Examples with Signature java.security.Signature used on opensource projects

Example 86 with Signature

use of java.security.Signature in project spring-boot by spring-projects.

the class TokenValidator method hasValidSignature.

private boolean hasValidSignature(Token token, String key) {
    try {
        PublicKey publicKey = getPublicKey(key);
        Signature signature = Signature.getInstance("SHA256withRSA");
        signature.initVerify(publicKey);
        signature.update(token.getContent());
        return signature.verify(token.getSignature());
    } catch (GeneralSecurityException ex) {
        return false;
    }
}

Example 87 with Signature

use of java.security.Signature in project robovm by robovm.

the class OpenSSLX509Certificate method verifyInternal.

private void verifyInternal(PublicKey key, String sigProvider) throws CertificateException, NoSuchAlgorithmException, InvalidKeyException, NoSuchProviderException, SignatureException {
    String sigAlg = getSigAlgName();
    if (sigAlg == null) {
        sigAlg = getSigAlgOID();
    }
    final Signature sig;
    if (sigProvider == null) {
        sig = Signature.getInstance(sigAlg);
    } else {
        sig = Signature.getInstance(sigAlg, sigProvider);
    }
    sig.initVerify(key);
    sig.update(getTBSCertificate());
    if (!sig.verify(getSignature())) {
        throw new SignatureException("signature did not verify");
    }
}

Example 88 with Signature

use of java.security.Signature in project robovm by robovm.

the class JcaContentVerifierProviderBuilder method createSignatureStream.

private SignatureOutputStream createSignatureStream(AlgorithmIdentifier algorithm, PublicKey publicKey) throws OperatorCreationException {
    try {
        Signature sig = helper.createSignature(algorithm);
        sig.initVerify(publicKey);
        return new SignatureOutputStream(sig);
    } catch (GeneralSecurityException e) {
        throw new OperatorCreationException("exception on setup: " + e, e);
    }
}

Example 89 with Signature

use of java.security.Signature in project robovm by robovm.

the class OperatorHelper method createRawSignature.

public Signature createRawSignature(AlgorithmIdentifier algorithm) {
    Signature sig;
    try {
        String algName = getSignatureName(algorithm);
        algName = "NONE" + algName.substring(algName.indexOf("WITH"));
        sig = helper.createSignature(algName);
        // the AlgorithmIdentifier parameters field MUST contain RSASSA-PSS-params.
        if (algorithm.getAlgorithm().equals(PKCSObjectIdentifiers.id_RSASSA_PSS)) {
            AlgorithmParameters params = helper.createAlgorithmParameters(algName);
            params.init(algorithm.getParameters().toASN1Primitive().getEncoded(), "ASN.1");
            PSSParameterSpec spec = (PSSParameterSpec) params.getParameterSpec(PSSParameterSpec.class);
            sig.setParameter(spec);
        }
    } catch (Exception e) {
        return null;
    }
    return sig;
}

Example 90 with Signature

use of java.security.Signature in project robovm by robovm.

the class SignatureTest method testVerify_SHA1withDSA_Key_Success.

public void testVerify_SHA1withDSA_Key_Success() throws Exception {
    KeyFactory kf = KeyFactory.getInstance("DSA");
    DSAPublicKeySpec pubKeySpec = new DSAPublicKeySpec(DSA_pub, DSA_P, DSA_Q, DSA_G);
    PublicKey pubKey = kf.generatePublic(pubKeySpec);
    Signature sig = Signature.getInstance("SHA1withDSA");
    sig.initVerify(pubKey);
    sig.update(Vector2Data);
    assertTrue("Signature must verify correctly", sig.verify(SHA1withDSA_Vector2Signature));
}