rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package gcm import ( "crypto/internal/fips140" "crypto/internal/fips140/aes" ) // CounterKDF implements a KDF in Counter Mode instantiated with CMAC-AES, // according to NIST SP 800-108 Revision 1 Update 1, Section 4.1. // // It produces a 256-bit output, and accepts a 8-bit Label and a 96-bit Context. // It uses a counter of 16 bits placed before the fixed data. The fixed data is...