curveType = */\n        PbEllipticCurveType.NIST_P256,\n        /* hashType = */\n        PbHashType.SHA256,\n        /* encoding = */\n        PbEcdsaSignatureEncoding.DER,\n        /* outputPrefixType = */\n        PbOutputPrefixType.TINK);\n  }\n\n  /**\n   * Returns a KeyTemplate that generates new instances of\n   * EcdsaPrivateKey with the following parameters:\n   *  Hash function: SHA512\n   *  Curve: NIST P-384\n   *  Signature encoding: DER (this is the encoding that Java uses)\n   *  OutputPrefixType: TINK\n   *\n   */\n  static ecdsaP384(): PbKeyTemplate {\n    return createEcdsaKeyTemplate(\n        /* curveType = */\n        PbEllipticCurveType.NIST_P384,\n        /* hashType = */\n        PbHashType.SHA512,\n        /* encoding = */\n        PbEcdsaSignatureEncoding.DER,\n        /* outputPrefixType = */\n        PbOutputPrefixType.TINK);\n  }\n\n  /**\n   * Returns a KeyTemplate that generates new instances of\n   * EcdsaPrivateKey with the following parameters:\n   *  Hash function: SHA512\n   *  Curve: NIST P-521\n   *  Signature encoding: DER (this is the encoding that Java uses).\n   *  OutputPrefixType: TINK\n   *\n   */\n  static ecdsaP521(): PbKeyTemplate {\n    return createEcdsaKeyTemplate(\n        /* curveType = */\n        PbEllipticCurveType.NIST_P521,\n        /* hashType = */\n        PbHashType.SHA512,\n        /* encoding = */\n        PbEcdsaSignatureEncoding.DER,\n        /* outputPrefixType = */\n        PbOutputPrefixType.TINK);\n  }\n\n  /**\n   * Returns a KeyTemplate that generates new instances of\n   * EcdsaPrivateKey with the following parameters:\n   *  Hash function: SHA256\n   *  Curve: NIST P-256\n   *  Signature encoding: IEEE_P1363 (this is the encoding that WebCrypto uses)\n   *  OutputPrefixType: TINK\n   *\n   */\n  static ecdsaP256IeeeEncoding(): PbKeyTemplate {\n    return createEcdsaKeyTemplate(\n        /* curveType = */\n        PbEllipticCurveType.NIST_P256,\n        /* hashType = */\n        PbHashType.SHA256,\n        /* encoding = */\n        PbEcdsaSignatureEncoding.IEEE_P1363,\n        /* outputPrefixType = */\n        PbOutputPrefixType.TINK);\n  }\n\n  /**\n   * Returns a KeyTemplate that generates new instances of\n   * EcdsaPrivateKey with the following parameters:\n   *  Hash function: SHA512\n   *  Curve: NIST P-384\n   *  Signature encoding: IEEE_P1363 (this is the encoding that WebCrypto uses)\n   *  OutputPrefixType: TINK\n   *\n   */\n  static ecdsaP384IeeeEncoding(): PbKeyTemplate {\n    return createEcdsaKeyTemplate(\n        /* curveType = */\n        PbEllipticCurveType.NIST_P384,\n        /* hashType = */\n        PbHashType.SHA512,\n        /* encoding = */\n        PbEcdsaSignatureEncoding.IEEE_P1363,\n        /* outputPrefixType = */\n        PbOutputPrefixType.TINK);\n  }\n\n  /**\n   * Returns a KeyTemplate that generates new instances of\n   * EcdsaPrivateKey with the following parameters:\n   *  Hash function: SHA512\n   *  Curve: NIST P-521\n   *  Signature encoding: IEEE_P1363 (this is the encoding that WebCrypto uses)\n   *  OutputPrefixType: TINK\n   *\n   */\n  static ecdsaP521IeeeEncoding(): PbKeyTemplate {\n    return createEcdsaKeyTemplate(\n        /* curveType = */\n        PbEllipticCurveType.NIST_P521,\n        /* hashType = */\n        PbHashType.SHA512,\n        /* encoding = */\n        PbEcdsaSignatureEncoding.IEEE_P1363,\n        /* outputPrefixType = */\n        PbOutputPrefixType.TINK);\n  }\n}\n\nfunction createEcdsaKeyTemplate(\n    curveType: PbEllipticCurveType, hashType: PbHashType,\n    encoding: PbEcdsaSignatureEncoding,\n    outputPrefixType: PbOutputPrefixType): PbKeyTemplate {\n  // key format\n  const keyFormat = new PbEcdsaKeyFormat();\n  const params = (new PbEcdsaParams())\n                     .setCurve(curveType)\n                     .setHashType(hashType)\n                     .setEncoding(encoding);\n  keyFormat.setParams(params);\n\n  // key template\n  const keyTemplate = (new PbKeyTemplate())\n                          .setTypeUrl(SignatureConfig.ECDSA_PRIVATE_KEY_TYPE)\n                          .setValue(keyFormat.serializeBinary())\n                          .setOutputPrefixType(outputPrefixType);\n  return keyTemplate;\n}\n"]}