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mkaraoz/ecc-sign.java

Created March 15, 2021 23:04
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ecc-sign.java
/**
* Supported signature algorithms:
* https://developer.android.com/reference/java/security/Signature
*/
public byte[] sign(String message) throws Exception {
KeyPair keyPair = getKeys();
Signature signature = Signature.getInstance("SHA256widthECDSA");
signature.initSign(keyPair.getPrivate());
signature.update(message.getBytes());
byte[] signedData = signature.sign();
Log.d("_MK", Base64.encodeToString(signedData, Base64.DEFAULT));
return signedData;
}
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