WolfSSLEccVerifyCallback

```
public interface WolfSSLEccVerifyCallback
```
wolfSSL ECC Verification Callback Interface. This interface specifies how applicaitons should implement the ECC verification callback class to be used by wolfSSL.
After implementing this interface, it should be passed as a parameter to the WolfSSLContext.setEccVerifyCb() method to be registered with the native wolfSSL library.

Version:

1.0, August 2013

Author:

wolfSSL

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`eccVerifyCallback(WolfSSLSession ssl, java.nio.ByteBuffer sig, long sigSz, java.nio.ByteBuffer hash, long hashSz, java.nio.ByteBuffer keyDer, long keySz, int[] result, java.lang.Object ctx)`	ECC verification callback method.

- Method Detail
  - eccVerifyCallback
```
int eccVerifyCallback(WolfSSLSession ssl,
                      java.nio.ByteBuffer sig,
                      long sigSz,
                      java.nio.ByteBuffer hash,
                      long hashSz,
                      java.nio.ByteBuffer keyDer,
                      long keySz,
                      int[] result,
                      java.lang.Object ctx)
```
    ECC verification callback method. This method acts as ECC verification callback.
    
    Parameters:
    
    ssl - the current SSL session object from which the callback was initiated.
    
    sig - signature to verify
    
    sigSz - length of the signature, sig
    
    hash - input buffer containing the digest of the message
    
    hashSz - length in bytes of the hash, hash
    
    keyDer - the ECC Private key in ASN1 format
    
    keySz - length of the key, keyDer, in bytes
    
    result - output variable where the result of verification should be stored, 1 for success, 0 for failure. Use the first element of the array for storage.
    
    ctx - custom user-registered ECC signing context
    
    Returns:
    
    0 upon success, otherwise a negative value on error.