(C) Export Private Keys from Java KeyStore to JWK Set

Demonstrates how to export the private keys from a Java KeyStore to a JWK Set. Each private key alias is exported to the "kid" parameter.

Note: This example requires Chilkat v9.5.0.66 or greater.

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#include <C_CkJavaKeyStore.h>
#include <C_CkStringBuilder.h>
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    HCkJavaKeyStore jks;
    const char *jksPassword;
    BOOL success;
    HCkStringBuilder sbJwkSet;
    HCkJsonObject json;

    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Note: This example requires Chilkat v9.5.0.66 or greater.

    jks = CkJavaKeyStore_Create();

    jksPassword = "secret";

    // Load the Java keystore from a file.  The JKS file password is used
    // to verify the keyed digest that is found at the very end of the keystore.
    // It verifies that the keystore has not been modified.
    success = CkJavaKeyStore_LoadFile(jks,jksPassword,"qa_data/jks/test_secret.jks");
    if (success != TRUE) {
        printf("%s\n",CkJavaKeyStore_lastErrorText(jks));
        CkJavaKeyStore_Dispose(jks);
        return;
    }

    // Export to JWK Set format.
    // (Exports the compact 1-line JSON string to a StringBuilder..)
    sbJwkSet = CkStringBuilder_Create();
    success = CkJavaKeyStore_ToJwkSet(jks,jksPassword,sbJwkSet);
    if (success != TRUE) {
        printf("%s\n",CkJavaKeyStore_lastErrorText(jks));
        CkJavaKeyStore_Dispose(jks);
        CkStringBuilder_Dispose(sbJwkSet);
        return;
    }

    // To get in human-readable format, load into a JSON object and emit non-compact.
    json = CkJsonObject_Create();
    CkJsonObject_LoadSb(json,sbJwkSet);
    CkJsonObject_putEmitCompact(json,FALSE);
    printf("%s\n",CkJsonObject_emit(json));

    // Sample output:

    // { 
    //   "keys": [
    //     { 
    //       "kty": "RSA",
    //       "n": "yADdNtY3GcgAfwUhvf-ETRbcLFUaecY7lR9UWvBPW6zbzgvUwJRIcxadWFmtFXGZKxLXjKUmNjH8bm9d-cv2l1am1_s-FJN05qxGGNYvQ8EE6BFIkbgREMtpJ9F_BRjuurcIiilYGZ7FxMZDWb5Y5PLmW3JWJzUcCBgchMThzn68m0YpJjxqiVO1LLA-zULccjYyYXpSo0VWNxxaedm7DkJujADJ0-fKtX82vtGKnj8-zvF72CZf_DMhIirIK4Ryzz23-LbNY0b0BS_IQxybZxWpiI8hptciUIaIBIszii-0q3VH5pw0qL8Ec4BiA9pDzThgad3LBdySA-RcPxym6Q",
    //       "e": "AQAB",
    //       "d": "U63o4DSoQSUo7_wZrgDmPcq-u92vghuqei3tgU7iJR0hqgfRL_Hajix8EKcUf9BToW30uWevoSUw1JPL4eOwfIlIrTz1MG6xjoGtol6az-JGR0JT9oPov_obOQmx91QDLiO-cu_xaGbBoB7Dtxyo3MG0F7ayzRyvacOMyxAE2fv24ypb2cYiVNKrsYIGm1QvXvsbkBHW9cCxTSRR3J-jKeYt6X2Lge08z6XpuT7i-a1F_fPKRPWzMwgW1AunHa5GZBAuFZt3_Nv5Gg1RcIOZbax4Xm_7plSFXs76byDFrDQbx9KthTLdGRblRlXMaWmtGBHAmPqcAP45zRCLEO53cQ",
    //       "p": "8uWk3bslzAYbtpxbQumWqIIeMurtH5CEOQv1NzGYLb8q4JRp9mysG1gsJk9_D5-JyqYZd4jkCj9pHgrY5q4J9LmVtJMUsl7m7qp7zqgWK2Q1pOTFH7bwa7omGUqqmSYJdA6rWqq3hiOPOtu5uQgZA0zZCX6o8Y19E55jdI1qM2M",
    //       "q": "0sreI4hZKsC3crSA026bfAWBsqbwBgBr06gOiWl6p4xTRV8dVUtKyMA51_CRSu06oQ4zP6TRGnbPq9CHJIMRN15hX7J5iLJA-ApjgFRItPAvUeEkxha9CfwtCMEqw0Zea1-FH-mLQZ9nJeXyoHnjBpmz_pKE-5HlbJbtKsCCPEM",
    //       "dp": "I2UPZzg0Q8zIEQ4rxk5fo-KCIA1XzHe0rNNvQkG52UC4MM2vuzcOxVVN6a8_5rjqzVry7xZFlLC00qnl_Ydy7_RzOkMMiwmFQVYagHzB7kTGBGdJyltQIYKYtqrIvVRroDvbAHVMFQHthzgpkir56h8yqU2JtNlXVpqIB53r0d0",
    //       "dq": "zGHXMSyrCEEDnjxWDKtaJs5QCyDB6Y_O_NIeBi43tuzgcIrgrirqv-tiKnYe6j9KcY6LMlJkTPyWL0lpP4W107G3SEqMfHYZeGbaQzt1o7qepw1d0pOJh3zzTWG-TMiWFBXxxhdz5pTgNmbW8bI85dFyLIt0VVgI01kjbChsHnE",
    //       "qi": "52wp71nLXtQwu7bH-yYp8No4ru3Vbr6BjzzN7kXTwxLmalzQFRkDUcKzYuOpwgJwCj0REsAnIGXKT4p6PXouzxGFad7dFEINrt3ezXUkN0HVobu0GoOTjlQqJHrkDJM111UVrAgQlr7BVIsx_FbE9hbpGlkeTmim_FCBa12CJhY",
    //       "kid": "test"
    //     },
    //     { 
    //       "kty": "EC",
    //       "crv": "P-256",
    //       "x": "MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4",
    //       "y": "4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM",
    //       "d": "870MB6gfuTJ4HtUnUvYMyJpr5eUZNP4Bk43bVdj3eAE",
    //       "kid": "1"
    //     }
    //   ]
    // }


    CkJavaKeyStore_Dispose(jks);
    CkStringBuilder_Dispose(sbJwkSet);
    CkJsonObject_Dispose(json);

    }