Example usage for org.springframework.security.oauth.common.signature RSA_SHA1SignatureMethod sign

Introduction

In this page you can find the example usage for org.springframework.security.oauth.common.signature RSA_SHA1SignatureMethod sign.

Prototype

public String sign(String signatureBaseString) 

Source Link

Document

The Signature Base String is signed using the Consumer’s RSA private key per RFC3447 section 8.2.1, where K is the Consumer’s RSA private key, M the Signature Base String, and S is the result signature octet string: S = RSASSA-PKCS1-V1_5-SIGN (K, M) oauth_signature is set to S, first base64-encoded per RFC2045 section 6.8, then URL-encoded per Parameter Encoding.

Usage

From source file:org.springframework.security.oauth.common.signature.TestRSA_SHA1SignatureMethod.java

/**
 * tests signing and verifying./*from  www. j a v  a2s .c o  m*/
 */
public void testSignAndVerify() throws Exception {
    KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA");
    generator.initialize(1024);
    KeyPair keyPair = generator.generateKeyPair();
    String baseString = "thisismysignaturebasestringthatshouldbemuchlongerthanthisbutitdoesnthavetobeandherearesomestrangecharacters!@#$%^&*)(*";

    byte[] signatureBytes;
    {
        Signature signer = Signature.getInstance("SHA1withRSA");
        signer.initSign(keyPair.getPrivate());
        signer.update(baseString.getBytes("UTF-8"));
        signatureBytes = signer.sign();
    }

    {
        Signature signer = Signature.getInstance("SHA1withRSA");
        signer.initVerify(keyPair.getPublic());
        signer.update(baseString.getBytes("UTF-8"));
        assertTrue(signer.verify(signatureBytes));
    }

    RSA_SHA1SignatureMethod signatureMethod = new RSA_SHA1SignatureMethod(keyPair.getPrivate(),
            keyPair.getPublic());
    String signature = signatureMethod.sign(baseString);
    signatureMethod.verify(baseString, signature);
}

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