media/lib/signer/api/current.txt

// Signature format: 2.0
package com.android.mediadrm.signer {

  public final class MediaDrmSigner {
    method public static com.android.mediadrm.signer.MediaDrmSigner.CertificateRequest getCertificateRequest(android.media.MediaDrm, int, String);
    method public static com.android.mediadrm.signer.MediaDrmSigner.Certificate provideCertificateResponse(android.media.MediaDrm, byte[]) throws android.media.DeniedByServerException;
    method public static byte[] signRSA(android.media.MediaDrm, byte[], String, byte[], byte[]);
    field public static final int CERTIFICATE_TYPE_X509 = 1; // 0x1
  }

  public static final class MediaDrmSigner.Certificate {
    method public byte[] getContent();
    method public byte[] getWrappedPrivateKey();
  }

  public static final class MediaDrmSigner.CertificateRequest {
    method public byte[] getData();
    method public String getDefaultUrl();
  }

}