java.security.spec.MGF1ParameterSpec#SHA224()源码实例Demo

下面列出了java.security.spec.MGF1ParameterSpec#SHA224() 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： openjdk-jdk8u 文件： PSSParameters.java

@Override
protected void engineInit(byte[] encoded) throws IOException {
    // first initialize with the DEFAULT values before
    // retrieving from the encoding bytes
    String mdName = DEFAULT.getDigestAlgorithm();
    MGF1ParameterSpec mgfSpec = (MGF1ParameterSpec) DEFAULT.getMGFParameters();
    int saltLength = DEFAULT.getSaltLength();
    int trailerField = DEFAULT.getTrailerField();

    DerInputStream der = new DerInputStream(encoded);
    DerValue[] datum = der.getSequence(4);

    for (DerValue d : datum) {
        if (d.isContextSpecific((byte) 0x00)) {
            // hash algid
            mdName = AlgorithmId.parse
                (d.data.getDerValue()).getName();
        } else if (d.isContextSpecific((byte) 0x01)) {
            // mgf algid
            AlgorithmId val = AlgorithmId.parse(d.data.getDerValue());
            if (!val.getOID().equals(AlgorithmId.mgf1_oid)) {
                throw new IOException("Only MGF1 mgf is supported");
            }
            AlgorithmId params = AlgorithmId.parse(
                new DerValue(val.getEncodedParams()));
            String mgfDigestName = params.getName();
            switch (mgfDigestName) {
            case "SHA-1":
                mgfSpec = MGF1ParameterSpec.SHA1;
                break;
            case "SHA-224":
                mgfSpec = MGF1ParameterSpec.SHA224;
                break;
            case "SHA-256":
                mgfSpec = MGF1ParameterSpec.SHA256;
                break;
            case "SHA-384":
                mgfSpec = MGF1ParameterSpec.SHA384;
                break;
            case "SHA-512":
                mgfSpec = MGF1ParameterSpec.SHA512;
                break;
            case "SHA-512/224":
                mgfSpec = MGF1ParameterSpec.SHA512_224;
                break;
            case "SHA-512/256":
                mgfSpec = MGF1ParameterSpec.SHA512_256;
                break;
            default:
                throw new IOException
                    ("Unrecognized message digest algorithm " +
                    mgfDigestName);
            }
        } else if (d.isContextSpecific((byte) 0x02)) {
            // salt length
            saltLength = d.data.getDerValue().getInteger();
            if (saltLength < 0) {
                throw new IOException("Negative value for saltLength");
            }
        } else if (d.isContextSpecific((byte) 0x03)) {
            // trailer field
            trailerField = d.data.getDerValue().getInteger();
            if (trailerField != 1) {
                throw new IOException("Unsupported trailerField value " +
                trailerField);
            }
        } else {
            throw new IOException("Invalid encoded PSSParameters");
        }
    }

    this.spec = new PSSParameterSpec(mdName, "MGF1", mgfSpec,
            saltLength, trailerField);
}

源代码2 项目： Bytecoder 文件： PSSParameters.java

@Override
protected void engineInit(byte[] encoded) throws IOException {
    // first initialize with the DEFAULT values before
    // retrieving from the encoding bytes
    String mdName = DEFAULT.getDigestAlgorithm();
    MGF1ParameterSpec mgfSpec = (MGF1ParameterSpec) DEFAULT.getMGFParameters();
    int saltLength = DEFAULT.getSaltLength();
    int trailerField = DEFAULT.getTrailerField();

    DerInputStream der = new DerInputStream(encoded);
    DerValue[] datum = der.getSequence(4);

    for (DerValue d : datum) {
        if (d.isContextSpecific((byte) 0x00)) {
            // hash algid
            mdName = AlgorithmId.parse
                (d.data.getDerValue()).getName();
        } else if (d.isContextSpecific((byte) 0x01)) {
            // mgf algid
            AlgorithmId val = AlgorithmId.parse(d.data.getDerValue());
            if (!val.getOID().equals(AlgorithmId.mgf1_oid)) {
                throw new IOException("Only MGF1 mgf is supported");
            }
            AlgorithmId params = AlgorithmId.parse(
                new DerValue(val.getEncodedParams()));
            String mgfDigestName = params.getName();
            switch (mgfDigestName) {
            case "SHA-1":
                mgfSpec = MGF1ParameterSpec.SHA1;
                break;
            case "SHA-224":
                mgfSpec = MGF1ParameterSpec.SHA224;
                break;
            case "SHA-256":
                mgfSpec = MGF1ParameterSpec.SHA256;
                break;
            case "SHA-384":
                mgfSpec = MGF1ParameterSpec.SHA384;
                break;
            case "SHA-512":
                mgfSpec = MGF1ParameterSpec.SHA512;
                break;
            case "SHA-512/224":
                mgfSpec = MGF1ParameterSpec.SHA512_224;
                break;
            case "SHA-512/256":
                mgfSpec = MGF1ParameterSpec.SHA512_256;
                break;
            default:
                throw new IOException
                    ("Unrecognized message digest algorithm " +
                    mgfDigestName);
            }
        } else if (d.isContextSpecific((byte) 0x02)) {
            // salt length
            saltLength = d.data.getDerValue().getInteger();
            if (saltLength < 0) {
                throw new IOException("Negative value for saltLength");
            }
        } else if (d.isContextSpecific((byte) 0x03)) {
            // trailer field
            trailerField = d.data.getDerValue().getInteger();
            if (trailerField != 1) {
                throw new IOException("Unsupported trailerField value " +
                trailerField);
            }
        } else {
            throw new IOException("Invalid encoded PSSParameters");
        }
    }

    this.spec = new PSSParameterSpec(mdName, "MGF1", mgfSpec,
            saltLength, trailerField);
}

源代码3 项目： jdk8u_jdk 文件： PSSParameters.java

@Override
protected void engineInit(byte[] encoded) throws IOException {
    // first initialize with the DEFAULT values before
    // retrieving from the encoding bytes
    String mdName = DEFAULT.getDigestAlgorithm();
    MGF1ParameterSpec mgfSpec = (MGF1ParameterSpec) DEFAULT.getMGFParameters();
    int saltLength = DEFAULT.getSaltLength();
    int trailerField = DEFAULT.getTrailerField();

    DerInputStream der = new DerInputStream(encoded);
    DerValue[] datum = der.getSequence(4);

    for (DerValue d : datum) {
        if (d.isContextSpecific((byte) 0x00)) {
            // hash algid
            mdName = AlgorithmId.parse
                (d.data.getDerValue()).getName();
        } else if (d.isContextSpecific((byte) 0x01)) {
            // mgf algid
            AlgorithmId val = AlgorithmId.parse(d.data.getDerValue());
            if (!val.getOID().equals(AlgorithmId.mgf1_oid)) {
                throw new IOException("Only MGF1 mgf is supported");
            }
            AlgorithmId params = AlgorithmId.parse(
                new DerValue(val.getEncodedParams()));
            String mgfDigestName = params.getName();
            switch (mgfDigestName) {
            case "SHA-1":
                mgfSpec = MGF1ParameterSpec.SHA1;
                break;
            case "SHA-224":
                mgfSpec = MGF1ParameterSpec.SHA224;
                break;
            case "SHA-256":
                mgfSpec = MGF1ParameterSpec.SHA256;
                break;
            case "SHA-384":
                mgfSpec = MGF1ParameterSpec.SHA384;
                break;
            case "SHA-512":
                mgfSpec = MGF1ParameterSpec.SHA512;
                break;
            case "SHA-512/224":
                mgfSpec = MGF1ParameterSpec.SHA512_224;
                break;
            case "SHA-512/256":
                mgfSpec = MGF1ParameterSpec.SHA512_256;
                break;
            default:
                throw new IOException
                    ("Unrecognized message digest algorithm " +
                    mgfDigestName);
            }
        } else if (d.isContextSpecific((byte) 0x02)) {
            // salt length
            saltLength = d.data.getDerValue().getInteger();
            if (saltLength < 0) {
                throw new IOException("Negative value for saltLength");
            }
        } else if (d.isContextSpecific((byte) 0x03)) {
            // trailer field
            trailerField = d.data.getDerValue().getInteger();
            if (trailerField != 1) {
                throw new IOException("Unsupported trailerField value " +
                trailerField);
            }
        } else {
            throw new IOException("Invalid encoded PSSParameters");
        }
    }

    this.spec = new PSSParameterSpec(mdName, "MGF1", mgfSpec,
            saltLength, trailerField);
}

源代码4 项目： aws-encryption-sdk-java 文件： RsaJceKeyCipher.java

RsaJceKeyCipher(PublicKey wrappingKey, PrivateKey unwrappingKey, String transformation) {
    super(wrappingKey, unwrappingKey);

    final Matcher matcher = SUPPORTED_TRANSFORMATIONS.matcher(transformation);
    if (matcher.matches()) {
        final String hashUnknownCase = matcher.group(1);
        if (hashUnknownCase != null) {
            // OAEP mode a.k.a PKCS #1v2
            final String hash = hashUnknownCase.toUpperCase();
            transformation_ = "RSA/ECB/OAEPPadding";

            final MGF1ParameterSpec mgf1Spec;
            switch (hash) {
                case "SHA-1":
                    mgf1Spec = MGF1ParameterSpec.SHA1;
                    break;
                case "SHA-224":
                    LOGGER.warning(transformation + " is not officially supported by the JceMasterKey");
                    mgf1Spec = MGF1ParameterSpec.SHA224;
                    break;
                case "SHA-256":
                    mgf1Spec = MGF1ParameterSpec.SHA256;
                    break;
                case "SHA-384":
                    mgf1Spec = MGF1ParameterSpec.SHA384;
                    break;
                case "SHA-512":
                    mgf1Spec = MGF1ParameterSpec.SHA512;
                    break;
                default:
                    throw new IllegalArgumentException("Unsupported algorithm: " + transformation);
            }
            parameterSpec_ = new OAEPParameterSpec(hash, "MGF1", mgf1Spec, PSource.PSpecified.DEFAULT);
        } else {
            // PKCS #1 v1.x
            transformation_ = transformation;
            parameterSpec_ = null;
        }
    } else {
        LOGGER.warning(transformation + " is not officially supported by the JceMasterKey");
        // Unsupported transformation, just use exactly what we are given
        transformation_ = transformation;
        parameterSpec_ = null;
    }
}

方法所在类

java.security.spec.MGF1ParameterSpec